A tension-adhesion feedback loop in plant epidermis - INRAE - Institut national de recherche pour l’agriculture, l’alimentation et l’environnement Access content directly
Journal Articles eLife Year : 2018

A tension-adhesion feedback loop in plant epidermis

Abstract

Mechanical forces have emerged as coordinating signals for most cell functions. Yet, because forces are invisible, mapping tensile stress patterns in tissues remains a major challenge in all kingdoms. Here we take advantage of the adhesion defects in the Arabidopsis mutant quasimodol (qual) to deduce stress patterns in tissues. By reducing the water potential and epidermal tension in planta, we rescued the adhesion defects in qua1, formally associating gaping and tensile stress patterns in the mutant. Using suboptimal water potential conditions, we revealed the relative contributions of shape- and growth-derived stress in prescribing maximal tension directions in aerial tissues. Consistently, the tension patterns deduced from the gaping patterns in qual matched the pattern of cortical microtubules, which are thought to align with maximal tension, in wild-type organs. Conversely, loss of epidermis continuity in the qual mutant hampered supracellular microtubule alignments, revealing that coordination through tensile stress requires cell-cell adhesion.
Fichier principal
Vignette du fichier
2018_Verger_eLife_1.pdf (5.32 Mo) Télécharger le fichier
Origin : Publisher files allowed on an open archive
Loading...

Dates and versions

hal-02621933 , version 1 (26-05-2020)

Licence

Attribution

Identifiers

Cite

Stéphane Verger, Yuchen Long, Arezki Boudaoud, Olivier O. Hamant. A tension-adhesion feedback loop in plant epidermis. eLife, 2018, 7, ⟨10.7554/elife.34460.001⟩. ⟨hal-02621933⟩
32 View
75 Download

Altmetric

Share

Gmail Facebook X LinkedIn More