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Response of photosynthetic systems to salinity stress in the desert cyanobacterium Scytonema javanicurn
Hu, Jinlu1,2,3; Jin, Liang2; Wang, Xiaojuan2; Cai, Wenkai1,3; Liu, Yongding1; Wang, Gaohong1; Wang, GH (reprint author), Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, Wuhan 430072, Hubei, Peoples R China.
2014
Source PublicationADVANCES IN SPACE RESEARCH
ISSN0273-1177
Volume53Issue:1Pages:30-36
AbstractThe 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.; 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.
SubtypeArticle
KeywordDesert Cyanobacterium Salt Stress Photosynthetic Character Jip Test Adaptation
Department[Hu, Jinlu; Cai, Wenkai; Liu, Yongding; Wang, Gaohong] Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, Wuhan 430072, Hubei, Peoples R China; [Hu, Jinlu; Jin, Liang; Wang, Xiaojuan] Lanzhou Univ, Sch Pastoral Agr Sci & Technol, Lanzhou 730020, Gansu, Peoples R China; [Hu, Jinlu; Cai, Wenkai] Univ Chinese Acad Sci, Beijing 100039, Peoples R China
DOI10.1016/j.asr.2013.10.002
WOS HeadingsScience & Technology ; Physical Sciences
Funding OrganizationChinese Natural Science Foundation [30970688]; National Major Programs of Water Body Pollution Control and Remediation [2008ZX07105-005]; Project of Chinese Manned Spaceflight ; Chinese Natural Science Foundation [30970688]; National Major Programs of Water Body Pollution Control and Remediation [2008ZX07105-005]; Project of Chinese Manned Spaceflight ; Chinese Natural Science Foundation [30970688]; National Major Programs of Water Body Pollution Control and Remediation [2008ZX07105-005]; Project of Chinese Manned Spaceflight ; Chinese Natural Science Foundation [30970688]; National Major Programs of Water Body Pollution Control and Remediation [2008ZX07105-005]; Project of Chinese Manned Spaceflight
Indexed BySCI
Language英语
WOS Research AreaAstronomy & Astrophysics ; Geology ; Meteorology & Atmospheric Sciences
WOS SubjectAstronomy & Astrophysics ; Geosciences, Multidisciplinary ; Meteorology & Atmospheric Sciences
WOS IDWOS:000330335800004
WOS KeywordCHLOROPHYLL-A ; GREEN-ALGA ; FLUORESCENCE MEASUREMENTS ; PHOTOSYSTEM-II ; INNER-MONGOLIA ; CRUSTS ; PLANTS ; CHINA ; ACCUMULATION ; TOLERANCE
Funding OrganizationChinese Natural Science Foundation [30970688]; National Major Programs of Water Body Pollution Control and Remediation [2008ZX07105-005]; Project of Chinese Manned Spaceflight ; Chinese Natural Science Foundation [30970688]; National Major Programs of Water Body Pollution Control and Remediation [2008ZX07105-005]; Project of Chinese Manned Spaceflight ; Chinese Natural Science Foundation [30970688]; National Major Programs of Water Body Pollution Control and Remediation [2008ZX07105-005]; Project of Chinese Manned Spaceflight ; Chinese Natural Science Foundation [30970688]; National Major Programs of Water Body Pollution Control and Remediation [2008ZX07105-005]; Project of Chinese Manned Spaceflight
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ihb.ac.cn/handle/342005/20073
Collection水环境工程研究中心_期刊论文
Corresponding AuthorWang, GH (reprint author), Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, Wuhan 430072, Hubei, Peoples R China.
Affiliation1.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
Recommended Citation
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, GH .(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.
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