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题名: Shifts between ammonia-oxidizing bacteria and archaea in relation to nitrification potential across trophic gradients in two large Chinese lakes (Lake Taihu and Lake Chaohu)
作者: Hou, Jie1, 2; Song, Chunlei1; Cao, Xiuyun1; Zhou, Yiyong1
通讯作者: Zhou, YY (reprint author), Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, Wuhan, Hubei, Peoples R China.
关键词: Eutrophic lakes ; Nitrogen removal ; Trophic state ; Ammonia-oxidizing bacteria ; Ammonia-oxidizing archaea ; qPCR
刊名: WATER RESEARCH
发表日期: 2013-05-01
DOI: 10.1016/j.watres.2013.01.042
卷: 47, 期:7, 页:2285-2296
收录类别: SCI
文章类型: Article
部门归属: [Hou, Jie ; Song, Chunlei ; Cao, Xiuyun ; Zhou, Yiyong] Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, Wuhan, Hubei, Peoples R China ; [Hou, Jie] Chinese Acad Sci, Grad Sch, Beijing, Peoples R China
WOS标题词: Science & Technology ; Technology ; Life Sciences & Biomedicine ; Physical Sciences
资助者: National Key Basic Research and Development Program [2008CB418006]; National Science Foundation of China [41073066, 40903030, 41173081]; State Key Laboratory of Freshwater Ecology and Biotechnology [2011FBZ15]
类目[WOS]: Engineering, Environmental ; Environmental Sciences ; Water Resources
研究领域[WOS]: Engineering ; Environmental Sciences & Ecology ; Water Resources
摘要: Ammonia oxidation plays a pivotal role in the cycling and removal of nitrogen in aquatic ecosystems. Recent findings have expanded the known ammonia-oxidizing prokaryotes from Bacteria to Archaea. However, the relative importance of ammonia-oxidizing bacteria (AOB) and ammonia-oxidizing archaea (AOA) in nitrification is still debated. Here we showed that, in two large eutrophic lakes in China (Lake Taihu and Lake Chaohu), the abundance of AOA and AOB varied in opposite patterns according to the trophic state, although both AOA and AOB were abundant. In detail, from mesotrophic to eutrophic sites, the AOA abundance decreased, while the AOB increased in abundance and outnumbered the AOA at hypertrophic sites. In parallel, the nitrification rate increased along these trophic gradients and was significantly correlated with both the AOB abundance and the numerical ratio of AOB to AOA. Phylogenetic analysis of bacterial amoA sequences showed that Nitrosomonas oligotropha- and Nitrosospira-affiliated AOB dominated in both lakes, while Nitrosomonas communis-related AOB were only detected at the eutrophic sites. The diversity of AOB increased from mesotrophic to eutrophic sites and was positively correlated with the nitrification rate. Overall, this study enhances our understanding of the ecology of ammonia-oxidizing prokaryotes by elucidating conditions that AOB may numerically predominated over AOA, and indicated that AOA may play a less important role than AOB in the nitrification process of eutrophic lakes. (C) 2013 Elsevier Ltd. All rights reserved.
英文摘要: Ammonia oxidation plays a pivotal role in the cycling and removal of nitrogen in aquatic ecosystems. Recent findings have expanded the known ammonia-oxidizing prokaryotes from Bacteria to Archaea. However, the relative importance of ammonia-oxidizing bacteria (AOB) and ammonia-oxidizing archaea (AOA) in nitrification is still debated. Here we showed that, in two large eutrophic lakes in China (Lake Taihu and Lake Chaohu), the abundance of AOA and AOB varied in opposite patterns according to the trophic state, although both AOA and AOB were abundant. In detail, from mesotrophic to eutrophic sites, the AOA abundance decreased, while the AOB increased in abundance and outnumbered the AOA at hypertrophic sites. In parallel, the nitrification rate increased along these trophic gradients and was significantly correlated with both the AOB abundance and the numerical ratio of AOB to AOA. Phylogenetic analysis of bacterial amoA sequences showed that Nitrosomonas oligotropha- and Nitrosospira-affiliated AOB dominated in both lakes, while Nitrosomonas communis-related AOB were only detected at the eutrophic sites. The diversity of AOB increased from mesotrophic to eutrophic sites and was positively correlated with the nitrification rate. Overall, this study enhances our understanding of the ecology of ammonia-oxidizing prokaryotes by elucidating conditions that AOB may numerically predominated over AOA, and indicated that AOA may play a less important role than AOB in the nitrification process of eutrophic lakes. (C) 2013 Elsevier Ltd. All rights reserved.
关键词[WOS]: COMMUNITY STRUCTURE ; IMPORTANT PLAYERS ; NITROGEN-CYCLE ; ABUNDANCE ; DIVERSITY ; SOIL ; EUTROPHICATION ; OXIDATION ; ECOLOGY ; SHALLOW
语种: 英语
项目资助者: National Key Basic Research and Development Program(2008CB418006) ; National Science Foundation of China(41073066 ; State Key Laboratory of Freshwater Ecology and Biotechnology(2011FBZ15) ; 40903030 ; 41173081)
WOS记录号: WOS:000317699900017
ISSN号: 0043-1354
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.ihb.ac.cn/handle/342005/19324
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, Wuhan, Hubei, Peoples R China
2.Chinese Acad Sci, Grad Sch, Beijing, Peoples R China

Recommended Citation:
Hou, J; Song, CL; Cao, XY; Zhou, YY.Shifts between ammonia-oxidizing bacteria and archaea in relation to nitrification potential across trophic gradients in two large Chinese lakes (Lake Taihu and Lake Chaohu),WATER RESEARCH,2013,47(7):2285-2296
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