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Genome constitution and reticulate evolution in apogamous ferns

Research Project

Project/Area Number 16H04835
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Research Field Biodiversity/Systematics
Research InstitutionTokyo Metropolitan University

Principal Investigator

MURAKAMI Noriaki  首都大学東京, 理学研究科, 教授 (60192770)

Co-Investigator(Kenkyū-buntansha) 山本 薫  横須賀市自然・人文博物館, その他部局等, 学芸員 (00766016)
海老原 淳  独立行政法人国立科学博物館, 植物研究部, 研究主幹 (20435738)
高宮 正之  熊本大学, 大学院先端科学研究部(理), 教授 (70179555)
綿野 泰行  千葉大学, 大学院理学研究院, 教授 (70192820)
Research Collaborator HORI Kiyotaka  首都大, 理工
Project Period (FY) 2016-04-01 – 2019-03-31
Project Status Completed (Fiscal Year 2018)
Budget Amount *help
¥17,680,000 (Direct Cost: ¥13,600,000、Indirect Cost: ¥4,080,000)
Fiscal Year 2018: ¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
Fiscal Year 2017: ¥4,940,000 (Direct Cost: ¥3,800,000、Indirect Cost: ¥1,140,000)
Fiscal Year 2016: ¥9,880,000 (Direct Cost: ¥7,600,000、Indirect Cost: ¥2,280,000)
Keywords遺伝的多様性 / 無性生殖 / 無配生殖 / オシダ科 / オシダ属 / ゲノム / 交雑 / 3倍体 / 3倍体 / シダ植物 / 網状進化
Outline of Final Research Achievements

Apogamy in ferns is a type of special asexual reproduction, producing spores that have the same genome as their parental sporophyte. Such a reproductive mode is not unusual in ferns. Approximately 10% of all fern species are reported to exhibit apogamous reproduction. Although requiring no sexual reproduction through their life cycle, many apogamous fern species exhibit extensive morphological and genetic variations. It is because apogamous species sometimes hybridize with related sexual species and incorporate their genomes. In fact, when we examine apogamous fern species using several nuclear genetic markers, many apogamous fern species were shown to contain genomes of two or three different sexual species. It is interesting that apogamous species which do not need crossing with other individuals for reproduction actually incorporated genomes of even distantly related species through hybridization. Our finding strongly suggested how sex (crossing) is important for higher organisms.

Academic Significance and Societal Importance of the Research Achievements

シダ植物の無配生殖種は、有性生殖を二次的にやめた種と考えられてきた。しかし、本研究によって、有性生殖種同士では雑種すら形成しないような遠縁の種とも、無配生殖種は時々交雑して、そのゲノムを取り込んでいることが分かった。生物学者も含めて多くの人が高等生物は、有性生殖以外の方法で繁殖するのが機構的に困難なので、有性生殖を続けていると考えている。しかし、胞子を通じて無性生殖が可能なシダ植物においても、しかも遠縁の種とまで交雑して,その遺伝的多様性を高めていることは、交雑すること(すなわち有性生殖そのもの)が,生物が生存し続けていく上で、いかに重要で必要不可欠なことであるかを示している。

Report

(4 results)
  • 2018 Annual Research Report   Final Research Report ( PDF )
  • 2017 Annual Research Report
  • 2016 Annual Research Report
  • Research Products

    (17 results)

All 2019 2018 2017 2016 Other

All Int'l Joint Research (4 results) Journal Article (6 results) (of which Int'l Joint Research: 3 results,  Peer Reviewed: 6 results,  Open Access: 6 results,  Acknowledgement Compliant: 2 results) Presentation (5 results) (of which Int'l Joint Research: 1 results,  Invited: 1 results) Remarks (2 results)

  • [Int'l Joint Research] Chenshan Botanical Garden(中国)

    • Related Report
      2018 Annual Research Report
  • [Int'l Joint Research] Taiwan Forestry Research Institute(台湾)

    • Related Report
      2017 Annual Research Report
  • [Int'l Joint Research] National Taiwan University/Taiwan Forestry Research Institute(Taiwan)

    • Related Report
      2016 Annual Research Report
  • [Int'l Joint Research] Guangxi Normal University/Shanghai Botanical Garden/Beijing Institute of Botany(China)

    • Related Report
      2016 Annual Research Report
  • [Journal Article] Revised Classification of the Species within the <i>Dryopteris varia </i>Complex (Dryopteridaceae) in Japan2018

    • Author(s)
      Hori, K., A. Ebihara and N. Murakami
    • Journal Title

      Acta phytotaxonomica et geobotanica

      Volume: 69 Issue: 2 Pages: 77-108

    • DOI

      10.18942/apg.201720

    • NAID

      130007386509

    • ISSN
      1346-7565, 2189-7042
    • Year and Date
      2018-06-30
    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] New Diploid Sexual Cytotypes of <i>Dryopteris </i>sect. <i>Erythrovariae </i>(Dryopteridaceae) in China2018

    • Author(s)
      Hori, K., X. Zhou, W. Shao, Y.-H. Yan, R.-X. Wang and N. Murakami
    • Journal Title

      Acta phytotaxonomica et geobotanica

      Volume: 69 Issue: 2 Pages: 127-133

    • DOI

      10.18942/apg.201721

    • NAID

      130007386504

    • ISSN
      1346-7565, 2189-7042
    • Year and Date
      2018-06-30
    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Hybridization of the Dryopteris erythrosora complex (Dryopteridaceae, Polypodiidae) in Japan and adjacent areas2018

    • Author(s)
      Hori, K., X.-L. Zhou, W. Shao, Y.-H. Yan, A. Ebihara, R.-X. Wang, H. Ishikawa, Y. Watano and N. Murakami,
    • Journal Title

      Hikobia

      Volume: Hikobia Pages: 299-313

    • NAID

      40021793771

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Recurrent hybridization without homoeologous chromosome paring in the Dryopteris varia complex (Dryopteridaceae)2018

    • Author(s)
      Hori, K., Okuyama, Y., Watano, Y. and N. Murakami
    • Journal Title

      Chromosome Bot.

      Volume: 13 Pages: 9-24

    • NAID

      130007437449

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Geographical Distribution of Sexual and Apogamous Types of <i>Dryopteris formosana </i>and <i>Dryopteris varia </i>(Dryopteridaceae) in Taiwan2017

    • Author(s)
      Hori, K., L-Y, Kuo., W-L, Chiou., A, Ebihara. and N. Murakami
    • Journal Title

      Acta phytotaxonomica et geobotanica

      Volume: 68 Issue: 1 Pages: 23-32

    • DOI

      10.18942/apg.201612

    • NAID

      130005612094

    • ISSN
      1346-7565, 2189-7042
    • Year and Date
      2017-02-28
    • Related Report
      2017 Annual Research Report 2016 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research / Acknowledgement Compliant
  • [Journal Article] Hybrid Origin of the Apogamous Fern <i>Dryopteris hondoensis </i>(Dryopteridaceae)2016

    • Author(s)
      Hori, K., Y. Watano and N. Murakami
    • Journal Title

      Acta phytotaxonomica et geobotanica

      Volume: 67 Issue: 3 Pages: 133-146

    • DOI

      10.18942/apg.201609

    • NAID

      130005251478

    • ISSN
      1346-7565, 2189-7042
    • Year and Date
      2016-10-31
    • Related Report
      2016 Annual Research Report
    • Peer Reviewed / Open Access / Acknowledgement Compliant
  • [Presentation] ノコギリシダ属シロヤマシダ類の分類に関する予備的調査~アマミシダがシロヤマシダの母親?~2019

    • Author(s)
      畠康平・堀清鷹・芹沢俊介・村上哲明・髙宮正之
    • 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
  • [Presentation] 国に分布するベニシダ類の二倍体有性生殖種2017

    • Author(s)
      堀清鷹・周喜采・邵文・産岳鴻・王任翔・張先春・村上哲明
    • Organizer
      日本植物分類学会第16回大会
    • Place of Presentation
      京都
    • Year and Date
      2017-03-10
    • Related Report
      2016 Annual Research Report
  • [Presentation] オシダ属無配生殖種の網状進化2017

    • Author(s)
      堀清鷹・村上哲明
    • Organizer
      日本植物分類学会第17回大会(金沢)
    • Related Report
      2017 Annual Research Report
  • [Presentation] 日本産ベニシダ類の網状進化2016

    • Author(s)
      堀清鷹・Kuo Li-Yaung・海老原淳・Chiou Wen-Liang・村上哲明
    • Organizer
      日本植物学会第80回大会
    • Place of Presentation
      宜野湾、沖縄
    • Year and Date
      2016-09-16
    • Related Report
      2016 Annual Research Report
  • [Presentation] Reticulate evolution maintaining original genome constituitions in the Dryopteris varia complex (Dryopteridaceae, subg. Erthrovariae, sect. Variae) and its related sexual species in Japan2016

    • Author(s)
      Hori, K., Okuyama, Y. , Ebihara, E. (Natnl. Mus. Nat. Sci, Tokyo), Watano,Y. and Murakami,N.
    • Organizer
      East Asian Plant Diversity and Conservation 2016
    • Place of Presentation
      Tokyo, Japan
    • Year and Date
      2016-08-23
    • Related Report
      2016 Annual Research Report
    • Int'l Joint Research / Invited
  • [Remarks] 首都大学東京 理学研究科生命科学専攻 植物系統分類学研究室 研究紹介

    • URL

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

    • Related Report
      2018 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 2016 Annual Research Report

URL: 

Published: 2016-04-21   Modified: 2022-08-05  

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