PJB-2020-489
Genetic Transformation of CodA Gene and its Application in Plant Stress Tolerance
Jia Zhang
Abstract
Glycine betaine (GB) is an effective soluble substance, it is also a good penetration regulator which can respond to abiotic stress, such as protecting plants from extreme temperature, drought, salinity, frost, low-phosphate and so on. Genetically engineered synthesis of GB biosynthetic enzymes and studies of transgenic plants are the research hot-spots of research now. Transgenic approaches which increase plants’ tolerance to abiotic stress have enhanced our understanding the mechanisms of that protection against such stresses. Choline oxidase gene (codA gene) is found in soil bacteria Arthrobacter globiformis, which encodes choline oxidase. This enzyme can synthesize glycine betaine with acetylcholine, and it does not need any auxiliary factors. Therefore, the codA-transgenic plants have a wide application prospect and codA gene has been widely used to generate transgenic plants till now. In this paper, we have discussed what plants had been transfered and the function of it.
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