Choudhary Anuj, Kumar Antul, Kaur Nirmaljit
Department of Botany, College of Basic Sciences and Humanities, Punjab Agricultural University, Ludhiana, 141004, Punjab, India.
Plant Divers. 2019 Oct 28;42(1):33-43. doi: 10.1016/j.pld.2019.10.002. eCollection 2020 Feb.
Reactive oxygen species (ROS) are widely generated in various redox reactions in plants. In earlier studies, ROS were considered toxic byproducts of aerobic metabolism. In recent years, it has become clear that ROS act as plant signaling molecules that participate in various processes such as growth and development. Several studies have elucidated the roles of ROS from seed germination to senescence. However, there is much to discover about the diverse roles of ROS as signaling molecules and their mechanisms of sensing and response. ROS may provide possible benefits to plant physiological processes by supporting cellular proliferation in cells that maintain basal levels prior to oxidative effects. Although ROS are largely perceived as either negative by-products of aerobic metabolism or makers for plant stress, elucidating the range of functions that ROS play in growth and development still require attention.
活性氧（ROS）在植物的各种氧化还原反应中广泛产生。在早期研究中，ROS被认为是有氧代谢的有毒副产物。近年来，人们已经清楚地认识到ROS作为植物信号分子参与诸如生长和发育等各种过程。多项研究阐明了ROS从种子萌发到衰老的作用。然而，关于ROS作为信号分子的多种作用及其感知和响应机制仍有许多有待发现之处。ROS可能通过支持在氧化作用之前维持基础水平的细胞中的细胞增殖，为植物生理过程提供潜在益处。尽管ROS在很大程度上被视为有氧代谢的负面副产物或植物应激的标志物，但阐明ROS在生长和发育中所起的功能范围仍需要关注。
