Rare bacteria in seawater are dominant in the bacterial assemblage associated with the Bloom-forming dinoflagellate Noctiluca scintillans
文献类型：期刊论文
| 作者 | Xia, Xiaomin6; Leung, Sze Ki1; Cheung, Shunyan1; Zhang, Shuwen2,3; Liu, Hongbin1,4 |
| 刊名 | SCIENCE OF THE TOTAL ENVIRONMENT
 |
| 出版日期 | 2020 |
| 卷号 | 711页码:135107 |
| ISSN号 | 0048-9697 |
| 关键词 | Noctiluca Dinoflagellate-associated bacteria Rickettsiaceae Metagenome |
| DOI | 10.1016/j.scitotenv.2019.135107 |
| 英文摘要 | Noctiluca scintillans is a bloom-forming dinoflagellate, which is widely distributed in the global coastal seas. Associated bacteria have been proven to be essential for the survival and growth of zooplanktons. However, the diversity and function of bacteria associated with Noctiluca scintillans are under studied and largely unknown. Here, we examined the diversity and function of bacteria associated with field-acquired and laboratory-maintained Noctiluca cells. Our results showed that the bacterial communities associated with the laboratory-maintained Noctiluca were dominated by Rhodobacterales, whereas those associated with the field-acquired Noctiluca varied over time. In addition, major Noctiluca-associated bacteria had low relative abundance in the ambient environment. We also observed that when field-acquired Noctiluca were cultivated with a mono-species food source, there was a shift in the associated bacterial communities. Metagenomic analysis showed that genes involved in DNA replication/repair and osmotic regulation were more abundant than other genes in the Noctiluca-associated bacterial community. Furthermore, the associated bacteria were able to degrade various complex carbohydrates and actively participate in the nitrogen cycle in their host cells. In addition, a draft genome of the Rickettsiaceae strain was recovered, and we showed that the genome did not contain genes encoding hexokinase and phosphoglucomutase, two key enzymes involved in glucose utilization. Instead, the primary energy sources of this bacteria were shown to be glutamate, glutamine and pyruvate, which might be obtained from the host. We suggest that in return, the Rickettsiaceae strain is likely to provide cofactors and amino acids to the host. This study highlights the spatial and temporal complexity of bacterial communities associated with Noctiluca, and provides valuable insights into the interaction between a host and its associated bacteria. (C) 2019 Elsevier B.V. All rights reserved. |
| 资助机构 | Key Special Project for Introduced Talents Team of Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou) [GML2019ZD0405]; National Natural Science Foundation of China, ChinaNational Natural Science Foundation of China (NSFC) [31971501, 41906117]; CAS Pioneer Hundred Talents Program; South China Sea Institute of Oceanography, CAS, China [Y8SL031001, Y9YB021001]; Guangdong MEPP Fund, China [GDOE (2019) A23]; Research Grants Council of the Hong Kong Special Administrative Region, ChinaHong Kong Research Grants Council [T21/602/16, 16128416, 16101318]; State Key Laboratory of Marine Pollution (SKLMP), Hong Kong, China [SKLMP/SCRF/0016] ; Key Special Project for Introduced Talents Team of Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou) [GML2019ZD0405]; National Natural Science Foundation of China, ChinaNational Natural Science Foundation of China (NSFC) [31971501, 41906117]; CAS Pioneer Hundred Talents Program; South China Sea Institute of Oceanography, CAS, China [Y8SL031001, Y9YB021001]; Guangdong MEPP Fund, China [GDOE (2019) A23]; Research Grants Council of the Hong Kong Special Administrative Region, ChinaHong Kong Research Grants Council [T21/602/16, 16128416, 16101318]; State Key Laboratory of Marine Pollution (SKLMP), Hong Kong, China [SKLMP/SCRF/0016] |
| 源URL | [http://ir.scsio.ac.cn/handle/344004/18469]  |
| 专题 | 南海海洋研究所_中科院海洋生物资源可持续利用重点实验室 |
| 作者单位 | 1.Southern Marine Sci & Engn Guangdong Lab Guangzho, Guangzhou, Peoples R China 2.Hong Kong Univ Sci & Technol, Div Life Sci, Hong Kong, Peoples R China 3.South China Normal Univ, Coll Life Sci, Guangzhou Key Lab Subtrop Biodivers & Biomonitori, Guangzhou, Peoples R China 4.South China Normal Univ, Coll Life Sci, Guangdong Prov Key Lab Hlth & Safe Aquaculture, Guangzhou, Peoples R China 5.Hong Kong Univ Sci & Technol, Southern Marine Sci & Engn Guangdong Lab, Hong Kong Branch, Hong Kong, Peoples R China 6.Chinese Acad Sci, South China Sea Inst Oceanol, Key Lab Trop Marine Bioresources & Ecol, Guangzhou, Peoples R China |
| 推荐引用方式 GB/T 7714 | Xia, Xiaomin,Leung, Sze Ki,Cheung, Shunyan,et al. Rare bacteria in seawater are dominant in the bacterial assemblage associated with the Bloom-forming dinoflagellate Noctiluca scintillans[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2020,711:135107. |
| APA | Xia, Xiaomin,Leung, Sze Ki,Cheung, Shunyan,Zhang, Shuwen,&Liu, Hongbin.(2020).Rare bacteria in seawater are dominant in the bacterial assemblage associated with the Bloom-forming dinoflagellate Noctiluca scintillans.SCIENCE OF THE TOTAL ENVIRONMENT,711,135107. |
| MLA | Xia, Xiaomin,et al."Rare bacteria in seawater are dominant in the bacterial assemblage associated with the Bloom-forming dinoflagellate Noctiluca scintillans".SCIENCE OF THE TOTAL ENVIRONMENT 711(2020):135107. |
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来源：南海海洋研究所
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