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Studies on sex expression and pollination characteristics of overseas ancestral species for endemic plants in the Ogasawara Islands

Research Project

Project/Area Number 17H04609
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section海外学術
Research Field Biodiversity/Systematics
Research InstitutionTokyo Metropolitan University

Principal Investigator

Murakami Noriaki  東京都立大学, 理学研究科, 教授 (60192770)

Co-Investigator(Kenkyū-buntansha) 國府方 吾郎  独立行政法人国立科学博物館, 植物研究部, 研究主幹 (40300686)
渡邊 謙太  沖縄工業高等専門学校, 技術支援室, 技術専門職員 (50510111)
高山 浩司  京都大学, 理学研究科, 准教授 (60647478)
横山 潤  山形大学, 理学部, 教授 (80272011)
Project Period (FY) 2017-04-01 – 2021-03-31
Project Status Completed (Fiscal Year 2020)
Budget Amount *help
¥18,720,000 (Direct Cost: ¥14,400,000、Indirect Cost: ¥4,320,000)
Fiscal Year 2020: ¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
Fiscal Year 2019: ¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
Fiscal Year 2018: ¥5,590,000 (Direct Cost: ¥4,300,000、Indirect Cost: ¥1,290,000)
Fiscal Year 2017: ¥6,370,000 (Direct Cost: ¥4,900,000、Indirect Cost: ¥1,470,000)
Keywords進化 / 小笠原諸島 / 固有種 / 性表現 / 送粉共生系 / ベトナム / 生物多様性 / 海洋島 / 送粉 / 共生系 / 分子系統地理学
Outline of Final Research Achievements

In oceanic islands, such as the Ogasawara Islands, high percentage of dioecious sex expression (male and female are separate individuals) is observed though most of flowering plant species are hermaphlodite. In this study, sex expression and pollinator animals which may strongly affect the sex expression of plants were investigated by comparing those between the plant species of the Ogasawara Islands and their ancestral species growing in Southeat Asia (Philippines, Indonesia, Vietnam) and the Pacific Islands (the Mariana, Palau and Marquesas Islands).

Academic Significance and Societal Importance of the Research Achievements

大部分の被子植物種が雌雄両全性の性表現をもっているので、なぜこのようになっているのか、あるいはどのような条件下で性表現が雌雄異株に進化的変化をするのかを研究することはとても困難である。ところが、小笠原諸島のような海洋島では、このような性表現の進化的変化が比較的短い期間(数万年~数十万年)に繰り返し起こっているので、このような疑問に答えるための研究を行うことができる。性表現は繁殖、すなわち生物が命を次世代に繋ぐプロセスにおいて、その成否に大いに影響すると考えられるので、その科学的理解を深めることは、生物を深く理解することにつながる。

Report

(5 results)
  • 2020 Annual Research Report   Final Research Report ( PDF )
  • 2019 Annual Research Report
  • 2018 Annual Research Report
  • 2017 Annual Research Report
  • Research Products

    (17 results)

All 2020 2019 2017 Other

All Int'l Joint Research (8 results) Journal Article (4 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 4 results,  Open Access: 3 results) Presentation (2 results) Remarks (3 results)

  • [Int'l Joint Research] Kon Chu Rang Nature Reserve(ベトナム)

    • Related Report
      2020 Annual Research Report
  • [Int'l Joint Research] University of Guam(米国)

    • Related Report
      2020 Annual Research Report
  • [Int'l Joint Research] Department of Natural Resources Rota(その他の国・地域)

    • Related Report
      2020 Annual Research Report
  • [Int'l Joint Research] Kon Chu Rang Nature Reserve/Kon Ka Kinh National Park(ベトナム)

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

    • Related Report
      2019 Annual Research Report
  • [Int'l Joint Research] Department of Natural Resources Rota(その他の国・地域)

    • Related Report
      2019 Annual Research Report
  • [Int'l Joint Research] グアム大学/ハワイ大学(米国)

    • Related Report
      2018 Annual Research Report
  • [Int'l Joint Research] グアム大学(米国)

    • Related Report
      2017 Annual Research Report
  • [Journal Article] <p><strong>A new species of succulent plants from the Muko-jima group of the Bonin Islands, Japan: <em>Sedum mukojimense</em> (Crassulaceae)</strong></p>2020

    • Author(s)
      ITO TAKURO、GOTO MASAFUMI、NAKANO HIDETO、KOKUBUGATA GORO
    • Journal Title

      Phytotaxa

      Volume: 450 Issue: 2 Pages: 188-198

    • DOI

      10.11646/phytotaxa.450.2.4

    • NAID

      120006870289

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] DNA Barcoding Reveals Evolutionary Changes in Host Specificity of a Parasitic Plant, Orobanche boninsimae (Orobanchaceae), Endemic to the Bonin (Ogasawara) Islands12020

    • Author(s)
      Nishimura Akihiro、Fuse Shizuka、Tamura Minoru N.、Kato Hidetoshi、Takayama Koji
    • Journal Title

      Pacific Science

      Volume: 74 Issue: 1 Pages: 87-87

    • DOI

      10.2984/74.1.7

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Journal Article] A new species of Gynochthodes (Rubiaceae), G. honbaensis, from Hon Ba Nature Reserve, southern Vietnam.2019

    • Author(s)
      Oguri E, Tagane S, Dang VS, Yang CJ, Toyama H, Hop T, Murakami N and Yahara T
    • Journal Title

      Phytotaxa

      Volume: 406 Issue: 3 Pages: 213-217

    • DOI

      10.11646/phytotaxa.406.3.8

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Pollination and reproduction of Psychotria homalosperma, an endangered distylous tree endemic to the oceanic Bonin (Ogasawara) Islands, Japan2017

    • Author(s)
      Watanabe Kenta、Kato Hidetoshi、Kuraya Eisuke、Sugawara Takashi
    • Journal Title

      Plant Species Biology

      Volume: 33 Issue: 1 Pages: 16-27

    • DOI

      10.1111/1442-1984.12183

    • Related Report
      2017 Annual Research Report
    • Peer Reviewed / Open Access
  • [Presentation] 小笠原諸島固有寄生植物シマウツボにおける集団間分化と宿主転換の関係性2020

    • Author(s)
      西村明洋・加藤英寿・布施静香・田村実・髙山浩司
    • Organizer
      日本植物学会第84回大会
    • Related Report
      2020 Annual Research Report
  • [Presentation] ハウチワノキにおける核DNAデータを 用いた小笠原・琉球への進入の追跡2019

    • Author(s)
      國府方吾郎・伊東拓朗・鈴木裕美子・村上哲明・横田昌嗣
    • Organizer
      日本植物分類学会第18回大会(東京・八王子)
    • Related Report
      2018 Annual Research Report
  • [Remarks] 東京都立大学 生命科学専攻 研究紹介 植物系統分類学研究室

    • URL

      https://www.biol.se.tmu.ac.jp/labo.asp?ID=plasys

    • Related Report
      2020 Annual Research Report
  • [Remarks] 東京都立大学 生命科学専攻 研究紹介 植物系統分類学研究室

    • URL

      https://www.biol.se.tmu.ac.jp/labo.asp?ID=plasys

    • Related Report
      2019 Annual Research Report
  • [Remarks] 首都大学東京 生命科学専攻 研究紹介 植物系統分類学研究室

    • URL

      http://www.biol.se.tmu.ac.jp/labo.asp?ID=plasys

    • Related Report
      2017 Annual Research Report

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Published: 2017-04-28   Modified: 2022-05-23  

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