干旱区生态环境知识资源中心(Arid): UV-B-induced Oxidative Damage and Protective Role of Exopolysaccharides in Desert Cyanobacterium Microcoleus vaginatus

Arid

DOI	10.1111/j.1744-7909.2008.00784.x
	UV-B-induced Oxidative Damage and Protective Role of Exopolysaccharides in Desert Cyanobacterium Microcoleus vaginatus
	Lan-Zhou Chen; Gao-Hong Wang; Song Hong; An Liu; Cheng Li; Yong-Ding Liu
来源期刊	Journal of Integrative Plant Biology
ISSN	1672-9072
出版年	2009
卷号	51 期号:2 页码:194-200
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.
英文关键词	carbohydrate metabolism desert algae extracellular polymeric substances reactive oxygen species UV tolerance
类型	Article
语种	英语
收录类别	CSCD
WOS研究方向	Plant Sciences
CSCD记录号	CSCD:3550837
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/334998
作者单位	Lan-Zhou Chen, School of Resource & Environmental Science, Wuhan University, Wuhan, Hubei 430079, China.; Song Hong, School of Resource & Environmental Science, Wuhan University, Wuhan, Hubei 430079, China.; An Liu, School of Resource & Environmental Science, Wuhan University, Wuhan, Hubei 430079, China.; Cheng Li, School of Resource & Environmental Science, Wuhan University, Wuhan, Hubei 430079, China.; Gao-Hong Wang, Institute of Hydrobiology, the Chinese Academy of Sciences, State Key Laboratory of Freshwater Ecology and Biotechnology, Wuhan, Hubei 430072, China.; Yong-Ding Liu, Institute of Hydrobiology, the Chinese Academy of Sciences, State Key Laboratory of Freshwater Ecology and Biotechnology, Wuhan, Hubei 430072, China.
推荐引用方式 GB/T 7714	Lan-Zhou Chen,Gao-Hong Wang,Song Hong,et al. UV-B-induced Oxidative Damage and Protective Role of Exopolysaccharides in Desert Cyanobacterium Microcoleus vaginatus[J],2009,51(2):194-200.
APA	Lan-Zhou Chen,Gao-Hong Wang,Song Hong,An Liu,Cheng Li,&Yong-Ding Liu.(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	Lan-Zhou Chen,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.