期刊
ORGANIC GEOCHEMISTRY
卷 58, 期 -, 页码 137-140出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.orggeochem.2013.01.012
关键词
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资金
- Japan Society for the Promotion of Science
- Submarine Resources Research Project at JAMSTEC
- PRESTO program, Japan Science and Technology Agency (JST)
- Max Planck Society
- Grants-in-Aid for Scientific Research [25610166] Funding Source: KAKEN
We report the presence of coenzyme factor 430 (F430), a prosthetic group of methyl coenzyme M reductase for archaeal methanogenesis, in the deep sub-seafloor biosphere. At 106.7 m depth in sediment collected off Shimokita Peninsula, northwestern Pacific, its concentration was estimated to be at least 40 fmol g sediment(-1) (i.e. 36 pg g(-1) wet sediment). This is about three orders of magnitude lower than typical concentrations of archaeal intact polar lipids in similar sub-seafloor sediments. On the basis of the concentration of F430 in methanogens and conversion to biomass composed of typical sub-seafloor microbial cells, we estimated that ca. 2 x 106 cells g(-1) could be methanogens in the deeply buried marine sediment. (C) 2013 Elsevier Ltd. All rights reserved.
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