Transgenic Plant
Reducing the expression of pectin methylesterase (PME) has resulted in

tomato fruit that will not ripen
tomato juice that has higher viscosity
tomato fruit that last longer before they become rotten
plants with resistance to bacteria and fungi

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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

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

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