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

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

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

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