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Contribution of the Alternative Respiratory Pathway to PSII Photoprotection in C3 and C4 Plants
Zhang, Zi-Shan1,2,3; Liu, Mei-Jun1,2; Scheibe, Renate4; Selinski, Jennifer4; Zhang, Li-Tao1,2,5; Yang, Cheng1,2,6; Meng, Xiang-Long1,2; Gao, Hui-Yuan1,2
2017-01-09
发表期刊MOLECULAR PLANT
卷号10期号:1页码:131-142
文章类型Article
摘要The mechanism by which the mitochondrial alternative oxidase (AOX) pathway contributes to photosystem II (PSII) photoprotection is in dispute. It was generally thought that the AOX pathway protects photosystems by dissipating excess reducing equivalents exported from chloroplasts through the malate/oxaloacetate (Mal/OAA) shuttle and thus preventing the over-reduction of chloroplasts. In this study, using the aox1a Arabidopsis mutant and nine other C3 and C4 plant species, we revealed an additional action model of the AOX pathway in PSII photoprotection. Although the AOX pathway contributes to PSII photoprotection in C3 leaves treated with high light, this contribution was observed to disappear when photorespiration was suppressed. Disruption or inhibition of the AOX pathway significantly decreased the photorespiration in C3 leaves. Moreover, the AOX pathway did not respond to high light and contributed little to PSII photoprotection in C4 leaves possessing a highly active Mal/OAA shuttle but with little photorespiration. These results demonstrate that the AOX pathway contributes to PSII photoprotection in C3 plants by maintaining photorespiration to detoxify glycolate and via the indirect export of excess reducing equivalents from chloroplasts by the Mal/OAA shuttle. This new action model explains why the AOX pathway does not contribute to PSII photoprotection in C4 plants.
关键词Alternative Oxidase Photoprotection Photosystem Ii Photorespiration C3 Plant C4 Plant
DOI10.1016/j.molp.2016.10.004
收录类别SCI
语种英语
WOS记录号WOS:000396358200011
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被引频次:1[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
版本出版稿
条目标识符http://ir.qdio.ac.cn/handle/337002/136412
专题海洋生态与环境科学重点实验室
作者单位1.Shandong Agr Univ, State Key Lab Crop Biol, Tai An 271018, Shandong, Peoples R China
2.Shandong Agr Univ, Coll Life Sci, Tai An 271018, Shandong, Peoples R China
3.Shandong Agr Univ, Coll Hort Sci & Engn, Tai An 271018, Shandong, Peoples R China
4.Univ Osnabruck, Dept Plant Physiol, FB5, D-49069 Osnabruck, Germany
5.Chinese Acad Sci, Inst Oceanol, Natl & Local Joint Engn Lab Ecol Mariculture, 7 Nanhai Rd, Qingdao 266071, Peoples R China
6.Henan Acad Agr Sci, Wheat Res Inst, Zhengzhou 450002, Henan, Peoples R China
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Zhang, Zi-Shan,Liu, Mei-Jun,Scheibe, Renate,et al. Contribution of the Alternative Respiratory Pathway to PSII Photoprotection in C3 and C4 Plants[J]. MOLECULAR PLANT,2017,10(1):131-142.
APA Zhang, Zi-Shan.,Liu, Mei-Jun.,Scheibe, Renate.,Selinski, Jennifer.,Zhang, Li-Tao.,...&Gao, Hui-Yuan.(2017).Contribution of the Alternative Respiratory Pathway to PSII Photoprotection in C3 and C4 Plants.MOLECULAR PLANT,10(1),131-142.
MLA Zhang, Zi-Shan,et al."Contribution of the Alternative Respiratory Pathway to PSII Photoprotection in C3 and C4 Plants".MOLECULAR PLANT 10.1(2017):131-142.
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