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Adaptation strategy in photosynthetic organisms to ambient light condition in Antarctica

Research Project

Project/Area Number 17K19431
Research Category

Grant-in-Aid for Challenging Research (Exploratory)

Allocation TypeMulti-year Fund
Research Field Ecology and Evolution (including anthropology), and related fields
Research InstitutionCenter for Novel Science Initatives, National Institutes of Natural Sciences (2019)
Chuo University (2017-2018)

Principal Investigator

Kosugi Makiko  大学共同利用機関法人自然科学研究機構(新分野創成センター、アストロバイオロジーセンター、生命創成探究, アストロバイオロジーセンター, 特任研究員 (00612326)

Co-Investigator(Kenkyū-buntansha) 原 光二郎  秋田県立大学, 生物資源科学部, 准教授 (10325938)
Project Period (FY) 2017-06-30 – 2020-03-31
Project Status Completed (Fiscal Year 2019)
Budget Amount *help
¥6,500,000 (Direct Cost: ¥5,000,000、Indirect Cost: ¥1,500,000)
Fiscal Year 2018: ¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2017: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
Keywords光合成 / 極域科学 / 適応戦略 / 近赤外線 / 緑藻 / 励起エネルギー移動 / 南極 / 環境ストレス応答 / 気生藻 / 乾燥耐性 / 生理生態 / 極域 / 光応答 / 植物生理学 / 生理生態学 / ストレス応答 / 多様性進化
Outline of Final Research Achievements

We performed physiological experiments and micro-meteorological observation analysis to reveal the novel light response process in Prasiola crispa which is a dominant species of green algae in terrestrial condition of Antarctica. We identified the light-harvesting-chlorophyll-binding-protein, LHC710, as a novel red-shifted chlorophylls binding protein, and assigned the amino acid sequence and clarified the spectroscopic features. The LHC710 enables to utilize of far-red light energy to charge separation in photosystem II (PSII) and to perform a series of photosynthesis inside colony where visible light is limited rather than far-red light.

Academic Significance and Societal Importance of the Research Achievements

過酷な環境に生きる生物の適応戦略を明らかにすることは、地球上に成り立つ生命現象の柔軟性と限界を理解する上で重要である。本課題で明らかになった近赤外線利用の光合成メカニズムは可視光より低いエネルギーで酸素発生型光合成を駆動できることから、真核の光合成生物ではこれまでに知られていない新しい励起エネルギー移動反応を含む可能性がある。近赤外線吸収を担うタンパク質の同定と構造解析により、光合成色素間の量子化学的反応の詳細に迫る足掛かりを作ることができた。応用面では、可視光が少なく近赤外線が卓越する林床やバイオリアクターにおける光合成生産への利用が期待される。

Report

(4 results)
  • 2019 Annual Research Report   Final Research Report ( PDF )
  • 2018 Research-status Report
  • 2017 Research-status Report
  • Research Products

    (9 results)

All 2020 2019 2018

All Journal Article (3 results) (of which Peer Reviewed: 3 results,  Open Access: 3 results) Presentation (6 results) (of which Int'l Joint Research: 2 results,  Invited: 2 results)

  • [Journal Article] Red-shifted chlorophyll a bands allow uphill energy transfer to photosystem II reaction centers in an aerial green alga, Prasiola crispa, harvested in Antarctica2020

    • Author(s)
      Kosugi Makiko、Ozawa Shin-Ichiro、Takahashi Yuichiro、Kamei Yasuhiro、Itoh Shigeru、Kudoh Sakae、Kashino Yasuhiro、Koike Hiroyuki
    • Journal Title

      Biochimica et Biophysica Acta (BBA) - Bioenergetics

      Volume: 1861 Issue: 2 Pages: 148139-148139

    • DOI

      10.1016/j.bbabio.2019.148139

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] ナンキョクカワノリの極域における光合成適応戦略2020

    • Author(s)
      小杉真貴子、伊藤美空、小池裕幸
    • Journal Title

      光合成研究

      Volume: 30 Pages: 19-25

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] 南極の陸生光合成生物における光化学系IIの光不活性化波長依存性と生育環境における光阻害の潜在的リスク2019

    • Author(s)
      小杉真貴子、小池裕幸
    • Journal Title

      光合成研究

      Volume: 29 Pages: 29-38

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access
  • [Presentation] 極域光合成生物の適応戦略とその多様性2020

    • Author(s)
      小杉真貴子
    • Organizer
      次世代科学社会応援シンポジウム2020・生態工学サロン合同大会
    • Related Report
      2019 Annual Research Report
  • [Presentation] 極域光合成生物の光獲得と防御をめぐる適応戦略とその多様性2019

    • Author(s)
      小杉真貴子
    • Organizer
      第10回日本光合成学会年会シンポジウム
    • Related Report
      2019 Annual Research Report 2018 Research-status Report
    • Invited
  • [Presentation] 極地のストレス環境下での光合成生物の適応戦略2019

    • Author(s)
      小杉真貴子
    • Organizer
      令和元年アストロバイオロジーセンターシンポジウム
    • Related Report
      2019 Annual Research Report
    • Invited
  • [Presentation] Characterization and identification of the red-shifted chlorophyll binding protein of a terrestrial green alga, Prasiola crispa harvested in Antarctica2018

    • Author(s)
      Makiko Kosugi
    • Organizer
      International Conference on Microbial Photosynthesis
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research
  • [Presentation] An Antarctic terrestrial green alga, Prasiolacrispa, has an unique red-shifted chlorophyll binding protein which permits large uphill energy transfer2018

    • Author(s)
      Makiko Kosugi, Shin-ichiro Ozawa, Rika Okamoto, YurieKubo, MitsuoIwadate, Yasuhiro Kamei, Sakae Kudoh, Yasuhiro Kashino, YuichiroTakahashi, Shigeru Itoh, Kojiro Hara and Hiroyuki Koike
    • Organizer
      The Ninth Symposium on Polar Science
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research
  • [Presentation] 南極に生育する緑藻,Prasiola crispaに見られる顕著な長波長シフトクロロフィルの生理学的解析2018

    • Author(s)
      小杉真貴子,小澤真一郎,伊藤美空,亀井保博,菓子野康浩,高橋裕一郎,伊藤繁,小池祐幸
    • Organizer
      第59回日本植物生理学会年会
    • Related Report
      2017 Research-status Report

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Published: 2017-07-21   Modified: 2021-02-19  

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