GSTDTAP  > 气候变化
DOI10.1126/science.abd7934
Temperature limits to deep subseafloor life in the Nankai Trough subduction zone
Verena B. Heuer; Fumio Inagaki; Yuki Morono; Yusuke Kubo; Arthur J. Spivack; Bernhard Viehweger; Tina Treude; Felix Beulig; Florence Schubotz; Satoshi Tonai; Stephen A. Bowden; Margaret Cramm; Susann Henkel; Takehiro Hirose; Kira Homola; Tatsuhiko Hoshino; Akira Ijiri; Hiroyuki Imachi; Nana Kamiya; Masanori Kaneko; Lorenzo Lagostina; Hayley Manners; Harry-Luke McClelland; Kyle Metcalfe; Natsumi Okutsu; Donald Pan; Maija J. Raudsepp; Justine Sauvage; Man-Yin Tsang; David T. Wang; Emily Whitaker; Yuzuru Yamamoto; Kiho Yang; Lena Maeda; Rishi R. Adhikari; Clemens Glombitza; Yohei Hamada; Jens Kallmeyer; Jenny Wendt; Lars Wörmer; Yasuhiro Yamada; Masataka Kinoshita; Kai-Uwe Hinrichs
2020-12-04
发表期刊Science
出版年2020
英文摘要Marine sediments represent a massive microbial ecosystem, but we still do not fully understand what factors shape and limit life underneath the seafloor. Analyzing samples from a subduction zone off the coast of Japan, Heuer et al. found that microbial life, in particular bacterial vegetative cells, decreases as depth and temperature increases down to ∼600 meters below the seafloor, corresponding to temperatures of ∼70°C. Below this limit, endospores are common—a remnant, and a potential reservoir, of bacterial life. Deeper still is a sterile zone, and below 1000 meters is a scalding realm populated by vegetative cells. At such great depths, high concentrations of acetate and sulfate coexist, and there are also signs of hyperthermophilic methanogenesis. These data provide a fascinating window into an extreme and inhospitable environment that nonetheless supports microbial life. Science , this issue p. [1230][1] 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. [1]: /lookup/doi/10.1126/science.abd7934
领域气候变化 ; 资源环境
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文献类型期刊论文
条目标识符http://119.78.100.173/C666/handle/2XK7JSWQ/305843
专题气候变化
资源环境科学
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Verena B. Heuer,Fumio Inagaki,Yuki Morono,et al. Temperature limits to deep subseafloor life in the Nankai Trough subduction zone[J]. Science,2020.
APA Verena B. Heuer.,Fumio Inagaki.,Yuki Morono.,Yusuke Kubo.,Arthur J. Spivack.,...&Kai-Uwe Hinrichs.(2020).Temperature limits to deep subseafloor life in the Nankai Trough subduction zone.Science.
MLA Verena B. Heuer,et al."Temperature limits to deep subseafloor life in the Nankai Trough subduction zone".Science (2020).
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