Microbial community structures of methane hydrate-bearing sediments in the Ulleung Basin, East Sea of Korea SCIE SCOPUS

Cited 28 time in WEB OF SCIENCE Cited 31 time in Scopus
Title
Microbial community structures of methane hydrate-bearing sediments in the Ulleung Basin, East Sea of Korea
Author(s)
Lee, Jin-Woo; Kwon, Kae Kyoung; Azizi, Aqil; Oh, Hyun-Myung; Kim, Wonduck; Bahk, Jang-Jun; Lee, Dong-Hun; Lee, Jung-Hyun
KIOST Author(s)
Kwon, Kae Kyoung(권개경)Lee, Jung Hyun(이정현)
Publication Year
2013-11
Abstract
Microbial communities of a methane hydrate-bearing deep sediment cores, collect from Site UBGH2-10 from the Ulleung-Basin (East Sea of Korea), were characterized by phylogenetic analysis on the basis of 16S rRNA gene cloning. Quantification of key functional genes related to sulfate reduction (dsrA) and methanogenesis (mcrA) and that of bacteria and archaea were conducted using molecular approaches. On the basis of geochemical data, four subsections were selected to compare the microbial diversity relative to the presence of methane hydrate. Marine benthic group B (MBGB) and candidate division JS1 (JS1) were the dominant taxa in the archaeal and bacterial libraries, respectively, throughout the core, except in the deep layer. Interestingly, ANME-1b members and mcrA were detected only in sulfate methane transition zone (SMTZ). However, the proportions of sulfate-reducing Deltaproteobacteria clones and dsrA copy numbers differed (i.e., a very low proportion of clones but a sufficiently high dsrA copy number relative to bacteria). These results suggests that anaerobic oxidation of methane may occur mainly in SMTZ of Ulleung Basin sediment, where it is performed by ANME-1b via an unidentified oxidization process. (C) 2013 Elsevier Ltd. All rights reserved.
ISSN
0264-8172
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/3066
DOI
10.1016/j.marpetgeo.2013.06.002
Bibliographic Citation
MARINE AND PETROLEUM GEOLOGY, v.47, pp.136 - 146, 2013
Publisher
ELSEVIER SCI LTD
Subject
SULFATE-REDUCING BACTERIA; DEEP MARINE-SEDIMENTS; ANAEROBIC OXIDATION; SP-NOV.; GENE-SEQUENCES; SEEP SEDIMENTS; ARCHAEA; DIVERSITY; REPRESENT; ABUNDANCE
Keywords
Methane hydrate; Sulfate methane transition zone (SMTZ); ANME-1b; Marine benthic group B (MBGB); Candidate division JS1 (JS1); The Ulleung Basin
Type
Article
Language
English
Document Type
Article
Publisher
ELSEVIER SCI LTD
Related Researcher
Research Interests

marine biotechnology,molecular microbiology,해양생명공학,분자미생물학

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