Particle-Attached and Free-Living Archaeal Communities in the Benthic Boundary Layer of the Mariana Trench
Jing, Hongmei1; Zhu, Wenda1,2; Liu, Hongbin3; Zheng, Liping1; Zhang, Yu4
2018-11-21
Source PublicationFRONTIERS IN MICROBIOLOGY
ISSN1664-302X
Volume9Pages:12
AbstractThe 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.
Keywordbenthic boundary layer archaea Mariana Trench particle-attached free-living
DOI10.3389/fmicb.2018.02821
Funding OrganizationNational 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)
Language英语
Funding ProjectNational 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 KeywordMICROBIAL COMMUNITIES ; SPATIAL-DISTRIBUTION ; NICHE SEPARATION ; CHALLENGER DEEP ; JAPAN TRENCH ; GROUP-I ; SEDIMENTS ; SEA ; CARBON ; DIVERSITY
WOS Research AreaMicrobiology
WOS SubjectMicrobiology
WOS IDWOS:000450797700001
PublisherFRONTIERS MEDIA SA
Citation statistics
Document Type期刊论文
Identifierhttp://ir.idsse.ac.cn/handle/183446/6358
Collection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
Corresponding AuthorJing, Hongmei
Affiliation1.Chinese Acad Sci, Inst Deep Sea Sci & Engn, CAS Key Lab Expt Study Deep Sea Extreme Condit, Sanya, Peoples R China
2.Univ Chinese Acad Sci, Beijing, Peoples R China
3.Hong Kong Univ Sci & Technol, Div Life Sci, Kowloon, Hong Kong, Peoples R China
4.Shanghai Jiao Tong Univ, State Key Lab Ocean Engn, Inst Oceanog, Shanghai, Peoples R China
Recommended Citation
GB/T 7714
Jing, Hongmei,Zhu, Wenda,Liu, Hongbin,et al. Particle-Attached and Free-Living Archaeal Communities in the Benthic Boundary Layer of the Mariana Trench[J]. FRONTIERS IN MICROBIOLOGY,2018,9:12.
APA Jing, Hongmei,Zhu, Wenda,Liu, Hongbin,Zheng, Liping,&Zhang, Yu.(2018).Particle-Attached and Free-Living Archaeal Communities in the Benthic Boundary Layer of the Mariana Trench.FRONTIERS IN MICROBIOLOGY,9,12.
MLA Jing, Hongmei,et al."Particle-Attached and Free-Living Archaeal Communities in the Benthic Boundary Layer of the Mariana Trench".FRONTIERS IN MICROBIOLOGY 9(2018):12.
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