| Dissection of Photosynthetic Electron Transport Process in Sweet Sorghum under Heat Stress | |
Yan, Kun1,2 ; Chen, Peng1,5; Shao, Hongbo1,3,4; Shao, Chuyang2; Zhao, Shijie2; Brestic, Marian4
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| 发表期刊 | PLOS ONE
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| ISSN | 1932-6203 |
| 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 |
| 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 |
| 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. [email protected] |
| 作者部门 | 海岸带生物学与生物资源利用所重点实验室 |
| 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. |
| 文章类型 | Article |
| 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 |
| 收录类别 | SCI |
| 语种 | 英语 |
| 关键词[WOS] | FLUORESCENCE RISE OJIP ; HIGH-TEMPERATURE ; PHOTOSYSTEM-I ; HYDROGEN-PRODUCTION ; DROUGHT STRESS ; PEA LEAVES ; PLANTS ; PHOTOINHIBITION ; TOLERANCE ; DAMAGE |
| 研究领域[WOS] | Science & Technology - Other Topics |
| WOS记录号 | WOS:000319385300042 |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://ir.yic.ac.cn/handle/133337/6426 |
| 专题 | 海岸带生物学与生物资源利用重点实验室_海岸带生物学与生物资源保护实验室 |
| 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. |
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