Transgenic Plant
Resistance to glyphosphate in transgenic petunia plants has been developed by the transfer of

gene for EPSPS(5-enol-pyruvyl shikimat 3 phosphate synthase)
gene for ALS (acetolactate synthase)
any of the above
gene for GS (glutamine synthase)

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Transgenic Plant
Expression of antisense RNA in transgenic plants is a general method used to

activate the expression of all genes in a biochemical pathway
reduce or eliminate the expression of individual genes
block the expression of virus coat protein genes
eliminate the expression of all genes in a biochemical pathway

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Transgenic Plant
In transgenic plants that have been manipulated to express patho-genesis-related (PR) proteins all the time it has been shown that

these provide no protection at all against pathogens
expression of two PR proteins provides some protection against a few pathogens
expression of one PR protein provides high levels of protection against many pathogens
these proteins trigger the production of other antimicrobial defenses

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