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ROLE OF TRANSGENIC PLANTS IN
AGRICULTURE & BIOPHARMING
DEPARTMENT OF BOTANY
MPC AUTONOMOUS COLLEGE
PRESENTED BY:- LAXMIDHAR HEMBRAM
GUIDED BY :- MR. ANANTA KUMAR NAYAK
EXAM ROLL NO.:- IB2119048
REGD NO.:- 19004/19
CONTENT
 Introduction
 Transgenesis
 Transgenic plants
 Role
INTRODUCTION:-
 Environmental stresses, population explosion and food
shortage have caused serious problems to mankind on the
globe. The world population is increasing alarmingly and
is projected to reach 8.5 bil lion by 2025. To fulfill the
food demand of every individual from lim ited natural
resources is difficult. This, factor has resulted in food
deficiency thereby causing malnutrition, which is a serious
health problem these days. Producing crops with improved
quality and quantity is imperative for growing food
demand through sustainable agriculture that could be
attained using conventional selection and breeding or
through genetic engineering.
 It is the process of introducing an
Exogenous gene called a Transgene
into a living organism, so that the
organism will exhibit a new property
and transmit that property to its
offspring.
TRANSGENESIS:-
TRANSGENIC PLANTS:-
 Transgenic plants are plants in which one or
more genes from another species have been
introduced into the genome using genetic
engineering processes.
The aim is to introduce a new trait to the plant
which doesn’t occur natural in this species.
The inserted gene sequence in the normal
plant is known as transgene.
Example:- golden rice, Bt cotton.
ROLE:-
Herbicide
resistance
Pollen control
 Insect resistance
Virus resistance
 Altered oil content
Enhanced shelf life
Delayed fruit ripening
Pharmaceutical &
edible vaccines
 Drought, cold, salinity
resistance
Biotic & Abiotic stress
tolerance
Nutritional quality
HERBICIDE RESISTANCE:-
 Bromoxynil Resistance:-
a. A gene encoding the enzyme
Bromoxynil nitrilase (BXN) is
transferred from Klebsiella
pneumoniae bacteria to plants.
b. Nitrilase inactivates the bromoxynil
before it kills the plant.
Sulfonylurea:-
a. Kills plants by blocking an enzyme
needed for synthesis of the amino
acids valine , leucine and isoleucine.
b. Resistance generated by mutating a
gene in tobacco plants, and
transferring the mutated gene into crop
plants.
INSECT RESISTANCE:-
The Bt toxin isolated from Bacillus thuringensis has
been used in plants. The gene has been placed in corn,
cotton, and potato, and has been marketed.
Alkaline protein degrades gut wall of lepidopteron
larvae
Corn borer caterpillars
 Cotton bollworm caterpillars
Tobacco hornworm caterpillars
Gypsy moth larvae
Sprayed onto plants - but will wash off
VIRUS RESISTANCE
Chemicals are used to control the insect vectors of
viruses, but controlling the disease itself is difficult
because the disease spreads quickly.
Plants may be engineered with genes for resistance to
viruses, bacteria, and fungi.
Virus-resistant plants have a viral protein coat gene
that is overproduced, preventing the virus from
reproducing in the host cell, because the plant shuts off
the virus' protein coat gene in response to the
overproduction.
Coat protein genes are involved in resistance to
diseases such as cucumber mosaic virus, tobacco rattle
virus, and potato virus
ALTERED OIL CONTENT:-
Oil content in plants are altered by modifying an
enzyme in the fatty acid synthesis pathway (oils are
lipids, which fatty acids are a part of).
Varieties of canola and soybean plants have been
genetically engineered to produce oils with better
cooking and nutritional properties.
Genetically engineered plants may also be able to
produce oils that are used in detergents, soaps,
cosmetics, lubricants, and paints.
DELAYED FRUIT RIPENING:-
Allow for crops, such as tomatoes, to have a higher
shelf life. Tomatoes generally ripen and become soft
during shipment to a store. Tomatoes are usually picked
and sprayed with the plant hormone ethylene to induce
ripening, although this does not improve taste.
Tomatoes have been engineered to produce less
ethylene so they can develop more taste before
ripening, and shipment to markets.
POLLEN CONTROL:-
Hybrid crops are created by crossing two distantly
related varieties of the same crop plant. The method
may generate plants with favorable traits, such as tall
soybean plants that make more seeds and are resistant
to environmental pressures.
For success, plant pollination must be controlled. This
is usually done by removing the male flower parts by
hand before pollen is released. Also, sterilized plants
have been genetically engineered with a gene from the
bacteria Bacillus amyloliqueifaciens (barnase gene).
This gene is dominant gene for male sterility .
Enhanced shelf life
Pharmaceutical & edible vaccines
Biotic & Abiotic stress tolerance
Nutritional quality
ROLE:-
CONCLUSION:-
The advent of genetic engineering (GE) and other tools
has enabled plant biologists to fight against the
prevailing adversaries. The rich sources such as
carbohydrates, proteins, oils, minerals, fuels, medicines,
dyes, perfumes, flavorings and vitamins are produced
by plants. GE modifies the plant to produce reasonable
amounts of the earlier mentioned products. To
understand how the overproduction of these
biomolecules takes place in plants there is a crucial need
to elu cidate the underlying mechanisms.
THANK YOU

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laxmi (1).pptx

  • 1. ROLE OF TRANSGENIC PLANTS IN AGRICULTURE & BIOPHARMING DEPARTMENT OF BOTANY MPC AUTONOMOUS COLLEGE PRESENTED BY:- LAXMIDHAR HEMBRAM GUIDED BY :- MR. ANANTA KUMAR NAYAK EXAM ROLL NO.:- IB2119048 REGD NO.:- 19004/19
  • 3. INTRODUCTION:-  Environmental stresses, population explosion and food shortage have caused serious problems to mankind on the globe. The world population is increasing alarmingly and is projected to reach 8.5 bil lion by 2025. To fulfill the food demand of every individual from lim ited natural resources is difficult. This, factor has resulted in food deficiency thereby causing malnutrition, which is a serious health problem these days. Producing crops with improved quality and quantity is imperative for growing food demand through sustainable agriculture that could be attained using conventional selection and breeding or through genetic engineering.
  • 4.  It is the process of introducing an Exogenous gene called a Transgene into a living organism, so that the organism will exhibit a new property and transmit that property to its offspring. TRANSGENESIS:-
  • 5. TRANSGENIC PLANTS:-  Transgenic plants are plants in which one or more genes from another species have been introduced into the genome using genetic engineering processes. The aim is to introduce a new trait to the plant which doesn’t occur natural in this species. The inserted gene sequence in the normal plant is known as transgene. Example:- golden rice, Bt cotton.
  • 6. ROLE:- Herbicide resistance Pollen control  Insect resistance Virus resistance  Altered oil content Enhanced shelf life Delayed fruit ripening Pharmaceutical & edible vaccines  Drought, cold, salinity resistance Biotic & Abiotic stress tolerance Nutritional quality
  • 7. HERBICIDE RESISTANCE:-  Bromoxynil Resistance:- a. A gene encoding the enzyme Bromoxynil nitrilase (BXN) is transferred from Klebsiella pneumoniae bacteria to plants. b. Nitrilase inactivates the bromoxynil before it kills the plant.
  • 8. Sulfonylurea:- a. Kills plants by blocking an enzyme needed for synthesis of the amino acids valine , leucine and isoleucine. b. Resistance generated by mutating a gene in tobacco plants, and transferring the mutated gene into crop plants.
  • 9. INSECT RESISTANCE:- The Bt toxin isolated from Bacillus thuringensis has been used in plants. The gene has been placed in corn, cotton, and potato, and has been marketed. Alkaline protein degrades gut wall of lepidopteron larvae Corn borer caterpillars  Cotton bollworm caterpillars Tobacco hornworm caterpillars Gypsy moth larvae Sprayed onto plants - but will wash off
  • 10. VIRUS RESISTANCE Chemicals are used to control the insect vectors of viruses, but controlling the disease itself is difficult because the disease spreads quickly. Plants may be engineered with genes for resistance to viruses, bacteria, and fungi. Virus-resistant plants have a viral protein coat gene that is overproduced, preventing the virus from reproducing in the host cell, because the plant shuts off the virus' protein coat gene in response to the overproduction. Coat protein genes are involved in resistance to diseases such as cucumber mosaic virus, tobacco rattle virus, and potato virus
  • 11. ALTERED OIL CONTENT:- Oil content in plants are altered by modifying an enzyme in the fatty acid synthesis pathway (oils are lipids, which fatty acids are a part of). Varieties of canola and soybean plants have been genetically engineered to produce oils with better cooking and nutritional properties. Genetically engineered plants may also be able to produce oils that are used in detergents, soaps, cosmetics, lubricants, and paints.
  • 12. DELAYED FRUIT RIPENING:- Allow for crops, such as tomatoes, to have a higher shelf life. Tomatoes generally ripen and become soft during shipment to a store. Tomatoes are usually picked and sprayed with the plant hormone ethylene to induce ripening, although this does not improve taste. Tomatoes have been engineered to produce less ethylene so they can develop more taste before ripening, and shipment to markets.
  • 13. POLLEN CONTROL:- Hybrid crops are created by crossing two distantly related varieties of the same crop plant. The method may generate plants with favorable traits, such as tall soybean plants that make more seeds and are resistant to environmental pressures. For success, plant pollination must be controlled. This is usually done by removing the male flower parts by hand before pollen is released. Also, sterilized plants have been genetically engineered with a gene from the bacteria Bacillus amyloliqueifaciens (barnase gene). This gene is dominant gene for male sterility .
  • 14. Enhanced shelf life Pharmaceutical & edible vaccines Biotic & Abiotic stress tolerance Nutritional quality ROLE:-
  • 15. CONCLUSION:- The advent of genetic engineering (GE) and other tools has enabled plant biologists to fight against the prevailing adversaries. The rich sources such as carbohydrates, proteins, oils, minerals, fuels, medicines, dyes, perfumes, flavorings and vitamins are produced by plants. GE modifies the plant to produce reasonable amounts of the earlier mentioned products. To understand how the overproduction of these biomolecules takes place in plants there is a crucial need to elu cidate the underlying mechanisms.