Response of photosynthetic systems to salinity stress in the desert cyanobacterium Scytonema javanicurn

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	Response of photosynthetic systems to salinity stress in the desert cyanobacterium Scytonema javanicurn
	Hu, Jinlu 1,2,3; Jin, Liang 2; Wang, Xiaojuan 2; Cai, Wenkai 1,3; Liu, Yongding 1; Wang, Gaohong 1
刊名	ADVANCES IN SPACE RESEARCH
	2014
卷号	53 期号:1 页码:30-36
关键词	Desert cyanobacterium Salt stress Photosynthetic character JIP test Adaptation
ISSN号	0273-1177
通讯作者	Wang, GH (reprint author), Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, Wuhan 430072, Hubei, Peoples R China.
中文摘要	The present study investigated the physiological and biochemical characteristics of Scytonema javanicum, a pioneer species isolated from desert biological crusts, under salinity stress. Pigment analysis showed that salinity decreased chlorophyll a and phycocyanin content, while low salinity increased carotenoid concentration and high salinity decreased carotenoid concentration. Salinity also inhibited CO, assimilation rate and photosynthetic oxygen evolution in this cyanobacterium. Chlorophyll a fluorescence transient parameters (phi Po, phi Eo, psi O, RC/ABS, RC/CS, PIABS, and PICS) were decreased under salt stress, while dVo/dto(Mo), Vj and phi Do were increased. The decrease of ETRmax and Yield and the change of chlorophyll a fluorescence transients showed that salt stress had an important influence on photosynthesis. These results indicated that the effects of salinity stress on photosynthesis in S. javanicum may depend on the inhibition of electron transport and the inactivation of the reaction centers, but this inhibition may occur in the electron transport pathway at the PSII donor and acceptor sites. (C) 2013 COSPAR. Published by Elsevier Ltd. All rights reserved.
英文摘要	The present study investigated the physiological and biochemical characteristics of Scytonema javanicum, a pioneer species isolated from desert biological crusts, under salinity stress. Pigment analysis showed that salinity decreased chlorophyll a and phycocyanin content, while low salinity increased carotenoid concentration and high salinity decreased carotenoid concentration. Salinity also inhibited CO, assimilation rate and photosynthetic oxygen evolution in this cyanobacterium. Chlorophyll a fluorescence transient parameters (phi Po, phi Eo, psi O, RC/ABS, RC/CS, PIABS, and PICS) were decreased under salt stress, while dVo/dto(Mo), Vj and phi Do were increased. The decrease of ETRmax and Yield and the change of chlorophyll a fluorescence transients showed that salt stress had an important influence on photosynthesis. These results indicated that the effects of salinity stress on photosynthesis in S. javanicum may depend on the inhibition of electron transport and the inactivation of the reaction centers, but this inhibition may occur in the electron transport pathway at the PSII donor and acceptor sites. (C) 2013 COSPAR. Published by Elsevier Ltd. All rights reserved.
WOS标题词	Science & Technology ; Physical Sciences
类目[WOS]	Astronomy & Astrophysics ; Geosciences, Multidisciplinary ; Meteorology & Atmospheric Sciences
研究领域[WOS]	Astronomy & Astrophysics ; Geology ; Meteorology & Atmospheric Sciences
关键词[WOS]	CHLOROPHYLL-A ; GREEN-ALGA ; FLUORESCENCE MEASUREMENTS ; PHOTOSYSTEM-II ; INNER-MONGOLIA ; CRUSTS ; PLANTS ; CHINA ; ACCUMULATION ; TOLERANCE
收录类别	SCI
资助信息	Chinese Natural Science Foundation [30970688]; National Major Programs of Water Body Pollution Control and Remediation [2008ZX07105-005]; Project of Chinese Manned Spaceflight
语种	英语
WOS记录号	WOS:000330335800004
公开日期	2014-08-08
内容类型	期刊论文
源URL	[http://ir.ihb.ac.cn/handle/342005/20073]
专题	水生生物研究所_水环境工程研究中心_期刊论文
作者单位	1.Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, Wuhan 430072, Hubei, Peoples R China 2.Lanzhou Univ, Sch Pastoral Agr Sci & Technol, Lanzhou 730020, Gansu, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100039, Peoples R China
推荐引用方式 GB/T 7714	Hu, Jinlu,Jin, Liang,Wang, Xiaojuan,et al. Response of photosynthetic systems to salinity stress in the desert cyanobacterium Scytonema javanicurn[J]. ADVANCES IN SPACE RESEARCH,2014,53(1):30-36.
APA	Hu, Jinlu,Jin, Liang,Wang, Xiaojuan,Cai, Wenkai,Liu, Yongding,&Wang, Gaohong.(2014).Response of photosynthetic systems to salinity stress in the desert cyanobacterium Scytonema javanicurn.ADVANCES IN SPACE RESEARCH,53(1),30-36.
MLA	Hu, Jinlu,et al."Response of photosynthetic systems to salinity stress in the desert cyanobacterium Scytonema javanicurn".ADVANCES IN SPACE RESEARCH 53.1(2014):30-36.