植物光系统Ⅱ中PsbS亚基在非光化学猝灭反应中的研究进展  

Research Progresses on the Relationship Between PsbS Subunits and Non-Photochemical Quenching in Plant PhotosystemⅡ

作　　者：周繁树 董臣[2] 位芳[1] 郭玉双 王燃[1] Zhou Fanshu;Dong Chen;Wei Fang;Guo Yushuang;Wang Ran(School of Agricultural Sciences,Zhengzhou University,Zhengzhou,450001;College of Biological Engineering,Henan University of Technology,Zhengzhou,450001;Molecular Genetics Key Laboratory ofChina Tobacco,Guizhou Academy of Tobacco Science,Guiyang,550081)

机构地区：[1]郑州大学农学院,郑州450001 [2]河南工业大学生物工程学院,郑州450001 [3]贵州省烟草科学研究院,烟草行业分子遗传重点实验室,贵阳550081

出　　处：《分子植物育种》2025年第1期173-181,共9页Molecular Plant Breeding

基　　金：中国烟草总公司烟草基因组计划重大专项[110202001030(JY-13)]资助。

摘　　要：在自然界中,光的供应并不是恒定的。植物在光能过饱和条件下,吸收超过光合作用中可利用的能量会产生活性氧成分,导致光氧化损伤和光抑制现象。非光化学猝灭(non-photochemical quenching,NPQ)是植物PSⅡ(PhotosystemⅡ)中过剩光能耗散的关键方式。研究表明,PsbS蛋白是植物光系统Ⅱ蛋白复合体的组成蛋白成分之一,是非光化学猝灭(NPQ)主要成分qE激活的关键要素之一,参与植物将过量的光能转化为热能形式而耗散的光保护机制。本研究综述了近几年来植物PsbS蛋白结构特征和相关功能的研究进展,以期为不断探索NPQ分子作用机制相关的生物学功能提供参考和依据。In nature,the supply of light is not constant.Under the condition of supersaturation of light energy,plants absorb more energy than can be used in photosynthesis.In this process,reactive oxygen species are produced and result in photooxidative damage and photoinhibition.NPQ(Non-photochemical quenching)is the key method,dissipating excess light energy,in plant PSⅡ(PhotosystemⅡ).Studies have shown that PsbS protein is not only one of the protein components of plant PSⅡprotein complex,but also one of the key elements of NPQ main component qE activation.It participates in the photoprotection mechanism that plants dissipate excessive light energy by converting into heat energy.The review summarized the structural characteristics and related functions of PsbS proteins,which would provide reference and basis for further exploration of biological functions related to the molecular mechanism of NPQ.

关 键 词：PSBS 非光化学猝灭(NPQ) 光系统Ⅱ(PSⅡ) 

分 类 号：Q945.11[生物学—植物学]