DOI: 10.1016/j.marpolbul.2017.09.062
Scopus记录号: 2-s2.0-85045168149
论文题名: Overall bacterial community composition and abundance of nitrifiers and denitrifiers in a typical macrotidal estuary
作者: Zhu W. ; Wang C. ; Sun F. ; Zhao L. ; Dou W. ; Mao Z. ; Wu W.
刊名: Marine Pollution Bulletin
ISSN: 0025-326X
EISSN: 1879-3363
出版年: 2018
卷: 126 起始页码: 540
结束页码: 548
语种: 英语
英文关键词: AOB amoA
; Bacterial communities
; Estuary
; nirS
; Nitrogen
; Sediment
Scopus关键词: Ammonia
; Bacteria
; Bacteriology
; Correlation methods
; Ecosystems
; Estuaries
; Eutrophication
; Fluorescence microscopy
; Forestry
; Genes
; Nitrification
; Nitrogen
; Polymerase chain reaction
; Sediments
; AOB amoA
; Bacterial community
; Bacterial community composition
; Denitrification process
; Environmental gradient
; Fluorescence in situ hybridization
; nirS
; Nitrification-denitrification
; Denitrification
; acetic acid
; nitrite
; nitrogen
; bacterium
; community composition
; estuarine ecosystem
; microbial community
; nitrogen
; relative abundance
; species diversity
; ammonia oxidizer
; amoA gene
; AOB gene
; Article
; cell aggregation
; correlation coefficient
; denitrification
; dominant gene
; environmental release
; estuary
; eutrophication
; fluorescence in situ hybridization
; gene
; microbial community
; microbial diversity
; nirS gene
; nitrification
; nitrogen cycling
; nonhuman
; oxidation
; pH
; polymerase chain reaction
; population abundance
; sediment
; species composition
; China
; Hangzhou Bay
; Zhejiang
; Bacteria (microorganisms)
Scopus学科分类: Agricultural and Biological Sciences: Aquatic Science
; Earth and Planetary Sciences: Oceanography
; Environmental Science: Pollution
英文摘要: Coupled nitrogen cycling processes can alleviate the negative effects of eutrophication caused by excessive nitrogen load in estuarine ecosystems. The abundance and diversity of nitrifiers and denitrifiers across different environmental gradients were examined in the sediment of Hangzhou Bay. Quantitative PCR and Pearson's correlation analyses suggested that the bacterial ammonia-oxidizers (AOB) were the dominant phylotypes capable of ammonia oxidation, while the nirS-encoding denitrifiers predominated in the denitrification process. Simultaneously, nitrite and pH were found to be the two major factors influencing amoA and nir gene abundances, and the distribution of bacterial communities. Moreover, the ratio of nirS/AOB amoA gene abundance showed negative correlation with nitrite concentration. Fluorescence in situ hybridization further demonstrated that AOB and acetate-denitrifying cells were closely connected and formed obvious aggregates in the sediment. Together, all these results provided us a preliminary insight for coupled nitrification-denitrification processes in the sediment of Hangzhou Bay. © 2017 Elsevier Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/88561
Appears in Collections: 过去全球变化的重建 全球变化的国际研究计划
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作者单位: Zhejiang Province Key Laboratory for Water Pollution Control and Environmental Safety Technology, Institute of Environmental Science and Technology, Zhejiang University, 866 Yuhangtang Road, Hangzhou, China; State Key Laboratory of Satellite Ocean Environment Dynamics, Second Institute of Oceanography, State Oceanic Administration, 36 Baochu North Road, Hangzhou, China
Recommended Citation:
Zhu W.,Wang C.,Sun F.,et al. Overall bacterial community composition and abundance of nitrifiers and denitrifiers in a typical macrotidal estuary[J]. Marine Pollution Bulletin,2018-01-01,126