Transgenic Plant
Transgenic plants with increased tolerance to aluminum have been produced by making plants that

bind aluminum to the cell wall
secrete phytosiderophores into the soil
make more metal-binding peptides like phytochelatins
secrete citrate into the soil

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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

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

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