shahbaz husain@G.M crops

2. ACKNOWLEDGEMENT
• I would like to express my special thanks of
gratitude to our Dean Ag. Professor.
SAMSHER SINGH, H.O.D. Professor. S.K.
BHATNAGAR sir, Dr. PURUSHOTTAM sir,
and Dr. ARCHANA BHATNAGAR mam ,
OIC OF BASIC SCIENCE AND HUMANITY,
who gave me the golden opportunity to do
this wonderful project on the topic
(TRANSGENIC PLANTS), Secondly i would
also like to thank my instructor Ms. AASTHA
MAM and Ms. SWARNA MAM for their
support and guidance at the topic.

3. Presented by:
ADARSH PATHAK
SHAHBAZ HUSAIN

4. contents

5. Introduction
Transgenic plants are the results of modern
biotechnology.
An organism containing a transgene
introduced by technological (not breeding)
methods is called transgenic.
Transgenes are the genetically engineered
gene added to a species.
The process of producing transgenic
organism is called transgenesis.

6. PLANT TRANSFORMATION METHODS
Transfer of DNA via a vector:
»Agrobacterium
Direct transfer of DNA:
»gene guns
»electroporation
»microinjection

7. Agrobacterium mediated method
• Agrobacterium-mediated transformation
is most commonly used method for
transgenesis.
• A.tumefaciens is a rod shaped Gram
negative soil bacterium found in the
rhizosphere.
• It contains Ti plasmid(tumor-inducing)
which causes crown gall disease in dicot
plants.
• It mainly infect the wound site and
causes disease symptoms.

8. Gene gun method
The method was first used by Klein et
al.(1987) to transform epidermal cell of
Allium cepa.
This method is mainly used for cereals
transformation.
Good for plants that cannot be transformed
by Agrobacterium, e.g. most monocot
DNA is bound to tiny particles of gold or
tungsten which are subsequently shot into
plant tissue or single plant cells under high
pressure.The particles penetrate both
the cellwall and membranes.

9. Electroporation
• In this technique , short
pulses of high voltage are
applied to protoplasts
which make temporary
pores in the plasma
membrane to increase
their permeability and
facilitate the uptake of
foreign gene.

10. Microinjection method
 Microinjection involves direct physical approach in
depositing DNA into specific target cells.
 The protoplasts are immobilized in agarose or on
glass slides coated with poly-lysine or by holding
them under suction by a micropipette.
 The exogenous DNA of interest is taken in
microinjector and then directly delivered inside the
cell.
 Micromanipulator is used for microinjection of the
DNA.
 A maximum of 40-50 protoplasts can be
microinjected in one hour.
 Successful transformation by microinjection of
cells has been achieved in tobacco,alfalfa etc.

12. Applications
Insect resistant cotton – Bt toxin kills
the cotton boll worm
transgene = Bt gene from Bacillus
thuringensis
Insect resistant corn – Bt toxin kills
the European corn borer.
transgene = Bt protein

13. Herbicide resistant crops -
soybean, corn, canola
•Transgene = EPSP synthase
Virus resistance papaya- resistant to
papaya ring spot virus
•Transgene = virus coat protein

14. Transgenic plants in India
India cultivated its first transgenic Bt cotton crop,
which was developed in the private sector, on 0.05
million hectares in the year 2002.
In 2009, transgenic Bt cotton was cultivated by 5.6
million farmers on 8.6 million hectares.
India now occupies second position in terms of
global cotton production by turning out 35 million
bales of cotton in 2010.

15. ADVANTAGES AND
DISADVANTAGES OF
G.M CROPS

19. DISADVANTAGES OF
G.M CROPS

20. 1- Genetically Modified ingredients can cause cancer
• A consultant histopathologist
Doctor- Stanley Ewan, raised
the concern that food and
water contaminated with
genetically engineered
material could increase the
growth of malignant tumor's
upon contact with humans.

21. 2. It could raise new allergy outbreaks in humans
• It was found that a
genetically engineered
soya bean containing
Brazilian nut protein was
allergenic to humans and
was withdrawn from
production

22. 3. Adverse effects on the immune system
• A study in 2008 showed that
feeding mice engineered food for
30 days caused an immune
reaction and altered the number
of cells that regulated the immune
functions in the body

23. 4.Pesticide resistant food can create super-creatures
• It’s not a joke, modified genes
in engineered crops that resist
pesticides can transfer to
insects and pests; making them
pesticide resistant. These
super-organisms cannot be
controlled easily which will
create problems in managing
their numbers and to crop
production in future

24. CONCLUSION
Transgenic plants have the potential to
solve many of the world's hunger and
malnutrition problems, and to help
protect and preserve the environment
by increasing yield and reducing
reliance upon chemical pesticides and
herbicides.