Macroalgal blooms favor heterotrophic diazotrophic bacteria in nitrogen-rich and phosphorus-limited coastal surface waters in the Yellow Sea
文献类型：期刊论文
| 作者 | Zhang, XL ; Song, YJ; Liu, DY; Keesing, JK; Gong, J
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| 刊名 | ESTUARINE COASTAL AND SHELF SCIENCE
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| 出版日期 | 2015-09-20 |
| 卷号 | 163期号:A页码:75-81 |
| ISSN号 | 0272-7714 |
| 关键词 | eutrophication green tide N-2-fixing bacteria niche adaptation nitrogen fixation nutrient limitation non-Cyanobacteria |
| 其他题名 | 在黄海高氮与低磷水体中大型藻类暴有利于异养类细菌在固氮菌群落中获得优势 |
| 通讯作者 | Gong, J (reprint author), Chinese Acad Sci, Yantai Inst Coastal Zone Res, Lab Microbial Ecol & Matter Cycles, Yantai 264003, Peoples R China. jgong@yic.ac.cn |
| 产权排序 | [Zhang, Xiaoli; Song, Yanjing; Gong, Jun] Chinese Acad Sci, Yantai Inst Coastal Zone Res, Lab Microbial Ecol & Matter Cycles, Yantai 264003, Peoples R China; [Song, Yanjing] Univ Chinese Acad Sci, Beijing 100049, Peoples R China; [Liu, Dongyan] Chinese Acad Sci, Yantai Inst Coastal Zone Res, Lab Coastal Ecol, Yantai 264003, Peoples R China; [Keesing, John K.] CSIRO Wealth Oceans Flagship Marine & Atmospher R, Wembley, WA 6913, Australia |
| 中文摘要 | Macroalgal blooms may lead to dramatic changes in physicochemical variables and biogeochemical cycling in affected waters. However, little is known about the effects of macroalgal blooms on marine bacteria, especially those functioning in nutrient cycles. We measured environmental factors and investigated bacterial diazotrophs in two niches, surface waters that were covered (CC) and non-covered (CF) with massive macroalgal canopies of Ulva prolifera, in the Yellow Sea in the summer of 2011 using real-time PCR and clone library analysis of nifH genes. We found that heterotrophic diazotrophs (Gammaproteobacteria) dominated the communities and were mostly represented by Vibrio-related phylotypes in both CC and CF. Desulfovibrio-related phylotypes were only detected in CC. There were significant differences in community composition in these two environments (p < 0.001) and a much higher abundance of nifH in CC (4.55 x 10(6) copies l(-1)) than in CF (2.49 x 10(6) copies l(-1)). The nifH copy number was inversely related to concentrations of ammonium and dissolved inorganic nitrogen and to the stoichiometric ratios of N:P and N:Si. This indicates that macroalgal blooms significantly affect diazotrophic abundance and community composition and that vibrios and Desulfovibrio-related heterotrophic diazotrophs adapt well to the (N-rich but P-limited) environment during blooming. Potential ecological and microbiological mechanisms behind this scenario are discussed. (C) 2014 Elsevier Ltd. All rights reserved. |
| 英文摘要 | Macroalgal blooms may lead to dramatic changes in physicochemical variables and biogeochemical cycling in affected waters. However, little is known about the effects of macroalgal blooms on marine bacteria, especially those functioning in nutrient cycles. We measured environmental factors and investigated bacterial diazotrophs in two niches, surface waters that were covered (CC) and non-covered (CF) with massive macroalgal canopies of Ulva prolifera, in the Yellow Sea in the summer of 2011 using real-time PCR and clone library analysis of nifH genes. We found that heterotrophic diazotrophs (Gammaproteobacteria) dominated the communities and were mostly represented by Vibrio-related phylotypes in both CC and CF. Desulfovibrio-related phylotypes were only detected in CC. There were significant differences in community composition in these two environments (p < 0.001) and a much higher abundance of nifH in CC (4.55 x 10(6) copies l(-1)) than in CF (2.49 x 10(6) copies l(-1)). The nifH copy number was inversely related to concentrations of ammonium and dissolved inorganic nitrogen and to the stoichiometric ratios of N:P and N:Si. This indicates that macroalgal blooms significantly affect diazotrophic abundance and community composition and that vibrios and Desulfovibrio-related heterotrophic diazotrophs adapt well to the (N-rich but P-limited) environment during blooming. Potential ecological and microbiological mechanisms behind this scenario are discussed. (C) 2014 Elsevier Ltd. All rights reserved. |
| 研究领域[WOS] | Marine & Freshwater Biology ; Oceanography |
| 关键词[WOS] | NORTH PACIFIC-OCEAN ; FIXING MICROORGANISMS ; BIOGEOCHEMICAL CONTROLS ; NUTRIENT ENRICHMENT ; COMMUNITY STRUCTURE ; MARINE ECOSYSTEMS ; VIBRIO-CHOLERAE ; ATLANTIC-OCEAN ; NIFH GENES ; GREEN-TIDE |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000362604700013 |
| 源URL | [http://ir.yic.ac.cn/handle/133337/9592]  |
| 专题 | 烟台海岸带研究所_海岸带生物学与生物资源利用所重点实验室 烟台海岸带研究所_近岸生态与环境实验室 |
| 推荐引用方式 GB/T 7714 | Zhang, XL,Song, YJ,Liu, DY,et al. Macroalgal blooms favor heterotrophic diazotrophic bacteria in nitrogen-rich and phosphorus-limited coastal surface waters in the Yellow Sea[J]. ESTUARINE COASTAL AND SHELF SCIENCE,2015,163(A):75-81. |
| APA | Zhang, XL,Song, YJ,Liu, DY,Keesing, JK,&Gong, J.(2015).Macroalgal blooms favor heterotrophic diazotrophic bacteria in nitrogen-rich and phosphorus-limited coastal surface waters in the Yellow Sea.ESTUARINE COASTAL AND SHELF SCIENCE,163(A),75-81. |
| MLA | Zhang, XL,et al."Macroalgal blooms favor heterotrophic diazotrophic bacteria in nitrogen-rich and phosphorus-limited coastal surface waters in the Yellow Sea".ESTUARINE COASTAL AND SHELF SCIENCE 163.A(2015):75-81. |
入库方式： OAI收割
来源：烟台海岸带研究所
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