逆境条件下植物体内活性氧代谢研究进展  

Research Advances of Reactive Oxygen Species in Plants under Environmental Stress

作　　者：徐松华 XU Songhua(Ecological Environment Monitoring Station of Yuexi County,Anqing 246600,China)

机构地区：[1]安庆市岳西县生态环境监测站,安徽安庆246600

出　　处：《安徽农学通报》2021年第21期29-32,共4页Anhui Agricultural Science Bulletin

摘　　要：活性氧是一类具有很强的氧化能力的含氧物质。当植物遭受逆境胁迫时,其体内活性氧会过量积累,导致发生氧化性胁迫,因而必须依靠抗氧化酶系统对抗这种胁迫。该文主要介绍了活性氧代谢的产生和清除机制以及活性氧的影响因素,并综述了近年来在逆境条件下超氧化物歧化酶、过氧化氢酶、过氧化物酶等活性氧清除酶系统的代谢作用机制,探讨了环境胁迫下活性氧代谢的应答规律与机制,为植物适应性机制和逆境生理学研究提供参考。Reactive oxygen species(ROS)are a kind of oxygen-containing substances with strong oxidizing ability.Reactive oxygen species will accumulate excessively in plants while plants are under stress,which will lead to oxida⁃tive stress in plants.It is necessary to rely on the antioxidant enzyme system to combat this stress.This paper mainly introduces the generation and removal mechanism of reactive oxygen species,and its influence factors of reactive oxy⁃gen species,and reveals the generation and removal mechanism of active oxygen enzyme system such as superoxide dismutase,catalase,peroxidase and so on,discusses the environmental response mechanism of active oxygen metabo⁃lism,which provides a scientific basis for the study of plant adaptive mechanism and stress physiology.

关 键 词：活性氧代谢 抗氧化酶 逆境胁迫 适应性机制 

分 类 号：Q945[生物学—植物学]