Ultraviolet-B exposure induces photo-oxidative damage and subsequent repair strategies in a desert cyanobacterium Microcoleus vaginatus Gom.
文献类型：期刊论文
| 作者 | Xie, Zuoming1,2; Wang, Yanxin2; Liu, Yongding1; Liu, Yongmei3 |
| 刊名 | EUROPEAN JOURNAL OF SOIL BIOLOGY
 |
| 出版日期 | 2009-07-01 |
| 卷号 | 45期号:4页码:377-382 |
| 关键词 | Antioxidant enzymes Antioxidant system Physiological characteristics Reactive oxygen species Ultraviolet-B radiation |
| ISSN号 | 1164-5563 |
| 通讯作者 | Liu, YD, Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, Wuhan 430072, Peoples R China |
| 中文摘要 | 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. |
| 英文摘要 | 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. |
| WOS标题词 | Science & Technology ; Life Sciences & Biomedicine |
| 学科主题 | Ecology; Soil Science |
| 类目[WOS] | Ecology ; Soil Science |
| 研究领域[WOS] | Environmental Sciences & Ecology ; Agriculture |
| 关键词[WOS] | OXIDATIVE STRESS ; ENVIRONMENTAL-FACTORS ; ASCORBATE PEROXIDASE ; ALGAL CRUSTS ; FREE PROLINE ; PLANTS ; RADIATION ; TERM ; PROTECTION ; MECHANISM |
| 收录类别 | SCI |
| 资助信息 | MOE Key Laboratory of Biogeology and Environmental Geology [BGEGF200817]; National Basic Research Programs of China [2003CB716801] |
| 语种 | 英语 |
| WOS记录号 | WOS:000268372700014 |
| 公开日期 | 2010-10-13 |
| 源URL | [http://ir.ihb.ac.cn/handle/152342/7642]  |
| 专题 | 水生生物研究所_中科院水生所知识产出（2009年前）_期刊论文 |
| 作者单位 | 1.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 |
| 推荐引用方式 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.(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. |
入库方式： OAI收割
来源：水生生物研究所
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