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Elucidation of catabolic processes of chlorophylls in marine and lacustrine environments

Research Project

Project/Area Number 23870028
Research Category

Grant-in-Aid for Research Activity start-up

Allocation TypeSingle-year Grants
Research Field Ecology/Environment
Research InstitutionRitsumeikan University

Principal Investigator

KASHIYAMA Yuichiro  立命館大学, 立命館ク゛ローハ゛ル・イノヘ゛ーション研究 機構, ホ゜ストト゛クトラルフェロー (00611782)

Project Period (FY) 2011 – 2012
Project Status Completed (Fiscal Year 2012)
Budget Amount *help
¥3,250,000 (Direct Cost: ¥2,500,000、Indirect Cost: ¥750,000)
Fiscal Year 2012: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2011: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Keywordsクロロフィル / 水圏環境 / プロティスト / 微細藻類 / 光毒性 / シクロエノール / シクロフェオフォルバイドエノール / 水圏生態系 / 従属栄養過程 / 一重項酸素 / 代謝・分解 / 植食性プロティスト / 原生動物
Research Abstract

Chlorophylls are essential biomolecules for photosynthesis yet also phototoxic to generate singlet oxygen, a highly toxic reactive oxygen for organisms. The present research elucidated that aquatic protists feeding on microalgae degradate chlorophylls into detoxified catabolites “cyclo-enols”. This cyclo-enol catabolism is common among diverse groups of protists and also ubiquitously generated in any aquatic environments, suggesting significant contributions of such protists in aquatic material and energy flows. The catabolism has also been critical for the endosymbiotic evolutionary processes of algae.

Report

(3 results)
  • 2012 Annual Research Report   Final Research Report ( PDF )
  • 2011 Annual Research Report

Research Products

(29 results)

All 2013 2012 2011 Other

All Journal Article Presentation Remarks

  • [Journal Article] 藻類食プロティストが関与するクロロフィルの「解毒」代謝2013

    • Author(s)
      横山亜紀子
    • Journal Title

      藻類

      Volume: 61 Pages: 6-10

    • Related Report
      2012 Annual Research Report
  • [Journal Article] Ubiquity and quantitative significance of detoxification catabolism of chlorophyll associated with protistan herbivory.2012

    • Author(s)
      Kashiyama Y.*, Yokoyama A.*, Kinoshita Y., Shoji S., Miyashita H., Shiratori T.,Suga H., Ishikawa K., Ishikawa A.,Ishikawa A., Inouye I., Ishida K.,Fujinuma D., Aoki K., Kobayashi M.,Nomoto S., Mizoguchi T., Tamiaki H.
    • Journal Title

      Proceedings of National Academy of Sciences of the United States of America

      Volume: Vol.109 Pages: 17328-17335

    • Related Report
      2012 Final Research Report
    • Peer Reviewed
  • [Journal Article] Feature Article: Ubiquity and quantitative significance of detoxification catabolism of chlorophyll associated with protistan herbivory2012

    • Author(s)
      Y Kashiyam, A Yokoyama, Y Kinoshita, S Shoji, H Miyashita, T Shiratori, H Suga, K Ishikawa, A Ishikawa, I Inouye, K Ishida, D Fujinuma, K Aoki, M Kobayashi, S Nomoto, T Mizoguchi, H Tamiaki
    • Journal Title

      Proc Natl Acad Sci U S A

      Volume: 109 Pages: 17328-17335

    • DOI
      10.1073/pnas.1207347109
    • Related Report
      2012 Annual Research Report
    • Peer Reviewed
  • [Journal Article] 光エネルギーと従属栄養プロティスト-クロロフィル光毒性に対する生化学的戦略2012

    • Author(s)
      柏山祐一郎
    • Journal Title

      生物の科学 遺伝

      Volume: 7月号 Pages: 425-431

    • Related Report
      2012 Annual Research Report
  • [Journal Article] 光エネルギーと従属栄養プロティストークロロフィル光毒性に対する生化学的戦略2012

    • Author(s)
      柏山祐一郎, 横山亜紀子
    • Journal Title

      生物の科学遺伝

      Volume: 7月号(印刷中)

    • Related Report
      2011 Annual Research Report
  • [Journal Article] 132,173-Cyclopheophorbide b enol as a catabolite of chlorophyll b inphycophagy by protists.

    • Author(s)
      Kashiyama Y., Yokoyama A., Shiratori T., Inouye I., Mizoguchi T., Tamiaki H.
    • Journal Title

      FEBS Letters

      Volume: (審査中)

    • Related Report
      2012 Final Research Report
    • Peer Reviewed
  • [Presentation] 色素体獲得を可能にしたユーグレノイドによるクロロフィルの解毒代謝分解2013

    • Author(s)
      柏山祐一郎
    • Organizer
      日本藻類学会第37回大会
    • Place of Presentation
      山梨大学(山梨県)
    • Year and Date
      2013-03-28
    • Related Report
      2012 Final Research Report
  • [Presentation] Chlorophyll catabolism in aquatic ecosystems: Physiology, ecology, and evolution2013

    • Author(s)
      Y. Kashiyama
    • Organizer
      CER International workshop on Biogeochemical cycling and Microbial Ecology for Young Scientists
    • Place of Presentation
      京都大学生態研究センター(滋賀県)
    • Year and Date
      2013-03-19
    • Related Report
      2012 Final Research Report
  • [Presentation] Detoxification catabolism of chlorophyll associated with protistan herbivory in aquatic ecosystems2012

    • Author(s)
      Y. Kashiyama
    • Organizer
      2nd International Symposium on Biosynthesis of Tetrapyrroles
    • Place of Presentation
      立命館大学(滋賀県)
    • Year and Date
      2012-12-01
    • Related Report
      2012 Final Research Report
  • [Presentation] Ecological significance of chlorophyll metabolism of herbivorous protists in aquatic ecosystems2012

    • Author(s)
      Y. Kashiyama
    • Organizer
      Protist2012
    • Place of Presentation
      Oslo (Norway)
    • Year and Date
      2012-08-01
    • Related Report
      2012 Final Research Report
  • [Presentation] 微細藻類捕食プロティストによるクロロフィルの解毒代謝2012

    • Author(s)
      柏山祐一郎
    • Organizer
      日本藻類学会第36回大会
    • Place of Presentation
      北海道大学(北海道)
    • Year and Date
      2012-07-13
    • Related Report
      2012 Final Research Report
  • [Presentation] Occurrence and distribution of chlorophyll catabolites in aquatic environments2012

    • Author(s)
      Y. Kashiyama
    • Organizer
      2012 ASLO Aquatic Sciences Meeting
    • Place of Presentation
      びわ湖ホール(滋賀県)
    • Year and Date
      2012-07-11
    • Related Report
      2012 Final Research Report
  • [Presentation] A non-fluorescent/non-photosensitizing chlorophyll metabolites of herbivorous protists in aquatic ecosystems2012

    • Author(s)
      Y. Kashiyama
    • Organizer
      8th International Workshop on Supramolecular Nanoscience of Chemically Programmed Pigments
    • Place of Presentation
      立命館大学(滋賀県)
    • Year and Date
      2012-06-23
    • Related Report
      2012 Final Research Report
  • [Presentation] 光毒性クロロフィルを摂取するための生化学的進化戦略2012

    • Author(s)
      柏山祐一郎
    • Organizer
      日本地球惑星科学連合 2012 年大会
    • Place of Presentation
      幕張メッセ(千葉県)
    • Year and Date
      2012-05-20
    • Related Report
      2012 Final Research Report
  • [Presentation] 水圏生態系におけるクロロフィルの代謝2011

    • Author(s)
      柏山祐一郎, ら
    • Organizer
      日本微生物生態学会第27回大会
    • Place of Presentation
      京都大学,京都府
    • Year and Date
      2011-10-08
    • Related Report
      2011 Annual Research Report
  • [Presentation] 水圏生態系におけるクロロフィルの代謝2011

    • Author(s)
      柏山祐一郎
    • Organizer
      日本微生物生態学会第27回大会
    • Place of Presentation
      京都大学(京都府)
    • Related Report
      2012 Final Research Report
  • [Presentation] 光毒性クロロフィルを摂取するための生化学的進化戦略

    • Author(s)
      柏山祐一郎
    • Organizer
      日本地球惑星科学連合2012年大会
    • Place of Presentation
      幕張メッセ(千葉県)
    • Related Report
      2012 Annual Research Report
  • [Presentation] A non-fluorescent/non-photosensitizing chlorophyll metabolites of herbivorous protists in aquatic ecosystems

    • Author(s)
      Yuichiro Kashiyama
    • Organizer
      8th International Workshop on Supramolecular Nanoscience of Chemically Programmed Pigments
    • Place of Presentation
      立命館大学(滋賀県)
    • Related Report
      2012 Annual Research Report
  • [Presentation] Occurrence and distribution of chlorophyll catabolites in aquatic environments

    • Author(s)
      Yuichiro Kashiyama
    • Organizer
      2012 ASLO Aquatic Sciences Meeting
    • Place of Presentation
      びわ湖ホール(滋賀県)
    • Related Report
      2012 Annual Research Report
  • [Presentation] 微細藻類捕食プロティストによるクロロフィルの解毒代謝

    • Author(s)
      柏山祐一郎
    • Organizer
      日本藻類学会第36回大会
    • Place of Presentation
      北海道大学(北海道)
    • Related Report
      2012 Annual Research Report
  • [Presentation] Evolutionary significance of chlorophyll metabolisms of herbivorous protists in aquatic ecosystems

    • Author(s)
      Yuichiro Kashiyama
    • Organizer
      Protist2012
    • Place of Presentation
      Oslo (Norway)
    • Related Report
      2012 Annual Research Report
  • [Presentation] Ecological significance of chlorophyll metabolism of herbivorous protists in aquatic ecosystems

    • Author(s)
      Yuichiro Kashiyama
    • Organizer
      Protist2012
    • Place of Presentation
      Oslo (Norway)
    • Related Report
      2012 Annual Research Report
  • [Presentation] Detoxification catabolism of chlorophyll associated with protistan herbivory in aquatic ecosystems

    • Author(s)
      Yuichiro Kashiyama
    • Organizer
      2nd International Symposium on Biosynthesis of Tetrapyrroles
    • Place of Presentation
      立命館大学(滋賀県)
    • Related Report
      2012 Annual Research Report
  • [Presentation] Chlorophyll catabolism in aquatic ecosystems: Physiology, ecology, and evolution

    • Author(s)
      Yuichiro Kashiyama
    • Organizer
      CER International workshop on Biogeochemical cycling and Microbial Ecology for Young Scientists
    • Place of Presentation
      京都大学生態研究センター(滋賀県)
    • Related Report
      2012 Annual Research Report
    • Invited
  • [Presentation] 色素体獲得を可能にしたユーグレノイドによるクロロフィルの解毒代謝分解

    • Author(s)
      柏山祐一郎
    • Organizer
      日本藻類学会第37回大会
    • Place of Presentation
      山梨大学(山梨県)
    • Related Report
      2012 Annual Research Report
  • [Remarks] (1)世界で初めて水中の微生物がクロロフィル(葉緑素)の光毒性を無くす仕組みを発見、(2)立命館グローバル・イノベーション研究機構水中の微生物がクロロフィルの光毒性を無くす仕組みを発見

    • Related Report
      2012 Final Research Report
  • [Remarks] 世界で初めて水中の微生物がクロロフィル(葉緑素)の光毒性を無くす仕組みを発見

    • URL
      http://www.ritsumei.jp/topics_pdf/admin_31e79bc7e550c8e584b58c2efad01665_1346757212_.pdf
    • Related Report
      2012 Annual Research Report
  • [Remarks] 立命館グローバル・イノベーション研究機構 水中の微生物がクロロフィルの光毒性を無くす仕組みを発見

    • URL
      http://www.ritsumei.jp/news/detail_j/topics/11008/year/2012/publish/1
    • Related Report
      2012 Annual Research Report
  • [Remarks] 海洋・湖沼環境におけるクロロフィル色素の代謝プロセスの解明

    • URL
      http://bnei-amateras.com/homepage/chlorophyll-metabolism.html
    • Related Report
      2012 Annual Research Report

URL: 

Published: 2011-09-05   Modified: 2019-07-29  

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