Anaerobic ammonium oxidation (anammox) bacterial diversity, abundance, and activity in marsh sediments of the Yangtze Estuary
Hou, Lijun1; Zheng, Yanling1; Liu, Min2; Gong, Jun3; Zhang, Xiaoli3; Yin, Guoyu1; You, Li1
Source PublicationJOURNAL OF GEOPHYSICAL RESEARCH-BIOGEOSCIENCES
2013-07-01
Volume118Issue:3Pages:1237-1246
KeywordNitrogen Anammox Yangtze Estuary
AbstractAnaerobic ammonium oxidation (anammox) as an important process of nitrogen cycle has been studied in estuarine environments. However, knowledge about the dynamics of anammox bacteria and their interactions with associated activity remains scarce in these environments. Here we report the anammox bacterial diversity, abundance, and activity in the Yangtze Estuary, using molecular and isotope-tracing techniques. The phylogenetic analysis of 16S rRNA indicated that high anammox bacterial diversity occurred in this estuary, including Scalindua, Brocadia, Kuenenia, and two novel clusters. The patterns of community composition and diversity of anammox bacteria differed across the estuary. Salinity was a key environmental factor defining the geographical distribution and diversity of the anammox bacterial community at the estuarine ecosystem. Temperature and organic carbon also had significant influences on anammox bacterial biodiversity. The abundance of anammox bacteria ranged from 2.63x10(6) and 1.56x10(7) gene copies g(-1), and its spatiotemporal variations were related significantly to salinity, temperature, and nitrite content. The anammox activity was related to temperature, nitrite, and anammox bacterial abundance, with values of 0.94-6.61nmolNg(-1)h(-1). The tight link between the anammox and denitrification processes implied that denitrifying bacteria may be a primary source of nitrite for the anammox bacteria in the estuarine marshes. On the basis of the N-15 tracing experiments, the anammox process was estimated to contribute 6.6%-12.9% to the total nitrogen loss whereas the remainder was attributed to denitrification.
SubtypeArticle
Indexed BySCI
Language英语
WOS KeywordEVOLUTIONARY GENETICS ANALYSIS ; OXYGEN MINIMUM ZONE ; OXIDIZING BACTERIA ; FRESH-WATER ; NITRATE REDUCTION ; MARINE-SEDIMENTS ; RIVER ESTUARY ; CHANGJIANG ESTUARY ; SEQUENCE ALIGNMENT ; MOLECULAR EVIDENCE
WOS Research AreaEnvironmental Sciences & Ecology ; Geology
WOS IDWOS:000325549900022
Citation statistics
Cited Times:179[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.yic.ac.cn/handle/133337/9050
Collection海岸带生物学与生物资源利用重点实验室_海岸带生物学与生物资源保护实验室
Affiliation1.E China Normal Univ, State Key Lab Estuarine & Coastal Res, Shanghai 200062, Peoples R China
2.E China Normal Univ, Dept Geog, Shanghai 200062, Peoples R China
3.Chinese Acad Sci, Yantai Inst Coastal Zone Res, Yantai, Peoples R China
Recommended Citation
GB/T 7714
Hou, Lijun,Zheng, Yanling,Liu, Min,et al. Anaerobic ammonium oxidation (anammox) bacterial diversity, abundance, and activity in marsh sediments of the Yangtze Estuary[J]. JOURNAL OF GEOPHYSICAL RESEARCH-BIOGEOSCIENCES,2013,118(3):1237-1246.
APA Hou, Lijun.,Zheng, Yanling.,Liu, Min.,Gong, Jun.,Zhang, Xiaoli.,...&You, Li.(2013).Anaerobic ammonium oxidation (anammox) bacterial diversity, abundance, and activity in marsh sediments of the Yangtze Estuary.JOURNAL OF GEOPHYSICAL RESEARCH-BIOGEOSCIENCES,118(3),1237-1246.
MLA Hou, Lijun,et al."Anaerobic ammonium oxidation (anammox) bacterial diversity, abundance, and activity in marsh sediments of the Yangtze Estuary".JOURNAL OF GEOPHYSICAL RESEARCH-BIOGEOSCIENCES 118.3(2013):1237-1246.
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