UV-B-induced Oxidative Damage and Protective Role of Exopolysaccharides in Desert Cyanobacterium Microcoleus vaginatus
文献类型：期刊论文
| 作者 | Chen, Lan-Zhou1; Wang, Gao-Hong2; Hong, Song1; Liu, An1; Li, Cheng1; Liu, Yong-Ding2 |
| 刊名 | JOURNAL OF INTEGRATIVE PLANT BIOLOGY
 |
| 出版日期 | 2009-02-01 |
| 卷号 | 51期号:2页码:194-200 |
| 关键词 | carbohydrate metabolism desert algae extracellular polymeric substances reactive oxygen species UV tolerance |
| ISSN号 | 1672-9072 |
| 通讯作者 | Hong, S, Wuhan Univ, Sch Resource & Environm Sci, Wuhan 430079, Peoples R China |
| 中文摘要 | UV-B-induced oxidative damage and the protective effect of exopolysaccharides (EPS) in Microcoleus vaginatus, a cyanobacterium isolated from desert crust, were investigated. After being irradiated with UV-B radiation, photosynthetic activity (Fv/Fm), cellular total carbohydrates, EPS and sucrose production of irradiated cells decreased, while reducing sugars, reactive oxygen species (ROS) generation, malondialdehyde (MDA) production and DNA strand breaks increased significantly. However, when pretreated with 100 mg/L exogenous EPS, EPS production in the culture medium of UV-B stressed cells decreased significantly; Fv/Fm, cellular total carbohydrates, reducing sugars and sucrose synthase (SS) activity of irradiated cells increased significantly, while ROS generation, MDA production and DNA strand breaks of irradiated cells decreased significantly. The results suggested that EPS exhibited a significant protective effect on DNA strand breaks and lipid peroxidation by effectively eliminating ROS induced by UV-B radiation in M. vaginatus. |
| 英文摘要 | UV-B-induced oxidative damage and the protective effect of exopolysaccharides (EPS) in Microcoleus vaginatus, a cyanobacterium isolated from desert crust, were investigated. After being irradiated with UV-B radiation, photosynthetic activity (Fv/Fm), cellular total carbohydrates, EPS and sucrose production of irradiated cells decreased, while reducing sugars, reactive oxygen species (ROS) generation, malondialdehyde (MDA) production and DNA strand breaks increased significantly. However, when pretreated with 100 mg/L exogenous EPS, EPS production in the culture medium of UV-B stressed cells decreased significantly; Fv/Fm, cellular total carbohydrates, reducing sugars and sucrose synthase (SS) activity of irradiated cells increased significantly, while ROS generation, MDA production and DNA strand breaks of irradiated cells decreased significantly. The results suggested that EPS exhibited a significant protective effect on DNA strand breaks and lipid peroxidation by effectively eliminating ROS induced by UV-B radiation in M. vaginatus. |
| WOS标题词 | Science & Technology ; Life Sciences & Biomedicine |
| 学科主题 | Biochemistry & Molecular Biology; Plant Sciences |
| 类目[WOS] | Biochemistry & Molecular Biology ; Plant Sciences |
| 研究领域[WOS] | Biochemistry & Molecular Biology ; Plant Sciences |
| 关键词[WOS] | EXTRACELLULAR CARBOHYDRATE POLYMERS ; NOSTOC COMMUNE ; ANABAENA SP ; SOIL ALGAE ; STRESS ; POLYSACCHARIDES ; STABILIZATION ; DESICCATION ; INVOLVEMENT ; TOLERANCE |
| 收录类别 | SCI |
| 资助信息 | National Natural Science Foundation of China [30500068, 30570343]; National Hi-Tech Research and Development Program of China [2005AA601010-02-2]; Water Environment Research & Data Sharing Platform in the Middle Reaches of the Yangtze River [WERDSPMYR-0605] |
| 语种 | 英语 |
| WOS记录号 | WOS:000262643200010 |
| 公开日期 | 2010-10-13 |
| 源URL | [http://ir.ihb.ac.cn/handle/152342/7910]  |
| 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.Wuhan Univ, Sch Resource & Environm Sci, Wuhan 430079, Peoples R China 2.Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, Wuhan 430072, Peoples R China |
| 推荐引用方式 GB/T 7714 | Chen, Lan-Zhou,Wang, Gao-Hong,Hong, Song,et al. UV-B-induced Oxidative Damage and Protective Role of Exopolysaccharides in Desert Cyanobacterium Microcoleus vaginatus[J]. JOURNAL OF INTEGRATIVE PLANT BIOLOGY,2009,51(2):194-200. |
| APA | Chen, Lan-Zhou,Wang, Gao-Hong,Hong, Song,Liu, An,Li, Cheng,&Liu, Yong-Ding.(2009).UV-B-induced Oxidative Damage and Protective Role of Exopolysaccharides in Desert Cyanobacterium Microcoleus vaginatus.JOURNAL OF INTEGRATIVE PLANT BIOLOGY,51(2),194-200. |
| MLA | Chen, Lan-Zhou,et al."UV-B-induced Oxidative Damage and Protective Role of Exopolysaccharides in Desert Cyanobacterium Microcoleus vaginatus".JOURNAL OF INTEGRATIVE PLANT BIOLOGY 51.2(2009):194-200. |
入库方式： OAI收割
来源：水生生物研究所
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