The document discusses approaches to studying microbiome diversity using phylogeny. It begins by showing the rise in publications on the microbiome over time. It then discusses how phylogeny-driven approaches can be used to study microbiome diversity at various sites in the human body. The approaches involve constructing phylogenetic trees of microbial sequences from samples to determine diversity and relationships between microbes.
Microbiomes in Agriculture, Food, Health and the EnvironmentJonathan Eisen
The document outlines an agenda for a meeting on microbiomes in agriculture, food, health and the environment. The meeting will include four panels discussing the impacts of human and animal microbiomes on food and health, the impacts of microbiomes on plants and agriculture, and the impacts of microbiomes on the environment. It also includes background information on microbiomes and their importance in various contexts.
Jonathan Eisen talk at #UCDavis 10/19/15 on "Microbiomes in Food and Agricult...Jonathan Eisen
Slides for talk on "Microbiomes in Food and Agriculture" by JonathanEisen - note - not all slides were used in talk. These were there to stimulate discussion ...
Ecological Disturbance of the Human Gut MicrobiomeAnne M. Estes
Set of slides discussing the importance of microbes for human health. Made to accompany the hands-on activity "Modeling the Dynamic Digestive System Microbiome" published: http://www.asmscience.org/content/journal/jmbe/10.1128/jmbe.v16i2.908
This document summarizes a lecture given by Dr. Larry Smarr on his research exploring the human microbiome. Some key points:
- Dr. Smarr has been studying the microbial universe inside the human body for 40 years, since microbiology began as a frontier science.
- Advances in DNA sequencing have enabled the sequencing of human and microbial genomes, revolutionizing our understanding of the microbiome.
- The human microbiome is essential to health and disease, with 99% of our genes located in microbes rather than human cells.
- Dr. Smarr's own microbiome was studied before and after colonoscopy and colon surgery, showing dramatic shifts and recovery periods.
- Fecal microbiota trans
These slides explores in general the discovery of the human microbiome, and the important roles they play in our well-being. Humans have evolved to live with microbes, this symbiotic relationship is crucial. Humans are in fact 'supra-organisms' that exhibit both human and microbial traits.
Opening up to Diversity talk by @phylogenomics at #UCDPHSAJonathan Eisen
This document summarizes the key points of an article on the diversity and composition of bacteria in indoor environments. It finds that the bacterial communities found indoors are less diverse than outdoors, and that mechanically ventilated rooms contain less diverse communities than window ventilated rooms. Certain building attributes like ventilation source, airflow rates, humidity and temperature are correlated with the diversity and types of bacteria present. Rooms with lower airflow and humidity have higher abundances of potential human pathogens. The study suggests that building design and operation can manage the indoor microbiome and species that may colonize the human microbiome.
This presentation include microbiome involve in human health and disease. classification and categorization of microbiota is aslo given.Anatomical area in which these microbes present.
Microbiomes in Agriculture, Food, Health and the EnvironmentJonathan Eisen
The document outlines an agenda for a meeting on microbiomes in agriculture, food, health and the environment. The meeting will include four panels discussing the impacts of human and animal microbiomes on food and health, the impacts of microbiomes on plants and agriculture, and the impacts of microbiomes on the environment. It also includes background information on microbiomes and their importance in various contexts.
Jonathan Eisen talk at #UCDavis 10/19/15 on "Microbiomes in Food and Agricult...Jonathan Eisen
Slides for talk on "Microbiomes in Food and Agriculture" by JonathanEisen - note - not all slides were used in talk. These were there to stimulate discussion ...
Ecological Disturbance of the Human Gut MicrobiomeAnne M. Estes
Set of slides discussing the importance of microbes for human health. Made to accompany the hands-on activity "Modeling the Dynamic Digestive System Microbiome" published: http://www.asmscience.org/content/journal/jmbe/10.1128/jmbe.v16i2.908
This document summarizes a lecture given by Dr. Larry Smarr on his research exploring the human microbiome. Some key points:
- Dr. Smarr has been studying the microbial universe inside the human body for 40 years, since microbiology began as a frontier science.
- Advances in DNA sequencing have enabled the sequencing of human and microbial genomes, revolutionizing our understanding of the microbiome.
- The human microbiome is essential to health and disease, with 99% of our genes located in microbes rather than human cells.
- Dr. Smarr's own microbiome was studied before and after colonoscopy and colon surgery, showing dramatic shifts and recovery periods.
- Fecal microbiota trans
These slides explores in general the discovery of the human microbiome, and the important roles they play in our well-being. Humans have evolved to live with microbes, this symbiotic relationship is crucial. Humans are in fact 'supra-organisms' that exhibit both human and microbial traits.
Opening up to Diversity talk by @phylogenomics at #UCDPHSAJonathan Eisen
This document summarizes the key points of an article on the diversity and composition of bacteria in indoor environments. It finds that the bacterial communities found indoors are less diverse than outdoors, and that mechanically ventilated rooms contain less diverse communities than window ventilated rooms. Certain building attributes like ventilation source, airflow rates, humidity and temperature are correlated with the diversity and types of bacteria present. Rooms with lower airflow and humidity have higher abundances of potential human pathogens. The study suggests that building design and operation can manage the indoor microbiome and species that may colonize the human microbiome.
This presentation include microbiome involve in human health and disease. classification and categorization of microbiota is aslo given.Anatomical area in which these microbes present.
Microbes are our Friends.. The effective way of microbes treating our diseases and fighting with the pathogens is very effective. The human microbiome project is a current topic the researchers are focusing now. We think we are humans but the research of Human Microbiome Project states that we are 1% Humans 99% microbes. The highlights of this project is fecal transplantation and effective way of killing pathogens with the positive microbes.
The way we treat our body will treat you back and the antigens which are entered in to our body will greatly fight with microbes to survive and make the human body safe and healthy.
Finally Microbes are us and we are them
The Rise of the Microbiome - talk by Jonathan Eisen for AHCJ15Jonathan Eisen
This document discusses the rise of research on the human microbiome. It provides five reasons for the recent increased interest: 1) increased appreciation of microbial diversity, 2) seeking new areas of research after the human genome was sequenced, 3) advances in DNA sequencing and analysis techniques, 4) understanding the functions of microbes in and on the human body, 5) sequencing costs decreasing drastically. It also outlines some of the major challenges in microbiome research, like complexity from host and environmental factors, and gaining public understanding. Finally, it discusses opportunities in the field, such as improving reference databases, analysis methods, model systems like rice, whole systems approaches, education, citizen science, and more.
The Human Microbiome Project aims to map the microbial makeup of healthy humans through genome sequencing techniques. It was launched in 2008 by the NIH with a budget of $115-150 million over 5 years. The goals are to develop a reference set of microbial genome sequences, explore relationships between microbes and disease, and establish a repository. The study involves selecting subjects, sampling sites like skin and stool, isolating and sequencing microbial DNA, and creating a database of normal human microbiome variation. Potential benefits include medical evaluations, furthering scientific knowledge, and helping relate microbes to conditions like obesity and diabetes. Applications include tracking microbiome evolution over time and identifying factors distinguishing healthy and diseased microbiomes.
VHIR Seminar led by Joel Doré. Research Director. Institut National de la Recherche Agronomique (INRA). Jouy-en-Josas, France.
Abstract: The human intestinal tract harbours a complex microbial ecosystem which plays a key role in nutrition and health. Interactions between food constituents, microbes and the host organism derive from a long co-evolution that resulted in a mutualistic association.
Current investigations into the human faecal metagenome are delivering an extensive gene repertoire representative of functional potentials of the human intestinal microbiota. The most redundant genomic traits of the human intestinal microbiota are identified and thereby its functional balance. These observation point towards the existence of enterotypes, i.e. microbiota sharing specific traits but yet independent of geographic origin, age, sex etc.. It also shows a unique segregation of the human population into individuals with low versus high gene-counts. In the end, it not only gives an unprecedented view of the intestinal microbiota, but it also significantly expands our ability to look for specificities of the microbiota associated with human diseases and to ultimately validate microbial signatures of prognostic and diagnostic value in immune mediated diseases.
Metagenomics of the human intestinal tract was applied to specifically compare obese versus lean individuals as well as to explore the dynamic changes associated with a severe calory-restricted diet. Microbiota structure differs with body-mass index and a limited set of marker species may be used as diagnostic model with a >85% predictive value. Among obese subjects; the overall phenotypic characteristics are worse in individuals with low gene counts microbiota, including a worse evolution of morphometric parameters over a period of 10 years, a low grade inflammatory context also associated with insulin-resistance, and the worst response to dietary constraints in terms of weight loss or improvement of biological and inflammatory characteristics. Low gene count microbiota is also associated with less favourable conditions in inflammatory bowel disease, such as higher relapse rate in ulcerative colitis patients.
Finally, microbiota transplantation has seen a regain of interest with applications expanding from Clostridium difficile infections to immune mediated and metabolic diseases.
The human intestinal microbiota should hence be regarded as a true organ, amenable to rationally designed modulation for human health.
Mapping the Human Gut Microbiome in Health and Disease Using Sequencing, Supe...Larry Smarr
Invited Talk Delivered by Mehrdad Yazdani, Calit2 Ayasdi Sponsored Lunch & Learn American Society of Human Genetics (ASHG) San Diego Convention Center October 19, 2014
The document discusses the normal flora of the human body, including resident and transient flora. It notes that the largest population of normal flora bacteria is found in the colon, with over 400 identified species including Bacteroides fragilis as the most common. The document outlines both beneficial and harmful effects of normal flora, and discusses probiotics which can support normal flora when it is suppressed.
The Human Microbiome in Sports Performance and Healthctorgan
Because our knowledge of the human microbiome is moving so rapidly, we turned our presentation at this conference into a discussion session so experts in the audience could share their professional knowledge and personal experience. By the end of the session, it was clear that we had barely scratched the surface of the importance of our microscopic kin to our health, to sports performance, and to how we need to think about designing research studies. A list of recommended resources is available at: www.caroltorgan.com/microbiome-sports/. We welcome your input!
The document discusses the concept of the human microbiome. It defines the microbiome as the genetic material within a microbiota, or the collection of microorganisms in a specific niche. The human microbiome is dynamic and changes based on factors like development, diet, antibiotics, and disease. The Human Microbiome Project aims to characterize the human microbiome and analyze its roles in health and disease. Recent research has shown links between the gut microbiome and conditions like obesity, autism, diabetes, and responses to cancer immunotherapy treatments.
What do we actually know about the 100 trillion bacteria that live on and inside our bodies? Alexandra Carmichael, formerly of Quantified Self, CureTogether, and 23andMe, gave this talk at SXSW in Austin on March 16th, 2015.
High-Throughput Sequencing of the Human Microbiome, Rob Knight Research Group...Copenhagenomics
The document discusses high-throughput sequencing techniques for analyzing human microbiome samples. It provides examples of studies that used these techniques to analyze microbiome samples from various body sites and populations. These studies characterized differences in microbial communities between body sites, tracked changes over time, identified correlations with disease markers, and compared communities across geographic locations and diets. Advanced analysis tools like QIIME and UniFrac were highlighted for interpreting vast amounts of sequencing data from hundreds of microbiome samples.
Discovering the 100 Trillion Bacteria Living Within Each of UsLarry Smarr
This document provides a summary of a lecture on the human microbiome given by Dr. Larry Smarr. Some key points:
- The human microbiome refers to the trillions of bacteria that live within the human body. Each person contains 100 trillion bacteria, outnumbering human cells.
- Research into the microbiome is a rapidly growing field that provides insights into health and disease. The microbiome plays a role in processes like drug metabolism and immunity.
- The microbiome is established early in life and influenced by factors like birth method and antibiotic use in the first years. This early development can impact future health.
- Microbiome composition and function can change with health status, diet, medications and other
The document discusses factors that influence the development of the infant microbiome and its potential link to obesity risk later in life. It states that the microbiome develops both before and after birth, and is shaped by factors like birth mode, initial feeding method, antibiotic use, and diet. Diet plays the most significant role after infancy, with high fiber diets cultivating more diverse microbiomes. The composition of the infant microbiome may impact obesity risk through the microbiome's role in energy regulation and inflammation. Alterations in the microbiome could increase obesity risk through mechanisms like increased energy harvest from food, raised inflammatory responses, and changes in lipid metabolism.
The document discusses the human microbiome, which is the collection of microbes that live on and inside the human body. It describes some of the microbes commonly found in different areas of the body like the nose, mouth, skin, gut, and urogenital tract. It also discusses how antibiotics and other drugs can disrupt the normal balance of microbes and allow potentially harmful ones to grow. The human microbiome varies between individuals and is an area of ongoing research.
The Gut-Brain Connection: An Inside Look at DepressionAugustin Bralley
The document discusses the gut microbiome and its importance in human health and disease. It notes that the gut contains trillions of bacteria that play a key role in nutrient absorption, immune function, and metabolism. Specific tests are mentioned that can provide insight into the gut microbiome, such as stool analysis, intestinal permeability testing, and organic acid testing in urine. The gut microbiome is suggested to influence conditions like obesity, inflammation, and mental health issues like depression. Maintaining a healthy gut microbiome is presented as important for overall wellness.
1) The study analyzed data from over 1,000 Western adults and found evidence that some taxa in the human gut microbiome exist in alternative stable states, shifting between high and low abundance profiles.
2) Specifically, around 10% of prevalent taxa showed bimodal abundance distributions and reduced stability at intermediate abundances, indicating bi-stability.
3) These bi-stable "tipping elements" can co-occur in different combinations and have been linked to metabolic syndrome and inflammatory bowel disease.
This document summarizes a presentation on the gut microbiota and the impact of probiotics. It discusses the gut as a rich ecosystem containing bacteria, archaea, viruses, and eukaryotes. The presentation notes that the human microbiome contains over 100 times as many genes as the human genome. It also reviews clinical studies that have examined the effects of consuming various probiotic strains on the composition of the gut microbiota in healthy adults and IBS patients. The studies found mostly minor or no changes to the dominant microbiota with probiotic intake. However, some genera were found to be modulated in some individuals. The presentation concludes by discussing the need for more targeted screening of probiotics and understanding what level of microbiota modulation leads
Your body is home to three pounds of germs, a rich microbiome that weighs as much as your brain! Thanks to the recent plummeting cost of gene sequencing, scientists are just now discovering how important these microbes are to health and wellness, with surprising links to conditions ranging from obesity, autism, allergies, depression, and much more. We’ll discuss the latest developments, and show how new, low-cost testing kits can help you learn more about — and reshape — your own unique microbiome.
Hervé Blottiere-El impacto de las ciencias ómicas en la medicina, la nutrició...Fundación Ramón Areces
El 29 de marzo de 2016 celebramos un Simposio Internacional sobre el 'Impacto de las ciencias ómicas en la medicina, nutrición y biotecnología'. Organizado por la Fundación Ramón Areces en colaboración con la Real Academia Nacional de Medicina y BioEuroLatina, abordó cómo un mejor conocimiento del genoma humano está permitiendo notables avances hacia una medicina de precisión.
The document discusses the human microbiome and its role in health and disease. It covers the evolution of the microbiome, factors influencing its composition, and its functions in metabolism, immunity and organ systems. Dysbiosis of the microbiome is linked to various diseases like obesity, cardiovascular disease, liver diseases, cancer and more. Therapeutic manipulation through probiotics, prebiotics, and fecal microbiota transplantation can help restore balance.
Talk for #FOGM15: Challenges and Opportunities in Microbiome Studies and th...Jonathan Eisen
The document discusses the complexity of microbiome studies due to the high diversity of microbes found in and on the human body. It notes that only about 25% of the cells in the human body are human, with the rest being thousands of microbial species. These microbes play essential roles in human health like helping extract nutrients from food and protecting against pathogens. The microbiome is established early in life during birth and through breastfeeding, and continues to be influenced by environmental exposures throughout life.
Microbes are our Friends.. The effective way of microbes treating our diseases and fighting with the pathogens is very effective. The human microbiome project is a current topic the researchers are focusing now. We think we are humans but the research of Human Microbiome Project states that we are 1% Humans 99% microbes. The highlights of this project is fecal transplantation and effective way of killing pathogens with the positive microbes.
The way we treat our body will treat you back and the antigens which are entered in to our body will greatly fight with microbes to survive and make the human body safe and healthy.
Finally Microbes are us and we are them
The Rise of the Microbiome - talk by Jonathan Eisen for AHCJ15Jonathan Eisen
This document discusses the rise of research on the human microbiome. It provides five reasons for the recent increased interest: 1) increased appreciation of microbial diversity, 2) seeking new areas of research after the human genome was sequenced, 3) advances in DNA sequencing and analysis techniques, 4) understanding the functions of microbes in and on the human body, 5) sequencing costs decreasing drastically. It also outlines some of the major challenges in microbiome research, like complexity from host and environmental factors, and gaining public understanding. Finally, it discusses opportunities in the field, such as improving reference databases, analysis methods, model systems like rice, whole systems approaches, education, citizen science, and more.
The Human Microbiome Project aims to map the microbial makeup of healthy humans through genome sequencing techniques. It was launched in 2008 by the NIH with a budget of $115-150 million over 5 years. The goals are to develop a reference set of microbial genome sequences, explore relationships between microbes and disease, and establish a repository. The study involves selecting subjects, sampling sites like skin and stool, isolating and sequencing microbial DNA, and creating a database of normal human microbiome variation. Potential benefits include medical evaluations, furthering scientific knowledge, and helping relate microbes to conditions like obesity and diabetes. Applications include tracking microbiome evolution over time and identifying factors distinguishing healthy and diseased microbiomes.
VHIR Seminar led by Joel Doré. Research Director. Institut National de la Recherche Agronomique (INRA). Jouy-en-Josas, France.
Abstract: The human intestinal tract harbours a complex microbial ecosystem which plays a key role in nutrition and health. Interactions between food constituents, microbes and the host organism derive from a long co-evolution that resulted in a mutualistic association.
Current investigations into the human faecal metagenome are delivering an extensive gene repertoire representative of functional potentials of the human intestinal microbiota. The most redundant genomic traits of the human intestinal microbiota are identified and thereby its functional balance. These observation point towards the existence of enterotypes, i.e. microbiota sharing specific traits but yet independent of geographic origin, age, sex etc.. It also shows a unique segregation of the human population into individuals with low versus high gene-counts. In the end, it not only gives an unprecedented view of the intestinal microbiota, but it also significantly expands our ability to look for specificities of the microbiota associated with human diseases and to ultimately validate microbial signatures of prognostic and diagnostic value in immune mediated diseases.
Metagenomics of the human intestinal tract was applied to specifically compare obese versus lean individuals as well as to explore the dynamic changes associated with a severe calory-restricted diet. Microbiota structure differs with body-mass index and a limited set of marker species may be used as diagnostic model with a >85% predictive value. Among obese subjects; the overall phenotypic characteristics are worse in individuals with low gene counts microbiota, including a worse evolution of morphometric parameters over a period of 10 years, a low grade inflammatory context also associated with insulin-resistance, and the worst response to dietary constraints in terms of weight loss or improvement of biological and inflammatory characteristics. Low gene count microbiota is also associated with less favourable conditions in inflammatory bowel disease, such as higher relapse rate in ulcerative colitis patients.
Finally, microbiota transplantation has seen a regain of interest with applications expanding from Clostridium difficile infections to immune mediated and metabolic diseases.
The human intestinal microbiota should hence be regarded as a true organ, amenable to rationally designed modulation for human health.
Mapping the Human Gut Microbiome in Health and Disease Using Sequencing, Supe...Larry Smarr
Invited Talk Delivered by Mehrdad Yazdani, Calit2 Ayasdi Sponsored Lunch & Learn American Society of Human Genetics (ASHG) San Diego Convention Center October 19, 2014
The document discusses the normal flora of the human body, including resident and transient flora. It notes that the largest population of normal flora bacteria is found in the colon, with over 400 identified species including Bacteroides fragilis as the most common. The document outlines both beneficial and harmful effects of normal flora, and discusses probiotics which can support normal flora when it is suppressed.
The Human Microbiome in Sports Performance and Healthctorgan
Because our knowledge of the human microbiome is moving so rapidly, we turned our presentation at this conference into a discussion session so experts in the audience could share their professional knowledge and personal experience. By the end of the session, it was clear that we had barely scratched the surface of the importance of our microscopic kin to our health, to sports performance, and to how we need to think about designing research studies. A list of recommended resources is available at: www.caroltorgan.com/microbiome-sports/. We welcome your input!
The document discusses the concept of the human microbiome. It defines the microbiome as the genetic material within a microbiota, or the collection of microorganisms in a specific niche. The human microbiome is dynamic and changes based on factors like development, diet, antibiotics, and disease. The Human Microbiome Project aims to characterize the human microbiome and analyze its roles in health and disease. Recent research has shown links between the gut microbiome and conditions like obesity, autism, diabetes, and responses to cancer immunotherapy treatments.
What do we actually know about the 100 trillion bacteria that live on and inside our bodies? Alexandra Carmichael, formerly of Quantified Self, CureTogether, and 23andMe, gave this talk at SXSW in Austin on March 16th, 2015.
High-Throughput Sequencing of the Human Microbiome, Rob Knight Research Group...Copenhagenomics
The document discusses high-throughput sequencing techniques for analyzing human microbiome samples. It provides examples of studies that used these techniques to analyze microbiome samples from various body sites and populations. These studies characterized differences in microbial communities between body sites, tracked changes over time, identified correlations with disease markers, and compared communities across geographic locations and diets. Advanced analysis tools like QIIME and UniFrac were highlighted for interpreting vast amounts of sequencing data from hundreds of microbiome samples.
Discovering the 100 Trillion Bacteria Living Within Each of UsLarry Smarr
This document provides a summary of a lecture on the human microbiome given by Dr. Larry Smarr. Some key points:
- The human microbiome refers to the trillions of bacteria that live within the human body. Each person contains 100 trillion bacteria, outnumbering human cells.
- Research into the microbiome is a rapidly growing field that provides insights into health and disease. The microbiome plays a role in processes like drug metabolism and immunity.
- The microbiome is established early in life and influenced by factors like birth method and antibiotic use in the first years. This early development can impact future health.
- Microbiome composition and function can change with health status, diet, medications and other
The document discusses factors that influence the development of the infant microbiome and its potential link to obesity risk later in life. It states that the microbiome develops both before and after birth, and is shaped by factors like birth mode, initial feeding method, antibiotic use, and diet. Diet plays the most significant role after infancy, with high fiber diets cultivating more diverse microbiomes. The composition of the infant microbiome may impact obesity risk through the microbiome's role in energy regulation and inflammation. Alterations in the microbiome could increase obesity risk through mechanisms like increased energy harvest from food, raised inflammatory responses, and changes in lipid metabolism.
The document discusses the human microbiome, which is the collection of microbes that live on and inside the human body. It describes some of the microbes commonly found in different areas of the body like the nose, mouth, skin, gut, and urogenital tract. It also discusses how antibiotics and other drugs can disrupt the normal balance of microbes and allow potentially harmful ones to grow. The human microbiome varies between individuals and is an area of ongoing research.
The Gut-Brain Connection: An Inside Look at DepressionAugustin Bralley
The document discusses the gut microbiome and its importance in human health and disease. It notes that the gut contains trillions of bacteria that play a key role in nutrient absorption, immune function, and metabolism. Specific tests are mentioned that can provide insight into the gut microbiome, such as stool analysis, intestinal permeability testing, and organic acid testing in urine. The gut microbiome is suggested to influence conditions like obesity, inflammation, and mental health issues like depression. Maintaining a healthy gut microbiome is presented as important for overall wellness.
1) The study analyzed data from over 1,000 Western adults and found evidence that some taxa in the human gut microbiome exist in alternative stable states, shifting between high and low abundance profiles.
2) Specifically, around 10% of prevalent taxa showed bimodal abundance distributions and reduced stability at intermediate abundances, indicating bi-stability.
3) These bi-stable "tipping elements" can co-occur in different combinations and have been linked to metabolic syndrome and inflammatory bowel disease.
This document summarizes a presentation on the gut microbiota and the impact of probiotics. It discusses the gut as a rich ecosystem containing bacteria, archaea, viruses, and eukaryotes. The presentation notes that the human microbiome contains over 100 times as many genes as the human genome. It also reviews clinical studies that have examined the effects of consuming various probiotic strains on the composition of the gut microbiota in healthy adults and IBS patients. The studies found mostly minor or no changes to the dominant microbiota with probiotic intake. However, some genera were found to be modulated in some individuals. The presentation concludes by discussing the need for more targeted screening of probiotics and understanding what level of microbiota modulation leads
Your body is home to three pounds of germs, a rich microbiome that weighs as much as your brain! Thanks to the recent plummeting cost of gene sequencing, scientists are just now discovering how important these microbes are to health and wellness, with surprising links to conditions ranging from obesity, autism, allergies, depression, and much more. We’ll discuss the latest developments, and show how new, low-cost testing kits can help you learn more about — and reshape — your own unique microbiome.
Hervé Blottiere-El impacto de las ciencias ómicas en la medicina, la nutrició...Fundación Ramón Areces
El 29 de marzo de 2016 celebramos un Simposio Internacional sobre el 'Impacto de las ciencias ómicas en la medicina, nutrición y biotecnología'. Organizado por la Fundación Ramón Areces en colaboración con la Real Academia Nacional de Medicina y BioEuroLatina, abordó cómo un mejor conocimiento del genoma humano está permitiendo notables avances hacia una medicina de precisión.
The document discusses the human microbiome and its role in health and disease. It covers the evolution of the microbiome, factors influencing its composition, and its functions in metabolism, immunity and organ systems. Dysbiosis of the microbiome is linked to various diseases like obesity, cardiovascular disease, liver diseases, cancer and more. Therapeutic manipulation through probiotics, prebiotics, and fecal microbiota transplantation can help restore balance.
Talk for #FOGM15: Challenges and Opportunities in Microbiome Studies and th...Jonathan Eisen
The document discusses the complexity of microbiome studies due to the high diversity of microbes found in and on the human body. It notes that only about 25% of the cells in the human body are human, with the rest being thousands of microbial species. These microbes play essential roles in human health like helping extract nutrients from food and protecting against pathogens. The microbiome is established early in life during birth and through breastfeeding, and continues to be influenced by environmental exposures throughout life.
The document discusses various types of human microbiomes, including the oral microbiome, skin microbiome, respiratory tract microbiome, and gut microbiome. It describes the microorganisms commonly found in each area, such as various bacteria, archaea, fungi, and viruses. It also explains the important roles the microbiomes play in human health, such as aiding digestion, producing vitamins, supporting the immune system, and acting as a first line of defense against pathogens.
The document discusses the human microbiome, which refers to the trillions of microorganisms that inhabit various parts of the human body. It notes that the microbiome contains over 100 trillion bacterial cells and has more genes than the human genome. The largest and most dense microbiome is located in the gut, where microbes help break down nutrients and support human metabolism. While microbiome compositions vary between individuals and change over time, they perform similar important functions for human health.
This document provides an overview of microbiology and microorganisms. It discusses that microbiology is the study of microbes too small to be seen with the naked eye. Microbes play both harmful and beneficial roles in our lives, causing diseases but also enabling important processes like photosynthesis, decomposition, nitrogen fixation, and food production. The document examines how microbes are used in medicine and research, gives examples of human and plant diseases caused by microbes, and explores microbial diversity and symbiotic relationships between microbes and other organisms.
This document discusses microorganisms and provides information about their types and roles. It begins by defining microorganisms as organisms that are mostly microscopic in size and can be seen with a microscope. It then lists the main types of microorganisms as fungi, bacteria, protozoa, algae, and viruses. The document also discusses how some microorganisms like lactobacilli and yeast can be good, protecting the body from diseases, while others like certain bacteria can cause illnesses. It concludes by stating that bacteria can be both good and bad for humans, as some are needed for digestion while others cause pathogenic infections.
Think Science: Microbiome - Dr. Lawrence HobermanNathan Cone
As presented at Texas Public Radio's Think Science live event at the Pearl Studio on May 19, 2017. Dr. Lawrence Hoberman on Leaky Gut and the human microbiome.
The document discusses the human microbiome and its relationship to human health. It defines the microbiome as the collection of microorganisms that live on and inside the human body. The microbiome plays important roles in metabolism, immune function, and protecting against pathogenic bacteria. Imbalances or dysbiosis in the normal microbiota have been linked to various diseases. The human microbiome project aims to better characterize human microbiota and understand its role in health and disease.
"In Gut We Trust" The Microbiome & WellbeingJoeFitAsia
The document discusses the microbiome, which refers to the microorganisms that live in and on the human body. It notes that the microbiome contains trillions of cells and plays an important role in human health and disease. Specifically, it affects body weight, nutrition absorption, and risk of chronic diseases. It also influences conditions like allergies, asthma, and the development of the immune system.
Microbiology is relevant to many areas of life. In agriculture, microorganisms play an important role in soil health and plant growth. They are involved in nutrient transformation and decomposition processes in the soil. In food microbiology, microbes are important for food production through fermentation, but can also contaminate foods and cause disease if proper safety practices are not followed. Pharmaceutical microbiology utilizes microbes to produce antibiotics, vaccines, and other drugs, while ensuring sterility during production. Astrobiology studies microbes in space as potential sources of oxygen, food, and waste processing for long term space missions.
Microbiome in Food Microbiology and its explanationWaqarHasan19
The human microbiome refers to the microorganisms that live on and inside the human body. It includes bacteria, archaea, fungi and viruses. The bacterial population alone is estimated at 75-200 trillion individual organisms. Early discoveries in the 1880s identified bacteria like Escherichia coli and Veillonella parvula as part of the human microbiota. The human microbiome contains around 900-1000 different microbial species that vary between body sites and individuals. Microbes in the gut help break down food and prevent harmful bacteria, while also including some potentially pathogenic species. Conditions like C. difficile infection can result from disruptions to the normal microbiota from antibiotics.
This document provides information about microorganisms. It begins by asking essential questions about harmful and beneficial microorganisms. It then defines microorganisms and provides examples of bacteria, viruses, and fungi. It explains how some microorganisms can be harmful, causing infections or food poisoning, but also describes many beneficial roles, such as in food production, sewage treatment, recycling nutrients, and aiding digestion. It highlights the important role of algae and microorganisms in producing oxygen and as part of the ocean's food chain.
The document discusses microbiology and microorganisms. It defines microbiology as the study of organisms too small to see without magnification, including bacteria, viruses, fungi, protozoa, and helminthes. It notes that bacteria are very tiny, around 1-2 micrometers in size. The document outlines some key figures in the field, including Antonie van Leeuwenhoek who first observed microbes under magnification, and Louis Pasteur who demonstrated germ theory and developed pasteurization. It also discusses how microorganisms are identified, measured, and classified, and notes that while some are pathogens and cause disease, many are beneficial and help with processes like nutrient production and decomposition.
Micro-organisms are tiny living things that can only be seen with a microscope. They include bacteria, viruses, and fungi. Bacteria are single-celled microbes that come in different shapes and sizes, and can cause both disease and cure infections. Viruses are even smaller and rely on host cells to reproduce. Fungi feed on dead and living organic matter and include mushrooms and yeasts. Micro-organisms play important roles like decomposing waste, recycling nutrients, and aiding in food production.
This is the most comprehensive introduction to Probiotics, little creatures that have been called by some experts as "internal doctors". What they do for your health is mind-boggling, no matter if you are aware of their existence or not. But as much as the "good" bacteria immensely help your health there are also "bad" microbes that are very harmful to you.
There is plenty of information about probiotics. From articles to scientific studies. But who wants to spend hours and hours to finally get confused. That's what many people feel after reading all those publications. Not everyone is a microbiologist to understand the terms so that he/she can connect the dots.
Therefore, we felt that there was something missing — a guide that really starts at the beginning to equip people with a healthy balance of basic knowledge and "actionable" strategies that can be implemented right away. The Beginners Guide to Probiotics gives you exactly that.
Microbiology is a branch of science that deals with microbes. The term microbiology derives its name from three Greek words mikros [small] bios [life] and logos [study]. Microbiology focus on the occurrence and distribution of microorganisms in nature, their structure, physiology, reproduction, metabolism and classification.
Microbes - Microorganisms are tiny and invisible to naked eye. They can be seen only by magnifying their image with a microscope. Small subcellular or cellular living beings with milli-micron or micron in size and are not visible to our naked eyes are called micro-organisms. Microorganisms include the cellular organisms like bacteria, fungi, algae and protozoa. Viruses are also included as one of the microorganism but they are acellular.
1) Microorganisms are microscopic organisms that exist as single-celled or colonial organisms and include bacteria, archaea, protists, fungi, and some algae and viruses.
2) They were first observed under microscopes in the 1670s and their role in food spoilage and diseases was established in the 1850s-1880s.
3) Microorganisms are found in almost every habitat on Earth and play important roles in industries like food production and medicine, as well as in ecosystems.
Microorganisms are tiny living things that can only be seen under a powerful microscope. They are found everywhere - in the air, water, soil, food, homes, and even inside our bodies. While some microbes are harmful, most are useful. Microbes have existed on Earth for billions of years and are vital to life as they decompose waste, influence food flavors, and produce over half the oxygen in the atmosphere. The three main types of microbes are bacteria, viruses, and fungi. Bacteria come in different shapes and sizes and can move on their own or join together. Viruses invade host cells to replicate. Fungi include mushrooms, yeasts, and molds. Microbes play many important roles
Similar to Jonathan Eisen Talk for #UCDavis #HostMicrobe on Phylogeny & Microbiomes (20)
Innovations in Sequencing & Bioinformatics
Talk for
Healthy Central Valley Together Research Workshop
Jonathan A. Eisen University of California, Davis
January 31, 2024 linktr.ee/jonathaneisen
Talk by Jonathan Eisen for LAMG2022 meetingJonathan Eisen
The document discusses the history of the Lake Arrowhead Microbial Genomes (LAMG) conference. It reveals that LAMG2020 was cancelled due to a secret plan by organizers who formed an "anti-karyote society" that hates eukaryotes. The meeting was to be renamed the "Big, Large, Enormous" meeting of the Lake Arrowhead Big Large Enormous Anti-Karyote Society. The document also hints that several past LAMG speakers have made cryptic comments indicating involvement in a conspiracy surrounding the conference.
Thoughts on UC Davis' COVID Current ActionsJonathan Eisen
Slides I used for a presentation to Chancellor May's leadership council about the current state of UC Davis' response to COVID and how it could be improved
Phylogenetic and Phylogenomic Approaches to the Study of Microbes and Microbi...Jonathan Eisen
The document discusses Jonathan Eisen's work as a microbiology professor at UC Davis. It provides an overview of his research topics, which include microbial phylogenomics and evolvability, phylogenetic methods and tools, and using phylogenomics to study microbial communities and interactions between microbes and hosts under stress. The document also acknowledges collaborators and funding sources for Eisen's research over the years.
This document summarizes a class on detecting, quantifying, and tracking variations of SARS-CoV-2 RNA from COVID-19 samples. It discusses using quantitative RT-PCR (qRT-PCR) to detect and measure viral RNA levels in samples. Sequencing is used to identify variations in the viral genome over time, and online tools like Nextstrain allow viewing the evolution and global transmission of variants. Genotyping assays are also described that can rapidly screen samples for known single nucleotide variations during PCR.
The document discusses the benefits of exercise for mental health. Regular physical activity can help reduce anxiety and depression and improve mood and cognitive functioning. Exercise causes chemical changes in the brain that may help protect against mental illness and improve symptoms.
EVE198 Winter2020 Class 8 - COVID RNA DetectionJonathan Eisen
This document summarizes a class on SARS-CoV-2 RNA detection, quantification, and variation. It discusses how qRT-PCR is used to detect and quantify the virus by amplifying and detecting viral RNA. It also covers sequencing to identify variants, how variants evolve over time, and genotyping assays that can screen samples for known single nucleotide variations. Nextstrain and other online tools are presented that use sequencing data to analyze viral phylogenies, track variant distributions globally, and visualize genetic variations across the SARS-CoV-2 genome.
The document discusses the benefits of exercise for mental health. Regular physical activity can help reduce anxiety and depression and improve mood and cognitive function. Exercise causes chemical changes in the brain that may help protect against mental illness and improve symptoms for those who already suffer from conditions like depression and anxiety.
The document discusses the benefits of exercise for mental health. Regular physical activity can help reduce anxiety and depression and improve mood and cognitive function. Exercise causes chemical changes in the brain that may help protect against mental illness and improve symptoms.
EVE198 Winter2020 Class 5 - COVID VaccinesJonathan Eisen
The document discusses a class on COVID-19 vaccines. It covers topics like vaccine development, current candidates, delivery challenges, and comparisons between vaccines. Moderna and Pfizer mRNA vaccines are highlighted as being similar but having some differences in mRNA region, nanoparticle structure/synthesis, dosage amount, and storage temperature requirements. Other vaccines discussed include Novavax using spike protein nanoparticles, and AstraZeneca and Johnson & Johnson using DNA for spike protein delivered by a modified virus.
EVE198 Winter2020 Class 9 - COVID TransmissionJonathan Eisen
This document discusses modes of SARS-CoV-2 transmission including droplets, aerosols, and surfaces. It emphasizes that surfaces are not as big a risk as initially thought. It provides guidance on limiting transmission from different modes such as distancing, masks, washing hands, cleaning surfaces, and improving ventilation. The focus in 2021 is on droplets and aerosols rather than surfaces.
EVE198 Fall2020 "Covid Mass Testing" Class 8 VaccinesJonathan Eisen
This document discusses a class on vaccines for COVID-19. It covers topics like vaccine development, current candidate vaccines, challenges with vaccine distribution, and how vaccines are being assessed for safety, effectiveness, costs and production feasibility. Over 100 vaccine candidates are in development using platforms like DNA, RNA, viral vectors and inactivated viruses. Efforts like Operation Warp Speed are coordinating development of nucleic acid, viral vector and protein subunit vaccines. Distribution challenges include vaccine production, storage and logistics, number of doses required, and overcoming vaccine nationalism and hesitancy.
EVE198 Fall2020 "Covid Mass Testing" Class 2: Viruses, COIVD and TestingJonathan Eisen
The document discusses the benefits of exercise for mental health. Regular physical activity can help reduce anxiety and depression and improve mood and cognitive function. Exercise causes chemical changes in the brain that may help protect against mental illness and improve symptoms.
EVE198 Fall2020 "Covid Mass Testing" Class 1 IntroductionJonathan Eisen
The document discusses the benefits of exercise for mental health. Regular physical activity can help reduce anxiety and depression and improve mood and cognitive function. Exercise causes chemical changes in the brain that may help protect against mental illness and improve symptoms.
The technology uses reclaimed CO₂ as the dyeing medium in a closed loop process. When pressurized, CO₂ becomes supercritical (SC-CO₂). In this state CO₂ has a very high solvent power, allowing the dye to dissolve easily.
EWOCS-I: The catalog of X-ray sources in Westerlund 1 from the Extended Weste...Sérgio Sacani
Context. With a mass exceeding several 104 M⊙ and a rich and dense population of massive stars, supermassive young star clusters
represent the most massive star-forming environment that is dominated by the feedback from massive stars and gravitational interactions
among stars.
Aims. In this paper we present the Extended Westerlund 1 and 2 Open Clusters Survey (EWOCS) project, which aims to investigate
the influence of the starburst environment on the formation of stars and planets, and on the evolution of both low and high mass stars.
The primary targets of this project are Westerlund 1 and 2, the closest supermassive star clusters to the Sun.
Methods. The project is based primarily on recent observations conducted with the Chandra and JWST observatories. Specifically,
the Chandra survey of Westerlund 1 consists of 36 new ACIS-I observations, nearly co-pointed, for a total exposure time of 1 Msec.
Additionally, we included 8 archival Chandra/ACIS-S observations. This paper presents the resulting catalog of X-ray sources within
and around Westerlund 1. Sources were detected by combining various existing methods, and photon extraction and source validation
were carried out using the ACIS-Extract software.
Results. The EWOCS X-ray catalog comprises 5963 validated sources out of the 9420 initially provided to ACIS-Extract, reaching a
photon flux threshold of approximately 2 × 10−8 photons cm−2
s
−1
. The X-ray sources exhibit a highly concentrated spatial distribution,
with 1075 sources located within the central 1 arcmin. We have successfully detected X-ray emissions from 126 out of the 166 known
massive stars of the cluster, and we have collected over 71 000 photons from the magnetar CXO J164710.20-455217.
PPT on Direct Seeded Rice presented at the three-day 'Training and Validation Workshop on Modules of Climate Smart Agriculture (CSA) Technologies in South Asia' workshop on April 22, 2024.
The cost of acquiring information by natural selectionCarl Bergstrom
This is a short talk that I gave at the Banff International Research Station workshop on Modeling and Theory in Population Biology. The idea is to try to understand how the burden of natural selection relates to the amount of information that selection puts into the genome.
It's based on the first part of this research paper:
The cost of information acquisition by natural selection
Ryan Seamus McGee, Olivia Kosterlitz, Artem Kaznatcheev, Benjamin Kerr, Carl T. Bergstrom
bioRxiv 2022.07.02.498577; doi: https://doi.org/10.1101/2022.07.02.498577
Phenomics assisted breeding in crop improvementIshaGoswami9
As the population is increasing and will reach about 9 billion upto 2050. Also due to climate change, it is difficult to meet the food requirement of such a large population. Facing the challenges presented by resource shortages, climate
change, and increasing global population, crop yield and quality need to be improved in a sustainable way over the coming decades. Genetic improvement by breeding is the best way to increase crop productivity. With the rapid progression of functional
genomics, an increasing number of crop genomes have been sequenced and dozens of genes influencing key agronomic traits have been identified. However, current genome sequence information has not been adequately exploited for understanding
the complex characteristics of multiple gene, owing to a lack of crop phenotypic data. Efficient, automatic, and accurate technologies and platforms that can capture phenotypic data that can
be linked to genomics information for crop improvement at all growth stages have become as important as genotyping. Thus,
high-throughput phenotyping has become the major bottleneck restricting crop breeding. Plant phenomics has been defined as the high-throughput, accurate acquisition and analysis of multi-dimensional phenotypes
during crop growing stages at the organism level, including the cell, tissue, organ, individual plant, plot, and field levels. With the rapid development of novel sensors, imaging technology,
and analysis methods, numerous infrastructure platforms have been developed for phenotyping.
Remote Sensing and Computational, Evolutionary, Supercomputing, and Intellige...University of Maribor
Slides from talk:
Aleš Zamuda: Remote Sensing and Computational, Evolutionary, Supercomputing, and Intelligent Systems.
11th International Conference on Electrical, Electronics and Computer Engineering (IcETRAN), Niš, 3-6 June 2024
Inter-Society Networking Panel GRSS/MTT-S/CIS Panel Session: Promoting Connection and Cooperation
https://www.etran.rs/2024/en/home-english/
ESR spectroscopy in liquid food and beverages.pptxPRIYANKA PATEL
With increasing population, people need to rely on packaged food stuffs. Packaging of food materials requires the preservation of food. There are various methods for the treatment of food to preserve them and irradiation treatment of food is one of them. It is the most common and the most harmless method for the food preservation as it does not alter the necessary micronutrients of food materials. Although irradiated food doesn’t cause any harm to the human health but still the quality assessment of food is required to provide consumers with necessary information about the food. ESR spectroscopy is the most sophisticated way to investigate the quality of the food and the free radicals induced during the processing of the food. ESR spin trapping technique is useful for the detection of highly unstable radicals in the food. The antioxidant capability of liquid food and beverages in mainly performed by spin trapping technique.
Describing and Interpreting an Immersive Learning Case with the Immersion Cub...Leonel Morgado
Current descriptions of immersive learning cases are often difficult or impossible to compare. This is due to a myriad of different options on what details to include, which aspects are relevant, and on the descriptive approaches employed. Also, these aspects often combine very specific details with more general guidelines or indicate intents and rationales without clarifying their implementation. In this paper we provide a method to describe immersive learning cases that is structured to enable comparisons, yet flexible enough to allow researchers and practitioners to decide which aspects to include. This method leverages a taxonomy that classifies educational aspects at three levels (uses, practices, and strategies) and then utilizes two frameworks, the Immersive Learning Brain and the Immersion Cube, to enable a structured description and interpretation of immersive learning cases. The method is then demonstrated on a published immersive learning case on training for wind turbine maintenance using virtual reality. Applying the method results in a structured artifact, the Immersive Learning Case Sheet, that tags the case with its proximal uses, practices, and strategies, and refines the free text case description to ensure that matching details are included. This contribution is thus a case description method in support of future comparative research of immersive learning cases. We then discuss how the resulting description and interpretation can be leveraged to change immersion learning cases, by enriching them (considering low-effort changes or additions) or innovating (exploring more challenging avenues of transformation). The method holds significant promise to support better-grounded research in immersive learning.
The debris of the ‘last major merger’ is dynamically youngSérgio Sacani
The Milky Way’s (MW) inner stellar halo contains an [Fe/H]-rich component with highly eccentric orbits, often referred to as the
‘last major merger.’ Hypotheses for the origin of this component include Gaia-Sausage/Enceladus (GSE), where the progenitor
collided with the MW proto-disc 8–11 Gyr ago, and the Virgo Radial Merger (VRM), where the progenitor collided with the
MW disc within the last 3 Gyr. These two scenarios make different predictions about observable structure in local phase space,
because the morphology of debris depends on how long it has had to phase mix. The recently identified phase-space folds in Gaia
DR3 have positive caustic velocities, making them fundamentally different than the phase-mixed chevrons found in simulations
at late times. Roughly 20 per cent of the stars in the prograde local stellar halo are associated with the observed caustics. Based
on a simple phase-mixing model, the observed number of caustics are consistent with a merger that occurred 1–2 Gyr ago.
We also compare the observed phase-space distribution to FIRE-2 Latte simulations of GSE-like mergers, using a quantitative
measurement of phase mixing (2D causticality). The observed local phase-space distribution best matches the simulated data
1–2 Gyr after collision, and certainly not later than 3 Gyr. This is further evidence that the progenitor of the ‘last major merger’
did not collide with the MW proto-disc at early times, as is thought for the GSE, but instead collided with the MW disc within
the last few Gyr, consistent with the body of work surrounding the VRM.
ESA/ACT Science Coffee: Diego Blas - Gravitational wave detection with orbita...Advanced-Concepts-Team
Presentation in the Science Coffee of the Advanced Concepts Team of the European Space Agency on the 07.06.2024.
Speaker: Diego Blas (IFAE/ICREA)
Title: Gravitational wave detection with orbital motion of Moon and artificial
Abstract:
In this talk I will describe some recent ideas to find gravitational waves from supermassive black holes or of primordial origin by studying their secular effect on the orbital motion of the Moon or satellites that are laser ranged.
ESA/ACT Science Coffee: Diego Blas - Gravitational wave detection with orbita...
Jonathan Eisen Talk for #UCDavis #HostMicrobe on Phylogeny & Microbiomes
1. Phylogeny driven approaches
to the study of microbiome diversity
November 5, 2015
UC Davis
Host-Microbe Interactions Retreat
Jonathan A. Eisen
@phylogenomics
University of California, Davis
3. HUMAN
MICROBIOME
YOUR BODY: HUMAN AND MICROBES
Learn more about your microbiome
American Academy of Microbiology:
http://bit.ly/HumanMicrobiome
fungal
bacterial
human
WHOʼS THERE?
A human body is actually only
about 25% human cells. The
rest is many thousands of
species of bacteria and other
microbes.
Cells in the
human body:
WHERE ARE THEY? WHAT ARE THEY DOING?
Wherever the human body is exposed to
the outside world, there is a microbial
community.
skinGI tractlungsmouth
Our microbiome helps us extract energy
and nutrients from the food we eat,
and crowds out or inhibits pathogens.
HOW DO WE GET OUR MICROBIOME?
BIRTH:
A newborn gets its
microbes from:
BREAST MILK:
Breast milk has been fine-
tuned over millions of
years to provide:
ENVIRONMENT:
For the rest of the baby’s life, it
will continuously encounter new
microbes from:
soil and water
people, pets, plants
new and diverse
foods
nutrients, vitamins,
and antibodies
diverse microbes to
populate the baby’s
gut
its mother’s birth
canal
skin of its mother
and other care-
givers
WHAT IS THE MICROBIOME? WAIT ... WHATʼS A MICROBE?
The human body is home to
trillions of microbes. The
community of microbes
living in intimate association
with our bodies, and the genes
they contain, make up the
human microbiome.
A microbe is a microscopic organism - this
includes viruses, bacteria, and fungi.
Not all microbes make us sick - the microbes in
and on our bodies play many essential roles.
2.5lb
2.5 LBS = WEIGHT
of the microbiome
3 PINTS = VOLUME
of the microbiome
Viruses outnumber bacteria
by about 5:1.
5 1:99%
Microbes contribute an extra
2,000,000 genes to the 20,000 gene
human genome.
urogenital
tract
HUMAN
MICROBIOME
YOUR BODY: HUMAN AND MICROBES
Learn more about your microbiome
American Academy of Microbiology:
http://bit.ly/HumanMicrobiome
fungal
bacterial
human
WHOʼS THERE?
A human body is actually only
about 25% human cells. The
rest is many thousands of
species of bacteria and other
microbes.
Cells in the
human body:
WHERE ARE THEY? WHAT ARE THEY DOING?
Wherever the human body is exposed to
the outside world, there is a microbial
community.
skinGI tractlungsmouth
Our microbiome helps us extract energy
and nutrients from the food we eat,
and crowds out or inhibits pathogens.
HOW DO WE GET OUR MICROBIOME?
BIRTH:
A newborn gets its
microbes from:
BREAST MILK:
Breast milk has been fine-
tuned over millions of
years to provide:
ENVIRONMENT:
For the rest of the baby’s life, it
will continuously encounter new
microbes from:
soil and water
people, pets, plants
new and diverse
foods
nutrients, vitamins,
and antibodies
diverse microbes to
populate the baby’s
gut
its mother’s birth
canal
skin of its mother
and other care-
givers
WHAT IS THE MICROBIOME? WAIT ... WHATʼS A MICROBE?
The human body is home to
trillions of microbes. The
community of microbes
living in intimate association
with our bodies, and the genes
they contain, make up the
human microbiome.
A microbe is a microscopic organism - this
includes viruses, bacteria, and fungi.
Not all microbes make us sick - the microbes in
and on our bodies play many essential roles.
2.5lb
2.5 LBS = WEIGHT
of the microbiome
3 PINTS = VOLUME
of the microbiome
Viruses outnumber bacteria
by about 5:1.
5 1:99%
Microbes contribute an extra
2,000,000 genes to the 20,000 gene
human genome.
urogenital
tract
HUMAN
MICROBIOME
YOUR BODY: HUMAN AND MICROBES
Learn more about your microbiome
American Academy of Microbiology:
http://bit.ly/HumanMicrobiome
fungal
bacterial
human
WHOʼS THERE?
A human body is actually only
about 25% human cells. The
rest is many thousands of
species of bacteria and other
microbes.
Cells in the
human body:
WHERE ARE THEY? WHAT ARE THEY DOING?
Wherever the human body is exposed to
the outside world, there is a microbial
community.
skinGI tractlungsmouth
Our microbiome helps us extract energy
and nutrients from the food we eat,
and crowds out or inhibits pathogens.
HOW DO WE GET OUR MICROBIOME?
BIRTH:
A newborn gets its
microbes from:
BREAST MILK:
Breast milk has been fine-
tuned over millions of
years to provide:
ENVIRONMENT:
For the rest of the baby’s life, it
will continuously encounter new
microbes from:
soil and water
people, pets, plants
new and diverse
foods
nutrients, vitamins,
and antibodies
diverse microbes to
populate the baby’s
gut
its mother’s birth
canal
skin of its mother
and other care-
givers
WHAT IS THE MICROBIOME? WAIT ... WHATʼS A MICROBE?
The human body is home to
trillions of microbes. The
community of microbes
living in intimate association
with our bodies, and the genes
they contain, make up the
human microbiome.
A microbe is a microscopic organism - this
includes viruses, bacteria, and fungi.
Not all microbes make us sick - the microbes in
and on our bodies play many essential roles.
2.5lb
2.5 LBS = WEIGHT
of the microbiome
3 PINTS = VOLUME
of the microbiome
Viruses outnumber bacteria
by about 5:1.
5 1:99%
Microbes contribute an extra
2,000,000 genes to the 20,000 gene
human genome.
urogenital
tract
HUMAN
MICROBIOME
YOUR BODY: HUMAN AND MICROBES
Learn more about your microbiome
American Academy of Microbiology:
http://bit.ly/HumanMicrobiome
fungal
bacterial
human
WHOʼS THERE?
A human body is actually only
about 25% human cells. The
rest is many thousands of
species of bacteria and other
microbes.
Cells in the
human body:
WHERE ARE THEY? WHAT ARE THEY DOING?
Wherever the human body is exposed to
the outside world, there is a microbial
community.
skinGI tractlungsmouth
Our microbiome helps us extract energy
and nutrients from the food we eat,
and crowds out or inhibits pathogens.
HOW DO WE GET OUR MICROBIOME?
BIRTH:
A newborn gets its
microbes from:
BREAST MILK:
Breast milk has been fine-
tuned over millions of
years to provide:
ENVIRONMENT:
For the rest of the baby’s life, it
will continuously encounter new
microbes from:
soil and water
people, pets, plants
new and diverse
foods
nutrients, vitamins,
and antibodies
diverse microbes to
populate the baby’s
gut
its mother’s birth
canal
skin of its mother
and other care-
givers
WHAT IS THE MICROBIOME? WAIT ... WHATʼS A MICROBE?
The human body is home to
trillions of microbes. The
community of microbes
living in intimate association
with our bodies, and the genes
they contain, make up the
human microbiome.
A microbe is a microscopic organism - this
includes viruses, bacteria, and fungi.
Not all microbes make us sick - the microbes in
and on our bodies play many essential roles.
2.5lb
2.5 LBS = WEIGHT
of the microbiome
3 PINTS = VOLUME
of the microbiome
Viruses outnumber bacteria
by about 5:1.
5 1:99%
Microbes contribute an extra
2,000,000 genes to the 20,000 gene
human genome.
urogenital
tract
HUMAN
MICROBIOME
YOUR BODY: HUMAN AND MICROBES
Learn more about your microbiome
American Academy of Microbiology:
http://bit.ly/HumanMicrobiome
fungal
bacterial
human
WHOʼS THERE?
A human body is actually only
about 25% human cells. The
rest is many thousands of
species of bacteria and other
microbes.
Cells in the
human body:
WHERE ARE THEY? WHAT ARE THEY DOING?
Wherever the human body is exposed to
the outside world, there is a microbial
community.
skinGI tractlungsmouth
Our microbiome helps us extract energy
and nutrients from the food we eat,
and crowds out or inhibits pathogens.
HOW DO WE GET OUR MICROBIOME?
BIRTH:
A newborn gets its
microbes from:
BREAST MILK:
Breast milk has been fine-
tuned over millions of
years to provide:
ENVIRONMENT:
For the rest of the baby’s life, it
will continuously encounter new
microbes from:
soil and water
people, pets, plants
new and diverse
foods
nutrients, vitamins,
and antibodies
diverse microbes to
populate the baby’s
gut
its mother’s birth
canal
skin of its mother
and other care-
givers
WHAT IS THE MICROBIOME? WAIT ... WHATʼS A MICROBE?
The human body is home to
trillions of microbes. The
community of microbes
living in intimate association
with our bodies, and the genes
they contain, make up the
human microbiome.
A microbe is a microscopic organism - this
includes viruses, bacteria, and fungi.
Not all microbes make us sick - the microbes in
and on our bodies play many essential roles.
2.5lb
2.5 LBS = WEIGHT
of the microbiome
3 PINTS = VOLUME
of the microbiome
Viruses outnumber bacteria
by about 5:1.
5 1:99%
Microbes contribute an extra
2,000,000 genes to the 20,000 gene
human genome.
urogenital
tract
HUMAN
MICROBIOME
YOUR BODY: HUMAN AND MICROBES
Learn more about your microbiome
American Academy of Microbiology:
http://bit.ly/HumanMicrobiome
fungal
bacterial
human
WHOʼS THERE?
A human body is actually only
about 25% human cells. The
rest is many thousands of
species of bacteria and other
microbes.
Cells in the
human body:
WHERE ARE THEY? WHAT ARE THEY DOING?
Wherever the human body is exposed to
the outside world, there is a microbial
community.
skinGI tractlungsmouth
Our microbiome helps us extract energy
and nutrients from the food we eat,
and crowds out or inhibits pathogens.
HOW DO WE GET OUR MICROBIOME?
BIRTH:
A newborn gets its
microbes from:
BREAST MILK:
Breast milk has been fine-
tuned over millions of
years to provide:
ENVIRONMENT:
For the rest of the baby’s life, it
will continuously encounter new
microbes from:
soil and water
people, pets, plants
new and diverse
foods
nutrients, vitamins,
and antibodies
diverse microbes to
populate the baby’s
gut
its mother’s birth
canal
skin of its mother
and other care-
givers
WHAT IS THE MICROBIOME? WAIT ... WHATʼS A MICROBE?
The human body is home to
trillions of microbes. The
community of microbes
living in intimate association
with our bodies, and the genes
they contain, make up the
human microbiome.
A microbe is a microscopic organism - this
includes viruses, bacteria, and fungi.
Not all microbes make us sick - the microbes in
and on our bodies play many essential roles.
2.5lb
2.5 LBS = WEIGHT
of the microbiome
3 PINTS = VOLUME
of the microbiome
Viruses outnumber bacteria
by about 5:1.
5 1:99%
Microbes contribute an extra
2,000,000 genes to the 20,000 gene
human genome.
urogenital
tract
HUMAN
MICROBIOME
YOUR BODY: HUMAN AND MICROBES
Learn more about your microbiome
American Academy of Microbiology:
http://bit.ly/HumanMicrobiome
fungal
bacterial
human
WHOʼS THERE?
A human body is actually only
about 25% human cells. The
rest is many thousands of
species of bacteria and other
microbes.
Cells in the
human body:
WHERE ARE THEY? WHAT ARE THEY DOING?
Wherever the human body is exposed to
the outside world, there is a microbial
community.
skinGI tractlungsmouth
Our microbiome helps us extract energy
and nutrients from the food we eat,
and crowds out or inhibits pathogens.
HOW DO WE GET OUR MICROBIOME?
BIRTH:
A newborn gets its
microbes from:
BREAST MILK:
Breast milk has been fine-
tuned over millions of
years to provide:
ENVIRONMENT:
For the rest of the baby’s life, it
will continuously encounter new
microbes from:
soil and water
people, pets, plants
new and diverse
foods
nutrients, vitamins,
and antibodies
diverse microbes to
populate the baby’s
gut
its mother’s birth
canal
skin of its mother
and other care-
givers
WHAT IS THE MICROBIOME? WAIT ... WHATʼS A MICROBE?
The human body is home to
trillions of microbes. The
community of microbes
living in intimate association
with our bodies, and the genes
they contain, make up the
human microbiome.
A microbe is a microscopic organism - this
includes viruses, bacteria, and fungi.
Not all microbes make us sick - the microbes in
and on our bodies play many essential roles.
2.5lb
2.5 LBS = WEIGHT
of the microbiome
3 PINTS = VOLUME
of the microbiome
Viruses outnumber bacteria
by about 5:1.
5 1:99%
Microbes contribute an extra
2,000,000 genes to the 20,000 gene
human genome.
urogenital
tract
HUMAN
MICROBIOME
YOUR BODY: HUMAN AND MICROBES
Learn more about your microbiome
American Academy of Microbiology:
http://bit.ly/HumanMicrobiome
fungal
bacterial
human
WHOʼS THERE?
A human body is actually only
about 25% human cells. The
rest is many thousands of
species of bacteria and other
microbes.
Cells in the
human body:
WHERE ARE THEY? WHAT ARE THEY DOING?
Wherever the human body is exposed to
the outside world, there is a microbial
community.
skinGI tractlungsmouth
Our microbiome helps us extract energy
and nutrients from the food we eat,
and crowds out or inhibits pathogens.
HOW DO WE GET OUR MICROBIOME?
BIRTH:
A newborn gets its
microbes from:
BREAST MILK:
Breast milk has been fine-
tuned over millions of
years to provide:
ENVIRONMENT:
For the rest of the baby’s life, it
will continuously encounter new
microbes from:
soil and water
people, pets, plants
new and diverse
foods
nutrients, vitamins,
and antibodies
diverse microbes to
populate the baby’s
gut
its mother’s birth
canal
skin of its mother
and other care-
givers
WHAT IS THE MICROBIOME? WAIT ... WHATʼS A MICROBE?
The human body is home to
trillions of microbes. The
community of microbes
living in intimate association
with our bodies, and the genes
they contain, make up the
human microbiome.
A microbe is a microscopic organism - this
includes viruses, bacteria, and fungi.
Not all microbes make us sick - the microbes in
and on our bodies play many essential roles.
2.5lb
2.5 LBS = WEIGHT
of the microbiome
3 PINTS = VOLUME
of the microbiome
Viruses outnumber bacteria
by about 5:1.
5 1:99%
Microbes contribute an extra
2,000,000 genes to the 20,000 gene
human genome.
urogenital
tract
HUMAN
MICROBIOME
YOUR BODY: HUMAN AND MICROBES
Learn more about your microbiome
American Academy of Microbiology:
http://bit.ly/HumanMicrobiome
fungal
bacterial
human
WHOʼS THERE?
A human body is actually only
about 25% human cells. The
rest is many thousands of
species of bacteria and other
microbes.
Cells in the
human body:
WHERE ARE THEY? WHAT ARE THEY DOING?
Wherever the human body is exposed to
the outside world, there is a microbial
community.
skinGI tractlungsmouth
Our microbiome helps us extract energy
and nutrients from the food we eat,
and crowds out or inhibits pathogens.
HOW DO WE GET OUR MICROBIOME?
BIRTH:
A newborn gets its
microbes from:
BREAST MILK:
Breast milk has been fine-
tuned over millions of
years to provide:
ENVIRONMENT:
For the rest of the baby’s life, it
will continuously encounter new
microbes from:
soil and water
people, pets, plants
new and diverse
foods
nutrients, vitamins,
and antibodies
diverse microbes to
populate the baby’s
gut
its mother’s birth
canal
skin of its mother
and other care-
givers
WHAT IS THE MICROBIOME? WAIT ... WHATʼS A MICROBE?
The human body is home to
trillions of microbes. The
community of microbes
living in intimate association
with our bodies, and the genes
they contain, make up the
human microbiome.
A microbe is a microscopic organism - this
includes viruses, bacteria, and fungi.
Not all microbes make us sick - the microbes in
and on our bodies play many essential roles.
2.5lb
2.5 LBS = WEIGHT
of the microbiome
3 PINTS = VOLUME
of the microbiome
Viruses outnumber bacteria
by about 5:1.
5 1:99%
Microbes contribute an extra
2,000,000 genes to the 20,000 gene
human genome.
urogenital
tract
HUMAN
MICROBIOME
YOUR BODY: HUMAN AND MICROBES
Learn more about your microbiome
American Academy of Microbiology:
http://bit.ly/HumanMicrobiome
fungal
bacterial
human
WHOʼS THERE?
A human body is actually only
about 25% human cells. The
rest is many thousands of
species of bacteria and other
microbes.
Cells in the
human body:
WHERE ARE THEY? WHAT ARE THEY DOING?
Wherever the human body is exposed to
the outside world, there is a microbial
community.
skinGI tractlungsmouth
Our microbiome helps us extract energy
and nutrients from the food we eat,
and crowds out or inhibits pathogens.
HOW DO WE GET OUR MICROBIOME?
BIRTH:
A newborn gets its
microbes from:
BREAST MILK:
Breast milk has been fine-
tuned over millions of
years to provide:
ENVIRONMENT:
For the rest of the baby’s life, it
will continuously encounter new
microbes from:
soil and water
people, pets, plants
new and diverse
foods
nutrients, vitamins,
and antibodies
diverse microbes to
populate the baby’s
gut
its mother’s birth
canal
skin of its mother
and other care-
givers
WHAT IS THE MICROBIOME? WAIT ... WHATʼS A MICROBE?
The human body is home to
trillions of microbes. The
community of microbes
living in intimate association
with our bodies, and the genes
they contain, make up the
human microbiome.
A microbe is a microscopic organism - this
includes viruses, bacteria, and fungi.
Not all microbes make us sick - the microbes in
and on our bodies play many essential roles.
2.5lb
2.5 LBS = WEIGHT
of the microbiome
3 PINTS = VOLUME
of the microbiome
Viruses outnumber bacteria
by about 5:1.
5 1:99%
Microbes contribute an extra
2,000,000 genes to the 20,000 gene
human genome.
urogenital
tract
HUMAN
MICROBIOME
YOUR BODY: HUMAN AND MICROBES
Learn more about your microbiome
American Academy of Microbiology:
http://bit.ly/HumanMicrobiome
fungal
bacterial
human
WHOʼS THERE?
A human body is actually only
about 25% human cells. The
rest is many thousands of
species of bacteria and other
microbes.
Cells in the
human body:
WHERE ARE THEY? WHAT ARE THEY DOING?
Wherever the human body is exposed to
the outside world, there is a microbial
community.
skinGI tractlungsmouth
Our microbiome helps us extract energy
and nutrients from the food we eat,
and crowds out or inhibits pathogens.
HOW DO WE GET OUR MICROBIOME?
BIRTH:
A newborn gets its
microbes from:
BREAST MILK:
Breast milk has been fine-
tuned over millions of
years to provide:
ENVIRONMENT:
For the rest of the baby’s life, it
will continuously encounter new
microbes from:
soil and water
people, pets, plants
new and diverse
foods
nutrients, vitamins,
and antibodies
diverse microbes to
populate the baby’s
gut
its mother’s birth
canal
skin of its mother
and other care-
givers
WHAT IS THE MICROBIOME? WAIT ... WHATʼS A MICROBE?
The human body is home to
trillions of microbes. The
community of microbes
living in intimate association
with our bodies, and the genes
they contain, make up the
human microbiome.
A microbe is a microscopic organism - this
includes viruses, bacteria, and fungi.
Not all microbes make us sick - the microbes in
and on our bodies play many essential roles.
2.5lb
2.5 LBS = WEIGHT
of the microbiome
3 PINTS = VOLUME
of the microbiome
Viruses outnumber bacteria
by about 5:1.
5 1:99%
Microbes contribute an extra
2,000,000 genes to the 20,000 gene
human genome.
urogenital
tract
HUMAN
MICROBIOME
YOUR BODY: HUMAN AND MICROBES
Learn more about your microbiome
American Academy of Microbiology:
http://bit.ly/HumanMicrobiome
fungal
bacterial
human
WHOʼS THERE?
A human body is actually only
about 25% human cells. The
rest is many thousands of
species of bacteria and other
microbes.
Cells in the
human body:
WHERE ARE THEY? WHAT ARE THEY DOING?
Wherever the human body is exposed to
the outside world, there is a microbial
community.
skinGI tractlungsmouth
Our microbiome helps us extract energy
and nutrients from the food we eat,
and crowds out or inhibits pathogens.
HOW DO WE GET OUR MICROBIOME?
BIRTH:
A newborn gets its
microbes from:
BREAST MILK:
Breast milk has been fine-
tuned over millions of
years to provide:
ENVIRONMENT:
For the rest of the baby’s life, it
will continuously encounter new
microbes from:
soil and water
people, pets, plants
new and diverse
foods
nutrients, vitamins,
and antibodies
diverse microbes to
populate the baby’s
gut
its mother’s birth
canal
skin of its mother
and other care-
givers
WHAT IS THE MICROBIOME? WAIT ... WHATʼS A MICROBE?
The human body is home to
trillions of microbes. The
community of microbes
living in intimate association
with our bodies, and the genes
they contain, make up the
human microbiome.
A microbe is a microscopic organism - this
includes viruses, bacteria, and fungi.
Not all microbes make us sick - the microbes in
and on our bodies play many essential roles.
2.5lb
2.5 LBS = WEIGHT
of the microbiome
3 PINTS = VOLUME
of the microbiome
Viruses outnumber bacteria
by about 5:1.
5 1:99%
Microbes contribute an extra
2,000,000 genes to the 20,000 gene
human genome.
urogenital
tract
HUMAN
MICROBIOME
YOUR BODY: HUMAN AND MICROBES
Learn more about your microbiome
American Academy of Microbiology:
http://bit.ly/HumanMicrobiome
fungal
bacterial
human
WHOʼS THERE?
A human body is actually only
about 25% human cells. The
rest is many thousands of
species of bacteria and other
microbes.
Cells in the
human body:
WHERE ARE THEY? WHAT ARE THEY DOING?
Wherever the human body is exposed to
the outside world, there is a microbial
community.
skinGI tractlungsmouth
Our microbiome helps us extract energy
and nutrients from the food we eat,
and crowds out or inhibits pathogens.
HOW DO WE GET OUR MICROBIOME?
BIRTH:
A newborn gets its
microbes from:
BREAST MILK:
Breast milk has been fine-
tuned over millions of
years to provide:
ENVIRONMENT:
For the rest of the baby’s life, it
will continuously encounter new
microbes from:
soil and water
people, pets, plants
new and diverse
foods
nutrients, vitamins,
and antibodies
diverse microbes to
populate the baby’s
gut
its mother’s birth
canal
skin of its mother
and other care-
givers
WHAT IS THE MICROBIOME? WAIT ... WHATʼS A MICROBE?
The human body is home to
trillions of microbes. The
community of microbes
living in intimate association
with our bodies, and the genes
they contain, make up the
human microbiome.
A microbe is a microscopic organism - this
includes viruses, bacteria, and fungi.
Not all microbes make us sick - the microbes in
and on our bodies play many essential roles.
2.5lb
2.5 LBS = WEIGHT
of the microbiome
3 PINTS = VOLUME
of the microbiome
Viruses outnumber bacteria
by about 5:1.
5 1:99%
Microbes contribute an extra
2,000,000 genes to the 20,000 gene
human genome.
urogenital
tract
HU
MICROBI
YOUR BODY: HUMAN AND M
Learn more about your micro
American Academy of Microbiology:
http://bit.ly/HumanMicrobiome
fungal
bacterial
human
WHOʼS THERE?
A human bod
about 25% h
rest is many t
species of ba
microbes.
Cells in the
human body:
WHERE ARE THEY? WHAT ARE THE
Wherever the human body is exposed to
the outside world, there is a microbial
community.
GI tractlungsmouth
Our microbi
and nu
and crowd
HOW DO WE GET OUR MICROB
BIRTH:
A newborn gets its
microbes from:
BREAST MILK:
Breast milk has been fine-
tuned over millions of
years to provide:
ENV
For t
will c
micro
s
p
n
fo
nutrients, vitamins,
and antibodies
diverse microbes to
populate the baby’s
gut
its mother’s birth
canal
skin of its mother
and other care-
givers
WHAT IS THE MICROBIOME? WAIT ... WH
The human body is home to
trillions of microbes. The
community of microbes
living in intimate association
with our bodies, and the genes
they contain, make up the
human microbiome.
A microbe is a mic
includes viruses, b
Not all microbes m
and on our bodies
2.5lb
2.5 LBS = WEIGHT
of the microbiome
Viru
599%
Microbes contribute an extra
2,000,000 genes to the 20,000 gene
human genome.
HUMAN
MICROBIOME
YOUR BODY: HUMAN AND MICROBES
Learn more about your microbiome
American Academy of Microbiology:
http://bit.ly/HumanMicrobiome
fungal
bacterial
human
WHOʼS THERE?
A human body is actually only
about 25% human cells. The
rest is many thousands of
species of bacteria and other
microbes.
Cells in the
human body:
WHERE ARE THEY? WHAT ARE THEY DOING?
Wherever the human body is exposed to
the outside world, there is a microbial
community.
skinGI tractlungsmouth
Our microbiome helps us extract energy
and nutrients from the food we eat,
and crowds out or inhibits pathogens.
HOW DO WE GET OUR MICROBIOME?
BIRTH:
A newborn gets its
microbes from:
BREAST MILK:
Breast milk has been fine-
tuned over millions of
years to provide:
ENVIRONMENT:
For the rest of the baby’s life, it
will continuously encounter new
microbes from:
soil and water
people, pets, plants
new and diverse
foods
nutrients, vitamins,
and antibodies
diverse microbes to
populate the baby’s
gut
its mother’s birth
canal
skin of its mother
and other care-
givers
WHAT IS THE MICROBIOME? WAIT ... WHATʼS A MICROBE?
The human body is home to
trillions of microbes. The
community of microbes
living in intimate association
with our bodies, and the genes
they contain, make up the
human microbiome.
A microbe is a microscopic organism - this
includes viruses, bacteria, and fungi.
Not all microbes make us sick - the microbes in
and on our bodies play many essential roles.
2.5lb
2.5 LBS = WEIGHT
of the microbiome
3 PINTS = VOLUME
of the microbiome
Viruses outnumber bacteria
by about 5:1.
5 1:99%
Microbes contribute an extra
2,000,000 genes to the 20,000 gene
human genome.
urogenital
tract
HU
MICROBI
YOUR BODY: HUMAN AND M
Learn more about your micro
American Academy of Microbiology:
http://bit.ly/HumanMicrobiome
fungal
bacterial
human
WHOʼS THERE?
A human bod
about 25% h
rest is many t
species of ba
microbes.
Cells in the
human body:
WHERE ARE THEY? WHAT ARE THE
Wherever the human body is exposed to
the outside world, there is a microbial
community.
GI tractlungsmouth
Our microbi
and nu
and crowd
HOW DO WE GET OUR MICROB
BIRTH:
A newborn gets its
microbes from:
BREAST MILK:
Breast milk has been fine-
tuned over millions of
years to provide:
ENV
For t
will c
micro
s
p
n
fo
nutrients, vitamins,
and antibodies
diverse microbes to
populate the baby’s
gut
its mother’s birth
canal
skin of its mother
and other care-
givers
WHAT IS THE MICROBIOME? WAIT ... WH
The human body is home to
trillions of microbes. The
community of microbes
living in intimate association
with our bodies, and the genes
they contain, make up the
human microbiome.
A microbe is a mic
includes viruses, b
Not all microbes m
and on our bodies
2.5lb
2.5 LBS = WEIGHT
of the microbiome
Viru
599%
Microbes contribute an extra
2,000,000 genes to the 20,000 gene
human genome.
HUMAN
MICROBIOME
YOUR BODY: HUMAN AND MICROBES
Learn more about your microbiome
American Academy of Microbiology:
http://bit.ly/HumanMicrobiome
fungal
bacterial
human
WHOʼS THERE?
A human body is actually only
about 25% human cells. The
rest is many thousands of
species of bacteria and other
microbes.
Cells in the
human body:
WHERE ARE THEY? WHAT ARE THEY DOING?
Wherever the human body is exposed to
the outside world, there is a microbial
community.
skinGI tractlungsmouth
Our microbiome helps us extract energy
and nutrients from the food we eat,
and crowds out or inhibits pathogens.
HOW DO WE GET OUR MICROBIOME?
BIRTH:
A newborn gets its
microbes from:
BREAST MILK:
Breast milk has been fine-
tuned over millions of
years to provide:
ENVIRONMENT:
For the rest of the baby’s life, it
will continuously encounter new
microbes from:
soil and water
people, pets, plants
new and diverse
foods
nutrients, vitamins,
and antibodies
diverse microbes to
populate the baby’s
gut
its mother’s birth
canal
skin of its mother
and other care-
givers
WHAT IS THE MICROBIOME? WAIT ... WHATʼS A MICROBE?
The human body is home to
trillions of microbes. The
community of microbes
living in intimate association
with our bodies, and the genes
they contain, make up the
human microbiome.
A microbe is a microscopic organism - this
includes viruses, bacteria, and fungi.
Not all microbes make us sick - the microbes in
and on our bodies play many essential roles.
2.5lb
2.5 LBS = WEIGHT
of the microbiome
3 PINTS = VOLUME
of the microbiome
Viruses outnumber bacteria
by about 5:1.
5 1:99%
Microbes contribute an extra
2,000,000 genes to the 20,000 gene
human genome.
urogenital
tract
HUM
MICROBI
YOUR BODY: HUMAN AND M
Learn more about your micro
American Academy of Microbiology:
http://bit.ly/HumanMicrobiome
fungal
bacterial
human
WHOʼS THERE?
A human bod
about 25% hu
rest is many t
species of bac
microbes.
Cells in the
human body:
WHERE ARE THEY? WHAT ARE THE
Wherever the human body is exposed to
the outside world, there is a microbial
community.
GI tractlungsmouth
Our microbio
and nut
and crowd
HOW DO WE GET OUR MICROB
BIRTH:
A newborn gets its
microbes from:
BREAST MILK:
Breast milk has been fine-
tuned over millions of
years to provide:
ENV
For th
will c
micro
so
pe
ne
fo
nutrients, vitamins,
and antibodies
diverse microbes to
populate the baby’s
gut
its mother’s birth
canal
skin of its mother
and other care-
givers
WHAT IS THE MICROBIOME? WAIT ... WH
The human body is home to
trillions of microbes. The
community of microbes
living in intimate association
with our bodies, and the genes
they contain, make up the
human microbiome.
A microbe is a mic
includes viruses, ba
Not all microbes m
and on our bodies
2.5lb
2.5 LBS = WEIGHT
of the microbiome
Viru
599%
Microbes contribute an extra
2,000,000 genes to the 20,000 gene
human genome.
HUMAN
MICROBIOME
YOUR BODY: HUMAN AND MICROBES
Learn more about your microbiome
American Academy of Microbiology:
http://bit.ly/HumanMicrobiome
fungal
bacterial
human
WHOʼS THERE?
A human body is actually only
about 25% human cells. The
rest is many thousands of
species of bacteria and other
microbes.
Cells in the
human body:
WHERE ARE THEY? WHAT ARE THEY DOING?
Wherever the human body is exposed to
the outside world, there is a microbial
community.
skinGI tractlungsmouth
Our microbiome helps us extract energy
and nutrients from the food we eat,
and crowds out or inhibits pathogens.
HOW DO WE GET OUR MICROBIOME?
BIRTH:
A newborn gets its
microbes from:
BREAST MILK:
Breast milk has been fine-
tuned over millions of
years to provide:
ENVIRONMENT:
For the rest of the baby’s life, it
will continuously encounter new
microbes from:
soil and water
people, pets, plants
new and diverse
foods
nutrients, vitamins,
and antibodies
diverse microbes to
populate the baby’s
gut
its mother’s birth
canal
skin of its mother
and other care-
givers
WHAT IS THE MICROBIOME? WAIT ... WHATʼS A MICROBE?
The human body is home to
trillions of microbes. The
community of microbes
living in intimate association
with our bodies, and the genes
they contain, make up the
human microbiome.
A microbe is a microscopic organism - this
includes viruses, bacteria, and fungi.
Not all microbes make us sick - the microbes in
and on our bodies play many essential roles.
2.5lb
2.5 LBS = WEIGHT
of the microbiome
3 PINTS = VOLUME
of the microbiome
Viruses outnumber bacteria
by about 5:1.
5 1:99%
Microbes contribute an extra
2,000,000 genes to the 20,000 gene
human genome.
urogenital
tract
HUMAN
MICROBIOME
YOUR BODY: HUMAN AND MICROBES
Learn more about your microbiome
American Academy of Microbiology:
http://bit.ly/HumanMicrobiome
fungal
bacterial
human
WHOʼS THERE?
A human body is actually only
about 25% human cells. The
rest is many thousands of
species of bacteria and other
microbes.
Cells in the
human body:
WHERE ARE THEY? WHAT ARE THEY DOING?
Wherever the human body is exposed to
the outside world, there is a microbial
community.
skinGI tractlungsmouth
Our microbiome helps us extract energy
and nutrients from the food we eat,
and crowds out or inhibits pathogens.
HOW DO WE GET OUR MICROBIOME?
BIRTH:
A newborn gets its
microbes from:
BREAST MILK:
Breast milk has been fine-
tuned over millions of
years to provide:
ENVIRONMENT:
For the rest of the baby’s life, it
will continuously encounter new
microbes from:
soil and water
people, pets, plants
new and diverse
foods
nutrients, vitamins,
and antibodies
diverse microbes to
populate the baby’s
gut
its mother’s birth
canal
skin of its mother
and other care-
givers
WHAT IS THE MICROBIOME? WAIT ... WHATʼS A MICROBE?
The human body is home to
trillions of microbes. The
community of microbes
living in intimate association
with our bodies, and the genes
they contain, make up the
human microbiome.
A microbe is a microscopic organism - this
includes viruses, bacteria, and fungi.
Not all microbes make us sick - the microbes in
and on our bodies play many essential roles.
2.5lb
2.5 LBS = WEIGHT
of the microbiome
3 PINTS = VOLUME
of the microbiome
Viruses outnumber bacteria
by about 5:1.
5 1:99%
Microbes contribute an extra
2,000,000 genes to the 20,000 gene
human genome.
urogenital
tract
HUMAN
MICROBIOME
YOUR BODY: HUMAN AND MICROBES
Learn more about your microbiome
American Academy of Microbiology:
http://bit.ly/HumanMicrobiome
fungal
bacterial
human
WHOʼS THERE?
A human body is actually only
about 25% human cells. The
rest is many thousands of
species of bacteria and other
microbes.
Cells in the
human body:
WHERE ARE THEY? WHAT ARE THEY DOING?
Wherever the human body is exposed to
the outside world, there is a microbial
community.
skinGI tractlungsmouth
Our microbiome helps us extract energy
and nutrients from the food we eat,
and crowds out or inhibits pathogens.
HOW DO WE GET OUR MICROBIOME?
BIRTH:
A newborn gets its
microbes from:
BREAST MILK:
Breast milk has been fine-
tuned over millions of
years to provide:
ENVIRONMENT:
For the rest of the baby’s life, it
will continuously encounter new
microbes from:
soil and water
people, pets, plants
new and diverse
foods
nutrients, vitamins,
and antibodies
diverse microbes to
populate the baby’s
gut
its mother’s birth
canal
skin of its mother
and other care-
givers
WHAT IS THE MICROBIOME? WAIT ... WHATʼS A MICROBE?
The human body is home to
trillions of microbes. The
community of microbes
living in intimate association
with our bodies, and the genes
they contain, make up the
human microbiome.
A microbe is a microscopic organism - this
includes viruses, bacteria, and fungi.
Not all microbes make us sick - the microbes in
and on our bodies play many essential roles.
2.5lb
2.5 LBS = WEIGHT
of the microbiome
3 PINTS = VOLUME
of the microbiome
Viruses outnumber bacteria
by about 5:1.
5 1:99%
Microbes contribute an extra
2,000,000 genes to the 20,000 gene
human genome.
urogenital
tract
HUMAN
MICROBIOME
YOUR BODY: HUMAN AND MICROBES
Learn more about your microbiome
American Academy of Microbiology:
http://bit.ly/HumanMicrobiome
fungal
bacterial
human
WHOʼS THERE?
A human body is actually only
about 25% human cells. The
rest is many thousands of
species of bacteria and other
microbes.
Cells in the
human body:
WHERE ARE THEY? WHAT ARE THEY DOING?
Wherever the human body is exposed to
the outside world, there is a microbial
community.
skinGI tractlungsmouth
Our microbiome helps us extract energy
and nutrients from the food we eat,
and crowds out or inhibits pathogens.
HOW DO WE GET OUR MICROBIOME?
BIRTH:
A newborn gets its
microbes from:
BREAST MILK:
Breast milk has been fine-
tuned over millions of
years to provide:
ENVIRONMENT:
For the rest of the baby’s life, it
will continuously encounter new
microbes from:
soil and water
people, pets, plants
new and diverse
foods
nutrients, vitamins,
and antibodies
diverse microbes to
populate the baby’s
gut
its mother’s birth
canal
skin of its mother
and other care-
givers
WHAT IS THE MICROBIOME? WAIT ... WHATʼS A MICROBE?
The human body is home to
trillions of microbes. The
community of microbes
living in intimate association
with our bodies, and the genes
they contain, make up the
human microbiome.
A microbe is a microscopic organism - this
includes viruses, bacteria, and fungi.
Not all microbes make us sick - the microbes in
and on our bodies play many essential roles.
2.5lb
2.5 LBS = WEIGHT
of the microbiome
3 PINTS = VOLUME
of the microbiome
Viruses outnumber bacteria
by about 5:1.
5 1:99%
Microbes contribute an extra
2,000,000 genes to the 20,000 gene
human genome.
urogenital
tract
HUMAN
MICROBIOME
YOUR BODY: HUMAN AND MICROBES
Learn more about your microbiome
American Academy of Microbiology:
http://bit.ly/HumanMicrobiome
fungal
bacterial
human
WHOʼS THERE?
A human body is actually only
about 25% human cells. The
rest is many thousands of
species of bacteria and other
microbes.
Cells in the
human body:
WHERE ARE THEY? WHAT ARE THEY DOING?
Wherever the human body is exposed to
the outside world, there is a microbial
community.
skinGI tractlungsmouth
Our microbiome helps us extract energy
and nutrients from the food we eat,
and crowds out or inhibits pathogens.
HOW DO WE GET OUR MICROBIOME?
BIRTH:
A newborn gets its
microbes from:
BREAST MILK:
Breast milk has been fine-
tuned over millions of
years to provide:
ENVIRONMENT:
For the rest of the baby’s life, it
will continuously encounter new
microbes from:
soil and water
people, pets, plants
new and diverse
foods
nutrients, vitamins,
and antibodies
diverse microbes to
populate the baby’s
gut
its mother’s birth
canal
skin of its mother
and other care-
givers
WHAT IS THE MICROBIOME? WAIT ... WHATʼS A MICROBE?
The human body is home to
trillions of microbes. The
community of microbes
living in intimate association
with our bodies, and the genes
they contain, make up the
human microbiome.
A microbe is a microscopic organism - this
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5. Woese: Classification of Cultured Taxa by rRNA PCR
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8. STAP (for rRNA)
An Automated Phylogenetic Tree-Based Small Subunit
rRNA Taxonomy and Alignment Pipeline (STAP)
Dongying Wu1
*, Amber Hartman1,6
, Naomi Ward4,5
, Jonathan A. Eisen1,2,3
1 UC Davis Genome Center, University of California Davis, Davis, California, United States of America, 2 Section of Evolution and Ecology, College of Biological Sciences,
University of California Davis, Davis, California, United States of America, 3 Department of Medical Microbiology and Immunology, School of Medicine, University of
California Davis, Davis, California, United States of America, 4 Department of Molecular Biology, University of Wyoming, Laramie, Wyoming, United States of America,
5 Center of Marine Biotechnology, Baltimore, Maryland, United States of America, 6 The Johns Hopkins University, Department of Biology, Baltimore, Maryland, United
States of America
Abstract
Comparative analysis of small-subunit ribosomal RNA (ss-rRNA) gene sequences forms the basis for much of what we know
about the phylogenetic diversity of both cultured and uncultured microorganisms. As sequencing costs continue to decline
and throughput increases, sequences of ss-rRNA genes are being obtained at an ever-increasing rate. This increasing flow of
data has opened many new windows into microbial diversity and evolution, and at the same time has created significant
methodological challenges. Those processes which commonly require time-consuming human intervention, such as the
preparation of multiple sequence alignments, simply cannot keep up with the flood of incoming data. Fully automated
methods of analysis are needed. Notably, existing automated methods avoid one or more steps that, though
computationally costly or difficult, we consider to be important. In particular, we regard both the building of multiple
sequence alignments and the performance of high quality phylogenetic analysis to be necessary. We describe here our fully-
automated ss-rRNA taxonomy and alignment pipeline (STAP). It generates both high-quality multiple sequence alignments
and phylogenetic trees, and thus can be used for multiple purposes including phylogenetically-based taxonomic
assignments and analysis of species diversity in environmental samples. The pipeline combines publicly-available packages
(PHYML, BLASTN and CLUSTALW) with our automatic alignment, masking, and tree-parsing programs. Most importantly,
this automated process yields results comparable to those achievable by manual analysis, yet offers speed and capacity that
are unattainable by manual efforts.
Citation: Wu D, Hartman A, Ward N, Eisen JA (2008) An Automated Phylogenetic Tree-Based Small Subunit rRNA Taxonomy and Alignment Pipeline (STAP). PLoS
ONE 3(7): e2566. doi:10.1371/journal.pone.0002566
multiple alignment and phylogeny was deemed unfeasible.
However, this we believe can compromise the value of the results.
For example, the delineation of OTUs has also been automated
via tools that do not make use of alignments or phylogenetic trees
(e.g., Greengenes). This is usually done by carrying out pairwise
comparisons of sequences and then clustering of sequences that
have better than some cutoff threshold of similarity with each
other). This approach can be powerful (and reasonably efficient)
but it too has limitations. In particular, since multiple sequence
alignments are not used, one cannot carry out standard
phylogenetic analyses. In addition, without multiple sequence
alignments one might end up comparing and contrasting different
regions of a sequence depending on what it is paired with.
The limitations of avoiding multiple sequence alignments and
phylogenetic analysis are readily apparent in tools to classify
sequences. For example, the Ribosomal Database Project’s
Classifier program [29] focuses on composition characteristics of
each sequence (e.g., oligonucleotide frequency) and assigns
taxonomy based upon clustering genes by their composition.
Though this is fast and completely automatable, it can be misled in
cases where distantly related sequences have converged on similar
composition, something known to be a major problem in ss-rRNA
sequences [30]. Other taxonomy assignment systems focus
primarily on the similarity of sequences. The simplest of these is
classification tools it does have some limitations. For example,
the generation of new alignments for each sequence is both
computational costly, and does not take advantage of available
curated alignments that make use of ss-RNA secondary structure
to guide the primary sequence alignment. Perhaps most
importantly however is that the tool is not fully automated. In
addition, it does not generate multiple sequence alignments for all
sequences in a dataset which would be necessary for doing many
analyses.
Automated methods for analyzing rRNA sequences are also
available at the web sites for multiple rRNA centric databases,
such as Greengenes and the Ribosomal Database Project (RDPII).
Though these and other web sites offer diverse powerful tools, they
do have some limitations. For example, not all provide multiple
sequence alignments as output and few use phylogenetic
approaches for taxonomy assignments or other analyses. More
importantly, all provide only web-based interfaces and their
integrated software, (e.g., alignment and taxonomy assignment),
cannot be locally installed by the user. Therefore, the user cannot
take advantage of the speed and computing power of parallel
processing such as is available on linux clusters, or locally alter and
potentially tailor these programs to their individual computing
needs (Table 1).
Given the limited automated tools that are available for
Table 1. Comparison of STAP’s computational abilities relative to existing commonly-used ss-RNA analysis tools.
STAP ARB Greengenes RDP
Installed where? Locally Locally Web only Web only
User interface Command line GUI Web portal Web portal
Parallel processing YES NO NO NO
Manual curation for taxonomy assignment NO YES NO NO
Manual curation for alignment NO YES NO* NO
Open source YES** NO NO NO
Processing speed Fast Slow Medium Medium
It is important to note, that STAP is the only software that runs on the command line and can take advantage of parallel processing on linux clusters and, further, is
more amenable to downstream code manipulation.
*
Note: Greengenes alignment output is compatible with upload into ARB and downstream manual alignment.
**
The STAP program itself is open source, the programs it depends on are freely available but not open source.
doi:10.1371/journal.pone.0002566.t001
ss-rRNA Taxonomy Pipeline
STAP database, and the query sequence is aligned to them using
the CLUSTALW profile alignment algorithm [40] as described
above for domain assignment. By adapting the profile alignment
algorithm, th
while gaps ar
sequence ac
Figure 1. A flow chart of the STAP pipeline.
doi:10.1371/journal.pone.0002566.g001
STAP database, and the query sequence is aligned to them using
the CLUSTALW profile alignment algorithm [40] as described
above for domain assignment. By adapting the profile alignment
algorithm, the alignments from the STAP database remain intact,
while gaps are inserted and nucleotides are trimmed for the query
sequence according to the profile defined by the previous
alignments from the databases. Thus the accuracy and quality of
the alignment generated at this step depends heavily on the quality
of the Bacterial/Archaeal ss-rRNA alignments from the
Greengenes project or the Eukaryotic ss-rRNA alignments from
the RDPII project.
Phylogenetic analysis using multiple sequence alignments rests on
the assumption that the residues (nucleotides or amino acids) at the
same position in every sequence in the alignment are homologous.
Thus, columns in the alignment for which ‘‘positional homology’’
cannot be robustly determined must be excluded from subsequent
analyses. This process of evaluating homology and eliminating
questionable columns, known as masking, typically requires time-
consuming, skillful, human intervention. We designed an automat-
ed masking method for ss-rRNA alignments, thus eliminating this
bottleneck in high-throughput processing.
First, an alignment score is calculated for each aligned column
by a method similar to that used in the CLUSTALX package [42].
Specifically, an R-dimensional sequence space representing all the
possible nucleotide character states is defined. Then for each
aligned column, the nucleotide populating that column in each of
the aligned sequences is assigned a score in each of the R
dimensions (Sr) according to the IUB matrix [42]. The consensus
‘‘nucleotide’’ for each column (X) also has R dimensions, with the
Figure 2. Domain assignment. In Step 1, STAP assigns a domain to
each query sequence based on its position in a maximum likelihood
tree of representative ss-rRNA sequences. Because the tree illustrated
here is not rooted, domain assignment would not be accurate and
Figure 1. A flow chart of the STAP pipeline.
doi:10.1371/journal.pone.0002566.g001
ss-rRNA Taxonomy Pipeline
Dongying
Wu
Amber
Hartman
Naomi Ward
9. Hartman et al. BMC Bioinformatics 2010, 11:317
http://www.biomedcentral.com/1471-2105/11/317
Open AccessSOFTWARE
Software
Introducing W.A.T.E.R.S.: a Workflow for the
Alignment, Taxonomy, and Ecology of Ribosomal
Sequences
Amber L Hartman†1,3, Sean Riddle†2, Timothy McPhillips2, Bertram Ludäscher2 and Jonathan A Eisen*1
Abstract
Background: For more than two decades microbiologists have used a highly conserved microbial gene as a
phylogenetic marker for bacteria and archaea. The small-subunit ribosomal RNA gene, also known as 16 S rRNA, is
encoded by ribosomal DNA, 16 S rDNA, and has provided a powerful comparative tool to microbial ecologists. Over
time, the microbial ecology field has matured from small-scale studies in a select number of environments to massive
collections of sequence data that are paired with dozens of corresponding collection variables. As the complexity of
data and tool sets have grown, the need for flexible automation and maintenance of the core processes of 16 S rDNA
sequence analysis has increased correspondingly.
Results: We present WATERS, an integrated approach for 16 S rDNA analysis that bundles a suite of publicly available 16
S rDNA analysis software tools into a single software package. The "toolkit" includes sequence alignment, chimera
removal, OTU determination, taxonomy assignment, phylogentic tree construction as well as a host of ecological
analysis and visualization tools. WATERS employs a flexible, collection-oriented 'workflow' approach using the open-
source Kepler system as a platform.
Conclusions: By packaging available software tools into a single automated workflow, WATERS simplifies 16 S rDNA
analyses, especially for those without specialized bioinformatics, programming expertise. In addition, WATERS, like
some of the newer comprehensive rRNA analysis tools, allows researchers to minimize the time dedicated to carrying
out tedious informatics steps and to focus their attention instead on the biological interpretation of the results. One
advantage of WATERS over other comprehensive tools is that the use of the Kepler workflow system facilitates result
interpretation and reproducibility via a data provenance sub-system. Furthermore, new "actors" can be added to the
workflow as desired and we see WATERS as an initial seed for a sizeable and growing repository of interoperable, easy-
to-combine tools for asking increasingly complex microbial ecology questions.
Background
Microbial communities and how they are surveyed
Microbial communities abound in nature and are crucial
for the success and diversity of ecosystems. There is no
end in sight to the number of biological questions that
can be asked about microbial diversity on earth. From
animal and human guts to open ocean surfaces and deep
sea hydrothermal vents, to anaerobic mud swamps or
boiling thermal pools, to the tops of the rainforest canopy
and the frozen Antarctic tundra, the composition of
microbial communities is a source of natural history,
intellectual curiosity, and reservoir of environmental
health [1]. Microbial communities are also mediators of
insight into global warming processes [2,3], agricultural
success [4], pathogenicity [5,6], and even human obesity
[7,8].
In the mid-1980 s, researchers began to sequence ribo-
somal RNAs from environmental samples in order to
characterize the types of microbes present in those sam-
ples, (e.g., [9,10]). This general approach was revolution-
ized by the invention of the polymerase chain reaction
(PCR), which made it relatively easy to clone and then
* Correspondence: jaeisen@ucdavis.edu
1 Department of Medical Microbiology and Immunology and the Department
of Evolution and Ecology, Genome Center, University of California Davis, One
Shields Avenue, Davis, CA, 95616, USA
† Contributed equally
Full list of author information is available at the end of the article
WATERS - Kepler Workflow for rRNA
matics 2010, 11:317
.com/1471-2105/11/317
Page 2 of 14
genes for ribosomal RNA) in partic-
ubunit ribosomal RNA (ss-rRNA).
ed a large amount of previously
l diversity [1,11-13]. Researchers
all subunit rRNA gene not only
ith which it can be PCR amplified,
has variable and highly conserved
to be universally distributed among
nd it is useful for inferring phyloge-
4,15]. Since then, "cultivation-inde-
" have brought a revolution to the
by allowing scientists to study a
mount of diversity in many different
ments [16-18]. The general premise
Figure 1 Overview of WATERS. Schema of WATERS where white
boxes indicate "behind the scenes" analyses that are performed in WA-
Align
Check
chimeras
Cluster Build
Tree
Assign
Taxonomy
Tree w/
Taxonomy
Diversity
statistics &
graphs
Unifrac
files
Cytoscape
network
OTU table
Hartman et al. BMC Bioinformatics 2010, 11:317
http://www.biomedcentral.com/1471-2105/11/317
Page 3 of 14
Motivations
As outlined above, successfully processing microbial
sequence collections is far from trivial. Each step is com-
plex and usually requires significant bioinformatics
expertise and time investment prior to the biological
interpretation. In order to both increase efficiency and
ensure that all best-practice tools are easily usable, we
sought to create an "all-inclusive" method for performing
all of these bioinformatics steps together in one package.
To this end, we have built an automated, user-friendly,
workflow-based system called WATERS: a Workflow for
the Alignment, Taxonomy, and Ecology of Ribosomal
Sequences (Fig. 1). In addition to being automated and
simple to use, because WATERS is executed in the Kepler
scientific workflow system (Fig. 2) it also has the advan-
tage that it keeps track of the data lineage and provenance
of data products [23,24].
Automation
The primary motivation in building WATERS was to
minimize the technical, bioinformatics challenges that
arise when performing DNA sequence clustering, phylo-
genetic tree, and statistical analyses by automating the 16
S rDNA analysis workflow. We also hoped to exploit
additional features that workflow-based approaches
entail, such as optimized execution and data lineage
tracking and browsing [23,25-27]. In the earlier days of 16
S rDNA analysis, simply knowing which microbes were
present and whether they were biologically novel was a
noteworthy achievement. It was reasonable and expected,
therefore, to invest a large amount of time and effort to
get to that list of microbes. But now that current efforts
are significantly more advanced and often require com-
parison of dozens of factors and variables with datasets of
thousands of sequences, it is not practically feasible to
process these large collections "by hand", and hugely inef-
ficient if instead automated methods can be successfully
employed.
Broadening the user base
A second motivation and perspective is that by minimiz-
ing the technical difficulty of 16 S rDNA analysis through
the use of WATERS, we aim to make the analysis of these
datasets more widely available and allow individuals with
Figure 2 Screenshot of WATERS in Kepler software. Key features: the library of actors un-collapsed and displayed on the left-hand side, the input
and output paths where the user declares the location of their input files and desired location for the results files. Each green box is an individual Kepler
actor that performs a single action on the data stream. The connectors (black arrows) direct and hook up the actors in a defined sequence. Double-
clicking on any actor or connector allows it to be manipulated and re-arranged.
Hartman et al. BMC Bioinformatics 2010, 11:317
http://www.biomedcentral.com/1471-2105/11/317
Page 9 of
default is 97% and 99%), and they are also generated for
every metadata variable comparison that the user
includes.
Data pruning
To assist in troubleshooting and quality contro
WATERS returns to the user three fasta files of sequenc
Figure 3 Biologically similar results automatically produced by WATERS on published colonic microbiota samples. (A) Rarefaction curves sim
ilar to curves shown in Eckburg et al. Fig. 2; 70-72, indicate patient numbers, i.e., 3 different individuals. (B) Weighted Unifrac analysis based on phylo
genetic tree and OTU data produced by WATERS very similar to Eckburg et al. Fig. 3B. (C) Neighbor-joining phylogenetic tree (Quicktree) representing
the sequences analyzed by WATERS, which is clearly similar to Fig. S1 in Eckburg et al.
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12. alignment used to build the profile, resulting in a multiple
sequence alignment of full-length reference sequences and
metagenomic reads. The final step of the alignment process is a
quality control filter that 1) ensures that only homologous SSU-
rRNA sequences from the appropriate phylogenetic domain are
included in the final alignment, and 2) masks highly gapped
alignment columns (see Text S1).
We use this high quality alignment of metagenomic reads and
references sequences to construct a fully-resolved, phylogenetic
tree and hence determine the evolutionary relationships between
the reads. Reference sequences are included in this stage of the
analysis to guide the phylogenetic assignment of the relatively
short metagenomic reads. While the software can be easily
extended to incorporate a number of different phylogenetic tools
capable of analyzing metagenomic data (e.g., RAxML [27],
pplacer [28], etc.), PhylOTU currently employs FastTree as a
PD versus PID clustering, 2) to explore overlap between PhylOTU
clusters and recognized taxonomic designations, and 3) to quantify
the accuracy of PhylOTU clusters from shotgun reads relative to
those obtained from full-length sequences.
PhylOTU Clusters Recapitulate PID Clusters
We sought to identify how PD-based clustering compares to
commonly employed PID-based clustering methods by applying
the two methods to the same set of sequences. Both PID-based
clustering and PhylOTU may be used to identify OTUs from
overlapping sequences. Therefore we applied both methods to a
dataset of 508 full-length bacterial SSU-rRNA sequences (refer-
ence sequences; see above) obtained from the Ribosomal Database
Project (RDP) [25]. Recent work has demonstrated that PID is
more accurately calculated from pairwise alignments than multiple
sequence alignments [32–33], so we used ESPRIT, which
Figure 1. PhylOTU Workflow. Computational processes are represented as squares and databases are represented as cylinders in this generalize
workflow of PhylOTU. See Results section for details.
doi:10.1371/journal.pcbi.1001061.g001
Finding Metagenomic OTUs
Sharpton TJ, Riesenfeld SJ, Kembel SW, Ladau J, O'Dwyer
JP, Green JL, Eisen JA, Pollard KS. (2011) PhylOTU: A High-
Throughput Procedure Quantifies Microbial Community
Diversity and Resolves Novel Taxa from Metagenomic Data.
PLoS Comput Biol 7(1): e1001061. doi:10.1371/journal.pcbi.
1001061
OTUs via Phylogeny (PhylOTU)
Tom
Sharpton
Katie
Pollard
Jessica
Green
Finding Metagenomic OTUs
14. rRNA Gene Copy # Variation
Vetrovsky T, Baldrian P (2013) The Variability of the 16S rRNA Gene in Bacterial Genomes and Its
Consequences for Bacterial Community Analyses. PLoS ONE 8(2): e57923. doi:10.1371/journal.pone.
0057923
15. Copy # Affects Relative Abundance Estimates
Kembel SW, Wu M, Eisen JA, Green JL (2012)
Incorporating 16S Gene Copy Number
Information Improves Estimates of Microbial
Diversity and Abundance. PLoS Comput Biol
8(10): e1002743. doi:10.1371/journal.pcbi.
1002743
Steven
Kembel
Jessica
Green
Martin
Wu
16. rRNA Copy # vs. Phylogeny
Steven
Kembel
Jessica
Green
Martin
Wu
Kembel SW, Wu M, Eisen JA, Green JL (2012)
Incorporating 16S Gene Copy Number
Information Improves Estimates of Microbial
Diversity and Abundance. PLoS Comput Biol
8(10): e1002743. doi:10.1371/journal.pcbi.
1002743
17. rRNA Phylogeny Copy # Correction
Steven
Kembel
Jessica
Green
Martin
Wu
Phylogeny-Independent Contrasts
method of Felsenstein can be
used to estimate copy number
based on tree
Kembel SW, Wu M, Eisen JA, Green JL (2012)
Incorporating 16S Gene Copy Number
Information Improves Estimates of Microbial
Diversity and Abundance. PLoS Comput Biol
8(10): e1002743. doi:10.1371/journal.pcbi.
1002743
18. Corrected Copy Number Changes Inferences
Steven
Kembel
Jessica
Green
Martin
Wu
Kembel SW, Wu M, Eisen JA, Green JL (2012)
Incorporating 16S Gene Copy Number
Information Improves Estimates of Microbial
Diversity and Abundance. PLoS Comput Biol
8(10): e1002743. doi:10.1371/journal.pcbi.
1002743
20. Automated Accurate Genome Tree
Lang JM, Darling AE, Eisen JA (2013) Phylogeny of
Bacterial and Archaeal Genomes Using Conserved
Genes: Supertrees and Supermatrices. PLoS ONE
8(4): e62510. doi:10.1371/journal.pone.0062510
Jenna
Lang
Aaron
Darling
23. Culture Independent “Metagenomics”
DNA DNADNA
!24
Taxa Characters
B1 ACTGCACCTATCGTTCG
B2 ACTCCACCTATCGTTCG
E1 ACTCCAGCTATCGATCG
E2 ACTCCAGGTATCGATCG
A1 ACCCCAGCTCTCGCTCG
A2 ACCCCAGCTCTGGCTCG
New1 ACCCCAGCTCTGCCTCG
New2 AGGGGAGCTCTGCCTCG
New3 ACTCCAGCTATCGATCG
New4 ACTGCACCTATCGTTCG
RecA RecARecA
http://genomebiology.com/2008/9/10/R151 Genome Biology 2008, Volume 9, Issue 10, Article R151 Wu and Eisen R151.7
Genome Biology 2008, 9:R151
sequences are not conserved at the nucleotide level [29]. As a
result, the nr database does not actually contain many more
protein marker sequences that can be used as references than
those available from complete genome sequences.
Comparison of phylogeny-based and similarity-based phylotyping
Although our phylogeny-based phylotyping is fully auto-
mated, it still requires many more steps than, and is slower
than, similarity based phylotyping methods such as a
MEGAN [30]. Is it worth the trouble? Similarity based phylo-
typing works by searching a query sequence against a refer-
ence database such as NCBI nr and deriving taxonomic
information from the best matches or 'hits'. When species
that are closely related to the query sequence exist in the ref-
erence database, similarity-based phylotyping can work well.
However, if the reference database is a biased sample or if it
contains no closely related species to the query, then the top
hits returned could be misleading [31]. Furthermore, similar-
ity-based methods require an arbitrary similarity cut-off
value to define the top hits. Because individual bacterial
genomes and proteins can evolve at very different rates, a uni-
versal cut-off that works under all conditions does not exist.
As a result, the final results can be very subjective.
In contrast, our tree-based bracketing algorithm places the
query sequence within the context of a phylogenetic tree and
only assigns it to a taxonomic level if that level has adequate
sampling (see Materials and methods [below] for details of
the algorithm). With the well sampled species Prochlorococ-
cus marinus, for example, our method can distinguish closely
related organisms and make taxonomic identifications at the
species level. Our reanalysis of the Sargasso Sea data placed
672 sequences (3.6% of the total) within a P. marinus clade.
On the other hand, for sparsely sampled clades such as
Aquifex, assignments will be made only at the phylum level.
Thus, our phylogeny-based analysis is less susceptible to data
sampling bias than a similarity based approach, and it makes
Major phylotypes identified in Sargasso Sea metagenomic dataFigure 3
Major phylotypes identified in Sargasso Sea metagenomic data. The metagenomic data previously obtained from the Sargasso Sea was reanalyzed using
AMPHORA and the 31 protein phylogenetic markers. The microbial diversity profiles obtained from individual markers are remarkably consistent. The
breakdown of the phylotyping assignments by markers and major taxonomic groups is listed in Additional data file 5.
0
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0.5
0.6
0.7
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RpoB RpoBRpoB
Rpl4 Rpl4Rpl4 rRNA rRNArRNA
Hsp70 Hsp70Hsp70
EFTu EFTuEFTu
Many other genes
better than rRNA
25. Phylotyping w/ Protein Markers
AMPHORA
http://genomebiology.com/2008/9/10/R151 Genome Biology 2008, Volume 9, Issue 10, Article R151 Wu and Eisen R151.7
0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
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nclassified
proteobacteria
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ydiae
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yanobacteria
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dnaG
frr
infC
nusA
pgk
pyrG
rplA
rplB
rplC
rplD
rplE
rplF
rplK
rplL
rplM
rplN
rplP
rplS
rplT
rpmA
rpoB
rpsB
rpsC
rpsE
rpsI
rpsJ
rpsK
rpsM
rpsS
smpB
tsf
Relativeabundance
Martin Wu
26. GOS 1
GOS 2
GOS 3
GOS 4
GOS 5
Phylogenetic ID of Novel Lineages
Dongying
Wu
Wu D, Wu M, Halpern A, Rusch DB,
Yooseph S, Frazier M, et al. (2011)
Stalking the Fourth Domain in
Metagenomic Data: Searching for,
Discovering, and Interpreting Novel, Deep
Branches in Marker Gene Phylogenetic
Trees. PLoS ONE 6(3): e18011. doi:
10.1371/journal.pone.0018011
27. Phylosift
Input Sequences
rRNA workflow
protein workflow
profile HMMs used to align
candidates to reference alignment
Taxonomic
Summaries
parallel option
hmmalign
multiple alignment
LAST
fast candidate search
pplacer
phylogenetic placement
LAST
fast candidate search
LAST
fast candidate search
search input against references
hmmalign
multiple alignment
hmmalign
multiple alignment
Infernal
multiple alignment
LAST
fast candidate search
<600 bp
>600 bp
Sample Analysis &
Comparison
Krona plots,
Number of reads placed
for each marker gene
Edge PCA,
Tree visualization,
Bayes factor tests
eachinputsequencescannedagainstbothworkflows
Aaron Darling
@koadman
Erik Matsen
@ematsen
Holly Bik
@hollybik
Guillaume Jospin
@guillaumejospin
Darling AE, Jospin G, Lowe E,
Matsen FA IV, Bik HM, Eisen JA.
(2014) PhyloSift: phylogenetic
analysis of genomes and
metagenomes. PeerJ 2:e243
http://dx.doi.org/10.7717/peerj.
243
Erik Lowe
32. HiC
From Belton JM1, McCord RP, Gibcus JH, Naumova N, Zhan Y, Dekker J. Methods.
2012 Nov;58(3):268-76. doi: 10.1016/j.ymeth.2012.05.001. Hi-C: a comprehensive
technique to capture the conformation of genomes.
33. HiC Crosslinking & Sequencing
Beitel CW, Froenicke L, Lang JM, Korf IF, Michelmore
RW, Eisen JA, Darling AE. (2014) Strain- and plasmid-
level deconvolution of a synthetic metagenome by
sequencing proximity ligation products. PeerJ 2:e415
http://dx.doi.org/10.7717/peerj.415
Table 1 Species alignment fractions. The number of reads aligning to each replicon present in the
synthetic microbial community are shown before and after filtering, along with the percent of total
constituted by each species. The GC content (“GC”) and restriction site counts (“#R.S.”) of each replicon,
species, and strain are shown. Bur1: B. thailandensis chromosome 1. Bur2: B. thailandensis chromosome
2. Lac0: L. brevis chromosome, Lac1: L. brevis plasmid 1, Lac2: L. brevis plasmid 2, Ped: P. pentosaceus,
K12: E. coli K12 DH10B, BL21: E. coli BL21. An expanded version of this table can be found in Table S2.
Sequence Alignment % of Total Filtered % of aligned Length GC #R.S.
Lac0 10,603,204 26.17% 10,269,562 96.85% 2,291,220 0.462 629
Lac1 145,718 0.36% 145,478 99.84% 13,413 0.386 3
Lac2 691,723 1.71% 665,825 96.26% 35,595 0.385 16
Lac 11,440,645 28.23% 11,080,865 96.86% 2,340,228 0.46 648
Ped 2,084,595 5.14% 2,022,870 97.04% 1,832,387 0.373 863
BL21 12,882,177 31.79% 2,676,458 20.78% 4,558,953 0.508 508
K12 9,693,726 23.92% 1,218,281 12.57% 4,686,137 0.507 568
E. coli 22,575,903 55.71% 3,894,739 17.25% 9,245,090 0.51 1076
Bur1 1,886,054 4.65% 1,797,745 95.32% 2,914,771 0.68 144
Bur2 2,536,569 6.26% 2,464,534 97.16% 3,809,201 0.672 225
Bur 4,422,623 10.91% 4,262,279 96.37% 6,723,972 0.68 369
Figure 1 Hi-C insert distribution. The distribution of genomic distances between Hi-C read pairs is
shown for read pairs mapping to each chromosome. For each read pair the minimum path length on
the circular chromosome was calculated and read pairs separated by less than 1000 bp were discarded.
The 2.5 Mb range was divided into 100 bins of equal size and the number of read pairs in each bin
was recorded for each chromosome. Bin values for each chromosome were normalized to sum to 1 and
plotted.
E. coli K12 genome were distributed in a similar manner as previously reported (Fig. 1;
(Lieberman-Aiden et al., 2009)). We observed a minor depletion of alignments spanning
the linearization point of the E. coli K12 assembly (e.g., near coordinates 0 and 4686137)
due to edge eVects induced by BWA treating the sequence as a linear chromosome rather
than circular.
10.7717/peerj.415 9/19
Figure 2 Metagenomic Hi-C associations. The log-scaled, normalized number of Hi-C read pairs
associating each genomic replicon in the synthetic community is shown as a heat map (see color scale,
blue to yellow: low to high normalized, log scaled association rates). Bur1: B. thailandensis chromosome
1. Bur2: B. thailandensis chromosome 2. Lac0: L. brevis chromosome, Lac1: L. brevis plasmid 1, Lac2:
L. brevis plasmid 2, Ped: P. pentosaceus, K12: E. coli K12 DH10B, BL21: E. coli BL21.
reference assemblies of the members of our synthetic microbial community with the same
alignment parameters as were used in the top ranked clustering (described above). We first
Figure 3 Contigs associated by Hi-C reads. A graph is drawn with nodes depicting contigs and edges
depicting associations between contigs as indicated by aligned Hi-C read pairs, with the count thereof
depicted by the weight of edges. Nodes are colored to reflect the species to which they belong (see legend)
with node size reflecting contig size. Contigs below 5 kb and edges with weights less than 5 were excluded.
Contig associations were normalized for variation in contig size.
typically represent the reads and variant sites as a variant graph wherein variant sites are
represented as nodes, and sequence reads define edges between variant sites observed in
the same read (or read pair). We reasoned that variant graphs constructed from Hi-C
data would have much greater connectivity (where connectivity is defined as the mean
path length between randomly sampled variant positions) than graphs constructed from
mate-pair sequencing data, simply because Hi-C inserts span megabase distances. Such
Figure 4 Hi-C contact maps for replicons of Lactobacillus brevis. Contact maps show the number of
Hi-C read pairs associating each region of the L. brevis genome. The L. brevis chromosome (Lac0, (A),
Chris Beitel
@datscimed
Aaron Darling
@koadman
34. Pink Berries
PB-PSB1
(Purple sulfur bacteria)
PB-SRB1
(Sulfate reducing bacteria)
(sulfate)
(sulfide)
Wilbanks, E.G. et al (2014). Environmental Microbiology
Lizzy Wilbanks
@lizzywilbanks
36. Long Reads Help, A Lot
Moleculo
2-20 kb
Micky Kertesz,
Tim Blauwcamp
37. Long Reads Help, A Lot
Moleculo
2-20 kb
Micky Kertesz,
Tim Blauwcamp
Illumina-based
“synthetic long
reads”
38. Long Reads Help, A Lot
Hiseq & Miseq
100-250 bp
Moleculo
2-20 kb
Micky Kertesz,
Tim Blauwcamp
Illumina-based
“synthetic long
reads”
39. Long Reads Help, A Lot
Hiseq & Miseq
100-250 bp
Moleculo
2-20 kb
Pacbio RSII
2-20kb
Micky Kertesz,
Tim Blauwcamp
Meredith Ashby
Cheryl Heiner
Illumina-based
“synthetic long
reads”
Real-time single
molecule
sequencing
(p4-c2, p5-c3)
40. Long Reads Help, A Lot
Hiseq & Miseq
100-250 bp
Moleculo
2-20 kb
Pacbio RSII
2-20kb
Micky Kertesz,
Tim Blauwcamp
Meredith Ashby
Cheryl Heiner
Illumina-based
“synthetic long
reads”
Real-time single
molecule
sequencing
(p4-c2, p5-c3)
295 Megabases 474 Megabases61 Gigabases
42. Transfer of 34
S from SRB to PSB
12
C, 12
C14
N, 32
S
Biomass
(RGB composite)
Wilbanks, E.G. et al (2014). Environmental Microbiology
43. Transfer of 34
S from SRB to PSB
12
C, 12
C14
N, 32
S
Biomass
(RGB composite)
0.044 0.080
34S-incorporation
(34S/32S ratio)
Wilbanks, E.G. et al (2014). Environmental Microbiology
54. Eisen Lab Citizen Microbiology
Kitty Microbiome
Georgia Barguil
Jack Gilbert
Project MERCCURI
Phone
and
Shoes
tinyurl/kittybiome
Holly Ganz
David Coil
55. Acknowledgements
DOE JGI Sloan GBMF NSF
DHS DARPA
Aaron Darling
Lizzy
Wilbanks
Jenna Lang Russell
Neches
Rob Knight
Jack Gilbert Tanja Woyke Rob Dunn
Katie Pollard
Jessica
Green
Darlene
Cavalier
Eddy RubinWendy Brown
Dongying Wu
Phil
Hugenholtz
DSMZ
Sundar
Srijak
Bhatnagar David Coil
Alex Alexiev
Hannah
Holland-Moritz
Holly Bik
John Zhang
Holly
Menninger
Guillaume
Jospin
David Lang
Cassie
Ettinger
Tim HarkinsJennifer Gardy
Holly Ganz