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Is cell polarity under mechanical control in plants?

Hamant, Olivier and Meyerowitz, Elliot M. and Traas, Jan (2011) Is cell polarity under mechanical control in plants? Plant Signaling and Behavior, 6 (1). pp. 137-139. ISSN 1559-2324. PMCID PMC3122027. doi:10.4161/psb.6.1.14269.

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Plant cells experience a tremendous amount of mechanical stress caused by turgor pressure. Because cells are glued to their neighbors by the middle lamella, supracellular patterns of physical forces are emerging during growth, usually leading to tension in the epidermis. Cortical microtubules have been shown to reorient in response to these mechanical stresses, and to resist them, indirectly via their impact on the anisotropic structure of the cell wall. In a recent study, we show that the polar localization of the auxin efflux carrier PIN1 can also be under the control of physical forces, thus linking cell growth rate and anisotropy by a common mechanical signal. Because of the known impact of auxin on the stiffness of the cell wall, this suggests that the mechanical properties of the extracellular matrix play a crucial signaling role in morphogenesis, notably controlling the polarity of the cell, as observed in animal systems.

Item Type:Article
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URLURL TypeDescription CentralArticle
Meyerowitz, Elliot M.0000-0003-4798-5153
Additional Information:© 2011 Taylor & Francis. Received 23 Nov 2010, Accepted 23 Nov 2010, Published online: 01 Jan 2011.
Subject Keywords:development, growth, auxin, microtubule, PIN1, stiffness, cell wall, biophysics, meristem
Issue or Number:1
PubMed Central ID:PMC3122027
Record Number:CaltechAUTHORS:20161205-135452724
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Official Citation:Olivier Hamant, Elliot M. Meyerowitz & Jan Traas (2011) Is cell polarity under mechanical control in plants?, Plant Signaling & Behavior, 6:1, 137-139, DOI: 10.4161/psb.6.1.14269
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:72563
Deposited By: Tony Diaz
Deposited On:07 Dec 2016 00:02
Last Modified:11 Nov 2021 05:03

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