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Molecular mechanisms of the memory in Dionaea muscipula

Research Project

Project/Area Number 16K14761
Research Category

Grant-in-Aid for Challenging Exploratory Research

Allocation TypeMulti-year Fund
Research Field Plant molecular biology/Plant physiology
Research InstitutionNational Institute for Basic Biology

Principal Investigator

Hasebe Mitsuyasu  基礎生物学研究所, 生物進化研究部門, 教授 (40237996)

Project Period (FY) 2016-04-01 – 2020-03-31
Project Status Completed (Fiscal Year 2019)
Budget Amount *help
¥3,770,000 (Direct Cost: ¥2,900,000、Indirect Cost: ¥870,000)
Fiscal Year 2018: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2017: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2016: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Keywordsハエトリソウ / 植物記憶 / カルシウム / メカノセンシング / 進化 / 食虫植物 / 植物運動 / シグナル伝達 / 運動 / 刺激
Outline of Final Research Achievements

The carnivorous plant Dionaea muscipula captures, digests, and absorbs small animals for nourishment by closing the leaves. For the leaf to close, the sensory hairs on the leaf must be stimulated twice within about 30 seconds. In other words, the flytrap memorizes the first stimulus for about 30 seconds. We generated a transgenic flytrap expressing a calcium sensor protein and analyzed the spatiotemporal variation in cytosolic calcium ion concentration in response to stimulation. The results showed that the concentration increased from the sensory hairs to the leaf blade at the first stimulus, while the concentration exceeded a threshold at the second stimulus, causing the leaf to close. Taking into account other experimental results, it was found that cytosolic calcium ion concentration changes are the molecular mechanism of memory in flytrap.

Academic Significance and Societal Importance of the Research Achievements

脳も神経も無いのに、ハエトリソウが刺激を記憶できるということは、100年以上前に発見され、研究者だけでなく、社会的な関心も高かった。しかし、その仕組みは不明だった。今回の実験で植物の記憶がカルシウム濃度の変化によって引き起こされることが明らかになった。

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

    (16 results)

All 2020 2019 2018 2017 Other

All Int'l Joint Research (3 results) Presentation (11 results) (of which Int'l Joint Research: 7 results,  Invited: 8 results) Remarks (2 results)

  • [Int'l Joint Research] Wuerzburg University(ドイツ)

    • Related Report
      2019 Annual Research Report
  • [Int'l Joint Research] Wurzburg University(ドイツ)

    • Related Report
      2018 Research-status Report
  • [Int'l Joint Research] ビュルツブルグ大学(ドイツ)

    • Related Report
      2016 Research-status Report
  • [Presentation] Calcium ion mediated memory system in the carnivorous plant Dionaea muscipula2020

    • Author(s)
      Hiraku Suda and Mitsuyasu Hasebe
    • Organizer
      第61回日本植物生理学会年会
    • Related Report
      2019 Annual Research Report
    • Invited
  • [Presentation] Evolution of Carnivory and movement in Plants2019

    • Author(s)
      Mitsuyasu Hasebe
    • Organizer
      Japan Taiwan Plant Biology 2019
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Real-time cytosolic calcium imaging to elucidate the molecular mechanism of memory system in the Venus flytrap2018

    • Author(s)
      須田啓
    • Organizer
      9th International Plant Biomechanics Conference, McGill University
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research
  • [Presentation] ハエトリソウとコモウセンゴケの形質転換技術およびハエトリソウのカルシウムイメージング2018

    • Author(s)
      須田啓
    • Organizer
      日本植物学会第82回大会
    • Related Report
      2018 Research-status Report
    • Invited
  • [Presentation] Evolution of Plant Carnivory and Movement2018

    • Author(s)
      長谷部光泰
    • Organizer
      Naito Conference, Sapporo, Japan
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Evolution of Plant Carnivory and Movement2018

    • Author(s)
      長谷部光泰
    • Organizer
      Annual Meeting of the Society of Molecular Biology, Yokohama, Japan
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Evolution of Plant Carnivory and Movement2018

    • Author(s)
      長谷部光泰
    • Organizer
      Academia Sinica, Tapei, Taiwan
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] ハエトリソウの記憶機構解明に向けたカルシウムイオン動態観察2018

    • Author(s)
      須田啓 福島健児 真野弘明 豊田正嗣 玉田洋介 長谷部光泰
    • Organizer
      第59回日本植物生理学会年会
    • Related Report
      2017 Research-status Report
  • [Presentation] Evolution of movement and carnivory in flowering plants2017

    • Author(s)
      長谷部光泰
    • Organizer
      CDB Workshop, RIKEN CDB, Kobe, Japan
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Genome biology to understand the evolution of carnivory and movement in plants2017

    • Author(s)
      長谷部光泰
    • Organizer
      International Symposium on Evolutionary Genomics and Bioinformatics, Tzu Chi University, Huaren, Taiwan
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] ハエトリグサとコモウセンゴケにおける形質転換技術の確立2017

    • Author(s)
      須田啓 上田千晴 福島健児 真野弘明 豊田正嗣 玉田洋介 長谷部光泰
    • Organizer
      日本植物学会 第81回大会
    • Related Report
      2017 Research-status Report
  • [Remarks] 研究室webぺージ

    • URL

      http://www.nibb.ac.jp/evodevo

    • Related Report
      2019 Annual Research Report
  • [Remarks] 研究室webページ

    • URL

      http://www.nibb.ac.jp/evodevo

    • Related Report
      2018 Research-status Report 2017 Research-status Report 2016 Research-status Report

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

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