| Photosynthetic proton and electron transport in wheat leaves under prolonged moderate drought stress | |
| Zivcak, Marek1; Kalaji, Hazem M.2; Shao, Hong-Bo3,4; Olsovska, Katarina1; Brestic, Marian1; Brestic, M (reprint author), Slovak Univ Agr, Dept Plant Physiol, Tr A Hlinku 2, Nitra 94976, Slovakia. [email protected]; [email protected]; [email protected]; [email protected]; [email protected] | |
| 发表期刊 | JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY
 |
| ISSN | 1011-1344 |
| 2014-08-01 | |
| 卷号 | 137期号:SI页码:107-115 |
| 关键词 | Photosynthesis Electron Transport Proton Transport Electrochromic Bandshift Cyclic Electron Transport Chlorophyll Fluorescence |
| DOI | 10.1016/j.jphotobiol.2014.01.007 |
| 产权排序 | [Zivcak, Marek; Olsovska, Katarina; Brestic, Marian] Slovak Univ Agr, Dept Plant Physiol, Nitra 94976, Slovakia; [Kalaji, Hazem M.] Warsaw Agr Univ SGGW, Fac Agr & Biol, Dept Plant Physiol, PL-02776 Warsaw, Poland; [Shao, Hong-Bo] Chinese Acad Sci, Yantai Inst Coastal Zone Res YIC, Key Lab Coastal Biol & Bioresources Utilizat, Yantai 264003, Peoples R China; [Shao, Hong-Bo] Qingdao Univ Sci & Technol, Inst Life Sci, Qingdao 266042, Peoples R China |
| 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 | In conditions of long-lasting moderate drought stress, we have studied the photoprotective responses in leaves of wheat (Triticum aestivum L., cv. Katya) related to the photosynthetic electron and proton transport. The dark-interval relaxation kinetics of electrochromic bandshift (ECS) indicated a decrease of electric and an increase of osmotic component of the proton motive force in drought stressed leaves, but neither the total proton motive force (pmf) nor the thylakoid proton conductance (gH(+)) were affected. We observed the enhanced protection against overreduction of PSI acceptor side in leaves of drought stressed plants. This was obviously achieved by the rapid buildup of transthylakoid pH gradient at relatively low light intensities, directly associated to the steep increase of NPQ and the down-regulation of linear electron transport. It was further accompanied by the steep increase of redox poise at PSII acceptor side and PSI donor side. The early responses related to thylakoid lumen acidification in drought-stressed leaves could be associated with the activity of an enhanced fraction of PSI not involved in linear electron flow, which may have led to enhanced cyclic electron pathway even in relatively low light intensities, as well as to the drought-induced decrease of IP-amplitude in fast chlorophyll fluorescence kinetics. (C) 2014 Elsevier B.V. All rights reserved.; In conditions of long-lasting moderate drought stress, we have studied the photoprotective responses in leaves of wheat (Triticum aestivum L., cv. Katya) related to the photosynthetic electron and proton transport. The dark-interval relaxation kinetics of electrochromic bandshift (ECS) indicated a decrease of electric and an increase of osmotic component of the proton motive force in drought stressed leaves, but neither the total proton motive force (pmf) nor the thylakoid proton conductance (gH(+)) were affected. We observed the enhanced protection against overreduction of PSI acceptor side in leaves of drought stressed plants. This was obviously achieved by the rapid buildup of transthylakoid pH gradient at relatively low light intensities, directly associated to the steep increase of NPQ and the down-regulation of linear electron transport. It was further accompanied by the steep increase of redox poise at PSII acceptor side and PSI donor side. The early responses related to thylakoid lumen acidification in drought-stressed leaves could be associated with the activity of an enhanced fraction of PSI not involved in linear electron flow, which may have led to enhanced cyclic electron pathway even in relatively low light intensities, as well as to the drought-induced decrease of IP-amplitude in fast chlorophyll fluorescence kinetics. (C) 2014 Elsevier B.V. All rights reserved. |
| 文章类型 | Article |
| 资助机构 | Biochemistry & Molecular Biology ; Biophysics |
| 收录类别 | SCI |
| 语种 | 英语 |
| 关键词[WOS] | A FLUORESCENCE INDUCTION ; PHOTOSYSTEM-I CONTENT ; TRITICUM-AESTIVUM L ; WATER-WATER CYCLE ; HIGHER-PLANTS ; CHLOROPHYLL FLUORESCENCE ; ARABIDOPSIS-THALIANA ; PROGRESSIVE DROUGHT ; ENERGY-DISSIPATION ; LIGHT REACTIONS |
| 研究领域[WOS] | Biochemistry & Molecular Biology ; Biophysics |
| WOS记录号 | WOS:000340334300014 |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://ir.yic.ac.cn/handle/133337/8539 |
| 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 |
| 通讯作者 | Brestic, M (reprint author), Slovak Univ Agr, Dept Plant Physiol, Tr A Hlinku 2, Nitra 94976, Slovakia. [email protected]; [email protected]; [email protected]; [email protected]; [email protected] |
| 作者单位 | 1.Slovak Univ Agr, Dept Plant Physiol, Nitra 94976, Slovakia 2.Warsaw Agr Univ SGGW, Fac Agr & Biol, Dept Plant Physiol, PL-02776 Warsaw, Poland 3.Chinese Acad Sci, Yantai Inst Coastal Zone Res YIC, Key Lab Coastal Biol & Bioresources Utilizat, Yantai 264003, Peoples R China 4.Qingdao Univ Sci & Technol, Inst Life Sci, Qingdao 266042, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zivcak, Marek,Kalaji, Hazem M.,Shao, Hong-Bo,et al. Photosynthetic proton and electron transport in wheat leaves under prolonged moderate drought stress[J]. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY,2014,137(SI):107-115. |
| APA | Zivcak, Marek.,Kalaji, Hazem M..,Shao, Hong-Bo.,Olsovska, Katarina.,Brestic, Marian.,[email protected].(2014).Photosynthetic proton and electron transport in wheat leaves under prolonged moderate drought stress.JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY,137(SI),107-115. |
| MLA | Zivcak, Marek,et al."Photosynthetic proton and electron transport in wheat leaves under prolonged moderate drought stress".JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY 137.SI(2014):107-115. |
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