Transgenic Plant
Tomatoes exhibiting delayed ripening express antisense RNA against

ACC deaminase
sucrose phosphate synthase gene
polygalactouranase
glycerol 1 phosphate acyl transferase

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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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