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题名: VARIATION IN COMMUNITY COMPOSITION OF NirS-TYPE DENITRIFIERS IN SEDIMENT OF ASINS WITH DIFFERENT TROPHIC STATES WITHIN A SHALLOW LAKE
作者: Zhang, Yao1, 2; Liu, Yuqian1, 2; Zhou, Zijun1, 2; Wang, Siyang1, 2; Cao, Xiuyun1; Song, Chunlei1; Zhou, Yiyong1
关键词: denitrification ; nirS ; sediment ; alternative stable state ; shallow lakes
刊名: FRESENIUS ENVIRONMENTAL BULLETIN
发表日期: 2016
卷: 25, 期:12, 页:5120-5129
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ; Life Sciences & Biomedicine
类目[WOS]: Environmental Sciences
研究领域[WOS]: Environmental Sciences & Ecology
英文摘要: Denitrification is of great concern as part of the global nitrogen cycle leading to nitrogen loss from lake. However key factors controlling this process still remain unclear. A shallow Chinese lake (Lake QingLing) is divided into aquaculture zone (QLN) and natural zone covered by macrophytes (QLS), providing an ideal model to identify environment factors, rather than geographical and hydrological ones, affecting community structure of denitrifiers. Targeting the nirS gene and using the terminal restriction fragment length polymorphism (T-RFLP) analysis and cloning composition structure of denitrifiers were studied in sediment of Lake QingLing. Trophic states were largely different between the two basins. In parallel, a few unique T-RFs appeared in QLN. Furthermore, most sequences were grouped into Proteobacteria, majority genes from QLN were found to be prevalent in Alphaproteobacteria and Gammaproteobacteria while most sequences from QLS were in Betaproteobacteria and Gammaproteobacteria. Canonical correspondence analysis (CCA) indicated that organic matter (OM) in sediment, NH4+ and pH value in pore water were important environmental factors shaping these communities.
关键词[WOS]: REDUCTASE GENES NIRK ; ORGANIC-MATTER ; BACTERIAL COMMUNITIES ; CREATED WETLANDS ; MARINE SEDIMENT ; DIVERSITY ; NITROGEN ; PLANT ; SOIL ; RESPONSES
语种: 英语
项目资助者: National Natural Science Foundation of China(41230748 ; State Key Laboratory of Freshwater Ecology and Biotechnology(2014FBZ01) ; 41173081 ; 41273089)
WOS记录号: WOS:000391345600005
ISSN号: 1018-4619
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内容类型: 期刊论文
URI标识: http://ir.ihb.ac.cn/handle/342005/28781
Appears in Collections:水环境工程研究中心_期刊论文

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作者单位: 1.Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, 7 Donghu South Rd, Wuhan, Hubei, Peoples R China
2.Univ Chinese Acad Sci, 19 Yuquan Rd, Beijing 100039, Peoples R China
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