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Multiple roles of oxygen in the photoinactivation and dynamic repair of Photosystem II in spinach leaves
Fan, Da-Yong; Ye, Zi-Piao; Wang, Shi-Chang; Chow, Wah Soon1
2016
发表期刊PHOTOSYNTHESIS RESEARCH
ISSN0166-8595
卷号127期号:3页码:307-319
摘要Oxygen effects have long been ambiguous: exacerbating, being indifferent to, or ameliorating the net photoinactivation of Photosystem II (PS II). We scrutinized the time course of PS II photoinactivation (characterized by rate coefficient k(i)) in the absence of repair, or when recovery (characterized by k(r)) occurred simultaneously in CO2 +/- O-2. Oxygen exacerbated photoinactivation per se, but alleviated it by mediating the utilization of electrons. With repair permitted, the gradual net loss of functional PS II during illumination of leaves was better described phenomenologically by introducing tau, the time for an initial k(r) to decrease by half. At 1500 mu mol photons m(-2) s(-1), oxygen decreased the initial k(r) but increased tau. Similarly, at even higher irradiance in air, there was a further decrease in the initial k(r) and increase in tau. These observations are consistent with an empirical model that (1) oxygen increased k(i) via oxidative stress but decreased it by mediating the utilization of electrons; and (2) reactive oxygen species stimulated the degradation of photodamaged D1 protein in PS II (characterized by k(d)), but inhibited the de novo synthesis of D1 (characterized by k(s)), and that the balance between these effects determines the net effect of O-2 on PS II functionality.
关键词Oxygen effects Photoinactivation Photoinhibition Photosystem II Recovery from photoinactivation Reactive oxygen species
学科领域Plant Sciences
DOI10.1007/s11120-015-0185-y
收录类别SCI
语种英语
WOS关键词CHLOROPLAST-PROTEIN-SYNTHESIS ; WHOLE-TISSUE DETERMINATION ; CYCLIC ELECTRON FLOW ; P700 REDOX KINETICS ; SINGLET OXYGEN ; D1 PROTEIN ; IN-VIVO ; PHOTO-RESPIRATION ; OXIDATIVE STRESS ; TOBACCO-LEAVES
WOS研究方向Science Citation Index Expanded (SCI-EXPANDED)
WOS记录号WOS:000371149700003
出版者SPRINGER
文献子类Article
出版地DORDRECHT
EISSN1573-5079
资助机构Australian Research CouncilAustralian Research Council [DP1093872] ; Chinese Academy of SciencesChinese Academy of Sciences [KZCX2-XB3-09-02] ; NNSF of ChinaNational Natural Science Foundation of China (NSFC) [31370424]
作者邮箱Fred.Chow@anu.edu.au
引用统计
被引频次:11[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ibcas.ac.cn/handle/2S10CLM1/25197
专题植被与环境变化国家重点实验室
作者单位1.[Fan, Da-Yong
2.Chinese Acad Sci, Inst Bot, State Key Lab Vegetat & Environm Change, Beijing 100093, Peoples R China
3.Australian Natl Univ, Div Plant Sci, Res Sch Biol, 46 Sullivans Creek Rd, Acton, ACT 2601, Australia
4.Jinggangshan Univ, Sch Life Sci, Jian 343009, Jiangxi, Peoples R China
5.Jinggangshan Univ, Coll Math & Phys, Jian 343009, Jiangxi, Peoples R China
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Fan, Da-Yong,Ye, Zi-Piao,Wang, Shi-Chang,et al. Multiple roles of oxygen in the photoinactivation and dynamic repair of Photosystem II in spinach leaves[J]. PHOTOSYNTHESIS RESEARCH,2016,127(3):307-319.
APA Fan, Da-Yong,Ye, Zi-Piao,Wang, Shi-Chang,&Chow, Wah Soon.(2016).Multiple roles of oxygen in the photoinactivation and dynamic repair of Photosystem II in spinach leaves.PHOTOSYNTHESIS RESEARCH,127(3),307-319.
MLA Fan, Da-Yong,et al."Multiple roles of oxygen in the photoinactivation and dynamic repair of Photosystem II in spinach leaves".PHOTOSYNTHESIS RESEARCH 127.3(2016):307-319.
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