Particle-Attached and Free-Living Archaeal Communities in the Benthic Boundary Layer of the Mariana Trench | |
Zheng, Liping3; Jing, Hongmei3; Zhu, Wenda3,4; Liu, Hongbin1; Zhang, Yu2 | |
刊名 | FRONTIERS IN MICROBIOLOGY |
2018-11-21 | |
卷号 | 9期号:1页码:12 |
关键词 | Benthic Boundary Layer Archaea Mariana Trench Particle-attached Free-living |
ISSN号 | 1664-302X |
DOI | 10.3389/fmicb.2018.02821 |
英文摘要 | The benthic boundary layer (BBL) is the part of the water column that is situated near to the sediment surface, where active oceanic biogeochemical cycling occurs. Archaea play an important role in mediating this cycling, however, their composition and diversity in the BBL remain largely unknown. We investigated the community composition and abundance of both particle-attached (PA) and free-living (FL) archaea in the BBL on the slopes of the Mariana Trench using Illumine sequencing and quantitative PCR (qPCR), at both the DNA and RNA levels. Our results showed that Thaumarchaeota (>90%) and Woesearchaeota (1-10%) dominated in all the BBL samples, and that the former was composed mainly of Marine Group I (MGI). A clear separation of PA and FL samples was observed, and they showed a high level of similarity to the subsurface sediments and the water column, respectively. No significant differences were detected in the archaeal communities located in the southern and northern slopes of the Mariana Trench, or between the levels of DNA and RNA. However, lower RNA/DNA ratios (estimated by qPCR) were found in the PA samples than in the FL samples, indicating higher transcriptional activities in the FL fractions. A distinct archaeal community structure was found in the middle of the trench when compared with samples collected at the same depth at other stations along the trench slopes. This indicates that a dynamic deep current might affect the distribution of organic matter on the slopes. Our study provides direct information regarding the archaeal communities in the BBL of the Mariana Trench. We suggest that this might promote further exploration of the ecological roles and microbial processes of such communities located in deep-sea ecosystems. |
资助项目 | National Key R&D Program of China[2018YFC0309805] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDB06010202] ; Training Program of the Major Research Plan of the National Natural Science Foundation of China[91751116] ; Hong Kong Research Grants Council[N-HKUST609/15] ; Hong Kong Research Grants Council[16101917] ; National Key Research and Development Program of China[2016YFC03007] ; National Basic Research Program of China (973 Program)[2014CB441503] |
WOS关键词 | Microbial Communities ; Spatial-distribution ; Niche Separation ; Challenger Deep ; Japan Trench ; Group-i ; Sediments ; Sea ; Carbon ; Diversity |
WOS研究方向 | Microbiology |
语种 | 英语 |
出版者 | FRONTIERS MEDIA SA |
WOS记录号 | WOS:000450797700001 |
资助机构 | National Key R&D Program of China ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Training Program of the Major Research Plan of the National Natural Science Foundation of China ; Hong Kong Research Grants Council ; National Key Research and Development Program of China ; National Basic Research Program of China (973 Program) |
内容类型 | 期刊论文 |
版本 | 出版稿 |
源URL | [http://ir.idsse.ac.cn/handle/183446/6357] |
专题 | 深海科学研究部_深海生物学研究室_海洋微生物分子生态学研究组 |
通讯作者 | Jing, Hongmei |
作者单位 | 1.Hong Kong Univ Sci & Technol, Div Life Sci, Kowloon, Hong Kong, Peoples R China 2.Shanghai Jiao Tong Univ, State Key Lab Ocean Engn, Inst Oceanog, Shanghai, Peoples R China 3.Chinese Acad Sci, Inst Deep Sea Sci & Engn, CAS Key Lab Expt Study Deep Sea Extreme Condit, Sanya, Peoples R China 4.Univ Chinese Acad Sci, Beijing, Peoples R China |
推荐引用方式 GB/T 7714 | Zheng, Liping,Jing, Hongmei,Zhu, Wenda,et al. Particle-Attached and Free-Living Archaeal Communities in the Benthic Boundary Layer of the Mariana Trench[J]. FRONTIERS IN MICROBIOLOGY,2018,9(1):12. |
APA | Zheng, Liping,Jing, Hongmei,Zhu, Wenda,Liu, Hongbin,&Zhang, Yu.(2018).Particle-Attached and Free-Living Archaeal Communities in the Benthic Boundary Layer of the Mariana Trench.FRONTIERS IN MICROBIOLOGY,9(1),12. |
MLA | Zheng, Liping,et al."Particle-Attached and Free-Living Archaeal Communities in the Benthic Boundary Layer of the Mariana Trench".FRONTIERS IN MICROBIOLOGY 9.1(2018):12. |
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