| 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
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| 发表期刊 | JOURNAL OF GEOPHYSICAL RESEARCH-BIOGEOSCIENCES
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| 2013-07-01 | |
| 卷号 | 118期号:3页码:1237-1246 |
| 关键词 | Nitrogen Anammox Yangtze Estuary |
| 英文摘要 | Anaerobic 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. |
| 文章类型 | Article |
| 收录类别 | SCI |
| 语种 | 英语 |
| 关键词[WOS] | EVOLUTIONARY GENETICS ANALYSIS ; OXYGEN MINIMUM ZONE ; OXIDIZING BACTERIA ; FRESH-WATER ; NITRATE REDUCTION ; MARINE-SEDIMENTS ; RIVER ESTUARY ; CHANGJIANG ESTUARY ; SEQUENCE ALIGNMENT ; MOLECULAR EVIDENCE |
| 研究领域[WOS] | Environmental Sciences & Ecology ; Geology |
| WOS记录号 | WOS:000325549900022 |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://ir.yic.ac.cn/handle/133337/9050 |
| 专题 | 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 |
| 作者单位 | 1.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 |
| 推荐引用方式 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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