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Physiological and biochemical responses of Scytonema javanicum (cyanobacterium) to salt stress
Tang, D.; Shi, S.; Li, D.; Hu, C.; Liu, Y.; Liu, Y, Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, Wuhan 430072, Peoples R China
2007-11-01
Source PublicationJOURNAL OF ARID ENVIRONMENTS
ISSN0140-1963
Volume71Issue:3Pages:312-322
AbstractScytonema javanicum (Kutz.) Born et Flah (cyanobacterium) is one of the species distributed widely in the crust of desert soils regularly subjected to severe water stress. To investigate the response of the species to salt stress, many physiological and biochemical parameters, including growth rate, ratio of variable fluorescence to maximum fluorescence (Fv/Fm), reactive oxidative species (ROS), malondialdehyde (MDA), catalase (CAT), and superoxide dismutase (SOD), were determined in culture. The results showed that 50 mM NaCl inhibited growth and Fv/Fm in the medium BG-110, and that the inhibition was maximum after 1-2 days' exposure to salt stress; 50 mM NaCl also increased the contents of ROS and MDA in treated cells, which suggests that salt stress may lead to oxidative damage and lipid peroxidation in the alga. Further, changes in the antioxidative enzymes SOD and CAT in the treated alga were consistent with changes in ROS and MDA at certain extent. These observations suggest that oxidative stress resulting from salt stress in S. javanicum could result in the production of antioxidative enzymes to counteract the oxidative damage, and the enzymes may contribute to the ability of S. javanicum to survive the adverse desert environment. (c) 2007 Elsevier Ltd. All rights reserved.; Scytonema javanicum (Kutz.) Born et Flah (cyanobacterium) is one of the species distributed widely in the crust of desert soils regularly subjected to severe water stress. To investigate the response of the species to salt stress, many physiological and biochemical parameters, including growth rate, ratio of variable fluorescence to maximum fluorescence (Fv/Fm), reactive oxidative species (ROS), malondialdehyde (MDA), catalase (CAT), and superoxide dismutase (SOD), were determined in culture. The results showed that 50 mM NaCl inhibited growth and Fv/Fm in the medium BG-110, and that the inhibition was maximum after 1-2 days' exposure to salt stress; 50 mM NaCl also increased the contents of ROS and MDA in treated cells, which suggests that salt stress may lead to oxidative damage and lipid peroxidation in the alga. Further, changes in the antioxidative enzymes SOD and CAT in the treated alga were consistent with changes in ROS and MDA at certain extent. These observations suggest that oxidative stress resulting from salt stress in S. javanicum could result in the production of antioxidative enzymes to counteract the oxidative damage, and the enzymes may contribute to the ability of S. javanicum to survive the adverse desert environment. (c) 2007 Elsevier Ltd. All rights reserved.
SubtypeArticle
KeywordAntioxidative Enzymes Lipid Peroxidation Oxidative Damage Photosynthetic Efficiency Salt Stress Scytonema Javanicum
DepartmentChinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, Wuhan 430072, Peoples R China; Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China
Subject AreaEcology ; Environmental Sciences
DOI10.1016/j.jaridenv.2007.05.004
WOS HeadingsScience & Technology ; Life Sciences & Biomedicine
Indexed BySCI
Language英语
WOS Research AreaEnvironmental Sciences & Ecology
WOS SubjectEcology ; Environmental Sciences
WOS IDWOS:000249611000004
WOS KeywordSUPEROXIDE-DISMUTASE ; GLUTATHIONE-REDUCTASE ; ACTIVE OXYGEN ; ANABAENA SP ; PHOTOSYNTHESIS ; TOLERANCE ; PLANTS ; DAMAGE ; PHOTOINHIBITION ; PEROXIDASE
Citation statistics
Cited Times:46[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ihb.ac.cn/handle/152342/8422
Collection期刊论文
Corresponding AuthorLiu, Y, 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.Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China
Recommended Citation
GB/T 7714
Tang, D.,Shi, S.,Li, D.,et al. Physiological and biochemical responses of Scytonema javanicum (cyanobacterium) to salt stress[J]. JOURNAL OF ARID ENVIRONMENTS,2007,71(3):312-322.
APA Tang, D.,Shi, S.,Li, D.,Hu, C.,Liu, Y.,&Liu, Y, Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, Wuhan 430072, Peoples R China.(2007).Physiological and biochemical responses of Scytonema javanicum (cyanobacterium) to salt stress.JOURNAL OF ARID ENVIRONMENTS,71(3),312-322.
MLA Tang, D.,et al."Physiological and biochemical responses of Scytonema javanicum (cyanobacterium) to salt stress".JOURNAL OF ARID ENVIRONMENTS 71.3(2007):312-322.
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