植物在高温胁迫下的生理研究进展

高温是影响当前农业生产的主要的不利环境因子之一。根据高温胁迫下植物的生理机制研究进展,本文综述了植物在高温逆境下其生物膜的稳定性,氧化物和抗氧化系之间的平衡、胺的代谢、光合作用、热激蛋白的变化情况和其耐热性的机制,以及植物体内信号物质脱落酸(ABA),钙离子(Ca2 ),水杨酸(SA),茉莉酸(JA)对高温胁迫的响应。高温胁迫可以诱导内源脱落酸(ABA),钙离子(Ca2 ),水杨酸(SA),茉莉酸(JA)含量的增加,同时对应的几种外源的信号物质也可以提高植物的抗性。最后就今后这方面研究方向提出了思考。

A Review on Plant Heat Stress Physiology

Heat stress is an important factor which influences agricultural production. On The basis of advances of studies on heat stress physiology of plant, the paper reviewed the changes of the stability of membrane, antioxidant metabolism, polyamine metabolism, heat protein, photosynthesis and their thermotolerance mechanism. Moreover, responses of ABA, Ca2 , SA, JA to heat stress. Heat stress increases the content of ABA, Ca2 , SA, JA in plants; The same time, external signal molar can enhanced thermotolerance of plants. Further research ideas for signal transduction of heat stress are suggested.