Dissection of Photosynthetic Electron Transport Process in Sweet Sorghum under Heat Stress

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	Dissection of Photosynthetic Electron Transport Process in Sweet Sorghum under Heat Stress
	Yan, Kun1,2 ; Chen, Peng 1,5; Shao, Hongbo 1,3,4; Shao, Chuyang 2; Zhao, Shijie 2; Brestic, Marian 4
刊名	PLOS ONE
	2013-05-24
卷号	8 期号:5 页码:e62100
关键词	Fluorescence Rise Ojip High-temperature Photosystem-i Hydrogen-production Drought Stress Pea Leaves Plants Photoinhibition Tolerance Damage
ISSN号	1932-6203
通讯作者	Shao, HB (reprint author), Chinese Acad Sci, Yantai Inst Coastal Zone Res YIC, Key Lab Coastal Biol & Bioresources Utilizat, Yantai, Peoples R China. shaohongbochu@126.com
产权排序	[Yan, Kun; Chen, Peng; Shao, Hongbo] Chinese Acad Sci, Yantai Inst Coastal Zone Res YIC, Key Lab Coastal Biol & Bioresources Utilizat, Yantai, Peoples R China; [Yan, Kun; Shao, Chuyang; Zhao, Shijie] Shandong Agr Univ, State Key Lab Crop Biol, Tai An, Shandong, Peoples R China; [Shao, Hongbo] Qingdao Univ Sci & Technol, Inst Life Sci, Qingdao, Peoples R China; [Shao, Hongbo; Brestic, Marian] Slovak Univ Agr, Dept Plant Physiol, Nitra, Slovakia; [Chen, Peng] Chinese Acad Sci, Grad Univ, Beijing, Peoples R China
文献子类	Article
英文摘要	Plant photosynthesis and photosystem II (PSII) are susceptible to high temperature. However, photosynthetic electron transport process under heat stress remains unclear. To reveal this issue, chlorophyll a fluorescence and modulated 820 nm reflection were simultaneously detected in sweet sorghum. At 43 degrees C, J step in the chlorophyll a fluorescence transient was significantly elevated, suggesting that electron transport beyond primary quinone of PSII (Q(A)) (primary quinone electron acceptor of PSII) was inhibited. PSI (Photosystem I) photochemical capacity was not influenced even under severe heat stress at 48 degrees C. Thus, PSI oxidation was prolonged and PSI re-reduction did not reach normal level. The inhibition of electron transport between PSII and PSI can reduce the possibility of PSI photoinhibition under heat stress. PSII function recovered entirely one day after heat stress at 43 degrees C, implying that sweet sorghum has certain self-remediation capacity. When the temperature reached 48 degrees C, the maximum quantum yield for primary photochemistry and the electron transport from PSII donor side were remarkably decreased, which greatly limited the electron flow to PSI, and PSI re-reduction suspended. The efficiency of an electron transferred from the intersystem electron carrier (plastoquinol, PQH(2)) to the end electron acceptors at the PSI acceptor side increased significantly at 48 degrees C, and the reason was the greater inhibition of electron transport before PQH(2). Thus, the fragment from Q(A) to PQH(2) is the most heat sensitive in the electron transport chain between PSII and PSI in sweet sorghum.
学科主题	Multidisciplinary Sciences
URL标识	查看原文
WOS关键词	FLUORESCENCE RISE OJIP ; HIGH-TEMPERATURE ; PHOTOSYSTEM-I ; HYDROGEN-PRODUCTION ; DROUGHT STRESS ; PEA LEAVES ; PLANTS ; PHOTOINHIBITION ; TOLERANCE ; DAMAGE
WOS研究方向	Science & Technology - Other Topics
语种	英语
WOS记录号	WOS:000319385300042
资助机构	National Natural Science Foundation of China [41201292, 41171216]; One Hundred-Talent Plan of Chinese Academy of Sciences (CAS); Opening Foundation of the State Key Lab of Crop Biology, Shandong Agriculture University [2011KF02]; Chinese Academy of Sciences (CAS) [2012T1Z0010]; Science & Technology Development Plan of Shandong Province [2010GSF10208]; Science & Technology Development Plan of Yantai City [2011016]; CAS/SAFEA International Partnership Program for Creative Research Teams; Chinese Academy of Sciences [XDA01020304]; Yantai Double-Hundred High-end Talent Plan [XY-003-02]; 135 Development Plan of YIC-CAS
公开日期	2013-08-14
内容类型	期刊论文
源URL	[http://ir.yic.ac.cn/handle/133337/6427]
专题	烟台海岸带研究所_海岸带生物学与生物资源利用所重点实验室
作者单位	1.Chinese Acad Sci, Yantai Inst Coastal Zone Res YIC, Key Lab Coastal Biol & Bioresources Utilizat, Yantai, Peoples R China 2.Shandong Agr Univ, State Key Lab Crop Biol, Tai An, Shandong, Peoples R China 3.Qingdao Univ Sci & Technol, Inst Life Sci, Qingdao, Peoples R China 4.Slovak Univ Agr, Dept Plant Physiol, Nitra, Slovakia 5.Chinese Acad Sci, Grad Univ, Beijing, Peoples R China
推荐引用方式 GB/T 7714	Yan, Kun,Chen, Peng,Shao, Hongbo,et al. Dissection of Photosynthetic Electron Transport Process in Sweet Sorghum under Heat Stress[J]. PLOS ONE,2013,8(5):e62100.
APA	Yan, Kun,Chen, Peng,Shao, Hongbo,Shao, Chuyang,Zhao, Shijie,&Brestic, Marian.(2013).Dissection of Photosynthetic Electron Transport Process in Sweet Sorghum under Heat Stress.PLOS ONE,8(5),e62100.
MLA	Yan, Kun,et al."Dissection of Photosynthetic Electron Transport Process in Sweet Sorghum under Heat Stress".PLOS ONE 8.5(2013):e62100.