Interrelationship between geological settings, geochemical environments and energy metabolisms supporting early evolution of life in the Precambrian Eon

• Project/Area Number: 18684027
• Research Category: Grant-in-Aid for Young Scientists (A)
• Allocation Type: Single-year Grants
• Research Field: Geology
• Research Institution: Japan Agency for Marine-Earth Science and Technology
• Principal Investigator: TAKAI Ken Japan Agency for Marine-Earth Science and Technology, 極限環境生物圏研究センター, プログラムディレクター (80359166)
• Project Period (FY): 2006 – 2008
• Project Status: Completed (Fiscal Year 2008)
• Budget Amount: ¥20,410,000 (Direct Cost: ¥15,700,000、Indirect Cost: ¥4,710,000); Fiscal Year 2008: ¥3,120,000 (Direct Cost: ¥2,400,000、Indirect Cost: ¥720,000); Fiscal Year 2007: ¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000); Fiscal Year 2006: ¥13,130,000 (Direct Cost: ¥10,100,000、Indirect Cost: ¥3,030,000)
• Keywords: 生命の起源 / 初期生命進化 / 熱水活動 / 冥王代 / 太古代 / 超マフィック岩 / 水素生成 / エネルギー代謝 / メタン菌 / 地下生命圏 / 超好熱性

Research Abstract

始生代地球における初期生命進化を導いた地質-生物相互作用としての独創的かつ魅力的な「UltraH^3リンケージ」作業仮説を発表した。フィールドワークに基づく検証では、大西洋中央海嶺のRainbowフィールドとインド洋中央海嶺KaireiフィールドにおけるUltraH^3リンケージを実証した。また実験に基づく検証では、世界で初めて「始生代超マフィック岩」であるコマチアイトの熱水反応より水素が生成することを証明した。

Research Products

• [Journal Article] Serpentinized troctolites exposed near the Kairei Hydrothermal Field, Central Indian Ridge : Insights into the origin of the Kairei hydrothermal fluid supporting a unique microbial ecosystem (2009)
  • Author(s): Nakamura, K., et al. (6^<th> author)
  • Journal Title: Earth Planet. Sci. Lett. 280 Pages: 128-136
  • Peer Reviewed
• [Journal Article] Igneous, alteration and exhumation processes recorded in abyssal peridotites and related fault rocks from an oceanic core complex along the Central Indian Ridge (2009)
  • Author(s): Morishita, T., et al. (8^<th> author)
  • Journal Title: J. Petrol. (in press)
  • Peer Reviewed
• [Journal Article] Igneous, alteration and exhumation processes recorded in abyssal peridotites and related fault rocks from an oceanic core complex along the Central Indian Ridge. (2009)
  • Author(s): Morishita, T., et al.
  • Journal Title: Journal of Petrology (印刷中)
  • Peer Reviewed
• [Journal Article] Serpentinized troctolites exposed near the Kairei Hydrothermal Field, Central Indian Ridged Insights into the origin of the Kairei hydrothermal fluid supporting a unique microbial ecosystem. (2009)
  • Author(s): Nakamura, K., et al.
  • Journal Title: Earth and Planetary Sciences Letter (印刷中)
  • Peer Reviewed
• [Journal Article] Geological background of the Kairei and Edmond hydrothermal fields along the Central Indian Ridge : implications of their vent fluids' distinct chemistry (2008)
  • Author(s): Kumagai, H., et al. (15^<th> author)
  • Journal Title: Geofluid 8 Pages: 239-251
  • Peer Reviewed
• [Journal Article] Geological background of the Kairei and Edmond hydrothermal fields al ong the Central Indian Ridge: implications of their vent fluids' distinct chemistry. (2008)
  • Author(s): Kumagai, H., et al.
  • Journal Title: Geofluid 8 Pages: 239-251
  • Peer Reviewed
• [Journal Article] 熱水循環が支える海底下微生物生態系 (2008)
  • Author(s): 高井研
  • Journal Title: バイオインダストリー 25 Pages: 18-26
• [Journal Article] エネルギー代謝の進化から見た初期生命進化-UltraH3 リンケージ仮説 (2007)
  • Author(s): 高井 研、他
  • Journal Title: 生物の科学 遺伝 vol. 61, No. 6 Pages: 28-36
• [Journal Article] エネルギ-代謝の進化から見た初期生命進化-UltraH^3リンケージ仮説 (2007)
  • Author(s): 高井 研
  • Journal Title: 生物の科学 遺伝 61 Pages: 28-36
• [Journal Article] Ultramafics-Hydrothermalism-Hydrogenesis-HyperSLiME (UltraH3) linkage : a key insight into early microbial ecosystem in the Archean deep-sea hydrothermal systems (2007)
  • Author(s): Ken Takai, Kentaro Nakamura, Katsuhiko Suzuki, Fumio Inagaki, Kenneath H. Nealson, Hidenori Kumagai
  • Journal Title: Paleontological Research 10・4 Pages: 269-282
  • NAID: 110006196898
• [Journal Article] Ultramafics-Hydrothermalism-Hydrogenesis-HyperSLiME (UltraH3) linkage : a key insight into early microbial ecosystem in the Archean deep-sea hydrothermal systems (2006)
  • Author(s): Takai, K., et al.
  • Journal Title: Paleontological Res. 10 Pages: 269-282
  • NAID: 110006196898
  • Peer Reviewed
• [Presentation] 極限環境微生物から見える生命(圏)の限界とhabitability (2008)
  • Author(s): Takai, K.
  • Organizer: 2008年度日本極限環境生物学会第8回年会
  • Place of Presentation: 立教大学
  • Year and Date: 2008-11-04
• [Presentation] 先カンブリア代の知られざる大進化:地球最古の生態系誕生から多細胞生物の誕生まで (2008)
  • Author(s): Takai, K.
  • Organizer: 日本地質学会第115年学術大会
  • Place of Presentation: 秋田大学手形キャンパス
  • Year and Date: 2008-10-22
• [Presentation] 最古の生態系はどのような熱水系で繁栄したか:ウルトラエッチキューブリンケージ仮説 (2008)
  • Author(s): Takai, K.
  • Organizer: 2008年度日本地球化学会第55回年会
  • Place of Presentation: 東京大学駒場キャンパス
  • Year and Date: 2008-10-17
• [Presentation] 最古の生態系はどのような熱水系で繁栄したか:ウルトラエッチキューブリンケージ仮説 (2008)
  • Author(s): 高井研
  • Organizer: 2008年度日本地球化学会
  • Place of Presentation: 東京大学駒場キャンパス
  • Year and Date: 2008-09-17
• [Presentation] Serpentinized olivine-rich gabbros near the Kairei Hydrothermal Field, Central Indian Ridge : A key to understanding the unique chemistry of the vent fluid (2008)
  • Author(s): Nakamura, K., et al. (3^<rd> author)
  • Organizer: Goldschmidt 2008 - "from Sea to Sky"
  • Place of Presentation: Vancouver, Canada
  • Year and Date: 2008-07-15
• [Presentation] アストロバイオロジーとアーキア:極限環境におけるアーキアのポテンシャル (2008)
  • Author(s): Takai, K.
  • Organizer: 第20回日本Archaea研究会
  • Place of Presentation: 那覇
  • Year and Date: 2008-07-05
• [Presentation] Methanogenesis at 122℃ under high pressure produces isotopically 'abnormal'methane (2007)
  • Author(s): Takai, K
  • Organizer: Thermophiles2007
  • Place of Presentation: ベルゲン、ノルウェー
  • Year and Date: 2007-09-17
• [Presentation] Diversity of chemolithoautotrophs associated with hot hydrothermal fluid chemistry (2007)
  • Author(s): Takai, K.
  • Organizer: IRTI Biogeochemical Interaction at deep-seavents
  • Place of Presentation: Woods Hole, MA
  • Year and Date: 2007-09-10
• [Presentation] 深海・地殻内微生物活動の模擬現場環境条件下解析法(高井法)の開発と応用 (2007)
  • Author(s): 高井研、中村謙太郎、土岐知弘、角皆潤
  • Organizer: 2007年地球惑星合同大会年会
  • Year and Date: 2007-05-24
• [Presentation] Ultramafics-Hydrothermalism-Hydrogene sis-HyperSLiME (UltraH3) linkage : a key insight into early microbial ecosystem in the Archean deep-sea hydrothermal systems (2006)
  • Author(s): Ken Takai
  • Organizer: Extremophiles 2006
  • Place of Presentation: Brest, France
  • Year and Date: 2006-09-19
• [Presentation] Ultramafics-Hydrothermalism-Hydrogene sis-HyperSLiME (UltraH3) linkage : a key insight into early microbial ecosystem in the Archean deep-sea hydrothermal systems (2006)
  • Author(s): Ken Takai
  • Organizer: 2nd Okazaki Biological Conference
  • Place of Presentation: Okazaki, Japan
  • Year and Date: 2006-09-13
• [Book] 「深海に四〇億年前の世界を見た!」 爆笑問題のニッポンの教養 File 17 (2008)
  • Author(s): 爆笑問題、高井 研
  • Publisher: 講談社
• [Book] 「深海に四〇億年前の世界を見た!」 (2008)
  • Author(s): 爆笑問題
  • Total Pages: 138
  • Publisher: 講談社