WATER MOLDS BP221507 NANDHINI.pptx
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Oomycetes, also known as water molds, are fungus-like protists that resemble fungi physically but have cellulose rather than chitin in their cell walls. They feed on decaying organic material and reproduce both sexually and asexually, with their asexual spores called zoospores being able to swim using two flagella. Certain water molds are parasites of plants, fish, and other organisms, causing diseases. While most species live saprophytically on dead matter, some cause economically significant plant diseases and fish diseases.
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Role of microbes in pollution indication
Microbes can serve as bioindicators of pollution in the environment. Different types of microbes indicate different types of pollution, such as algae indicating organic pollution and lichens being sensitive to air pollution like nitrogen oxides. Bacteria are the most abundant microbes in wastewater and changes in their presence and activity can signify the condition of the wastewater treatment process. Viruses can also act as indicators of human fecal pollution in aquatic environments. Overall, monitoring microbes allows for a cost-effective way to assess pollution levels and the performance of treatment systems.
Algae (1).pdf
1. Algae are a diverse group of photosynthetic organisms that can be unicellular or multicellular and exist in nearly every habitat on Earth.
2. They exhibit a wide range of thallus organizations from unicellular to colonial to filamentous to parenchymatous thalli.
3. Algae are found in aquatic environments like oceans, lakes and rivers as well as terrestrial, symbiotic, parasitic and extreme habitats like hot springs or polar regions.
Unit 20 Protists And Fungi
The kingdom Protista is extremely diverse and contains eukaryotic organisms that are not classified as animals, plants, or fungi. Protists can be animal-like, plantlike, or funguslike. Animal-like protists are often single-celled heterotrophs that feed on other organisms, while plantlike protists, like algae, conduct photosynthesis. Funguslike protists decompose dead organic matter. Protists play important roles in ecosystems and some can cause serious diseases.
Microorganisms Friend and Foe(Part-1)
Microorganisms are living things too small to be seen with the naked eye, including bacteria, algae, protozoa, and some microscopic animals. The main types of microorganisms are bacteria, fungi, algae, protozoa, and viruses. Bacteria come in different shapes and sizes, can be found everywhere, and do not have a nucleus. Fungi feed on dead and decaying matter or other organisms using thread-like hyphae and mycelium. Algae are mostly aquatic and can be unicellular or multicellular. Protozoa are generally found in moist environments and water and are mostly unicellular. Viruses are the smallest and can only grow inside other living cells
Similarities and dissimilarities of algae and plants
Algae and plants share some similarities such as both undergoing photosynthesis and having chloroplasts with chlorophyll. However, they also have key differences. Algae typically live in water and are unicellular or simple multicellular organisms lacking roots, stems, and leaves. In contrast, plants have evolved to live on land and are complex multicellular organisms differentiated into these specialized structures. While both reproduce sexually, algae do not form embryos like plants.
Oomycetes
The oomycetes, also known as water molds, are a diverse group of microorganisms that include many devastating plant pathogens. They can live as saprotrophs breaking down decaying matter or as parasites on plants. The potato blight caused by Phytophthora infestans resulted in the Great Irish Famine of 1845. Oomycetes reproduce both sexually and asexually, with asexual reproduction involving the production of motile zoospores inside sporangia. They include some of the most damaging agricultural parasites and have helped scientists understand the evolution from aquatic to terrestrial lifestyles.
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- 1. SUBMITTED BY BP221507 Nandhini.M I-M,Sc .Applied Microbiology
- 2. Oomycetes are water molds fungus like protists that feed on decaying organic mateerial by absorbing nutrients through their cell walls which are made of cellulose. Water moulds or oomycetes are as a group of filamentous,unicellular protists physically resembling fungi
- 3. The water molds resemble other fungi because they have branched filaments and form spores . However the water molds have cellulose in their cell walls while other fungi have chitin Oomycetes have a complex reproduction cycle which icludes flagella bear ing zoospores. Certain water molds are parasites of fish
- 4. Oomycota –the water molds. Oomycetes (a term used to refer to organisms in the phylum oomycota) are a group of fungus like organisms that rely on water for completion of their life cycle hence the common name “water molds”
- 5. water molds produce a asexual spores known as zoospores ,which move through surface water (such as rain or dew plants ). Because water moulds are aggressive plant pathogens they are economically and scientifically significant. some species can cause disease in various kinds of fishes as well. WATER MOLDS MOVE : Oomycetes also known as water molds are pathogenic microorganisms that resemble fungi and are responsible for a group of diseases affecting several plant species zoospores self propelled spores of oomycetes swim to their target using two flagella one opposite the other.
- 6. whilte water molds indicates that your pools isn’t properly balanced .and if that’s the case it’s time to pause swimming until it’s out of there,your pool is cleaned and your water is rebalanced. WATER MOLDS DISEASES: water molds properly called oomycetes are fungus like organisms.water molds cause diseases such as downy mildew pythium root rot and phytohthora root rot. the most common water molds in interioscapes are the root rots water molds produce a spore stage that is adapted to spread by swimming in water.
- 7. Many water molds live in fresh or brackish water or wet soils.most species are saprotrophic (i.e., they live on dead or decaying organic matter) although some cause diseases in certain fishes ,plant ,algae,protozoan,and marine invertebrates .common genera include ACHLYA ,LEPTOLEGNIA AND SAPROLEGNIA.