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Conference Papers Year : 2022

Mechanical stresses and long-distance signaling in Poplar

, , ,
Erwan Tinturier
  • Function : Author
Nathalie Fournier-Leblanc
  • Function : Author
Eric Badel
Jean-Louis Julien
  • Function : Author

Abstract

Under natural conditions, plants are subjected to mechanical stresses and potentially show a response at a distance from the site of stimulation suggesting the transfer of information. The nature of the information vector remains unknown to date. The propagation of an electrical signal following the bending of the poplar stem was studied by extracellular electrophysiology measurements. This study revealed the propagation of a graded potential (GP), an electrical response with original characteristics that di erentiate it from an action potential (AP) and its electrotonic propagation, leading to the idea of another mode of propagation and to the hypothesis of a hydroelectric coupling. In order to determine whether the PG is likely to trigger a biological response, various RNA seq experiments were undertaken. The results revealed a signi cant transcriptional response at a distance from the solicited area, dependent on the passage of a PG.
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Dates and versions

hal-03727907 , version 1 (19-07-2022)

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  • HAL Id : hal-03727907 , version 1

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Erwan Tinturier, Nathalie Fournier-Leblanc, Eric Badel, Jean-Louis Julien. Mechanical stresses and long-distance signaling in Poplar. 10th Plant Biomechanics conference, ENS Lyon, Aug 2022, Lyon, France. ⟨hal-03727907⟩

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