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Deep-sea hydrothermal electricity elucidates origin of life: Proposal of Electro-Iron-Sulfur World theory

Research Project

Project/Area Number 26610188
Research Category

Grant-in-Aid for Challenging Exploratory Research

Allocation TypeMulti-year Fund
Research Field Geochemistry/Cosmochemistry
Research InstitutionJapan Agency for Marine-Earth Science and Technology

Principal Investigator

YAMAMOTO Masahiro  国立研究開発法人海洋研究開発機構, 深海・地殻内生物圏研究分野, 研究員 (60435849)

Project Period (FY) 2014-04-01 – 2016-03-31
Project Status Completed (Fiscal Year 2015)
Budget Amount *help
¥3,770,000 (Direct Cost: ¥2,900,000、Indirect Cost: ¥870,000)
Fiscal Year 2015: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2014: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
Keywordsアストロバイオロジー / 生命の起源 / 化学進化 / 熱水噴出孔 / 電気化学
Outline of Final Research Achievements

I performed on-site measurement of redox potential on the surfaces of minerals around deep-sea hydrothermal vents, and proved that electricity generated in vent wall between hydrothermal fluid and seawater. It was also supported by laboratory experiment of measurement of redox potential on sulfide minerals in electrochemical cell. In addition, we observed that parts of primitive organic metabolic pathways were driven by controlled potential on the surface of sulfide minerals in electrochemical cells. These findings support the hypothesis that origin of life occurred on deep-sea hydrothermal vent.

Report

(3 results)
  • 2015 Annual Research Report   Final Research Report ( PDF )
  • 2014 Research-status Report
  • Research Products

    (6 results)

All 2016 2015 2014

All Journal Article (1 results) (of which Peer Reviewed: 1 results,  Open Access: 1 results) Presentation (5 results) (of which Int'l Joint Research: 1 results,  Invited: 2 results)

  • [Journal Article] Electrochemical CO2 Reduction by Ni-containing iron sulfides: how is CO2 electrochemically reduced at bisulfide-bearing deep-sea hydrothermal precipitates?2014

    • Author(s)
      Yamaguchi, A., Yamamoto, M., Takai, K., Ishii, T., Hashimoto, K., and Nakamura, R.
    • Journal Title

      Electrochimica Acta

      Volume: 141 Pages: 311-318

    • DOI

      10.1016/j.electacta.2014.07.078

    • Related Report
      2014 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] 深海熱水噴出孔における自然発電の実証と電気生態系の調査2016

    • Author(s)
      山本正浩, 中村龍平, 川市智史, 笠谷貴史, 谷崎明子, 阿部真理子, 津田美和子, 高木善弘, 熊谷英憲, 鈴木勝彦, 高井研
    • Organizer
      ブルーアース 2016
    • Place of Presentation
      東京海洋大学品川キャンパス(東京都港区)
    • Year and Date
      2016-03-08
    • Related Report
      2015 Annual Research Report
  • [Presentation] 深海熱水噴出孔表面における電気的化学進化の検証2016

    • Author(s)
      山本正浩
    • Organizer
      第4回 宇宙における生命ワークショップABCプロジェクト成果発表会
    • Place of Presentation
      一橋大学一橋講堂(東京都千代田区)
    • Year and Date
      2016-03-07
    • Related Report
      2015 Annual Research Report
  • [Presentation] 代謝が重要。代謝の進化。深海熱水噴出孔における発電現象は生命の起源を説明できるか?2015

    • Author(s)
      山本正浩
    • Organizer
      NINS/IURIC Colloquium 2015「学術研究の将来」
    • Place of Presentation
      ヤマハリゾートつま恋(静岡県掛川市)
    • Year and Date
      2015-12-01
    • Related Report
      2015 Annual Research Report
    • Invited
  • [Presentation] Electrochemical evolution of primordial metabolic core on deep-sea hydrothermal vent2015

    • Author(s)
      Masahiro Yamamoto, Ryuhei Nakamura, Ken Takai
    • Organizer
      8th Astrobiology Workshop
    • Place of Presentation
      東京工業大学地球生命研究所(東京都目黒区)
    • Year and Date
      2015-11-27
    • Related Report
      2015 Annual Research Report
    • Invited
  • [Presentation] Reproduction of primitive metabolic pathways on the iron sulfide surface with electricity2015

    • Author(s)
      Masahiro Yamamoto, Ryuhei Nakamura, Akiko Tanizaki, Ken Takai, Mitsuhiro Toriumi
    • Organizer
      Goldschmidt 2015
    • Place of Presentation
      Prague, the Czech Republic
    • Year and Date
      2015-08-15
    • Related Report
      2015 Annual Research Report
    • Int'l Joint Research

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Published: 2014-04-04   Modified: 2017-05-10  

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