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

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

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Transgenic Plant
Expression of antisense RNA in transgenic plants is a general method used to

eliminate the expression of all genes in a biochemical pathway
reduce or eliminate the expression of individual genes
activate the expression of all genes in a biochemical pathway
block the expression of virus coat protein genes

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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
expressing a gene for production of antifreeze (ethylene glycol) in plants
cooling plants using the Peltier effect
increasing evaporative cooling from leaf surfaces

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