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学科主题: Biotechnology & Applied Microbiology
题名: Community shift of ammonia-oxidizing bacteria along an anthropogenic pollution gradient from the Pearl River Delta to the South China Sea
作者: Cao, HL ; Hong, YG ; Li, M ; Gu, JD
通讯作者: jdgu@hkucc.hku.hk
关键词: Ammonia monooxygenase alpha-subunit (amoA) gene ; Ammonia-oxidizing bacteria (AOB) ; South China Sea ; Anthropogenic pollution gradient
刊名: APPLIED MICROBIOLOGY AND BIOTECHNOLOGY
发表日期: 2012
卷: 94, 期:1, 页:247-259
部门归属: [Hong, Yiguo] Chinese Acad Sci, S China Sea Inst Oceanog, State Key Lab Trop Marine Environm, Guangzhou 510301, Guangdong, Peoples R China; [Cao, Huiluo; Li, Meng; Gu, Ji-Dong] Univ Hong Kong, Sch Biol Sci, Lab Environm Microbiol & Toxicol, Hong Kong, Hong Kong, Peoples R China
项目归属: LTO
摘要: The phylogenetic diversity and abundance of ammonia-oxidizing beta-proteobacteria (beta-AOB) was analyzed along an anthropogenic pollution gradient from the coastal Pearl River Delta to the South China Sea using the ammonia monooxygenase subunit A (amoA) gene. Along the gradient from coastal to the open ocean, the phylogenetic diversity of the dominant genus changed from Nitrosomonas to Nitrosospira, indicating the niche specificity by these two genera as both salinity and anthropogenic influence were major factors involved. The diversity of bacterial amoA gene was also variable along the gradient, with the highest in the deep-sea sediments, followed by the marshes sediments and the lowest in the coastal areas. Within the Nitrosomonas-related clade, four distinct lineages were identified including a putative new one (A5-16) from the different sites over the large geographical area. In the Nitrosospira-related clade, the habitat-specific lineages to the deep-sea and coastal sediments were identified. This study also provides strong support that Nitrosomonas genus, especially Nitrosomonas oligotropha lineage (6a) could be a potential bio-indicator species for pollution or freshwater/wastewater input into coastal environments. A suite of statistical analyses used showed that water depth and temperature were major factors shaping the community structure of beta-AOB in this study area.
语种: 英语
WOS记录号: WOS:000301747500025
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.scsio.ac.cn/handle/344004/10191
Appears in Collections:热带海洋环境国家重点实验室(LTO)_期刊论文

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Recommended Citation:
Cao, HL; Hong, YG; Li, M; Gu, JD.Community shift of ammonia-oxidizing bacteria along an anthropogenic pollution gradient from the Pearl River Delta to the South China Sea,APPLIED MICROBIOLOGY AND BIOTECHNOLOGY,2012,94(1):247-259
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