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Molecular mechanisms of social behavior involved with maintenance of fungus comb in fungus-growing termite

Research Project

Project/Area Number 15K07798
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Insect science
Research InstitutionUniversity of the Ryukyus (2015, 2017-2018)
Foundation for Advancement of International Science (2016)

Principal Investigator

HOJO Masaru  琉球大学, 研究推進機構, 特命講師 (80569898)

Co-Investigator(Kenkyū-buntansha) 重信 秀治  基礎生物学研究所, 生物機能解析センター, 特任准教授 (30399555)
Project Period (FY) 2015-04-01 – 2019-03-31
Project Status Completed (Fiscal Year 2018)
Budget Amount *help
¥4,940,000 (Direct Cost: ¥3,800,000、Indirect Cost: ¥1,140,000)
Fiscal Year 2017: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2016: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Fiscal Year 2015: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
Keywordsキノコシロアリ / オオシロアリタケ / 栽培共生 / タイワンシロアリ / Termitomyces / Odontotermes / 共生 / イケハラオオシロアリタケ / RNA-seq
Outline of Final Research Achievements

Our field researches and DNA analyses elucidated that the distribution pattern of Termitomyces spp. cultivated by fungus-growing termite, Odontotermes formosanus, in Iriomote, Okinawa and Taiwan islands. A new fruiting body lacking pseudorhiza of Termitomyces species was identified at Iriomote, Ishigaki and Okinawa islands. It was revealed by behavioral analyses that the polyethism between two workers of O. formosanus in maintenance of fungus comb was exist. Some candidate genes related to the digestion of cellulosic materials and the maintenance of fungus comb were identified by comprehensive gene expression analysis of all caste of O. formosanus.

Academic Significance and Societal Importance of the Research Achievements

シロアリにおけるキノコ栽培は、人間の農耕よりもはるかに歴史が長く、その進化にはシロアリが社会性を獲得したことと大きく関係していると考えられる。シロアリとキノコの両サイドから網羅的な遺伝子発現解析することで、両者で補完されている代謝経路などがわかり、栽培共生進化の解明にも近づけた。
また、オオシロアリタケの子実体は大変美味しいが、シロアリなしでの培養が難しい。菌園内のシロアリの行動解析やその分子機構を理解することで、オオシロアリタケキノコの人工培養にも道が開ける。

Report

(5 results)
  • 2018 Annual Research Report   Final Research Report ( PDF )
  • 2017 Research-status Report
  • 2016 Research-status Report
  • 2015 Research-status Report
  • Research Products

    (7 results)

All 2019 2018 2016 2015 Other

All Int'l Joint Research (2 results) Journal Article (1 results) (of which Peer Reviewed: 1 results) Presentation (4 results)

  • [Int'l Joint Research] 国立成功大学/生命科学系(台湾)

    • Related Report
      2016 Research-status Report
  • [Int'l Joint Research] 国立成功大学/生命科学系(台湾)

    • Related Report
      2015 Research-status Report
  • [Journal Article] A new finding of small fruiting bodies lacking pseudorhiza of Termitomyces (Basidiomycota, Agaricales, Lyophyllaceae) associated with Japanese fungus-growing termite Odontotermes formosanus (Arthropoda, Blattodea, Termitidae)2019

    • Author(s)
      Masaru Hojo, Shuji Shigenobu
    • Journal Title

      The Biological Magazine Okinawa

      Volume: 57 Pages: 51-64

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed
  • [Presentation] 日本のキノコシロアリが育てるもう1種のオオシロアリタケ属きのこ2018

    • Author(s)
      北條優、保坂健太郎、重信秀治
    • Organizer
      日本菌学会第62回大会
    • Related Report
      2018 Annual Research Report
  • [Presentation] ゲラニルゲラニル二リン酸合成酵素遺伝子がシロアリ兵隊の防衛戦術を進化させた2018

    • Author(s)
      北條優、重信秀治、前川清人、三浦徹、徳田岳
    • Organizer
      日本昆虫学会第78回大会
    • Related Report
      2018 Annual Research Report
  • [Presentation] シロアリの特殊な防衛物質「ジテルペン」の合成経路の進化2016

    • Author(s)
      北條優、重信秀治、前川清人、三浦徹、徳田岳
    • Organizer
      日本進化学会
    • Place of Presentation
      東京工業大学
    • Year and Date
      2016-08-25
    • Related Report
      2016 Research-status Report
  • [Presentation] 日本のキノコシロアリ働きアリの菌床管理における分業2015

    • Author(s)
      北條優・重信秀治
    • Organizer
      日本昆虫学会第75回大会
    • Place of Presentation
      九州大学箱崎キャンパス
    • Year and Date
      2015-09-21
    • Related Report
      2015 Research-status Report

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Published: 2015-04-16   Modified: 2022-02-28  

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