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Studies on water utilization system of termites and application to termite control

Research Project

Project/Area Number 16K21597
Research Category

Grant-in-Aid for Young Scientists (B)

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

Principal Investigator

Kambara Kohei  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 (60727577)

Project Period (FY) 2016-04-01 – 2020-03-31
Project Status Completed (Fiscal Year 2019)
Budget Amount *help
¥3,380,000 (Direct Cost: ¥2,600,000、Indirect Cost: ¥780,000)
Fiscal Year 2018: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2017: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2016: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Keywordsシロアリ / アクアポリン / 水代謝
Outline of Final Research Achievements

This study aimed to elucidate the water metabolism in termite body by focusing on the aquaporins. We cloned cDNAs encoding aquaporin from Coptotermes formosanus and Incisitermes minor. Immunocytochemistry analysis for the Coptotermes aquaporins reveals that the two types of aquaporins are colocalized at the parietal cells of salivary glands of workers. The acinar salivary glands swelled or shrank rapidly when placed in hypotonic or hypertonic solutions. And these phenomena were not observed in the presence of copper or zinc. It was suggested that the Coptotermes aquaporins transport water and they can be inhibited by some metal ions. RNAi-mediated knockdown of a Coptotermes aquaporin causes a modulation of excretion in workers. It might be suggested that the aquaporin contributes to water metabolism in the digestive systems.

Academic Significance and Societal Importance of the Research Achievements

シロアリは木造建築物の多い日本では深刻な経済的被害をもたらす木材害虫である。日本で注意すべき代表的なシロアリ種にイエシロアリがいるが、本種の生活は水に依存し生活環境中の水を効率よく代謝・利用していると考えられている。本研究では細胞の水の通り道を形成するタンパク質であるアクアポリンを獲得し、イエシロアリの唾液腺では異なる2タイプのアクアポリンが共発現することを明らかにした。また、機能阻害による水代謝異常の誘引を示唆する結果を得たことから、アクアポリンを新たな標的分子にした個体の致死や社会生活の破綻を狙った防蟻薬剤の開発に資する成果であると考えられる。

Report

(5 results)
  • 2019 Annual Research Report   Final Research Report ( PDF )
  • 2018 Research-status Report
  • 2017 Research-status Report
  • 2016 Research-status Report
  • Research Products

    (3 results)

All 2018 2017 2016

All Presentation (3 results)

  • [Presentation] アメリカカンザイシロアリのアクアポリンcDNAのクローニング2018

    • Author(s)
      神原広平、大村和香子、東政明
    • Organizer
      第68回日本木材学会
    • Related Report
      2017 Research-status Report
  • [Presentation] イエシロアリPRIPタイプアクアポリンの組織特異的発現分布2017

    • Author(s)
      神原広平、大村和香子、丸山麻理弥、東政明
    • Organizer
      第67回日本木材学会大会
    • Place of Presentation
      九州大学、アクロス福岡(福岡県福岡市)
    • Year and Date
      2017-03-17
    • Related Report
      2016 Research-status Report
  • [Presentation] Localized expression of water-specific aquaporins in the salivary glands of the Formosan subterranean termite, Coptotermes formosanus.2016

    • Author(s)
      Kambara, K., Ohmura, W., Maruyama, M., Azuma, M
    • Organizer
      XXV Internatinoal Congress of Entomology (ICE 2016)
    • Place of Presentation
      Orlando, Florida(USA)
    • Year and Date
      2016-09-25
    • Related Report
      2016 Research-status Report

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Published: 2016-04-21   Modified: 2021-02-19  

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