Transduction of mechanical cellular oscillation by the plasma-membrane mechanosensitive channel MSL10

• DOI: 10.1101/815191
• Publication Date: 2019-10-24T19:15:24Z
• Authors: Daniel Tran; Tiffanie Girault; Marjorie Guichard; Sébastien Thomine; Nathalie Leblanc-...; Bruno Moulia; Emmanuel de Langre; Jean-Marc Allain; Jean-Marie Frachisse
• Keywords: Oscillation (cell signaling); Transduction (biophysics)

Abstract Throughout their life, plants are submitted to recurrent cyclic mechanical loading due wind. The resulting passive oscillation movements of stem and foliage is an important phenomenon for biological ecological issues such as photosynthesis optimization 1–3 thermal exchange 4 . induced motions at plant scale well described analyzed, with oscillations typically 1 3 Hz in trees 5–10 However, the cellular perception transduction recurring signals remains open question. Multimeric protein complexes forming mechanosensitive (MS) channels embedded membrane provide efficient system rapidly convert tension into electrical signal 11 Here we show that plasma channel MscS-LIKE 10 (MSL10) from model Arabidopsis thaliana responds pulsed stretching rapid activation relaxation kinetics range one second. Under sinusoidal MSL10 presents a greater activity than under static stimulation behaves large bandpass “follower” without filtering 0.3 Hz. With localization aerial organs naturally oscillations, our results suggest represents molecular component universal oscillatory plants.