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Validate the archaea-generating-hypothesis of manganese nodules

Research Project

Project/Area Number 18K18787
Research Category

Grant-in-Aid for Challenging Research (Exploratory)

Allocation TypeMulti-year Fund
Review Section Medium-sized Section 17:Earth and planetary science and related fields
Research InstitutionHiroshima University

Principal Investigator

Shiraishi Fumito  広島大学, 理学研究科, 助教 (30626908)

Project Period (FY) 2018-06-29 – 2020-03-31
Project Status Completed (Fiscal Year 2019)
Budget Amount *help
¥6,370,000 (Direct Cost: ¥4,900,000、Indirect Cost: ¥1,470,000)
Fiscal Year 2019: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
Fiscal Year 2018: ¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000)
Keywordsマンガン団塊 / マンガンクラスト / マンガン酸化微生物
Outline of Final Research Achievements

Manganese oxides gather attention as potential metal resources, and they are also important for understanding the evolution of Earth and life. This study aimed to understand the formation mechanism of manganese oxides in natural environment. The results of this study indicated that 1) the microbial metabolisms played important role in the formation of manganese crusts in Sambe hot spring, 2) vast amount of Mn-microparticles are contained in pelagic clay, and 3) many hollow structures presented at the surface of manganese nodules perhaps representing manganese-oxidizing archaea.

Academic Significance and Societal Importance of the Research Achievements

本研究により,天然環境中でのマンガン酸化物形成に微生物が大きく寄与していることが明らかになった.このことは,金属資源として注目されているマンガン団塊やマンガンクラストの形成にマンガン酸化微生物が関与している可能性を示唆している.また本研究により,底生の酸素発生型光合成微生物が放出する酸素によって効率的にマンガン酸化が起きることが示され,これは同様の現象が約24億年前の全球凍結後にも起きた可能性を示唆している.

Report

(3 results)
  • 2019 Annual Research Report   Final Research Report ( PDF )
  • 2018 Research-status Report
  • Research Products

    (11 results)

All 2019 2018 Other

All Journal Article (2 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 2 results,  Open Access: 2 results) Presentation (7 results) (of which Invited: 3 results) Remarks (2 results)

  • [Journal Article] Depositional processes of microbially colonized manganese crusts, Sambe hot spring, Japan2019

    • Author(s)
      Shiraishi Fumito、Matsumura Yuya、Chihara Ryoji、Okumura Tomoyo、Itai Takaaki、Kashiwabara Teruhiko、Kano Akihiro、Takahashi Yoshio
    • Journal Title

      Geochimica et Cosmochimica Acta

      Volume: 258 Pages: 1-18

    • DOI

      10.1016/j.gca.2019.05.023

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Significant contribution of subseafloor microparticles to the global manganese budget2019

    • Author(s)
      Uramoto Go-Ichiro、Morono Yuki、Tomioka Naotaka、Wakaki Shigeyuki、Nakada Ryoichi、Wagai Rota、Uesugi Kentaro、Takeuchi Akihisa、Hoshino Masato、Suzuki Yoshio、Shiraishi Fumito、Mitsunobu Satoshi、Suga Hiroki、Takeichi Yasuo、Takahashi Yoshio、Inagaki Fumio
    • Journal Title

      Nature Communications

      Volume: 10 Issue: 1 Pages: 400-400

    • DOI

      10.1038/s41467-019-08347-2

    • NAID

      120006784524

    • Related Report
      2018 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] Life-water-mineral interactions and their products2019

    • Author(s)
      Shiraishi, F.
    • Organizer
      日本地球惑星科学連合2019年大会
    • Related Report
      2019 Annual Research Report
    • Invited
  • [Presentation] 酸化的な遠洋性堆積物中に存在する大量の微小マンガン粒について2019

    • Author(s)
      浦本豪一郎・諸野祐樹・富岡尚敬・若木重行・中田亮一・和穎朗太・上杉健太朗・竹内晃久・星野真人・鈴木芳生・光延聖・白石史人・菅大暉・武市泰男・高橋嘉夫・稲垣史生
    • Organizer
      日本地球惑星科学連合2019年大会
    • Related Report
      2019 Annual Research Report
  • [Presentation] 酸化的な遠洋性堆積物中に存在する大量の微小マンガン粒について(IODP Exp. 329)2019

    • Author(s)
      浦本豪一郎・諸野祐樹・富岡尚敬・若木重行・中田亮一・和穎朗太・上杉健太朗・竹内晃久・星野真人・鈴木芳生・光延聖・白石史人・菅大暉・武市泰男・高橋嘉夫・稲垣史生
    • Organizer
      日本地球惑星科学連合2019年大会
    • Related Report
      2019 Annual Research Report
  • [Presentation] 野外における微小電極測定の実際2019

    • Author(s)
      白石史人
    • Organizer
      日本微生物生態学会第33回大会
    • Related Report
      2019 Annual Research Report
    • Invited
  • [Presentation] Life-water-mineral interactions and their products2019

    • Author(s)
      白石史人
    • Organizer
      日本地球惑星科学連合2019年大会
    • Related Report
      2018 Research-status Report
    • Invited
  • [Presentation] 微生物が生息するマンガン酸化物表面におけるMn(II)酸化過程2018

    • Author(s)
      白石史人・松村宥也・千原亮二・奥村知世・板井啓明・柏原輝彦・狩野彰宏・高橋嘉夫
    • Organizer
      日本地球惑星科学連合2018年大会
    • Related Report
      2018 Research-status Report
  • [Presentation] 南太平洋環流域の堆積物に含まれるマンガン鉱物塊の鉱物学的・地球化学的特徴について2018

    • Author(s)
      浦本豪一郎・諸野祐樹・富岡尚敬・若木重行・中田亮一・和穎朗太・上杉健太朗・竹内晃久・星野真人・鈴木芳生・光延聖・白石史人・菅大暉・武市泰男・高橋嘉夫・稲垣史生
    • Organizer
      日本地球惑星科学連合2018年大会
    • Related Report
      2018 Research-status Report
  • [Remarks] 地球生物学(Geobiology)

    • URL

      https://home.hiroshima-u.ac.jp/fshirai/research.html

    • Related Report
      2019 Annual Research Report
  • [Remarks] 研究成果】海底堆積物に膨大な“微小マンガン粒”を発見

    • URL

      https://www.hiroshima-u.ac.jp/news/49626

    • Related Report
      2018 Research-status Report

URL: 

Published: 2018-07-25   Modified: 2021-02-19  

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