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Cell biological study on the origin of male and female sex in eukaryotes

Research Project

Project/Area Number 15K14579
Research Category

Grant-in-Aid for Challenging Exploratory Research

Allocation TypeMulti-year Fund
Research Field Evolutionary biology
Research InstitutionUniversity of Tsukuba

Principal Investigator

Miyamura Shinichi  筑波大学, 生命環境系, 准教授 (00192766)

Project Period (FY) 2015-04-01 – 2019-03-31
Project Status Completed (Fiscal Year 2018)
Budget Amount *help
¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
Fiscal Year 2017: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2016: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2015: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
Keywords性 / 進化 / 配偶子 / 緑色植物 / 細胞構造
Outline of Final Research Achievements

In order to elucidate the origin and evolution of two sexes, male and female, which is found in many eukaryotes, we focused on the sex-specific arrangement of the cell fusion site of the gamete in chlorophyte algae and analyzed its molecular mechanism and ecological significance. As for the molecular mechanism, we tried to isolate mutants of green alga Chlamydomonas, but it was not possible to find a target mutant. Regarding ecological significance, as a result of the observations of the fine structure, flagellar movement, eye size of planozygotes and zoospores of marine green alga Chaetomorpha, it is suggested that sex-specific arrangement of the cell fusion site has evolved as a result of adaptation to the environment of the habitat.

Academic Significance and Societal Importance of the Research Achievements

多くの真核生物と同じ様にヒトもオスとメス、2つの性をもち、それが社会の基盤になっている。しかしながら、ヒトも含めたオスとメス、2つの性の起源と進化については不明な点が多い。本研究で明らかになった2つの性を区別する配偶子の細胞学的特徴とその生態学的な意義は、2つの性と起源についての手がかりを与える意義があると考えられる。

Report

(5 results)
  • 2018 Annual Research Report   Final Research Report ( PDF )
  • 2017 Research-status Report
  • 2016 Research-status Report
  • 2015 Research-status Report
  • Research Products

    (20 results)

All 2019 2018 2017 2016 2015 Other

All Journal Article (6 results) (of which Int'l Joint Research: 2 results,  Peer Reviewed: 6 results,  Open Access: 1 results,  Acknowledgement Compliant: 2 results) Presentation (13 results) Remarks (1 results)

  • [Journal Article] High-speed video analysis of the flagellar movement of isogametes during fertilization of the marine green macroalga, Chaetomorpha spirals (Ulvophyceae, Chlorophyta)2018

    • Author(s)
      Shinichi Miyamura, Mami Nomura, Fusako Mitsuhashi, Tamotsu Nagumo
    • Journal Title

      Cytologia

      Volume: 83 Pages: 109-114

    • Related Report
      2017 Research-status Report
    • Peer Reviewed
  • [Journal Article] Genomic structure and evolution of the mating type locus in the green seaweed Ulva partita2017

    • Author(s)
      Yamazaki Tomokazu、Ichihara Kensuke、Suzuki Ryogo、Oshima Kenshiro、Miyamura Shinichi、Kuwano Kazuyoshi、Toyoda Atsushi、Suzuki Yutaka、Sugano Sumio、Hattori Masahira、Kawano Shigeyuki
    • Journal Title

      Scientific Reports

      Volume: 7 Issue: 1 Pages: 11679-11679

    • DOI

      10.1038/s41598-017-11677-0

    • NAID

      120007134814

    • Related Report
      2017 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Mother cell wall cleavage during filament formation in Stichococcus bacillaris (Tebouxiophyceae, Chlorophyta)2016

    • Author(s)
      Yamamoto, M., Handa, S., Kawachi, M., Miyamura, S., Nagumo, T., Hirata, A and Kawano, S.
    • Journal Title

      Cytologia

      Volume: 81 Pages: 35-39

    • Related Report
      2016 Research-status Report
    • Peer Reviewed
  • [Journal Article] Effects of micro wet milling and vacuum spray drying on the physicochemical and antioxidant properties of orange (Citrus unshiu) juice with pulp powder2016

    • Author(s)
      Islam, M.Z., Kitamura, Y., Kokawa, M., Monakisa, K., Tsai, F-H. and Miyamura, S.
    • Journal Title

      Food and Bioproducts Processing

      Volume: 101 Pages: 132-144

    • DOI

      10.1016/j.fbp.2016.11.002

    • Related Report
      2016 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Mother Cell Wall Cleavage during Filament Formation in <i>Stichococcus bacillaris</i> (Trebouxiophyceae, Chlorophyta)2016

    • Author(s)
      Maki Yamamoto, Shinji Handa, Masanobu Kawachi, Shinichi Miyamura, Tamotsu Nagumo, Aiko Hirata and Sigeyuki Kawano
    • Journal Title

      CYTOLOGIA

      Volume: 81 Issue: 1 Pages: 35-39

    • DOI

      10.1508/cytologia.81.35

    • NAID

      130005143748

    • ISSN
      0011-4545, 1348-7019
    • Related Report
      2015 Research-status Report
    • Peer Reviewed / Int'l Joint Research / Acknowledgement Compliant
  • [Journal Article] Rearrangement of the flagellar apparatuses and eyespots of isogametes during the fertilization of the marine green alga, Monostroma nitidum (Ulvophyceae, Chlorophyta).2015

    • Author(s)
      Shinichi Miyamura
    • Journal Title

      Phycological Research

      Volume: 63 Issue: 4 Pages: 284-299

    • DOI

      10.1111/pre.12108

    • Related Report
      2015 Research-status Report
    • Peer Reviewed / Acknowledgement Compliant
  • [Presentation] 海産緑藻フトジュズモの動接合子と遊走子の鞭毛装置-眼点の配置と協調的鞭毛運動の解析2019

    • Author(s)
      宮村新一、野村真未、南雲 保、稲葉一男、河野重行
    • Organizer
      日本藻類学会第43回大会
    • Related Report
      2018 Annual Research Report
  • [Presentation] アオノリの雌雄性と接合初期から葉状体発達過程における雌雄オルガネラの排除と選択2018

    • Author(s)
      佐藤康太、市原健介、大田修平、山崎誠和、工藤恭子、宮村新一、平田愛子、河野重行
    • Organizer
      日本植物学会第82回大会
    • Related Report
      2018 Annual Research Report
  • [Presentation] 海産緑藻オオハネモの配偶子と動接合子における走光性行動の変化2018

    • Author(s)
      宮村新一
    • Organizer
      日本植物学会第82回大会
    • Related Report
      2018 Annual Research Report
  • [Presentation] 緑藻スジアオノリの雌雄配偶子と無性型二本鞭毛遊走子の微細構造比較2018

    • Author(s)
      市原健介、山崎誠和、宮村新一、河野重行、長里千香子、本村泰三
    • Organizer
      日本藻類学会第42回大会
    • Related Report
      2017 Research-status Report
  • [Presentation] アオノリ接合初期の細胞動態と葉状態発達過程における雌雄オルガネラの排除と選択2018

    • Author(s)
      佐藤康太、市原健介、大田修平、山崎誠和、工藤恭子、宮村新一、平田愛子、河野重行
    • Organizer
      日本藻類学会第42回大会
    • Related Report
      2017 Research-status Report
  • [Presentation] 海産緑藻フトジュズモの動接合子と遊走子における眼点と鞭毛の配列と同調的鞭毛運動2017

    • Author(s)
      宮村新一、南雲 保
    • Organizer
      日本藻類学会第41回大会
    • Place of Presentation
      高知大学朝倉キャンパス(高知県・高知市)
    • Year and Date
      2017-03-24
    • Related Report
      2016 Research-status Report
  • [Presentation] 緑藻アオノリ2種のゲノム解読と雌雄ゲノムの比較による性決定領域の解析2017

    • Author(s)
      市原健介、山崎誠和、宮村新一、桑野和可、河野重行
    • Organizer
      日本藻類学会第41回大会
    • Place of Presentation
      高知大学朝倉キャンパス(高知県・高知市)
    • Year and Date
      2017-03-24
    • Related Report
      2016 Research-status Report
  • [Presentation] 海産緑藻フトジュズモの動接合子、遊走子における眼点と鞭毛の配列と協調的鞭毛運動2017

    • Author(s)
      宮村新一、野村真未、南雲 保
    • Organizer
      植物学会第81回大会
    • Related Report
      2017 Research-status Report
  • [Presentation] アポミクシスはスジアオノリの適応戦略に影響するか?2016

    • Author(s)
      市原健介、山崎誠和、宮村新一、平岡雅規、河野重行
    • Organizer
      日本植物学会第80回大会
    • Place of Presentation
      沖縄コンベンションセンター(沖縄県・宜野湾市)
    • Year and Date
      2016-09-17
    • Related Report
      2016 Research-status Report
  • [Presentation] 海産緑藻オオハネモの雌雄配偶子における細胞融合因子GCS1の解析2016

    • Author(s)
      宮村新一、南雲 保、河野重行、森稔幸
    • Organizer
      日本植物学会第80回大会
    • Place of Presentation
      沖縄コンベンションセンター(沖縄県・宜野湾市)
    • Year and Date
      2016-09-16
    • Related Report
      2016 Research-status Report
  • [Presentation] 海産大型緑藻の配偶子、動接合子、遊走子における眼点の大きさと生育場所との関係2016

    • Author(s)
      宮村新一
    • Organizer
      日本藻類学会
    • Place of Presentation
      日本歯科大学 東京都千代田区
    • Year and Date
      2016-03-18
    • Related Report
      2015 Research-status Report
  • [Presentation] 緑藻スジアオノリに見られるアポミクシスの解析2016

    • Author(s)
      市原健介、宮村新一、平岡雅規、河野重行
    • Organizer
      日本藻類学会
    • Place of Presentation
      日本歯科大学 東京都千代田区
    • Year and Date
      2016-03-18
    • Related Report
      2015 Research-status Report
  • [Presentation] 海産緑藻の配偶子、動接合子、遊走子における眼点のサイズ、分布、走光性と生育場所との関係2015

    • Author(s)
      宮村新一
    • Organizer
      日本植物学会
    • Place of Presentation
      新潟コンベンションセンター 新潟県新潟市
    • Year and Date
      2015-09-06
    • Related Report
      2015 Research-status Report
  • [Remarks] Miyamura lab

    • URL

      http://sinone38.wixsite.com/cellmorphology

    • Related Report
      2016 Research-status Report

URL: 

Published: 2015-04-16   Modified: 2020-03-30  

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