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Two problems in the evolution of self-incompatibility:theoretical and empirical studies

Research Project

Project/Area Number 25291093
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypePartial Multi-year Fund
Section一般
Research Field Ecology/Environment
Research InstitutionTohoku University

Principal Investigator

Sakai Satoki  東北大学, 生命科学研究科, 准教授 (90272004)

Co-Investigator(Kenkyū-buntansha) MAKI MASAYUKI  東北大学, 学術資源研究公開センター, 教授 (60263985)
Project Period (FY) 2013-04-01 – 2016-03-31
Project Status Completed (Fiscal Year 2015)
Budget Amount *help
¥17,810,000 (Direct Cost: ¥13,700,000、Indirect Cost: ¥4,110,000)
Fiscal Year 2015: ¥4,940,000 (Direct Cost: ¥3,800,000、Indirect Cost: ¥1,140,000)
Fiscal Year 2014: ¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000)
Fiscal Year 2013: ¥8,320,000 (Direct Cost: ¥6,400,000、Indirect Cost: ¥1,920,000)
Keywords自家不和合性 / 連鎖 / 識別遺伝子 / 多様性 / S対立遺伝子 / 自家和合性 / 初期進化 / 多様化 / 理論
Outline of Final Research Achievements

We modeled the initial invasion of the first pollen and pistil alleles in gametophytic SI to determine whether these alleles can stably co-exist in a population without tight linkage. We assume pollen and pistil loci each carry an incompatibility allele S and an allele without an incompatibility function N. We assume that pollen with an S allele are incompatible with pistils carrying S alleles, whereas other crosses are compatible. Ovules in pistils carrying an S allele suffer viability costs because recognition consumes resources. We found that the cost of carrying a pistil S allele allows pollen and pistil S alleles to co-exist in a stable equilibrium if linkage is partial. This occurs because parents that carry pistil S alleles but are homozygous for pollen N alleles cannot avoid self-fertilization; however, they suffer viability costs. Hence, pollen N alleles are selected again.

Report

(4 results)
  • 2015 Annual Research Report   Final Research Report ( PDF )
  • 2014 Annual Research Report
  • 2013 Annual Research Report
  • Research Products

    (10 results)

All 2016 2015 2014

All Journal Article (7 results) (of which Peer Reviewed: 7 results,  Acknowledgement Compliant: 7 results) Presentation (3 results)

  • [Journal Article] How have self-incompatibility haplotypes diversified? Generation of new haplotypes during the evolution of self-incompatibility from self-compatibility.2016

    • Author(s)
      Satoki Sakai
    • Journal Title

      American Naturalist in press.

      Volume: 印刷中

    • Related Report
      2015 Annual Research Report
    • Peer Reviewed / Acknowledgement Compliant
  • [Journal Article] Difference in defense strategy in flower heads and leaves of Asteraceae: multiple species approach2014

    • Author(s)
      Oguro, M. and Sakai, S.
    • Journal Title

      Oecologia

      Volume: 174 Pages: 2727-239

    • Related Report
      2014 Annual Research Report
    • Peer Reviewed / Acknowledgement Compliant
  • [Journal Article] Initial invasion of gametophytic self-incompatibility alleles in the absence of tight linkage between pollen and pistil S alleles2014

    • Author(s)
      Sakai, S. and Wakoh, H.
    • Journal Title

      American Naturalist

      Volume: 184 Pages: 248-257

    • Related Report
      2014 Annual Research Report
    • Peer Reviewed / Acknowledgement Compliant
  • [Journal Article] Effects of nutrient contents and defense compounds on herbivory in reproductive organs and leaves of Iris gracilipes2014

    • Author(s)
      Onodera, H., Oguro, M., and Sakai, S.
    • Journal Title

      Plant Ecology

      Volume: 215 Pages: 1025-1035

    • Related Report
      2014 Annual Research Report
    • Peer Reviewed / Acknowledgement Compliant
  • [Journal Article] Rapid radiation in the Gengduan Mountains region and into Africa with allopolyploidy of Isodon (Lameaceae).2014

    • Author(s)
      Yu, X.-Q., Maki, M., Drew, B. T., Paton, A. J., Li, H.-W., Zhao, J.-L., Cornan, J. G. and Li, J.
    • Journal Title

      Molecular Phylogenetics and Evolution

      Volume: 77 Pages: 183-194

    • Related Report
      2014 Annual Research Report
    • Peer Reviewed / Acknowledgement Compliant
  • [Journal Article] Relationships between floral morphology and pollinator fauna in insular and mainland populations of Hosta longipes (Liliaceae)2014

    • Author(s)
      Yamada, T. and Maki, M.
    • Journal Title

      Plant Species Biology

      Volume: 29 Pages: 117-128

    • Related Report
      2014 Annual Research Report
    • Peer Reviewed / Acknowledgement Compliant
  • [Journal Article] Floral morphology and pollinator fauna characteristics of island and mainland populations of Ligustrum ovalifolium (Oleaceae)2014

    • Author(s)
      Yamada, T. and Maki, M.
    • Journal Title

      Botanical Journal of the Linnean Society

      Volume: 174 Pages: 489-501

    • Related Report
      2014 Annual Research Report
    • Peer Reviewed / Acknowledgement Compliant
  • [Presentation] 自家不和合性における識別遺伝子の多様化の謎:雌側の変異が鍵か2015

    • Author(s)
      酒井聡樹
    • Organizer
      日本生態学会
    • Place of Presentation
      鹿児島
    • Year and Date
      2015-03-15 – 2015-03-20
    • Related Report
      2014 Annual Research Report
  • [Presentation] オオヤマオダマキにおける自家受粉の役割:操作実験による検証2015

    • Author(s)
      板垣智之,小黒芳生,酒井聡樹
    • Organizer
      日本生態学会
    • Place of Presentation
      鹿児島
    • Year and Date
      2015-03-15 – 2015-03-20
    • Related Report
      2014 Annual Research Report
  • [Presentation] 自家不和合性における識別遺伝子の多様化の謎:雌側の変異が鍵か2014

    • Author(s)
      酒井聡樹
    • Organizer
      日本生態学会
    • Place of Presentation
      広島
    • Related Report
      2013 Annual Research Report

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Published: 2013-05-21   Modified: 2019-07-29  

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