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
increasing evaporative cooling from leaf surfaces
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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Transgenic Plant
Transplastomics

produces genes that are released in pollen
targets genes in the chloroplast
offers little opportunity for practical use
provides exceptionally low yields of protein products

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