Genetic engineering of glycinebetaine synthesis enhances cadmium tolerance in BADH-transgenic tobacco plants via reducing cadmium uptake and alleviating cadmium stress damage

Chongyang Li,Tianpeng Zhang,Pengwen Feng,Daxing Li,Marian Brestic,Yang Liu,Xinghong Yang

Environmental and Experimental Botany（2021）

引用 27|浏览7

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摘要

•Glycinebetaine (GB) enhances cadmium tolerance in BADH-transgenic tobacco.•GB alleviates photosystem II and I photoinhibition induced by Cd stress.•GB promotes antioxidant defense to scavenge excessive reactive oxygen species.•GB modulates PM H+-ATPase, Cd uptake and transport to reduce Cd accumulation.•GB reduces K+ efflux and enhances H+ influx in tobacco roots under Cd stress.

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关键词

Glycinebetaine,Cadmium stress,Photoprotection,Ion exchange,Oxidative defense

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