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Genomic Insight Into the Predominance of Candidate Phylum Atribacteria JS1 Lineage in Marine Sediments

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Title
Genomic Insight Into the Predominance of Candidate Phylum Atribacteria JS1 Lineage in Marine Sediments
Other Titles
해양 퇴적물에서 후보문 Atribacteria JS1의 우점에 대한 유전체적 고찰
Authors
Chun, Jongsik
Lee, Hong Kum
Shin, Seung Chul
Hong, Soon Gyu
Choi, Hakkyum
Noh, Hyun-Ju
Kim, Mincheol
Hwang, Chung Yeon
Lee, Jae Il
Hwang, Kyuin
Lee, Yung Mi
Subject
Microbiology
Keywords
Antarctica; Ross Sea; Atribacteria; Candidate division; JS1; Single cell genomics; marine sediment
Issue Date
2018-11-29
Citation
전종식, et al. 2018. "Genomic Insight Into the Predominance of Candidate Phylum Atribacteria JS1 Lineage in Marine Sediments". FRONTIERS IN MICROBIOLOGY, 9(1): 2909-2913.
Abstract
Candidate phylum Atribacteria JS1 lineage is one of the predominant bacterial groups in anoxic subseafloor sediments, especially in organic-rich or gas hydrate-containing sediments. However, due to the lack of axenic culture representatives, metabolic potential and biogeochemical roles of this phylum have remained elusive. Here, we examined the microbial communities of marine sediments of the Ross Sea, Antarctica, and found candidate phylum Atribacteria JS1 lineage was the most abundant candidate phylum accounting for 9.8?40.8% of the bacterial communities with a single dominant operational taxonomic unit (OTU). To elucidate the metabolic potential and ecological function of this species, we applied a single-cell genomic approach and obtained 18 single-cell amplified genomes presumably from a single species that was consistent with the dominant OTU throughout the sediment. The composite genome constructed by co-assembly showed the highest genome completeness among available Atribacteria JS1 genomes. Metabolic reconstruction suggested fermentative potential using various substrates and syntrophic acetate oxidation coupled with hydrogen or formate scavenging methanogens. This metabolic potential supports the predominance of Atribacteria JS1 in anoxic environments expanding our knowledge of the ecological function of this uncultivated group.
URI
http://repository.kopri.re.kr/handle/201206/9530
DOI
http://dx.doi.org/10.3389/fmicb.2018.02909
ISSN
1664-302X
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