A mechanosensitive Ca2+ channel activity is dependent on the developmental regulator DEK1

Daniel Tran, Roberta Galletti, Enrique D. Neumann, Annick Dubois, Reza Sharif-Naeini, Anja Geitmann, Jean-Marie Frachisse, Olivier Hamant () and Gwyneth C. Ingram ()
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Daniel Tran: Université de Lyon, ENS de Lyon, UCB Lyon 1, CNRS, INRA
Roberta Galletti: Université de Lyon, ENS de Lyon, UCB Lyon 1, CNRS, INRA
Enrique D. Neumann: Université de Lyon, ENS de Lyon, UCB Lyon 1, CNRS, INRA
Annick Dubois: Université de Lyon, ENS de Lyon, UCB Lyon 1, CNRS, INRA
Reza Sharif-Naeini: McGill University
Anja Geitmann: McGill University
Jean-Marie Frachisse: Université Paris-Sud, Sciences Plant Saclay
Olivier Hamant: Université de Lyon, ENS de Lyon, UCB Lyon 1, CNRS, INRA
Gwyneth C. Ingram: Université de Lyon, ENS de Lyon, UCB Lyon 1, CNRS, INRA

Nature Communications, 2017, vol. 8, issue 1, 1-8

Abstract: Abstract Responses of cells to mechanical stress are thought to be critical in coordinating growth and development. Consistent with this idea, mechanically activated channels play important roles in animal development. For example, the PIEZO1 channel controls cell division and epithelial-layer integrity and is necessary for vascular development in mammals. In plants, the actual contribution of mechanoperception to development remains questionable because very few putative mechanosensors have been identified and the phenotypes of the corresponding mutants are rather mild. Here, we show that the Arabidopsis Defective Kernel 1 (DEK1) protein, which is essential for development beyond early embryogenesis, is associated with a mechanically activated Ca2+ current in planta, suggesting that perception of mechanical stress plays a critical role in plant development.

Date: 2017
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DOI: 10.1038/s41467-017-00878-w

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