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题名:
Relative Abundance of Ammonia Oxidizers, Denitrifiers, and Anammox Bacteria in Sediments of Hyper-Nutrified Estuarine Tidal Flats and in Relation to Environmental Conditions
作者: Zhang, XiaoLi(张晓黎)1; Agogue, Helene2; Dupuy, Christine2; Jun Gong(龚骏)1
刊名: CLEAN-SOIL AIR WATER
ISSN号: 1863-0650
出版日期: 2014-06-01
卷号: 42, 期号:6, 页码:815-823
关键词: Community size ; Environment factor ; Gene copy number ratio ; Heavy metal ; Nitrogen cycle
学科分类: Environmental Sciences; Marine & Freshwater Biology; Water Resources
DOI: 10.1002/clen.201300013
产权排序: [Zhang, Xiaoli; Gong, Jun] Chinese Acad Sci, Yantai Inst Coastal Zone Res, Microbial Ecol Grp, Key Lab Coastal Biol & Bioresource Utilizat, Yantai 264003, Peoples R China; [Agogue, Helene; Dupuy, Christine] Univ La Rochelle, CNRS, Littoral Environm & Soc LIENSS, UMR 7266, La Rochelle, France
通讯作者: Gong, J (reprint author), Chinese Acad Sci, Yantai Inst Coastal Zone Res, Yantai 264003, Peoples R China. jgong@yic.ac.cn
作者部门: 海岸带生物学与生物资源利用所重点实验室
中文摘要: The relative abundances of nitrifying, denitrifying and anammox prokaryotes in sediments of three hyper-nutrified estuarine tidal flats of Laizhou Bay, Bohai Sea, China were investigated. Quantitative PCR estimates indicated that in most cases archaeal (AOA) amoA genes were more abundant than bacterial (AOB) amoA genes, and ratio of AOA/AOB was correlated with pH, Cd, and Cu. Of the denitrifiers, nirK-type outnumbered nirS-type, with nosZ-type being the lowest. Variation of the ratio between nirK and nirS abundance depends on pH, nitrite, nitrate, and Cd. The combination of (nirS_nirK-nosZ), an indicator of genetic potentials for N2O emission, was only related to the temperature. Anammox bacterial 16S rRNA gene abundances were correlated with salinity, pH, nitrite, and Cu. In contrast, the contribution of anammox to N-2 production, by using anammox bacterial 16S rRNA/nosZ ratio as a proxy, was correlated to temperature, ammonium and dissolved oxygen in the overlying water, ratio of organic carbon to nitrogen, and arsenic in sediments. Our study stresses that abundances of N-cycling functional groups respond differently to variations of environmental conditions, and multiple factors including heavy metals with relatively low concentrations may play a role in shaping nitrogen cycling processes in these estuarine tidal flats.
英文摘要: The relative abundances of nitrifying, denitrifying and anammox prokaryotes in sediments of three hyper-nutrified estuarine tidal flats of Laizhou Bay, Bohai Sea, China were investigated. Quantitative PCR estimates indicated that in most cases archaeal (AOA) amoA genes were more abundant than bacterial (AOB) amoA genes, and ratio of AOA/AOB was correlated with pH, Cd, and Cu. Of the denitrifiers, nirK-type outnumbered nirS-type, with nosZ-type being the lowest. Variation of the ratio between nirK and nirS abundance depends on pH, nitrite, nitrate, and Cd. The combination of (nirS_nirK-nosZ), an indicator of genetic potentials for N2O emission, was only related to the temperature. Anammox bacterial 16S rRNA gene abundances were correlated with salinity, pH, nitrite, and Cu. In contrast, the contribution of anammox to N-2 production, by using anammox bacterial 16S rRNA/nosZ ratio as a proxy, was correlated to temperature, ammonium and dissolved oxygen in the overlying water, ratio of organic carbon to nitrogen, and arsenic in sediments. Our study stresses that abundances of N-cycling functional groups respond differently to variations of environmental conditions, and multiple factors including heavy metals with relatively low concentrations may play a role in shaping nitrogen cycling processes in these estuarine tidal flats.
研究领域[WOS]: Environmental Sciences & Ecology ; Marine & Freshwater Biology ; Water Resources
项目资助者: Environmental Sciences & Ecology ; Marine & Freshwater Biology ; Water Resources
关键词[WOS]: FRANCISCO BAY ESTUARY ; NITRITE REDUCTASE ; UPWELLING SYSTEM ; MARINE-SEDIMENTS ; TRACE-METALS ; WIDESPREAD OCCURRENCE ; RIVER ESTUARY ; PROCESS RATES ; HEAVY-METALS ; JIAOZHOU BAY
文章类型: Article
收录类别: SCI
语种: 英语
WOS记录号: WOS:000337622000017
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.yic.ac.cn/handle/133337/8548
Appears in Collections:海岸带生物学与生物资源利用所重点实验室_期刊论文

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作者单位: 1.Chinese Acad Sci, Yantai Inst Coastal Zone Res, Microbial Ecol Grp, Key Lab Coastal Biol & Bioresource Utilizat, Yantai 264003, Peoples R China
2.Univ La Rochelle, CNRS, Littoral Environm & Soc LIENSS, UMR 7266, La Rochelle, France

Recommended Citation:
Zhang, Xiaoli,Agogue, Helene,Dupuy, Christine,et al. Relative Abundance of Ammonia Oxidizers, Denitrifiers, and Anammox Bacteria in Sediments of Hyper-Nutrified Estuarine Tidal Flats and in Relation to Environmental Conditions[J]. CLEAN-SOIL AIR WATER,2014,42(6):815-823.
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文件名: Relative Abundance of Ammonia Oxidizers, Denitrifiers, and Anammox Bacteria in Sediments of Hyper-Nutrified Estuarine Tidal Flats and in Relation to Environmental Conditions.pdf
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