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Where did the northernmost beech population come from?

Research Project

Project/Area Number 17K07852
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Forest science
Research InstitutionForest Research and Management Organization

Principal Investigator

Kitamura Keiko  国立研究開発法人森林研究・整備機構, 森林総合研究所, 主任研究員 等 (00343814)

Project Period (FY) 2017-04-01 – 2020-03-31
Project Status Completed (Fiscal Year 2019)
Budget Amount *help
¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
Fiscal Year 2019: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2018: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2017: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Keywordsブナ / 北限 / 分布変遷 / 遺伝的浮動 / NGS / SSR / MIGseq / EST-SSR / 分布拡大
Outline of Final Research Achievements

Japanese beech, Fagus crenata, is one of the most important temperate forest tree species in Japanese Archipelago. At the present, the northernmost distribution front is moving northward because of the climate warming after the Last Glacial Maximum. The results from DNA marker analyses, the population included the first colonizer. The genetic diversity was low and genetic differentiation was high because of the founder effect. Estimated source populations to this northernmost beech populations were the known conventionally northern populations approximately 12-16 km behind. Moreover, relatively large population at the source area contributed more than small and isolated populations to raise genetic diversity at the leading edge.

Academic Significance and Societal Importance of the Research Achievements

気候変動にともなって生物集団の地理的分布も変化すると考えられる。日本列島の自然生態系において重要な要素である樹木は永年生であることから分布域の変化が気候変動の速さに追いつかない可能性も指摘されている。本研究の結果、北方へ分布拡大を行なっているブナの北進最前線集団は、少数個体が約12-16km離れた新たな生育地に定着し、その後近隣の北限集団から花粉流動や種子散布が繰り返されて遺伝的多様性が蓄積されつつあることが明らかになった。樹木集団が北進を続けるための遺伝子多様性の蓄積は繁殖によって世代を重ねることが重要で、本研究により十数キロ以内がブナの遺伝子流動が可能な範囲の指標の一つとして示された。

Report

(4 results)
  • 2019 Annual Research Report   Final Research Report ( PDF )
  • 2018 Research-status Report
  • 2017 Research-status Report
  • Research Products

    (12 results)

All 2020 2019 2018 2017

All Journal Article (3 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 2 results) Presentation (9 results) (of which Int'l Joint Research: 3 results,  Invited: 2 results)

  • [Journal Article] 北限以北の植栽ブナと最北限隔離小集団における遺伝子多様性とその特徴2018

    • Author(s)
      北村系子
    • Journal Title

      北方林業

      Volume: 794 Pages: 10-12

    • Related Report
      2018 Research-status Report
  • [Journal Article] Synchronized expression of FLOWERING LOCUS T between branches underlies mass flowering in Fagus crenata2018

    • Author(s)
      佐竹暁子、川津一隆、千葉由佳子、北村系子、韓慶民
    • Journal Title

      Population Ecology

      Volume: 10

    • Related Report
      2018 Research-status Report
    • Peer Reviewed
  • [Journal Article] Genetic structure of remnant Quercus serrata populations at the northernmost limit of their distribution in Japan2017

    • Author(s)
      KITAMURA Keiko,NAMIKAWA Kanji, KAWAHARA Takayuki,MATSUMOTO Asako, Lerma San Jose-Maldia
    • Journal Title

      Acta Phytotaxonomica et Geobotanica

      Volume: 68 Pages: 1-15

    • NAID

      130005612089

    • Related Report
      2017 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Presentation] 2つの分布北限、黒松内低地帯周辺と奥尻島2020

    • Author(s)
      北村系子
    • Organizer
      第131回森林学会大会
    • Related Report
      2019 Annual Research Report
  • [Presentation] ブナにおける花芽分裂組織発達とFLOWERING LOCUS T相同遺伝子発現との関係2020

    • Author(s)
      宮崎祐子、北村系子、佐竹暁子
    • Organizer
      第131回森林学会大会
    • Related Report
      2019 Annual Research Report
  • [Presentation] 長距離散布によるブナ定着サイトに関する一考察2019

    • Author(s)
      北村系子
    • Organizer
      森林遺伝育種学会第8回大会
    • Related Report
      2019 Annual Research Report
  • [Presentation] ブナ天然分布北進最前線集団における由来推定の試み2019

    • Author(s)
      北村系子、津田吉晃、今井亮介、松尾歩、陶山佳久
    • Organizer
      日本森林学会大会講演要旨集
    • Related Report
      2018 Research-status Report
  • [Presentation] Climate change impact on potential habitats of buna (Fagus crenata) and a current migration process in the northernmost population in Japan2018

    • Author(s)
      田中信行、北村系子、松井哲哉
    • Organizer
      The 61st Annual Symposium of the Internationa Association for Vegetation Science
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research
  • [Presentation] Gene diversity and population structure of Siebold's beech, Fagus crenata, at its northernmost distribution limit on the oceanic island2018

    • Author(s)
      北村系子、並川寛司、津田吉晃、小林誠、松井哲哉
    • Organizer
      11th International Beech Symposium, IUFRO 1.01.07
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research
  • [Presentation] Genetic diversity at the northernmost edge of the distribution ragne of Siebold's beech,Fagus crenata2018

    • Author(s)
      北村系子
    • Organizer
      11th International Beech Symposium, IUFRO 1.01.07
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] ブナ最北限域に点在する隔離小集団の遺伝的多様性2018

    • Author(s)
      北村系子
    • Organizer
      第65回日本生態学会大会
    • Related Report
      2017 Research-status Report
    • Invited
  • [Presentation] 分布北限のブナ集団における葉・種子への被食圧の地理的分布2018

    • Author(s)
      小林誠、斎藤均、北村系子、並川寛司、松井哲哉
    • Organizer
      第65回日本生態学会大会
    • Related Report
      2017 Research-status Report

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Published: 2017-04-28   Modified: 2021-02-19  

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