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MSL10 is a high-sensitivity mechanosensor in the tactile sense of the Venus flytrap

Author

Listed:
  • Hiraku Suda

    (Saitama University)

  • Hiroki Asakawa

    (Saitama University)

  • Takuma Hagihara

    (Saitama University)

  • Shoko Ohi

    (National Institute for Basic Biology)

  • Shoji Segami

    (National Institute for Basic Biology
    The Graduate University for Advanced Studies (SOKENDAI))

  • Mitsuyasu Hasebe

    (National Institute for Basic Biology
    The Graduate University for Advanced Studies (SOKENDAI))

  • Masatsugu Toyota

    (Saitama University
    Suntory Foundation for Life Sciences
    Huazhong Agricultural University)

Abstract

The tactile sense is essential for living organisms. However, the molecular mechanisms of mechanosensing in plants remain unclear. The Venus flytrap (Dionaea muscipula), a carnivorous plant, possesses mechanosensitive organs called sensory hairs. After sensing a touch stimulus, the hair generates an action potential (AP) and a long-range calcium signal that propagate to the leaf blade, triggering leaf movement to catch prey after two successive calcium signals. Here, we show that the MECHANOSENSITIVE CHANNEL OF SMALL CONDUCTANCE–LIKE homologue (DmMSL10/FLYC1) in the Venus flytrap acts as a high-sensitivity mechanosensor. Using simultaneous intracellular recordings of calcium and electrical signals, we identify a two-step mechanical reception system in the sensory hairs: mechanosensing, limited to the stimulated cell, followed by threshold-dependent AP firing and subsequent calcium signal propagation. In dmmsl10 knockout mutants, long-range calcium and electrical signal propagation are impaired, leading to defective prey detection in planta. Our findings demonstrate that DmMSL10 is crucial for mechanosensing, facilitating AP firing by generating a receptor potential (RP) amplitude.

Suggested Citation

  • Hiraku Suda & Hiroki Asakawa & Takuma Hagihara & Shoko Ohi & Shoji Segami & Mitsuyasu Hasebe & Masatsugu Toyota, 2025. "MSL10 is a high-sensitivity mechanosensor in the tactile sense of the Venus flytrap," Nature Communications, Nature, vol. 16(1), pages 1-12, December.
    • Handle: RePEc:nat:natcom:v:16:y:2025:i:1:d:10.1038_s41467-025-63419-w
    DOI: 10.1038/s41467-025-63419-w
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    References listed on IDEAS

    as
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