Photosynthetic proton and electron transport in wheat leaves under prolonged moderate drought stress

CORC > 烟台海岸带研究所 > 中国科学院烟台海岸带研究所 > 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利用所重点实验室

	Photosynthetic proton and electron transport in wheat leaves under prolonged moderate drought stress
	Zivcak, Marek 1; Kalaji, Hazem M.2; Shao, Hong-Bo 3,4; Olsovska, Katarina 1; Brestic, Marian 1
刊名	JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY
	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
ISSN号	1011-1344
通讯作者	Brestic, M (reprint author), Slovak Univ Agr, Dept Plant Physiol, Tr A Hlinku 2, Nitra 94976, Slovakia. marek.zivcak@uniag.sk ; hazem@kalaji.pl ; shaohongbochu@126.com ; katarina.olsovska@uniag.sk ; marian.brestic@uniag.sk
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
中文摘要	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.
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.
学科主题	Biochemistry & Molecular Biology; Biophysics
研究领域[WOS]	Biochemistry & Molecular Biology ; Biophysics
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
收录类别	SCI
语种	英语
WOS记录号	WOS:000340334300014
内容类型	期刊论文
源URL	[http://ir.yic.ac.cn/handle/133337/8539]
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.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.(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.