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Survival strategy with light~Unique photoheterotrophs in the ocean

Research Project

Project/Area Number 21K12206
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 63010:Environmental dynamic analysis-related
Research InstitutionJapan Women's University (2023)
The University of Tokyo (2021-2022)

Principal Investigator

TAKABE Yuki  日本女子大学, 家政学部, 助教 (80635839)

Project Period (FY) 2021-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2023: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2022: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2021: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Keywords光従属栄養細菌 / 光合成 / 炭素循環 / カロテノイド / 細菌群集構造 / 光合成細菌 / ゲノム / 光エネルギー / 細菌 / 海洋炭素循環 / 酸素非発生型光合成
Outline of Research at the Start

本研究では、「光合成細菌」というこれまで海洋生態系の枠組みの中では注目されてこなかった細菌にスポットを当てる。本研究で注目する酸素非発生型好気性光合成細菌 (aerobic anoxygenic phototrophic bacteria, AAnPB) は、光エネルギーを利用し、細胞増殖と生残を強化していることが予想される。AAnPBが「光を使って生き残る」ことにより、海洋生態系内の炭素循環効率の上昇に寄与していることを実証することで、従来の海洋炭素循環像のパラダイムシフトを導くことを目指す。

Outline of Final Research Achievements

The present study focused on photoheterotrophic bacteria, whose contribution to the carbon cycle has been unclear within the framework of conventional ecosystem in the ocean, and aimed to clarify their dynamics and eco-physiological characteristics in the environment. Unlike other heterotrophs, photoheterotrophs utilize light energy for their biological activities and have an advantage in cell growth and survival, which may contribute to increasing the efficiency of carbon cycling in ecosystems in the ocean. Through this study, the preset study has clarified the characteristics of the carbon cycle by photoheterotrophic bacteria in the ecosystems, and have worked toward a paradigm shift in the conventional image of the carbon cycle of the ocean.

Academic Significance and Societal Importance of the Research Achievements

本研究では、光従属栄養細菌として酸素非発生型好気性光合成細菌 (aerobic anoxygenic phototrophic bacteria, 以下AAnPBと称する) という機能細菌群に注目した。AAnPBは全球海洋表層に普遍的に分布し、海洋炭素循環を駆動するキープレイヤーである。AAnPBは光合成によるエネルギー生産により従属栄養的増殖を補完することで、他の従属栄養細菌よりも高効率で炭素循環を駆動出来る潜在性がある。海洋炭素循環像にAAnPBという新たな存在を位置付けることにより、これまでの従属栄養細菌中心で見積もられていた循環効率と循環量がより正確なものになると予想される。

Report

(4 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Research-status Report
  • 2021 Research-status Report
  • Research Products

    (10 results)

All 2024 2023 2021 Other

All Journal Article (5 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 4 results,  Open Access: 4 results) Presentation (4 results) Remarks (1 results)

  • [Journal Article] Novel aerobic anoxygenic phototrophic bacterium Jannaschia pagri sp. nov., isolated from seawater around a fish farm2024

    • Author(s)
      Kuwata Koyo、Sato-Takabe Yuki、Nakai Ryosuke、Sugimura Yuya、Tazato Nozomi、Kunihiro Tadao、Morohoshi Sho、Iwataki Mitsunori、Hamasaki Koji、Shiozaki Takuhei
    • Journal Title

      Antonie van Leeuwenhoek

      Volume: 117 Issue: 1 Pages: 1-10

    • DOI

      10.1007/s10482-024-01971-z

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Low microbial abundance and community diversity within the egg capsule of the oviparous cloudy catshark (<i>Scyliorhinus torazame</i>) during oviposition2024

    • Author(s)
      Takagi Wataru、Masuda Ayami、Shimoyama Koya、Tokunaga Kotaro、Hyodo Susumu、Sato-Takabe Yuki
    • Journal Title

      bioRxiv

      Volume: - Pages: 1-27

    • DOI

      10.1101/2024.02.28.582473

    • Related Report
      2023 Annual Research Report
    • Open Access
  • [Journal Article] Draft Genome Sequence of the Aerobic Anoxygenic Phototrophic Bacterium <i>Roseobacter</i> sp. Strain OBYS 0001, Isolated from Coastal Seawater in Otsuchi Bay, Japan2021

    • Author(s)
      Sato-Takabe Yuki、Nakajima Yu、Tsukamoto Yuya、Hamasaki Koji、Shiozaki Takuhei
    • Journal Title

      Microbiology Resource Announcements

      Volume: 10 Issue: 28 Pages: 1-2

    • DOI

      10.1128/mra.00488-21

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Draft Genome Sequences of Putative Aerobic Anoxygenic Phototrophic Bacterial Strains <i>Jannaschia</i> sp. Strains AI_61 and AI_62, Isolated from Seawater around a Coastal Aquaculture Area2021

    • Author(s)
      Sato-Takabe Yuki、Nakajima Yu、Suzuki Satoru、Sekiguchi Kota、Hanada Satoshi、Shiozaki Takuhei
    • Journal Title

      Microbiology Resource Announcements

      Volume: 10 Issue: 28 Pages: 1-2

    • DOI

      10.1128/mra.00491-21

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Contamination of antibiotics and sul and tet(M) genes in veterinary wastewater, river, and coastal sea in Thailand2021

    • Author(s)
      Suzuki Satoru、Ogo Mitsuko、Takada Hideshige、Seki Kanako、Mizukawa Kaoruko、Kadoya Aya、Yokokawa Taichi、Sugimoto Yuta、Sato-Takabe Yuki、Boonla Chanchai、Anomasiri Wilai、Sukpanyatham Nop
    • Journal Title

      Science of The Total Environment

      Volume: 791 Pages: 148423-148423

    • DOI

      10.1016/j.scitotenv.2021.148423

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] 海洋における好気性光合成細菌のカロテノイドの生理生態学的意義2023

    • Author(s)
      高部由季 新藤一敏
    • Organizer
      第35回カロテノイド研究談話会
    • Related Report
      2023 Annual Research Report
  • [Presentation] 4-ketomyxolとmyxolの抗酸化活性の比較2023

    • Author(s)
      関根梨夏 翠川友香 高部由季 眞岡孝至 高谷直己 細川雅史 新藤一敏
    • Organizer
      第35回カロテノイド研究談話会
    • Related Report
      2023 Annual Research Report
  • [Presentation] 卵生板鰓類トラザメの卵殻内菌叢解析と抗菌活性物質の探索2023

    • Author(s)
      高木亙 高部由季 多形恵美 増田絢美 徳永幸太郎 兵藤晋
    • Organizer
      第15回板鰓類研究会
    • Related Report
      2023 Annual Research Report
  • [Presentation] 水環境由来細菌への薬剤耐性遺伝子の接合伝達評価2021

    • Author(s)
      高山峻、鈴木聡、高部由季、門屋綾、佐野大輔
    • Organizer
      2021年度 日本水環境学会年会
    • Related Report
      2021 Research-status Report
  • [Remarks] 好気性光合成細菌のドラフトゲノム

    • URL

      http://ecosystem.aori.u-tokyo.ac.jp/microbiology-wp/category/publication/

    • Related Report
      2021 Research-status Report

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Published: 2021-04-28   Modified: 2025-01-30  

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