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Understanding of biochemistry of chlorophyll c to shed light on evolution of marine primary production over the Phanerozoic Eon

Research Project

Project/Area Number 18H03743
Research Category

Grant-in-Aid for Scientific Research (A)

Allocation TypeSingle-year Grants
Section一般
Review Section Medium-sized Section 17:Earth and planetary science and related fields
Research InstitutionFukui University of Technology

Principal Investigator

Kashiyama Yuichiro  福井工業大学, 環境学部, 教授 (00611782)

Co-Investigator(Kenkyū-buntansha) 原田 二朗  久留米大学, 医学部, 講師 (10373094)
塚谷 祐介  国立研究開発法人海洋研究開発機構, 超先鋭研究開発部門(超先鋭研究開発プログラム), 副主任研究員 (10421843)
神川 龍馬  京都大学, 農学研究科, 准教授 (40627634)
力石 嘉人  北海道大学, 低温科学研究所, 教授 (50455490)
木下 雄介  北海道大学, 化学反応創成研究拠点, 特任助教 (50792363)
谷藤 吾朗  独立行政法人国立科学博物館, 動物研究部, 研究主幹 (70438480)
伊庭 靖弘  北海道大学, 理学研究院, 准教授 (80610451)
Project Period (FY) 2018-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥44,070,000 (Direct Cost: ¥33,900,000、Indirect Cost: ¥10,170,000)
Fiscal Year 2022: ¥7,020,000 (Direct Cost: ¥5,400,000、Indirect Cost: ¥1,620,000)
Fiscal Year 2021: ¥7,540,000 (Direct Cost: ¥5,800,000、Indirect Cost: ¥1,740,000)
Fiscal Year 2020: ¥7,540,000 (Direct Cost: ¥5,800,000、Indirect Cost: ¥1,740,000)
Fiscal Year 2019: ¥9,750,000 (Direct Cost: ¥7,500,000、Indirect Cost: ¥2,250,000)
Fiscal Year 2018: ¥12,220,000 (Direct Cost: ¥9,400,000、Indirect Cost: ¥2,820,000)
Keywordsクロロフィル生合成 / CPE代謝 / CACC / ゲノム編集 / クロロフィルcの生合成 / クロロフィルの分解代謝 / 微細藻類捕食性プロティスト / 紅色植物起源の二次葉緑体 / 分子時計 / 二次植物の進化 / 海洋の基礎生産 / クロロフィルの生合成 / 藻類の化石記録 / 藻類捕食者の進化 / 海洋の光合成基礎生産 / 紅藻系二次植物の進化 / クロロフィルc
Outline of Final Research Achievements

The aim of this study was to clarify the evolutionary processes of various photosynthetic organisms in the aquatic environment, based on the diverse biochemical mechanisms involved in the biosynthesis and degradation of chlorophyll. First, we searched for candidate genes for four types of redox enzymes that are not yet understood in the chlorophyll biosynthesis pathway of secondary plant diatoms that contain chlorophyll c, and attempted to verify their functions using a complementation experiment system with purple bacteria. In addition, we verified the functions of chlorophyll-related genes in secondary plant Euglena containing chlorophyll b using genome editing, and clarified the changes in function associated with horizontal gene transfer. Furthermore, we discovered genes that are common to various protists that are thought to be related to CPE metabolism, which degrades chlorophyll, and verified their functions using knockout experiments.

Academic Significance and Societal Importance of the Research Achievements

地球生命圏では,多様なクロロフィル類が光合成に必須の因子として生合成される一方,その光毒性ゆえに食物連鎖の最初期の段階で分解されている。しかし,このような色素代謝の生化学的な詳細は未解明な点も多い。一方で,色素の多様性を遺伝的な多様性とリンクさせて理解することができれば,地質記録に見いだされるクロロフィル起源分子化石に基づいて,過去の生命活動を復元することも可能になる。本研究では,現在の海洋における光合成基礎生産の主役になっている二次植物プランクトンのクロロフィル生合成と,同じく海洋の一次捕食者として重要な単細胞性動物プランクトンのクロロフィル分解の代謝メカニズムを解明した。

Report

(5 results)
  • 2023 Final Research Report ( PDF )
  • 2021 Annual Research Report
  • 2020 Annual Research Report
  • 2019 Annual Research Report
  • 2018 Annual Research Report
  • Research Products

    (18 results)

All 2022 2021 2020 2019 2018 Other

All Int'l Joint Research (2 results) Journal Article (3 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 3 results,  Open Access: 2 results) Presentation (12 results) (of which Int'l Joint Research: 6 results,  Invited: 3 results) Remarks (1 results)

  • [Int'l Joint Research] University of Saskatchewan(カナダ)

    • Related Report
      2019 Annual Research Report
  • [Int'l Joint Research] University of Rhode Island(米国)

    • Related Report
      2019 Annual Research Report
  • [Journal Article] NADPH‐to‐NADH conversion by mitochondrial transhydrogenase is indispensable for sustaining anaerobic metabolism in Euglena gracilis2021

    • Author(s)
      Masami Nakazawa; Mutsuki Takahashi; Ryuta Hayashi; Yuki Matsubara; Yuichiro Kashiyama; Mitsuhiro Ueda; Hiroshi Inui; Tatsuji Sakamoto
    • Journal Title

      FEBS Letters

      Volume: 595 Issue: 23 Pages: 2922-2930

    • DOI

      10.1002/1873-3468.14221

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Engineered chlorophyll catabolism conferring predator resistance for microalgal biomass production2021

    • Author(s)
      Kashiyama Yuichiro、Ishizuka Yuki、Terauchi Issei、Matsuda Toshiki、Maeda Yoshiaki、Yoshino Tomoko、Matsumoto Mitsufumi、Yabuki Akinori、Bowler Chris、Tanaka Tsuyoshi
    • Journal Title

      Metabolic Engineering

      Volume: 66 Pages: 79-86

    • DOI

      10.1016/j.ymben.2021.03.018

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] A non-photosynthetic green alga illuminates the reductive evolution of plastid electron transport systems2020

    • Author(s)
      Kayama Motoki、Chen Jun-Feng、Nakada Takashi、Nishimura Yoshiki、Shikanai Toshiharu、Azuma Tomonori、Miyashita Hideaki、Takaichi Shinichi、Kashiyama Yuichiro、Kamikawa Ryoma
    • Journal Title

      BMC Biology

      Volume: 18 Issue: 1 Pages: 1-15

    • DOI

      10.1186/s12915-020-00853-w

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access
  • [Presentation] ラパザの盗葉緑体を制御するHGT起源タンパク質群2022

    • Author(s)
      柏山祐一郎,丸山萌
    • Organizer
      盗機能生物研究会
    • Related Report
      2021 Annual Research Report
    • Invited
  • [Presentation] How to digest delicious diatoms containing the phototoxic chlorophyll2021

    • Author(s)
      Yuichiro Kashiyama
    • Organizer
      The Molecular Life of Diatoms 6
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] 光合成産物を安心して収奪するために~捕食と共生の狭間~2021

    • Author(s)
      柏山祐一郎,丸山萌
    • Organizer
      日本植物学会 第85回大会
    • Related Report
      2021 Annual Research Report
  • [Presentation] The detoxification catabolism of chlorophylls that allowed protists to prosper on the oxygenated earth2020

    • Author(s)
      Yuichiro Kashiyama
    • Organizer
      JSP/KSOP Joint Online Meeting
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Evolution of chlorophyll biosynthesis pathway in a colorless diatom2019

    • Author(s)
      Motoki Kayama, Mami Nomura, Minami Goto, Akinori Yabuki, Hideaki Miyashita, Shigeki Mayama, Yuichiro Kashiyama, Ryoma Kamikawa
    • Organizer
      7th European Phycological Congress
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Suppression of grazers of the marine diatom Fistulifera solaris by enhancement of chlorophyllase activity2019

    • Author(s)
      Issei Terauchi, Yuichiro Kashiyama, Yuki Ishizuka, Yoshiaki Maeda, Tomoko Yoshino, Mitsufumi Matsumoto, Tsuyoshi Tanaka
    • Organizer
      5th Molecular Life of Diatoms
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Taming Chlorophylls Allowed Eukaryotes to Prosper on the Oxygenated Earth2019

    • Author(s)
      Yuichiro Kashiyama
    • Organizer
      11th Asian Symposium of Microbial Ecology
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 盗葉緑体を能動的に搾取するRapaza viridisの分子メカニズム2019

    • Author(s)
      丸山萌,大沼亮,宮城島進也,洲崎敏伸,柏山祐一郎
    • Organizer
      日本植物学会第83回大会
    • Related Report
      2019 Annual Research Report
  • [Presentation] ユーグレノイドRapaza viridisによる盗葉緑体の獲得と成熟プロセス2019

    • Author(s)
      丸山萌,洲崎敏伸,粟井光一郎,大沼亮,宮城島進也,柏山祐一郎
    • Organizer
      日本植物学会第83回大会
    • Related Report
      2019 Annual Research Report
  • [Presentation] Role of a pan-eukaryotic chlorophyll catabolism during the late Proterozoic global oxygenation: a hypothesis2018

    • Author(s)
      Yuichiro Kashiyama
    • Organizer
      日本地球惑星科学連合2018年大会
    • Related Report
      2018 Annual Research Report
  • [Presentation] 柏山祐一郎,丸山萌,柴田栞里,粟井光一郎,中澤昌美,石川孝博2018

    • Author(s)
      ユーグレナの二次葉緑体におけるCAO遺伝のノックダウン
    • Organizer
      日本光合成学会第9回年会およびシンポジウム
    • Related Report
      2018 Annual Research Report
  • [Presentation] The chlorophyll cycle and antenna proteins in secondary chloroplasts of Euglena gracilis2018

    • Author(s)
      Yuichiro Kashiyama, Moe Maruyama, Shiori Shibata, Koichiro Awai, Masami Nakazawa, and Takahiro Ishikawa
    • Organizer
      Phycological Society of America and the International Society of Protistologists Conference 2018
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Remarks] 研究ブログ:真核生物に普遍的なクロロフィルの無毒化代謝

    • URL

      https://researchmap.jp/ykas8787/%E7%A0%94%E7%A9%B6%E3%83%96%E3%83%AD%E3%82%B0

    • Related Report
      2020 Annual Research Report

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Published: 2018-04-23   Modified: 2025-01-30  

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