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Search for ectomycorrhizal fungi contributing to the conservation of the endangered species Betula apoiensis

Research Project

Project/Area Number 16K07774
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Forest science
Research InstitutionThe University of Tokyo

Principal Investigator

Murata Masao  東京大学, 大学院新領域創成科学研究科, 特任研究員 (20582381)

Project Period (FY) 2016-04-01 – 2019-03-31
Project Status Completed (Fiscal Year 2018)
Budget Amount *help
¥4,810,000 (Direct Cost: ¥3,700,000、Indirect Cost: ¥1,110,000)
Fiscal Year 2018: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2017: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2016: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
Keywords絶滅危惧種 / 外生菌根菌 / アポイカンバ
Outline of Final Research Achievements

Betula apoiensis is an endangered tree that only inhabits Mt. Apoi in Hokkaido. In this study, in order to clarify the ectomycorrhizal fungi (EMF) that infect B. apoiensis, the species composition of EMF on soil spore banks and mature trees in the B. apoiensis stand was investigated. As a result, the EMF of mature trees of B. apoiensis were frequently detected at Cortinariaceae, Tuberaceae, and Boletaceae. On the other hand, the number of species and frequency of EMF on the soil spore banks are extremely low. Therefore, these results suggested that the regeneration of B. apoiensis not depend on soil spore banks but depend on mycelial networks at mature tree.

Academic Significance and Societal Importance of the Research Achievements

申請者はこれまでに絶滅危惧種であるトガサワラやヤクタネゴヨウの菌根菌群集を安定時と攪乱時の感染源の両面から明らかにし、攪乱時の菌根菌の感染源が両樹種の実生の生育を助けることを発見した。本研究では広葉樹であるアポイカンバでも同様の研究を行ったところ、これまでの樹種とは異なったパターンを示し、安定時の感染源のみが実生の生育を助ける結果となった。本研究から得られた結果は、菌根菌を利用した絶滅危惧樹木の保全手法は、対象樹種の実生の感染源によって変える必要性が示され、今後世界各地で衰退や絶滅が危惧される同様の樹木にも応用する意味で非常に意義のあるものとなった。

Report

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

    (3 results)

All 2019 2017

All Presentation (3 results)

  • [Presentation] アポイカンバ・ハイマツ林における外生菌根菌の埋土胞子群集2019

    • Author(s)
      村田政穂、奈良一秀
    • Organizer
      日本森林学会
    • Related Report
      2018 Annual Research Report
  • [Presentation] アポイカンバ・ハイマツ林の外生菌根菌群集2017

    • Author(s)
      村田政穂、奈良一秀
    • Organizer
      日本森林学会
    • Place of Presentation
      鹿児島大学(鹿児島県鹿児島市)
    • Year and Date
      2017-03-26
    • Related Report
      2016 Research-status Report
  • [Presentation] アポイカンバ・ハイマツ林分の外生菌根菌群集2017

    • Author(s)
      村田政穂、奈良一秀
    • Organizer
      日本森林学会
    • Related Report
      2017 Research-status Report

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Published: 2016-04-21   Modified: 2020-03-30  

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