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Ultraviolet-B exposure induces photo-oxidative damage and subsequent repair strategies in a desert cyanobacterium Microcoleus vaginatus Gom.
Xie, Zuoming1,2; Wang, Yanxin2; Liu, Yongding1; Liu, Yongmei3; Liu, YD, Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, Wuhan 430072, Peoples R China
2009-07-01
Source PublicationEUROPEAN JOURNAL OF SOIL BIOLOGY
ISSN1164-5563
Volume45Issue:4Pages:377-382
AbstractBiological soil crusts are important in reversing desertification. Ultraviolet radiation, however, may be detrimental for the development of soil crusts. The cyanobacterium Microcoleus vaginatus can be a dominant species occurring in desert soil crusts all over the world. To investigate the physico-chemical consequences of ultraviolet-B radiation on M. vaginatus, eight parameters including the contents of chlorophyll a, reactive oxygen species, malondialdehyde and proline, as well as the activities of photosynthesis, superoxide dismutase (EC 1.15.1.1), peroxiclase (EC 1.11.1.7) and catalase (EC 1.11.1.6) were determined. As shown by the results of determinations, ultraviolet-B radiation caused decreases both in contents of chlorophyll a and in ratios of variable fluorescence over maximum fluorescence that indicate the growth and photosynthesis of M. vaginatus, besides, increases both in levels of reactive oxygen species and in contents of malondialdehyde and proline, while intensified activities of superoxide dismutase, peroxiclase and catalase reflecting the abilities of enzymatic preventive substances to oxidative stress of the treated cells. Therefore, ultraviolet-B radiation affects the growth of M. vaginatus and leads to oxidative stress in cells. Under ultraviolet-B radiation, the treated cells can improve their antioxidant abilities to alleviate oxidative injury. The change trends of reactive oxygen species, superoxide dismutase, peroxiclase and catalase are synchronous. These results suggest that a balance between the antioxidant system and the reactive oxygen species content may be one part of a complex stress response pathway in which multiple environmental factors including ultraviolet-B radiation affect the Survival of M. vaginatus. (C) 2009 Elsevier Masson SAS. All rights reserved.; Biological soil crusts are important in reversing desertification. Ultraviolet radiation, however, may be detrimental for the development of soil crusts. The cyanobacterium Microcoleus vaginatus can be a dominant species occurring in desert soil crusts all over the world. To investigate the physico-chemical consequences of ultraviolet-B radiation on M. vaginatus, eight parameters including the contents of chlorophyll a, reactive oxygen species, malondialdehyde and proline, as well as the activities of photosynthesis, superoxide dismutase (EC 1.15.1.1), peroxiclase (EC 1.11.1.7) and catalase (EC 1.11.1.6) were determined. As shown by the results of determinations, ultraviolet-B radiation caused decreases both in contents of chlorophyll a and in ratios of variable fluorescence over maximum fluorescence that indicate the growth and photosynthesis of M. vaginatus, besides, increases both in levels of reactive oxygen species and in contents of malondialdehyde and proline, while intensified activities of superoxide dismutase, peroxiclase and catalase reflecting the abilities of enzymatic preventive substances to oxidative stress of the treated cells. Therefore, ultraviolet-B radiation affects the growth of M. vaginatus and leads to oxidative stress in cells. Under ultraviolet-B radiation, the treated cells can improve their antioxidant abilities to alleviate oxidative injury. The change trends of reactive oxygen species, superoxide dismutase, peroxiclase and catalase are synchronous. These results suggest that a balance between the antioxidant system and the reactive oxygen species content may be one part of a complex stress response pathway in which multiple environmental factors including ultraviolet-B radiation affect the Survival of M. vaginatus. (C) 2009 Elsevier Masson SAS. All rights reserved.
SubtypeArticle
KeywordAntioxidant Enzymes Antioxidant System Physiological Characteristics Reactive Oxygen Species Ultraviolet-b Radiation
Department[Xie, Zuoming; Liu, Yongding] Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, Wuhan 430072, Peoples R China; [Xie, Zuoming; Wang, Yanxin] China Univ Geosci, MOE Key Lab Biogeol & Environm Geol, Wuhan 430074, Peoples R China; [Liu, Yongmei] Wuhan Univ, Coll Pharm, Dept Biopharmaceut Sci, Wuhan 430072, Peoples R China
Subject AreaEcology ; Soil Science
DOI10.1016/j.ejsobi.2009.04.003
WOS HeadingsScience & Technology ; Life Sciences & Biomedicine
Funding OrganizationMOE Key Laboratory of Biogeology and Environmental Geology [BGEGF200817]; National Basic Research Programs of China [2003CB716801] ; MOE Key Laboratory of Biogeology and Environmental Geology [BGEGF200817]; National Basic Research Programs of China [2003CB716801] ; MOE Key Laboratory of Biogeology and Environmental Geology [BGEGF200817]; National Basic Research Programs of China [2003CB716801] ; MOE Key Laboratory of Biogeology and Environmental Geology [BGEGF200817]; National Basic Research Programs of China [2003CB716801]
Indexed BySCI
Language英语
WOS Research AreaEnvironmental Sciences & Ecology ; Agriculture
WOS SubjectEcology ; Soil Science
WOS IDWOS:000268372700014
WOS KeywordOXIDATIVE STRESS ; ENVIRONMENTAL-FACTORS ; ASCORBATE PEROXIDASE ; ALGAL CRUSTS ; FREE PROLINE ; PLANTS ; RADIATION ; TERM ; PROTECTION ; MECHANISM
Funding OrganizationMOE Key Laboratory of Biogeology and Environmental Geology [BGEGF200817]; National Basic Research Programs of China [2003CB716801] ; MOE Key Laboratory of Biogeology and Environmental Geology [BGEGF200817]; National Basic Research Programs of China [2003CB716801] ; MOE Key Laboratory of Biogeology and Environmental Geology [BGEGF200817]; National Basic Research Programs of China [2003CB716801] ; MOE Key Laboratory of Biogeology and Environmental Geology [BGEGF200817]; National Basic Research Programs of China [2003CB716801]
Citation statistics
Cited Times:33[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ihb.ac.cn/handle/152342/7642
Collection期刊论文
Corresponding AuthorLiu, YD, Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, Wuhan 430072, Peoples R China
Affiliation1.Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, Wuhan 430072, Peoples R China
2.China Univ Geosci, MOE Key Lab Biogeol & Environm Geol, Wuhan 430074, Peoples R China
3.Wuhan Univ, Coll Pharm, Dept Biopharmaceut Sci, Wuhan 430072, Peoples R China
Recommended Citation
GB/T 7714
Xie, Zuoming,Wang, Yanxin,Liu, Yongding,et al. Ultraviolet-B exposure induces photo-oxidative damage and subsequent repair strategies in a desert cyanobacterium Microcoleus vaginatus Gom.[J]. EUROPEAN JOURNAL OF SOIL BIOLOGY,2009,45(4):377-382.
APA Xie, Zuoming,Wang, Yanxin,Liu, Yongding,Liu, Yongmei,&Liu, YD, Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, Wuhan 430072, Peoples R China.(2009).Ultraviolet-B exposure induces photo-oxidative damage and subsequent repair strategies in a desert cyanobacterium Microcoleus vaginatus Gom..EUROPEAN JOURNAL OF SOIL BIOLOGY,45(4),377-382.
MLA Xie, Zuoming,et al."Ultraviolet-B exposure induces photo-oxidative damage and subsequent repair strategies in a desert cyanobacterium Microcoleus vaginatus Gom.".EUROPEAN JOURNAL OF SOIL BIOLOGY 45.4(2009):377-382.
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