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学科主题: Environmental Sciences; Toxicology
题名: The involvement of the antioxidant system in protection of desert cyanobacterium Nostoc sp against UV-B radiation and the effects of exogenous antioxidants
作者: Wang, Gaohong1; Chen, Kun1; Chen, Lanzhou1; Hu, Chunxiang1; Zhang, Delu1; Liu, Yongding1
通讯作者: Liu, YD, Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, Wuhan 430072, Peoples R China
关键词: antioxidant system ; exogenous antioxidant ; Nostoc sp. ; photosynthesis ; UV-B radiation
刊名: ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY
发表日期: 2008
DOI: 10.1016/j.ecoenv.2006.03.014
卷: 69, 期:1, 页:150-157
收录类别: SCI
文章类型: Article
部门归属: [Wang, Gaohong; Chen, Kun; Chen, Lanzhou; Hu, Chunxiang; Zhang, Delu; Liu, Yongding] Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, Wuhan 430072, Peoples R China
WOS标题词: Science & Technology ; Life Sciences & Biomedicine
类目[WOS]: Environmental Sciences ; Toxicology
研究领域[WOS]: Environmental Sciences & Ecology ; Toxicology
摘要: In this study, we found that UV-B radiation decreased photosynthetic activity and boosted lipid peroxidation of desert Nostoc sp., and exogenous chemicals (ascorbate acid (ASC), N-acetylcysteine (NAC), and sodium nitroprusside (SNP)) had obvious protective effects on photosynthesis and membranes under UV-B radiation. High-concentration SNP boosted the activities of antioxidant enzymes, but low-concentration SNP reduced the activities of antioxidant enzymes. Both NAC and ASC treatments of cells decreased activities of antioxidant enzymes. The results suggested that those chemicals possibly had different mechanisms of protection of algae cells against UV-B radiation. SNP might play double roles as a signal molecule in the formation of algae cell protection of Photosystem 11 under UV-B radiation and as a (reactive oxygen species) scavenger, while NAC and ASC might function as antioxidant reagents or precursors of other antioxidant molecules, which could protect cells directly against ROS initiated by UV-B radiation. (c) 2006 Elsevier Inc. All rights reserved.
英文摘要: In this study, we found that UV-B radiation decreased photosynthetic activity and boosted lipid peroxidation of desert Nostoc sp., and exogenous chemicals (ascorbate acid (ASC), N-acetylcysteine (NAC), and sodium nitroprusside (SNP)) had obvious protective effects on photosynthesis and membranes under UV-B radiation. High-concentration SNP boosted the activities of antioxidant enzymes, but low-concentration SNP reduced the activities of antioxidant enzymes. Both NAC and ASC treatments of cells decreased activities of antioxidant enzymes. The results suggested that those chemicals possibly had different mechanisms of protection of algae cells against UV-B radiation. SNP might play double roles as a signal molecule in the formation of algae cell protection of Photosystem 11 under UV-B radiation and as a (reactive oxygen species) scavenger, while NAC and ASC might function as antioxidant reagents or precursors of other antioxidant molecules, which could protect cells directly against ROS initiated by UV-B radiation. (c) 2006 Elsevier Inc. All rights reserved.
关键词[WOS]: ALLEVIATES OXIDATIVE DAMAGE ; ACETYL-L-CYSTEINE ; NITRIC-OXIDE ; ULTRAVIOLET-RADIATION ; ASCORBATE PEROXIDASE ; RICE LEAVES ; ANABAENA SP ; STRESS ; CHLORELLA ; RESPONSES
语种: 英语
WOS记录号: WOS:000252304800018
ISSN号: 0147-6513
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.ihb.ac.cn/handle/152342/8312
Appears in Collections:中科院水生所知识产出(2009年前)_期刊论文

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作者单位: 1.Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, Wuhan 430072, Peoples R China

Recommended Citation:
Wang, Gaohong; Chen, Kun; Chen, Lanzhou; Hu, Chunxiang; Zhang, Delu; Liu, Yongding.The involvement of the antioxidant system in protection of desert cyanobacterium Nostoc sp against UV-B radiation and the effects of exogenous antioxidants,ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY,2008,69(1):150-157
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