中国科学院水生生物研究所机构知识库
Advanced  
IHB OpenIR  > 中科院水生所知识产出(2009年前)  > 期刊论文
题名: Response of Nostoc flagelliforme to salt stress
作者: Bi Yong-Hong ; Deng Zhong-Yang ; Hu Zheng-Yu (huzy@ihb.ac.cn) ; Xu Min
通讯作者: Bi Yong-Hong ; Chinese Acad Sci, Inst Hydrobiol, Wuhan 430072, Peoples R China
刊名: Acta Hydrobiologica Sinica
发表日期: 2005
卷: 29, 期:2, 页:125-129
收录类别: 其他
英文摘要: Nostoc flagelliforme (Berk. & Curtis) Born. et Flah. is a terrestrial filamentous nitrogen-fixing cyanobacterium that is distributed in Algeria, China, France, Czech, Slovakia, Mexico, Mongolia, Morocco, Russia, Somalia and USA. It is distributed on northern and northwestern parts of China and has been used as a health food and herbal medicine by Chinese and other Asian populations over centuries. Mass culture of N. flagelliforme in an engineered system is sought but has not been available, due to the lack of understanding the resistance mechanism and growth physiology of the organism under extreme variable environments. Arid and semiarid steppe is the habitat of this alga in China and alkaline soil is the main growth substrate. It is interesting that the alga can survive and grow in such atrocious soil. This paper was conducted to study the effect of salt stress on this terrestrial alga. The modified BG11(0) culture medium containing different NaCl concentration: 0, 0.1, 0.2, 0.4, 0.8 and 1.0 mol/L, were used to culture algal mats. Algal mats were kept in BG11 8-11 h before experiment for physiological recovery. The algal physiological activity and some special substance, such as MDA, polysaccharides, carotenoid and proline, were tested after 12h treatment under 25 +/- 0.5 degrees C, 40 mu mol/m(2)/s. The results indicated that NaCl stress reduced net photosynthesis, respiration and PS II activity. When NaCl in medium is beyond 0.2mol/L, there were marked decrease in net photosynthesis, respiration and photochemical efficiency. Due to salt stress, permeability of plasma membrane, MDA contents (the production of lipid peroxidation), carotenoid content and polysaccharides content increased, free water content (FWC) and FWC/BWC (bound water content) decreased, while proline content did not change, it meant there is no significant effect of proline in this alga to response to high salt stress. It could be concluded that algal physiological activity was inhibited under salt stress, high salt concentration can lead to increase in the lipid peroxidation and ralative permeability, alter the pigments and influence algal physiological function. On the other hand, this alga also had a certain extent resistance ability to salt stress. Content of carotenoid and polysaccharides were increased to eliminate free radical and regulate osmotic pressure, respectively.
ISSN号: 1000-3207
内容类型: 期刊论文
URI标识: http://ir.ihb.ac.cn/handle/342005/18541
Appears in Collections:中科院水生所知识产出(2009年前)_期刊论文

Files in This Item: Download All
File Name/ File Size Content Type Version Access License
Response of Nostoc flagelliforme to salt stress.pdf(183KB)----开放获取--View Download

Recommended Citation:
Bi Yong-Hong; Deng Zhong-Yang; Hu Zheng-Yu (huzy@ihb.ac.cn) ; Xu Min.Response of Nostoc flagelliforme to salt stress,Acta Hydrobiologica Sinica,2005,29(2):125-129
Service
Recommend this item
Sava as my favorate item
Show this item's statistics
Export Endnote File
Google Scholar
Similar articles in Google Scholar
[Bi Yong-Hong]'s Articles
[Deng Zhong-Yang]'s Articles
[Hu Zheng-Yu (huzy@ihb.ac.cn)]'s Articles
CSDL cross search
Similar articles in CSDL Cross Search
[Bi Yong-Hong]‘s Articles
[Deng Zhong-Yang]‘s Articles
[Hu Zheng-Yu (huzy@ihb.ac.cn)]‘s Articles
Related Copyright Policies
Null
Social Bookmarking
Add to CiteULike Add to Connotea Add to Del.icio.us Add to Digg Add to Reddit
文件名: Response of Nostoc flagelliforme to salt stress.pdf
格式: Adobe PDF
所有评论 (0)
暂无评论
 
评注功能仅针对注册用户开放,请您登录
您对该条目有什么异议,请填写以下表单,管理员会尽快联系您。
内 容:
Email:  *
单位:
验证码:   刷新
您在IR的使用过程中有什么好的想法或者建议可以反馈给我们。
标 题:
 *
内 容:
Email:  *
验证码:   刷新

Items in IR are protected by copyright, with all rights reserved, unless otherwise indicated.

 

 

Valid XHTML 1.0!
Copyright © 2007-2017  中国科学院水生生物研究所 - Feedback
Powered by CSpace