Temperature limits to deep subseafloor life in the Nankai Trough subduction zone.

Autor: Heuer VB; Center for Marine Environmental Sciences (MARUM), University of Bremen, Bremen, Germany., Inagaki F; Research and Development Center for Ocean Drilling Science, Japan Agency for Marine-Earth Science and Technology (JAMSTEC), Yokohama, Japan.; Kochi Institute for Core Sample Research, JAMSTEC, Kochi, Japan., Morono Y; Kochi Institute for Core Sample Research, JAMSTEC, Kochi, Japan., Kubo Y; Center for Deep Earth Exploration (CDEX), JAMSTEC, Yokohama, Japan., Spivack AJ; Graduate School of Oceanography, University of Rhode Island, Narragansett, RI, USA., Viehweger B; Center for Marine Environmental Sciences (MARUM), University of Bremen, Bremen, Germany., Treude T; Department of Earth, Planetary, and Space Sciences, Department of Atmospheric and Oceanic Sciences, University of California, Los Angeles (UCLA), Los Angeles, CA, USA., Beulig F; Center for Geomicrobiology, Department of Bioscience, Aarhus University, Aarhus, Denmark., Schubotz F; Center for Marine Environmental Sciences (MARUM), University of Bremen, Bremen, Germany., Tonai S; Faculty of Science and Technology, Kochi University, Kochi, Japan., Bowden SA; Department of Geology and Petroleum Geology, School of Geosciences, University of Aberdeen, Aberdeen, UK., Cramm M; Department of Biological Sciences, University of Calgary, Calgary, AB, Canada., Henkel S; Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Bremerhaven, Germany., Hirose T; Kochi Institute for Core Sample Research, JAMSTEC, Kochi, Japan., Homola K; Graduate School of Oceanography, University of Rhode Island, Narragansett, RI, USA., Hoshino T; Kochi Institute for Core Sample Research, JAMSTEC, Kochi, Japan., Ijiri A; Kochi Institute for Core Sample Research, JAMSTEC, Kochi, Japan., Imachi H; Institute for Extra-cutting-edge Science and Technology Avantgarde Research, JAMSTEC, Yokosuka, Japan., Kamiya N; Graduate School of Integrated Basic Sciences, Nihon University, Tokyo, Japan., Kaneko M; Geomicrobiology Research Group, National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, Japan., Lagostina L; Department of Environmental Systems Science, ETH Zürich, Zürich, Switzerland., Manners H; School of Geography, Earth and Environmental Sciences, Faculty of Science and Engineering, Plymouth University, Plymouth, UK., McClelland HL; Department of Earth and Planetary Sciences, Washington University in St. Louis, St. Louis, MO, USA., Metcalfe K; Division of Geological and Planetary Sciences, California Institute of Technology, Pasadena, CA, USA., Okutsu N; Atmosphere and Ocean Research Institute, University of Tokyo, Tokyo, Japan., Pan D; Department of Subsurface Geobiological Analysis and Research, JAMSTEC, Yokosuka, Japan., Raudsepp MJ; School of Earth Sciences, University of Queensland, St. Lucia, QLD, Australia., Sauvage J; Graduate School of Oceanography, University of Rhode Island, Narragansett, RI, USA., Tsang MY; Department of Earth Sciences, University of Toronto, Toronto, ON, Canada., Wang DT; Department of Earth, Atmospheric and Planetary Sciences, Massachusetts Institute of Technology, Cambridge, MA, USA., Whitaker E; Department of Oceanography, Texas A&M University, College Station, TX, USA., Yamamoto Y; Department of Mathematical Science and Advanced Technology, JAMSTEC, Yokosuka, Japan., Yang K; Department of Earth System Sciences, Yonsei University, Seoul, Republic of Korea., Maeda L; Center for Deep Earth Exploration (CDEX), JAMSTEC, Yokohama, Japan., Adhikari RR; Center for Marine Environmental Sciences (MARUM), University of Bremen, Bremen, Germany., Glombitza C; Institute of Biogeochemistry and Pollutant Dynamics, ETH Zürich, Zürich, Switzerland., Hamada Y; Kochi Institute for Core Sample Research, JAMSTEC, Kochi, Japan., Kallmeyer J; GFZ German Research Centre for Geosciences, Potsdam, Germany., Wendt J; Center for Marine Environmental Sciences (MARUM), University of Bremen, Bremen, Germany., Wörmer L; Center for Marine Environmental Sciences (MARUM), University of Bremen, Bremen, Germany., Yamada Y; Research and Development Center for Ocean Drilling Science, Japan Agency for Marine-Earth Science and Technology (JAMSTEC), Yokohama, Japan., Kinoshita M; Earthquake Research Institute, University of Tokyo, Tokyo, Japan., Hinrichs KU; Center for Marine Environmental Sciences (MARUM), University of Bremen, Bremen, Germany. khinrichs@uni-bremen.de.
Jazyk: angličtina
Zdroj: Science (New York, N.Y.) [Science] 2020 Dec 04; Vol. 370 (6521), pp. 1230-1234.
DOI: 10.1126/science.abd7934
Abstrakt: Microorganisms in marine subsurface sediments substantially contribute to global biomass. Sediments warmer than 40°C account for roughly half the marine sediment volume, but the processes mediated by microbial populations in these hard-to-access environments are poorly understood. We investigated microbial life in up to 1.2-kilometer-deep and up to 120°C hot sediments in the Nankai Trough subduction zone. Above 45°C, concentrations of vegetative cells drop two orders of magnitude and endospores become more than 6000 times more abundant than vegetative cells. Methane is biologically produced and oxidized until sediments reach 80° to 85°C. In 100° to 120°C sediments, isotopic evidence and increased cell concentrations demonstrate the activity of acetate-degrading hyperthermophiles. Above 45°C, populated zones alternate with zones up to 192 meters thick where microbes were undetectable.
(Copyright © 2020 The Authors, some rights reserved; exclusive licensee American Association for the Advancement of Science. No claim to original U.S. Government Works.)
Databáze: MEDLINE
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