植物逆境驯化作用的生理与分子机制研究进展

Research on the Physiological and Molecular Mechanism of Stress Acclimation in Plants

植物在生长发育过程中要面对各种生物和非生物胁迫,目前对于植物应对胁迫的研究较为充分。在自然界中,各种逆境胁迫因子对植物的影响更多的是渐变的,逐渐积累的,在此过程中植物会通过驯化的方式适应这种形式的胁迫。尽管有关驯化作用提高植物耐逆性的研究有些报道,但其生理与分子机制现在还不十分清楚。本文主要介绍了植物应对病虫,冷,热,高盐4种环境因子的驯化过程的研究进展,同时总结了驯化过程的生理与分子机制,包括非激活状态的信号分子的积累以及表观遗传学修饰等。

Plants are confronted with various biotic and abiotic stresses during their growth and development processes. Nowadays, many researches on plant dealing with stresses have been performed. In nature, all kinds of environmental stress factors are more likely to affect plants in a gradual and cumulative way, and meanwhile plants cope with them by acclimation. Although there are some reports that acclimation can increase plant tolerance to abiotic stresses, the physiological and molecular mechanism of acclimation is unclear. In this review we introduced four stress acclimation processes, including disease, cold, heat and salt. We also summarized the physiological and molecular mechanism of acclimation, such as the accumulation of inactivated signal molecules, epigenetic modification and so on.