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Study on chlorophyll catabolites as new proxies understanding the ecology of algivorous protists in the ocean

Research Project

Project/Area Number 15H05607
Research Category

Grant-in-Aid for Young Scientists (A)

Allocation TypeSingle-year Grants
Research Field Ecology/Environment
Research InstitutionFukui University of Technology

Principal Investigator

Kashiyama Yuichiro  福井工業大学, 環境情報学部, 教授 (00611782)

Project Period (FY) 2015-04-01 – 2018-03-31
Project Status Completed (Fiscal Year 2017)
Budget Amount *help
¥23,530,000 (Direct Cost: ¥18,100,000、Indirect Cost: ¥5,430,000)
Fiscal Year 2017: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2016: ¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2015: ¥17,940,000 (Direct Cost: ¥13,800,000、Indirect Cost: ¥4,140,000)
KeywordsDivinylchlorophylls / cyclopheophorbide enol / picocyanobacteria / Prochlorococcus / protists / algivore / primary production / クロロフィル / 水圏環境 / プロティスト / プロクロロコッカス / 微細藻類 / CPE類(シクロエノール) / シクロフェオフォルバイドエノール / 光毒性 / 微生物間相互作用 / シクロエノール
Outline of Final Research Achievements

It is known that picocynobacteria Prochlorococcus spp. are highly dominant in the low to mid latitudal oligotrophic ocean; yet, importantly, because they are conspicuously minute coccoids down to < 0.6 μm in diameter, a classical paradigm on the marine food web is unlikely to be applied where phytoplankton would have to be grazed by multicellular filter-feeders. In the present study, I hypothesized that the direct consumers of those picoplanktons should be phagotrophic protists that thus supplies energy derived from the photosynthesis of those minute producers to larger organisms. We tested this hypothesis by particularly paying attention to catabolites of divinylchlorophylls, unique photosynthetic pigments of Prochlorococcus, that are expected to be generated by the predatory process of picocyanobacteria-feeding protists.

Report

(4 results)
  • 2017 Annual Research Report   Final Research Report ( PDF )
  • 2016 Annual Research Report
  • 2015 Annual Research Report
  • Research Products

    (23 results)

All 2018 2017 2016 2015

All Journal Article (2 results) (of which Peer Reviewed: 2 results,  Open Access: 1 results) Presentation (21 results) (of which Int'l Joint Research: 6 results,  Invited: 5 results)

  • [Journal Article] In vivo and in vitro preparation of divinyl-132,173-cyclopheophorbide-a enol2018

    • Author(s)
      Y. Kinoshita, M. Kayama, Y. Kashiyama, H. Tamiaki
    • Journal Title

      Bioorg. Med. Chem. Lett.

      Volume: 28 Issue: 6 Pages: 1090-1092

    • DOI

      10.1016/j.bmcl.2018.02.015

    • Related Report
      2017 Annual Research Report
    • Peer Reviewed
  • [Journal Article] クロロフィルを制した者が光環境を征した?光合成生物を「食べる」生き様の舞台裏2015

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

      光合成研究

      Volume: 25 Pages: 58-70

    • Related Report
      2015 Annual Research Report
    • Peer Reviewed / Open Access
  • [Presentation] Prochlorococcus捕食性プロティストの分子系統とクロロフィル分解代謝2018

    • Author(s)
      松田 知樹,四本木 彰良,加山 基,日高 清隆,瀬藤 聡,石川 輝,柏山 祐一郎
    • Organizer
      日本藻類学会第42回大会
    • Related Report
      2017 Annual Research Report
  • [Presentation] 外洋域におけるピコシアノバクテリア捕食性プロティストとそれらのクロロフィル代謝2017

    • Author(s)
      柏山祐一郎
    • Organizer
      日本藻類学会第41回大会
    • Place of Presentation
      高知大学
    • Year and Date
      2017-03-24
    • Related Report
      2016 Annual Research Report
  • [Presentation] 8-ビニル-13(2),17(3)-シクロフェオフォルバイド-aの合成とその電子吸収スペクトル2017

    • Author(s)
      木下雄介,柏山祐一郎,ほか
    • Organizer
      日本化学会第97春季年会
    • Place of Presentation
      慶應義塾大学 日吉キャンパス
    • Year and Date
      2017-03-16
    • Related Report
      2016 Annual Research Report
  • [Presentation] Predation of picocyanobacteria Prochlorococcus by pelagic nano-scaled protists and their catabolism on divinylchlorophylls2017

    • Author(s)
      Yuichiro Kashiyama, Akira Shihongi, Toshiki Matsuda, Kiyotaka Hidaka, Akira Ishikawa, Yusuke Kinoshita, Hitoshi Tamiaki
    • Organizer
      15th International Congress of Protistology
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research
  • [Presentation] ナノ鞭毛虫/アメーバによるピコシアノバクテリアProchlorococcus の捕食とそれに伴うジビニルクロロフィル類の無毒化代謝2017

    • Author(s)
      柏山祐一郎,松田知樹,四本木彰良,加山基,木下雄介,日高清隆,石川輝,民秋均
    • Organizer
      環境微生物系学会合同大会2017
    • Related Report
      2017 Annual Research Report
  • [Presentation] 貧栄養海域におけるピコ藻類捕食性プロティストの単離培養および分子系統解析2017

    • Author(s)
      加山基,四本木彰良,松田知樹,日高清隆,石川輝,柏山祐一郎
    • Organizer
      環境微生物系学会合同大会2017
    • Related Report
      2017 Annual Research Report
  • [Presentation] 光毒性物質クロロフィル類の代謝分解から考える水圏微生物の生態と進化2016

    • Author(s)
      柏山祐一郎
    • Organizer
      遺伝研研究会「水圏微生物のエネルギー利用戦略とその相互作用に関する研究会」
    • Place of Presentation
      国立遺伝学研究所
    • Year and Date
      2016-11-03
    • Related Report
      2016 Annual Research Report
    • Invited
  • [Presentation] 真核生物に広く共有されるクロロフィル無毒化代謝機構とその藻類進化との関わり2016

    • Author(s)
      柏山祐一郎
    • Organizer
      日本植物学会第80回沖縄大会
    • Place of Presentation
      沖縄コンベンションセンター
    • Year and Date
      2016-09-16
    • Related Report
      2016 Annual Research Report
    • Invited
  • [Presentation] Managing the phototoxicity of chlorophylls: a basic study: On a key metabolism responsible for the mass culture crush2016

    • Author(s)
      Yuichiro Kashiyama
    • Organizer
      11th International Marine Biotechnology Conference
    • Place of Presentation
      Baltimore, USA
    • Year and Date
      2016-08-29
    • Related Report
      2016 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] クロロフィルを制する者が光環境を征した - クロロフィルの分解代謝と二次植物の進化2016

    • Author(s)
      柏山祐一郎
    • Organizer
      日本進化学会第18回東京大会
    • Place of Presentation
      東京工業大学
    • Year and Date
      2016-08-25
    • Related Report
      2016 Annual Research Report
    • Invited
  • [Presentation] Pelagic protists feeding on pico-cyanobacteria and their chlorophyll catabolisms2016

    • Author(s)
      Shihongi A., Kashiyama Y., et al.
    • Organizer
      Annual meeting of the International Society of Protistologists (The MOSCOW FORUM "PROTIST 2016")
    • Place of Presentation
      Lomonosov Moscow State University, Russia
    • Year and Date
      2016-06-06
    • Related Report
      2016 Annual Research Report
    • Int'l Joint Research
  • [Presentation] ピコプランクトンProchlorococcus marinusのプロティストによる「被食」指標としての3,8-divinyl-13(2),17(3)-cyclopheophorbide a enol2016

    • Author(s)
      四本木彰良,柏山祐一郎,ほか
    • Organizer
      第7回日本光合成学会及び公開シンポジウム
    • Place of Presentation
      東京理科大学葛飾キャンパス
    • Year and Date
      2016-05-27
    • Related Report
      2016 Annual Research Report
  • [Presentation] 二次植物ユーグレナが色素体を処分するとき2016

    • Author(s)
      柏山祐一郎,川原純,丸山萌,中澤昌美,石川孝博,民秋均,洲崎敏伸
    • Organizer
      日本藻類学会第40回大会
    • Place of Presentation
      千代田区
    • Year and Date
      2016-03-19
    • Related Report
      2015 Annual Research Report
  • [Presentation] 藻食性プロティストにおけるクロロフィル分解代謝機構解明に向けた可視化アプローチ2016

    • Author(s)
      横山亜紀子,丸山萌,柏山 祐一郎
    • Organizer
      日本藻類学会第40回大会
    • Place of Presentation
      千代田区
    • Year and Date
      2016-03-19
    • Related Report
      2015 Annual Research Report
  • [Presentation] 混合栄養藻類Rapaza viridisの食胞内におけるTetraselmis sp.の葉緑体分裂機構2016

    • Author(s)
      丸山萌,宮城島進也,洲崎敏伸,柏山祐一郎
    • Organizer
      日本藻類学会第40回大会
    • Place of Presentation
      千代田区
    • Year and Date
      2016-03-19
    • Related Report
      2015 Annual Research Report
  • [Presentation] 外洋表層水から分離されたピコ藻類を捕食する無色プロティストとそれらのクロロフィル代謝2016

    • Author(s)
      四本木彰良,柏山祐一郎,近藤竜二,野牧秀隆,石川輝
    • Organizer
      日本藻類学会第40回大会
    • Place of Presentation
      千代田区
    • Year and Date
      2016-03-19
    • Related Report
      2015 Annual Research Report
  • [Presentation] 真核生物の繁栄を可能たらしめたクロロフィルの無毒化代謝2016

    • Author(s)
      柏山祐一郎
    • Organizer
      第49回 日本原生生物学会 岡山大会 原生生物若手の会
    • Place of Presentation
      岡山大学
    • Related Report
      2016 Annual Research Report
    • Invited
  • [Presentation] Inhibiting growth of contaminated phycophagic protists in algal cultures by controlling the phototoxicity of chlorophylls2015

    • Author(s)
      Y. Kashiyama, J. Kawahara, M. Nakazawa, T. Ishikawa, T. Tanaka, T. Yoshino, H. Tamiaki
    • Organizer
      2015 International Chemical Congress of Pacific Basin Societies
    • Place of Presentation
      Honolulu, USA
    • Year and Date
      2015-12-15
    • Related Report
      2015 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Detoxicification catabolism of chlorophylls among a secondary plant Euglenophyceae: Physiology and biochemical processes2015

    • Author(s)
      J. Kawahara, M. Maruyama, Y. Kashiyama, T. Suzaki, A. Yokoyama, M. Nakazawa, T. Ishikawa, H. Tamiaki
    • Organizer
      2015 International Chemical Congress of Pacific Basin Societies
    • Place of Presentation
      Honolulu, USA
    • Year and Date
      2015-12-15
    • Related Report
      2015 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Chlorophyll catabolism generating cyclopheophorbide enols generated by autotrophic and heterotrophic euglenoids2015

    • Author(s)
      Y. Kashiyama, J. Kawahara, M. Maruyama, T. Suzaki, M. Nakazawa, T. Ishikawa, A. Yamaguchi, A. Yabuki, A. Uzuka, S. Miyagishima, T. Shiratori, A. Kawaguchi, A. Yokoyama, H. Tamiaki
    • Organizer
      VII European Congress of Protistology
    • Place of Presentation
      Seville, Spain
    • Year and Date
      2015-09-05
    • Related Report
      2015 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 13(2),17(3)-Cyclopheophorbide d enol: 海洋におけるChlorophyll d 生物による遠赤色光合成からピコ藻類食プロティストを介した生態系へのエネルギーフローの可能性2015

    • Author(s)
      柏山祐一郎,菅久美,四本木彰良,土屋正史,近藤竜二,野牧秀隆
    • Organizer
      第6回日本光合成学会年会
    • Place of Presentation
      岡山市
    • Year and Date
      2015-05-22
    • Related Report
      2015 Annual Research Report

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Published: 2015-04-16   Modified: 2019-03-29  

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