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学科主题: Biology ; Environmental Sciences ; Geosciences, Multidisciplinary
题名: Diversity, abundance, and distribution of NO-forming nitrite reductase-encoding genes in deep-sea subsurface sediments of the South China Sea
作者: [Li, M. ; Cao, H. ; Gu, J. -D.] Univ Hong Kong, Sch Biol Sci, Lab Environm Microbiol & Toxicol, Hong Kong, Hong Kong, Peoples R China ; [Hong, Y.] Chinese Acad Sci, S China Sea Inst Oceanol, State Key Lab Trop Oceanog LTO, Guangzhou, Guangdong, Peoples R China ; [Klotz, M. G.] Univ N Carolina, Dept Biol, Charlotte, NC 28223 USA ; [Gu, J. -D.] Univ Hong Kong, Swire Inst Marine Sci, Hong Kong, Hong Kong, Peoples R China
通讯作者: jdgu@hkucc.hku.hk
刊名: GEOBIOLOGY
发表日期: 2013
卷: 11, 期:2, 页:170-179
部门归属: LTO
资助者: This research was supported by a PhD studentship (ML) and Environmental and Conservation Fund (No. 15/2011) (J-DG), National Natural Science Foundation of China (41076095, 30800032) (Y-GH), and South China Sea Open Cruise by R/V Shiyan 3, South China Sea Institute of Oceanology, CAS. We thank two anonymous reviewers for their valuable comments and suggestions to improve this manuscript from an earlier draft and Jessie Lai for general laboratory support for conducting this study at The University of Hong Kong. All authors of this manuscript have no conflict of interest to declare.
摘要: In marine ecosystems, both nitrite-reducing bacteria and anaerobic ammonium-oxidizing (anammox) bacteria, containing different types of NO-forming nitrite reductaseencoding genes, contribute to the nitrogen cycle. The objectives of study were to reveal the diversity, abundance, and distribution of NO-forming nitrite reductaseencoding genes in deep-sea subsurface environments. Results showed that higher diversity and abundance of nirS gene than nirK and Scalindua-nirS genes were evident in the sediments of the South China Sea (SCS), indicating bacteria containing nirS gene dominated the NO-forming nitrite-reducing microbial community in this ecosystem. Similar diversity and abundance distribution patterns of both nirS and Scalindua-nirS genes were detected in this study sites, but different from nirK gene. Further statistical analyses also showed both nirS and Scalindua-nirS genes respond similarly to environmental factors, but differed from nirK gene. These results suggest that bacteria containing nirS and Scalindua-nirS genes share similar niche in deep-sea subsurface sediments of the SCS, but differed from those containing nirK gene, indicating that community structures of nitrite-reducing bacteria are segregated by the functional modules (NirS vs. NirK) rather than the competing processes (anammox vs. classical denitrification).
语种: 英语
原文出处: 查看原文
WOS记录号: WOS:000314971400005
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.scsio.ac.cn/handle/344004/10931
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[Li, M.; Cao, H.; Gu, J. -D.] Univ Hong Kong, Sch Biol Sci, Lab Environm Microbiol & Toxicol, Hong Kong, Hong Kong, Peoples R China; [Hong, Y.] Chinese Acad Sci, S China Sea Inst Oceanol, State Key Lab Trop Oceanog LTO, Guangzhou, Guangdong, Peoples R China; [Klotz, M. G.] Univ N Carolina, Dept Biol, Charlotte, NC 28223 USA; [Gu, J. -D.] Univ Hong Kong, Swire Inst Marine Sci, Hong Kong, Hong Kong, Peoples R China.Diversity, abundance, and distribution of NO-forming nitrite reductase-encoding genes in deep-sea subsurface sediments of the South China Sea,GEOBIOLOGY,2013,11(2):170-179
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