摘要
活性氧(reactive oxygen species,ROS)在植物种子休眠释放和萌发中发挥重要调控作用。低水平的ROS促进种子萌发,而过高水平的ROS则会降低种子活力和萌发率。穗发芽(pre-harvest sprouting,PHS)是作物的一种重要性状,严重影响作物产量和品质。穗发芽与种子休眠紧密相关,为同一性状的两种极端表现。因此,研究ROS在种子休眠和萌发中的双重作用可为揭示穗发芽的内在分子机制开辟新视角。该文总结了种子萌发时ROS的产生部位和途径,重点介绍了ROS与生物大分子、植物激素和其它小分子互作参与植物种子萌发以及萌发过程中ROS参与的信号通路,以期为ROS在作物穗发芽过程中的作用机制研究提供理论依据。
Reactive oxygen species(ROS)play an important role in the regulation of seed dormancy release and ger-mination.Low levels of ROS can promote seed germination,while excessively high levels of ROS can reduce seed vigor and germination rate.Pre-harvest sprouting(PHS)is an important agronomic trait that can cause severe decrease of crop yield and grain quality.Pre-harvest sprouting and seed dormancy are two manifestations of the same trait.Therefore,studying the dual role of ROS in seed dormancy and germination can reveal the molecular mechanisms underlying pre-harvest sprouting.For this purpose,this paper summarized the subcellular locations and metabolic pathways of ROS production during seed germination,focusing on the interaction of ROS with biomacromolecules,plant hormones and other small molecules and the signaling pathways of ROS functionalization.This review provides a theoretical basis for understanding the mechanisms of ROS in the process of crop pre-harvest sprouting.
作者
赵洁
李静
李雨欣
黄奕
杨杰
李霞
Jie Zhao;Jing Li;Yuxin Li;Yi Huang;Jie Yang;Xia Li(College of Life Sciences,Nanjing Forestry University,Nanjing 210037,China;Key Laboratory of Germplasm Innovation in Downstream of Huaihe River(Nanjing),Ministry of Agriculture and Rural Affairs of the People’s Republic of China,Zhong-shan Laboratory for Biological Breeding,Institute of Food Crops,Jiangsu Academy of Agricultural Sciences,Nanjing 210014,China;College of Life Sciences,Nanjing Agricultural University,Nanjing 210095,China;Yangzhou University/Collaborative Innovation Center for Modern Production Technology of Grain Crops of Jiangsu Province,Yangzhou 225009,China)
出处
《植物学报》
北大核心
2025年第6期978-992,共15页
Chinese Bulletin of Botany
基金
江苏省农业科技自主创新资金(No.CX(23)1001)
江苏省重点研发计划(现代农业)(No.BE2021359)
国家自然科学基金(No.31571585)
江苏省种业创新“揭榜挂帅”项目(No.JBGS(2021)038,No.JBGS(2021)039)
生物育种钟山实验室(No.ZSBBL-KY2024-01)
国际合作重点项目(No.2023YFE01117000)。
关键词
活性氧
植物激素
萌发
休眠
信号转导
reactive oxygen species
plant hormones
germination
dormancy
signal transduction
