Transgenic Plant
Resistance to sulphonyl urea compounds in transgenic tobacco plant has been developed by the transfer of

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

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Transgenic Plant
Antisense technology

alters or transfers cells
selectively blocks expression of a gene
combines organelles and cells
combines genetic material from different species

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Transgenic Plant
Low temperatures induce the expression of many cold-induced genes. Transgenic plants with improved cold tolerance have been produced by

increasing evaporative cooling from leaf surfaces
cooling plants using the Peltier effect
expressing a gene for production of antifreeze (ethylene glycol) in plants
expressing the protein that activates expression of these genes all the time in plants

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