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Mechanodetection of neighbor plants elicits adaptive leaf movements through calcium dynamics

Author

Listed:
  • Chrysoula K. Pantazopoulou

    (Utrecht University)

  • Sara Buti

    (Utrecht University)

  • Chi Tam Nguyen

    (University of Lausanne)

  • Lisa Oskam

    (Utrecht University)

  • Daan A. Weits

    (Utrecht University)

  • Edward E. Farmer

    (University of Lausanne)

  • Kaisa Kajala

    (Utrecht University)

  • Ronald Pierik

    (Utrecht University
    Wageningen University)

Abstract

Plants detect their neighbors via various cues, including reflected light and touching of leaf tips, which elicit upward leaf movement (hyponasty). It is currently unknown how touch is sensed and how the signal is transferred from the leaf tip to the petiole base that drives hyponasty. Here, we show that touch-induced hyponasty involves a signal transduction pathway that is distinct from light-mediated hyponasty. We found that mechanostimulation of the leaf tip upon touching causes cytosolic calcium ([Ca2+]cyt induction in leaf tip trichomes that spreads towards the petiole. Both perturbation of the calcium response and the absence of trichomes reduce touch-induced hyponasty. Finally, using plant competition assays, we show that touch-induced hyponasty is adaptive in dense stands of Arabidopsis. We thus establish a novel, adaptive mechanism regulating hyponastic leaf movement in response to mechanostimulation by neighbors in dense vegetation.

Suggested Citation

  • Chrysoula K. Pantazopoulou & Sara Buti & Chi Tam Nguyen & Lisa Oskam & Daan A. Weits & Edward E. Farmer & Kaisa Kajala & Ronald Pierik, 2023. "Mechanodetection of neighbor plants elicits adaptive leaf movements through calcium dynamics," Nature Communications, Nature, vol. 14(1), pages 1-12, December.
    • Handle: RePEc:nat:natcom:v:14:y:2023:i:1:d:10.1038_s41467-023-41530-0
    DOI: 10.1038/s41467-023-41530-0
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    References listed on IDEAS

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    1. Seyed A. R. Mousavi & Adeline Chauvin & François Pascaud & Stephan Kellenberger & Edward E. Farmer, 2013. "GLUTAMATE RECEPTOR-LIKE genes mediate leaf-to-leaf wound signalling," Nature, Nature, vol. 500(7463), pages 422-426, August.
    2. Takuma Hagihara & Hiroaki Mano & Tomohiro Miura & Mitsuyasu Hasebe & Masatsugu Toyota, 2022. "Calcium-mediated rapid movements defend against herbivorous insects in Mimosa pudica," Nature Communications, Nature, vol. 13(1), pages 1-9, December.
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