Terminator Technology GURT

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22 Οκτ 2013 (πριν από 4 χρόνια και 17 μέρες)

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Terminator Technology

GURT

Genetic Use Restriction Technology




Methods

for

restricting

the

use

of

genetically

modified

plants

by

causing

second

generation

seeds

to

be

sterile
.



suicide seeds


Two types of GURT:



V
-
GURT (Varietal GURT ):

This type of GURT
produces sterile seeds meaning that a farmer that had
purchased seeds containing V
-
GURT technology
could not save the seed from this crop for future
planting



T
-
GURT (Trait GURT):

A second type of GURT
modifies a crop in such a way that the genetic
enhancement engineered into the crop does not
function until the crop plant is treated with a chemical
that is sold by the biotechnology company

GURT: Advantages/ Disadvantages

Possible advantages


Intellectual property protection of Biotech firms.


Reduce the propagation of volunteer plants.


Prohibit non V
-
GURT grain sprouting, which lowers the quality
of grain.


Prevent escape of transgenes into wild relatives and prevent
any impact on biodiversity.


Possible disadvantages


Suicidal condition for farmers.


United Nations Convention on Biological Diversity



recommended a
de facto

moratorium.


India and Brazil have already passed national laws to



prohibit the technology

In 1999 the biotechnology giant Monsanto decided that they
would never commercialize '
terminator gene
' technology.


How the Terminator terminates ?


The terminator technology consists of three genes with their on/off
switches :

Gene I: Repressor





Gene II: Recombinase




Gene III: Toxin

A gene for a toxin lethal to embryos (
Toxin Gene
) is controlled by
a late promoter (
LP
), that is active only during the late stage of
seed development when the embryo is developing.

How the Terminator terminates ?


The terminator technology consists of three genes:

In the

absence of the Inducer

How the Terminator terminates ?


The terminator technology consists of three genes:

In the

presence of the Inducer

How the Terminator terminates ?


The terminator technology consists of three genes:

In the

presence of the Inducer