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A tension-adhesion feedback loop in plant epidermis

  1. Stéphane Verger  Is a corresponding author
  2. Yuchen Long
  3. Arezki Boudaoud
  4. Olivier Hamant  Is a corresponding author
  1. Université de Lyon, ENS de Lyon, France
Research Article
  • Cited 17
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Cite this article as: eLife 2018;7:e34460 doi: 10.7554/eLife.34460

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 quasimodo1 (qua1) 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 qua1 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 qua1 mutant hampered supracellular microtubule alignments, revealing that coordination through tensile stress requires cell-cell adhesion.

Article and author information

Author details

  1. Stéphane Verger

    Laboratoire de Reproduction et Développement des Plantes, Université de Lyon, ENS de Lyon, Lyon, France
    For correspondence
    stephane.verger@ens-lyon.fr
    Competing interests
    The authors declare that no competing interests exist.
    ORCID icon "This ORCID iD identifies the author of this article:" 0000-0003-3643-3978
  2. Yuchen Long

    Laboratoire de Reproduction et Développement des Plantes, Université de Lyon, ENS de Lyon, Lyon, France
    Competing interests
    The authors declare that no competing interests exist.
  3. Arezki Boudaoud

    Laboratoire de Reproduction de développement des plantes, Institut national de la recherche agronomique, Centre national de la recherche scientifique, ENS Lyon, Claude Bernard University Lyon, Université de Lyon, ENS de Lyon, Lyon, France
    Competing interests
    The authors declare that no competing interests exist.
  4. Olivier Hamant

    Laboratoire de Reproduction de développement des plantes, Institut national de la recherche agronomique, Centre national de la recherche scientifique, ENS Lyon, Claude Bernard University Lyon, Université de Lyon, ENS de Lyon, Lyon, France
    For correspondence
    Olivier.Hamant@ens-lyon.fr
    Competing interests
    The authors declare that no competing interests exist.
    ORCID icon "This ORCID iD identifies the author of this article:" 0000-0001-6906-6620

Funding

H2020 European Research Council (ERC-2013-CoG-615739)

  • Olivier Hamant

European Molecular Biology Organization (EMBO ALTF 168-2015)

  • Yuchen Long

H2020 European Research Council (ERC-2012-StG-307387)

  • Arezki Boudaoud

The funders had no role in study design, data collection and interpretation, or the decision to submit the work for publication.

Reviewing Editor

  1. Dominique C Bergmann, Stanford University/HHMI, United States

Publication history

  1. Received: December 18, 2017
  2. Accepted: April 20, 2018
  3. Accepted Manuscript published: April 23, 2018 (version 1)
  4. Version of Record published: May 22, 2018 (version 2)
  5. Version of Record updated: October 16, 2018 (version 3)

Copyright

© 2018, Verger et al.

This article is distributed under the terms of the Creative Commons Attribution License permitting unrestricted use and redistribution provided that the original author and source are credited.

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