Exploration for the hadal biosphere

• Project/Area Number: 24370015
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Partial Multi-year Fund
• Section: 一般
• Research Field: Ecology/Environment
• Research Institution: Japan Agency for Marine-Earth Science and Technology
• Principal Investigator: NUNOURA Takuro 独立行政法人海洋研究開発機構, 海洋生命理工学研究開発センター, グループリーダー (60359164)
• Co-Investigator(Kenkyū-buntansha): TAKAKI Yoshihiro 独立行政法人海洋研究開発機構, 深海・地殻内生物圏研究分野, 主任技術研究員 (10399561)
• Project Period (FY): 2012-04-01 – 2015-03-31
• Project Status: Completed (Fiscal Year 2014)
• Budget Amount: ¥18,460,000 (Direct Cost: ¥14,200,000、Indirect Cost: ¥4,260,000); Fiscal Year 2014: ¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000); Fiscal Year 2013: ¥6,630,000 (Direct Cost: ¥5,100,000、Indirect Cost: ¥1,530,000); Fiscal Year 2012: ¥7,410,000 (Direct Cost: ¥5,700,000、Indirect Cost: ¥1,710,000)
• Keywords: 超深海 / 海溝 / 硝化 / 物質循環 / 微生物生態 / 環境ゲノム / 堆積物 / 小笠原海溝 / 日本海溝

Outline of Final Research Achievements

In this study, we have analyzed microbial ecosystems in halal water and sediments from the Mariana Trench, Izu-Ogasawara Trench and Japan Trench, and discussed about the geological and oceanographical backgrounds that support the halal biosphere. In the Mariana Trench project, we have revealed that the microbial ecosystem in the halal water was distinct from those in the upper abyssal and bathyal waters. Moreover, we hypothesized that the trench ecosystem was supported by the intrinsic geochemical cycle especially for the suspension of organic compounds from slope sediment (Nunoura et al. PNAS 2015). We also obtained data that presented the presence of halal water biosphere in the other trenches such as Izu-Ogasawara and Japan Trenches.

Research Products

• [Journal Article] Hadal biosphere: insight into the microbial ecosystem in the deepest ocean on Earth. (2015)
  • Author(s): Nunoura T, Takaki Y, Hirai M, Shigeru S, Makabe A, Koide O, Kikuchi T, Miyazaki J, Koba K, Yoshida N, Sunamura M, Takai K
  • Journal Title: Proc Natl Acad Sci USA Volume: 112 Issue: 11
  • DOI: 10.1073/pnas.1421816112
  • Peer Reviewed / Open Access / Acknowledgement Compliant
• [Journal Article] Genomic characterization of a temperate phage of the psychrotolerant deep-sea bacterium Aurantimonas sp. (2015)
  • Author(s): Yoshida M, Yoshida-Takashima Y, Nunoura T, Takai K
  • Journal Title: Extremophiles Volume: 19 Issue: 1 Pages: 49-58
  • DOI: 10.1007/s00792-014-0702-5
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] 超深海・海溝生命圏の発見 (2015)
  • Author(s): 布浦 拓郎
  • Journal Title: バイオサイエンスとバイオインダストリー Volume: 73
• [Presentation] Genomic insights into the niche adaptation of marine Thaumarchaeota along the water column from the sea surface to hadal ocean (2015)
  • Author(s): Takuro Nunoura, Yoshihiro Takaki, Aya Shuto, Ramunas Stepanauskas, Ken Takai
  • Organizer: Third Microbial Single Cell Genomics Workshop
  • Place of Presentation: Boothbay Harbor, Maine, USA
  • Year and Date: 2015-06-16
  • Invited
• [Presentation] １細胞ゲノム解析から見る海洋性アンモニア酸化アーキアの環境適応機構 (2015)
  • Author(s): 布浦拓郎・高木善弘・首藤彩・高井研
  • Organizer: 日本地球惑星科学連合2015年合同大会
  • Place of Presentation: 幕張メッセ国際会議場・千葉県千葉市
  • Year and Date: 2015-05-26
• [Presentation] １細胞ゲノム解析から見る海洋性アンモニア酸化アーキアの環境適応機構 (2015)
  • Author(s): 布浦拓郎・高木善弘・首藤彩・Ramunas Stepanauskas・高井研
  • Organizer: 第9回日本ゲノム微生物学会年会
  • Place of Presentation: 神戸大学、兵庫県神戸市
  • Year and Date: 2015-03-08
• [Presentation] Single-cell genomics revealed niche separation of marine Thaumarchaeota along the water column on the Ogasawara Trench (2014)
  • Author(s): Takuro Nunoura, Yoshihiro Takaki, Aya Shuto, Ramunas Stepanauskas, Ken Takai
  • Organizer: Molecular Biology of Archaea 4
  • Place of Presentation: Paris, France
  • Year and Date: 2014-05-21
• [Presentation] 日本海溝横断調査から見えた海溝生命圏の成り立ち (2014)
  • Author(s): 布浦拓郎・平井美穂・吉田ゆかり・西澤学・川口慎介・牧田寛子・宮崎淳一・砂村倫成・高井研
  • Organizer: 日本地球惑星科学連合2014年合同大会
  • Place of Presentation: パシフィコ横浜、神奈川県横浜市
  • Year and Date: 2014-04-30
• [Presentation] 深海堆積物表層における硝化菌・嫌気的アンモニア酸化菌の分布 (2014)
  • Author(s): 布浦 拓郎・平井 美穂・西澤 学・Juliarni・野牧 秀隆・菅 美・田角 英二・宮崎 淳一・眞壁 明子・木庭 啓介・高井 研
  • Organizer: 日本地球惑星科学連合2014年合同大会
  • Place of Presentation: パシフィコ横浜、神奈川県横浜市
  • Year and Date: 2014-04-28
• [Presentation] Depth profiles of the marine ammonia-oxidizing Thaumarchaea from sea surface to bottom of the trenches (2012)
  • Author(s): Nunoura, et al.
  • Organizer: Molecular Biology of Archaea 3
  • Place of Presentation: 豊橋
  • Year and Date: 2012-09-20
• [Presentation] The trench biosphere : insights into microbial ecosystem in the deepest ocean. (2012)
  • Author(s): Nunoura, et al.
  • Organizer: 第28回日本微生物生態学会大会
  • Place of Presentation: ドイツ、マールブルグ
  • Year and Date: 2012-07-03
• [Presentation] Microbial diversity and ecosystem in hadopelagic waters and sediments : waters and sediments in the Challenger Deep, and sediments in the Ogasawara Trench (2012)
  • Author(s): Nunoura, et al.
  • Organizer: Gordon Conference Marine Microbes
  • Place of Presentation: イタリア、トスカーニ
  • Year and Date: 2012-06-27
• [Presentation] Niche separation of marine Thaumarchaea; sea surface to the deepest oceans
  • Author(s): Takuro Nunoura, Miho Hirai, Shigeru Shimamura, Yoshihiro Takaki, Ken Takai
  • Organizer: 2nd International workshop "The Last Frontier of Life: Extremophiles"
  • Place of Presentation: 韓国・済州島・Shineville Resort
  • Invited
• [Presentation] The deep cold trench biosphere: microbial ecosystem in the Challenger Deep
  • Author(s): Takuro Nunoura
  • Organizer: 2014 Ocean Sciences Meeting
  • Place of Presentation: アメリカ・ハワイ・ホノルル・Hawai‘i Convention Center
• [Presentation] 日本海溝横断~水塊中の硝化菌群集構造~
  • Author(s): 平井 美穂、布浦拓郎、吉田ゆかり、西澤学、川口慎介、宮崎淳一、牧田寛子、小出修、高井研
  • Organizer: 微生物生態学会年会
  • Place of Presentation: 鹿児島市・鹿児島大学
• [Remarks] 超深海・海溝生命圏を発見 ―マリアナ海溝の超深海水塊に独自の微生物生態系―
  • URL: http://www.jamstec.go.jp/j/about/press_release/20150224/
• [Remarks] 論文解説：「超深海・海溝生命圏を発見」について
  • URL: http://www.jamstec.go.jp/rcmb/j/omake.html
• [Remarks]
  • URL: http://www.jamstec.go.jp/biogeos/j/xbr/sugar/Member/Nunoura.html
• [Remarks]
  • URL: http://www.jamstec.go.jp/jir/infolib/meta_pub/G0000002REP