Mechanosensation in leaf veins.

ABSTRACT: Whether the plant vasculature has the capacity to sense touch is unknown. We developed a quantitative assay to investigate touch-response electrical signals in the leaves and veins of Arabidopsis thaliana. Mechanostimulated electrical signaling in leaves displayed strong diel regulation. Signals of full amplitude could be generated by repeated stimulation at the same site after approximately 90 minutes. However, the signals showed intermediate amplitudes when repeatedly stimulated in shorter timeframes. Using intracellular electrodes, we detected touch-response membrane depolarizations in the phloem. On the basis of this, we mutated multiple Arabidopsis H⁺-ATPase (AHA) genes expressed in companion cells. We found that aha1 aha3 double mutants attenuat

SUBMITTER: Yang TH 

PROVIDER: S-EPMC10511200 | biostudies-literature | 2023 Sep

REPOSITORIES: biostudies-literature