Links of Extracellular Enzyme Activities, Microbial Metabolism, and Community Composition in the River-Impacted Coastal Waters
文献类型：期刊论文
| 作者 | Shi, Zhen1; Xu, Jie1,3; Li, Xiangfu1; Li, Ruihuan1; Li, Qian1; xujie@scsio.ac.cn |
| 刊名 | JOURNAL OF GEOPHYSICAL RESEARCH-BIOGEOSCIENCES
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| 出版日期 | 2019 |
| 卷号 | 124期号:11页码:3507 |
| 关键词 | extracellular enzymatic activity bacterial production bacterial respiration bacterial community composition coastal waters |
| DOI | 10.1029/2019JG005095 |
| 英文摘要 | Extracellular enzymatic activity (EEA), production, respiration, and composition of the bacterial community were determined along environmental gradients in the river-impacted coastal waters in the South China Sea during summer in order to examine the links of EEA, metabolic activity, and composition of the bacterial community. The initial step of substrate utilization was coupled with metabolic activity of the bacterial community. The activity of leucine aminopeptidase was closely related to the level of phytoplankton biomass, suggesting that leucine-containing compounds primarily resulted from phytoplankton, which was likely partly responsible for the close link between bacterioplankton and phytoplankton in marine environments. A shift from the dominance of leucine aminopeptidase in EEA in eutrophic environments to chitobiases in pristine waters was attributed to bacterial preference for leucine-containing compounds and spatial variability in substrate supply. Spatial pattern of the enzymatic rates along an environmental gradient differed at the community and the cellular level. The enzymatic rates of the bacterial community decreased offshore, which were linked to substrate supply and the bacterial community composition. However, cell-specific enzymatic rates were modulated by not only the bacterial community composition but also the carbon partition between anabolic and catabolic processes as environmental conditions changed, both of which eventually altered bacterial abundance. Functional redundancy of bacterial groups existed despite shifts in the bacterial community composition, suggesting that the bacterial community might maximize their function of hydrolyzing substrates across marine environments. Our findings improved the understanding of the connection of extracellular enzymatic activity, metabolic activity, and community composition of bacterioplankton. |
| 资助机构 | Key Research Program of Frontier Sciences, CAS [QYZDJ-SSW-DQC022]; National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC) [41506095, 41676075]; State Key Laboratory of Tropical Oceanography [LTOZZ1705, LTOZZ 1802]; project of Public Welfare Research and Capability Building, Department of Science and Technology of Guangdong Province [2018B030320005]; project of Innovation and Development, Innovation Academy of South China Sea Ecology and Environmental Engineering, Chinese Academy of Sciences [ISEE2019ZR02] ; Key Research Program of Frontier Sciences, CAS [QYZDJ-SSW-DQC022]; National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC) [41506095, 41676075]; State Key Laboratory of Tropical Oceanography [LTOZZ1705, LTOZZ 1802]; project of Public Welfare Research and Capability Building, Department of Science and Technology of Guangdong Province [2018B030320005]; project of Innovation and Development, Innovation Academy of South China Sea Ecology and Environmental Engineering, Chinese Academy of Sciences [ISEE2019ZR02] |
| 源URL | [http://ir.scsio.ac.cn/handle/344004/18196]  |
| 专题 | 南海海洋研究所_热带海洋环境国家重点实验室(LTO) |
| 作者单位 | 1.Chinese Acad Sci, State Key Lab Trop Oceanog, South China Sea Inst Oceanol, Guangzhou, Guangdong, Peoples R China 2.Univ Chinese Acad Sci, Coll Marine Sci, Beijing, Peoples R China 3.Chinese Acad Sci, Innovat Acad South China Sea Ecol & Environm Engn, Guangzhou, Guangdong, Peoples R China |
| 推荐引用方式 GB/T 7714 | Shi, Zhen,Xu, Jie,Li, Xiangfu,et al. Links of Extracellular Enzyme Activities, Microbial Metabolism, and Community Composition in the River-Impacted Coastal Waters[J]. JOURNAL OF GEOPHYSICAL RESEARCH-BIOGEOSCIENCES,2019,124(11):3507, 3520. |
| APA | Shi, Zhen,Xu, Jie,Li, Xiangfu,Li, Ruihuan,Li, Qian,&xujie@scsio.ac.cn.(2019).Links of Extracellular Enzyme Activities, Microbial Metabolism, and Community Composition in the River-Impacted Coastal Waters.JOURNAL OF GEOPHYSICAL RESEARCH-BIOGEOSCIENCES,124(11),3507. |
| MLA | Shi, Zhen,et al."Links of Extracellular Enzyme Activities, Microbial Metabolism, and Community Composition in the River-Impacted Coastal Waters".JOURNAL OF GEOPHYSICAL RESEARCH-BIOGEOSCIENCES 124.11(2019):3507. |
入库方式： OAI收割
来源：南海海洋研究所
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