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 GS (glutamine synthase)
gene for ALS (acetolactate synthase)
any of the above

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Transgenic Plant
Cross protection against viruses in transgenic plants can be obtained by

inoculating the susceptible strain of a crop with a mild strain of a virus that helps in developing resistance against more virulent strain
inoculating the susceptible strain with the coat proteins of virulent strain
any of the above
inoculating the susceptible strain with genes of nucleocapsid

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