活性氧在植物非生物胁迫响应中功能的研究进展

Advances in the function of reactive oxygen species in plant responses to abiotic stresses

活性氧(ROS)是植物在响应非生物胁迫过程中不可或缺的组成部分。适量的ROS可通过参与信号转导途径调节植物响应多种胁迫,而过量的ROS致使植物处于氧化应激状态。植物中每个亚细胞室都含有一套独立的ROS产生和清除途径,各自的ROS稳态水平及氧化还原状态也在不断发生变化,表现出各自独特的ROS特征。本文综述了近年来有关ROS在植物非生物胁迫响应过程中功能的研究进展及其在介导快速系统信号转导中的作用,为深入研究ROS在植物非生物胁迫响应中的功能提供参考。

Reactive oxygen species（ROS） are an integral part of plant responses to abiotic stresses.Appropriate ROS may participate in signal transduction pathways regulating plant responses to various stresses,but excessive ROS can expose plants to oxidative stress.Each subcellular compartment of plants contains a set of its own ROS-producing and-scavenging pathways,and their ROS steady-state levels and redox status are constantly changing,as these each unique ROS signature emerge.To provide a reference for further study on the roles of ROS in plant responses to abiotic stresses,recent advances in the functions of ROS in plant responses to abiotic stresses and mediating rapid systemic signal transduction during abiotic stresses are reviewed.