中国科学院水生生物研究所机构知识库
Advanced  
IHB OpenIR  > 水环境工程研究中心  > 期刊论文
题名: Mutual Dependence of Nitrogen and Phosphorus as Key Nutrient Elements: One Facilitates Dolichospermum flos-aquae to Overcome the Limitations of the Other
作者: Wang, Siyang1; Xiao, Jian1; Wan, Lingling1; Zhou, Zijun1; Wang, Zhicong1; Song, Chunlei1; Zhou, Yiyong1; Cao, Xiuyun1
刊名: ENVIRONMENTAL SCIENCE & TECHNOLOGY
发表日期: 2018-05-15
DOI: 10.1021/acs.est.7b04992
卷: 52, 期:10, 页:5653-5661
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ; Technology ; Life Sciences & Biomedicine
类目[WOS]: Engineering, Environmental ; Environmental Sciences
研究领域[WOS]: Engineering ; Environmental Sciences & Ecology
英文摘要: Dolichospermum flos-aquae (formerly Anabaena flos-aquae) is a diazotrophic cyanobacterium causing harmful blooms worldwide, which is partly attributed to its capacity to compete for nitrogen (N) and phosphorus (P). Preventing the blooms by reducing P alone or both N and P has caused debate. To test the effects alone and together on the growth of cyanobacteria, we performed culture experiments in different eutrophication scenarios. N-2 fixation in terms of heterocyst density, nitrogenase activity and nif H expression increased significantly in P-replete cultures, suggesting that P enrichment facilitates N-2 fixation. Correspondingly, the expression of genes involved in P uptake, e.g., those involved in P-transport (pstS) and the hydrolysis of phosphomonoesters (phoD), was upregulated in P-deficient cultures. Interestingly, N addition enhanced not only the expression of these genes but also polyphosphate formation and alkaline phosphatase activity in P-deficient cultures relative to the P-replete cultures, as evidenced by qualitative (enzyme-labeled fluorescence) and quantitative (fluorogenic spectrophotometry) measurements. Furthermore, after N addition, cell activity and growth increased in the P-deficient cultures, underscoring the risk of N enrichment in P-limited systems. The eco-physiological responses shown here help further our understanding of the mechanism of N and P colimitation and underscore the importance of dual N and P reduction in controlling cyanobacterial blooms.
关键词[WOS]: HARMFUL CYANOBACTERIA ; LIMITING NUTRIENTS ; FRESH-WATER ; EUTROPHICATION ; MARINE ; LAKES ; PHOSPHATE ; FIXATION ; BLOOM ; BIOAVAILABILITY
语种: 英语
项目资助者: National Natural Science Foundation of China(41230748 ; State Key Laboratory of Freshwater Ecology and Biotechnology(2016FBZ07) ; 41273089 ; 41573110)
WOS记录号: WOS:000432417400016
ISSN号: 0013-936X
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.ihb.ac.cn/handle/342005/50880
Appears in Collections:水环境工程研究中心_期刊论文

Files in This Item:

There are no files associated with this item.


作者单位: 1.Univ Chinese Acad Sci, Chinese Acad Sci, State Key Lab Freshwater Ecol & Biotechnol, Key Lab Algal Biol,Inst Hydrobiol, Donghu South Rd, Wuhan 430072, Hubei, Peoples R China
Service
Recommend this item
Sava as my favorate item
Show this item's statistics
Export Endnote File
Google Scholar
Similar articles in Google Scholar
[Wang, Siyang]'s Articles
[Xiao, Jian]'s Articles
[Wan, Lingling]'s Articles
CSDL cross search
Similar articles in CSDL Cross Search
[Wang, Siyang]‘s Articles
[Xiao, Jian]‘s Articles
[Wan, Lingling]‘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
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 © 2007-2018  中国科学院水生生物研究所 - Feedback
Powered by CSpace