Arabidopsis Thaliana

neighgreasycornerBiotechnology

Dec 14, 2012 (4 years and 8 months ago)

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Arabidopsis thaliana

The Model Plant for

Genetic Engineering



By Mike Douglas

and Joanna Naymark




Why Is Arabidopsis a

Model Plant?




Relative genetic simplicity



Convenience and abundance



Susceptibility to T
-
DNA insertions



Basic similarities to other crops

Other Model Organisms

Arabidopsis Genome



Small genome composed of approximately
25,700 genes



5 chromosomes



Genome mapping


project completed


due to
internationally



coordinated program

Convenience


Easy to grow



Small plant size means tens of thousands
can be grown at a time



6
-
8 weeks from seeds to seeds



Massive seed production (potential up to
10,000 seeds per plant)




Ability of
Arabidopsis thaliana

to self
-
fertilize



Making Knockout Plants



Easily susceptible to
Agrobacterium

which contain Ti plasmids, the
vehicles for T
-
DNA insertion



Easy to establish
many

knockout lines
in short amount of time


Significance of Arabidopsis
in Plant Genetics



Basic life processes similar to those of
more complex crop plants such as
corn, soybean, and wheat



It can be assumed that the basic set
of genes that control these processes
are the same, making findings
applicable to other species

Ultimate goals


Discoveries applicable in genetic
engineering of crop varieties with
disease and insect resistance, and
other enhanced production qualities


*
Startling fact
: In the next 50 years, we
will need to produce more food than in
the whole of human history and do it on
the same or less amount of arable land.


Summary


Arabidopsis is a useful model plant


Simple genome


Easy maintenance and space
-
efficient


Applicable similarities with other plants



Potential to help increase food
production quantity and quality to
feed a growing world population