Exploring deep microbial life in coal-bearing sediment down to ∼2.5 km below the ocean floor

Inagaki, F., Hinrichs, K. -U., Kubo, Y., Bowles, M. W., Heuer, V. B., Hong, W. -L., Hoshino, T., Ijiri, A., Imachi, H., Ito, M., Kaneko, M., Lever, M. A., Lin, Y. -S., Methe, B. A., Morita, S., Morono, Y., Tanikawa, W., Bihan, M., Bowden, S. A., Elvert, M., Glombitza, C., Gross, D., Harrington, G. J., Hori, T., Li, K., Limmer, D., Liu, C. -H., Murayama, M., Ohkouchi, N., Ono, S., Park, Y. -S., Phillips, S. C., Prieto-Mollar, X., Purkey, M., Riedinger, N., Sanada, Y., Sauvage, J., Snyder, G., Susilawati, R., Takano, Y., Tasumi, E., Terada, T., Tomaru, H., Trembath-Reichert, E., Wang, D. T. and Yamada, Y. (2015) Exploring deep microbial life in coal-bearing sediment down to ∼2.5 km below the ocean floor. Science, 349 6246: 420-424. doi:10.1126/science.aaa6882


Author Inagaki, F.
Hinrichs, K. -U.
Kubo, Y.
Bowles, M. W.
Heuer, V. B.
Hong, W. -L.
Hoshino, T.
Ijiri, A.
Imachi, H.
Ito, M.
Kaneko, M.
Lever, M. A.
Lin, Y. -S.
Methe, B. A.
Morita, S.
Morono, Y.
Tanikawa, W.
Bihan, M.
Bowden, S. A.
Elvert, M.
Glombitza, C.
Gross, D.
Harrington, G. J.
Hori, T.
Li, K.
Limmer, D.
Liu, C. -H.
Murayama, M.
Ohkouchi, N.
Ono, S.
Park, Y. -S.
Phillips, S. C.
Prieto-Mollar, X.
Purkey, M.
Riedinger, N.
Sanada, Y.
Sauvage, J.
Snyder, G.
Susilawati, R.
Takano, Y.
Tasumi, E.
Terada, T.
Tomaru, H.
Trembath-Reichert, E.
Wang, D. T.
Yamada, Y.
Title Exploring deep microbial life in coal-bearing sediment down to ∼2.5 km below the ocean floor
Journal name Science   Check publisher's open access policy
ISSN 1095-9203
0036-8075
Publication date 2015-07-24
Sub-type Article (original research)
DOI 10.1126/science.aaa6882
Open Access Status Not Open Access
Volume 349
Issue 6246
Start page 420
End page 424
Total pages 5
Place of publication Washington, DC, United States
Publisher American Association for the Advancement of Science
Collection year 2016
Language eng
Formatted abstract
Microbial life inhabits deeply buried marine sediments, but the extent of this vast ecosystem remains poorly constrained. Here we provide evidence for the existence of microbial communities in ~40° to 60°C sediment associated with lignite coal beds at ~1.5 to 2.5 km below the seafloor in the Pacific Ocean off Japan. Microbial methanogenesis was indicated by the isotopic compositions of methane and carbon dioxide, biomarkers, cultivation data, and gas compositions. Concentrations of indigenous microbial cells below 1.5 km ranged from <10 to ~104 cells cm−3. Peak concentrations occurred in lignite layers, where communities differed markedly from shallower subseafloor communities and instead resembled organotrophic communities in forest soils. This suggests that terrigenous sediments retain indigenous community members tens of millions of years after burial in the seabed.
Keyword Marine sediment
Microbial life
Terrigenous sediment
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Earth Sciences Papers
Official 2016 Collection
 
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