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Mechanosensitive ion channels contribute to mechanically evoked rapid leaflet movement in Mimosa pudica
Mechanoperception, the ability to perceive and respond to mechanical stimuli, is a common and fundamental property of all forms of life. Vascular plants such as Mimosa pudica use this function to protect themselves against herbivory. The mechanical stimulus caused by a landing insect triggers a rapi...
Autores principales: | , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Oxford University Press
2021
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8566232/ https://www.ncbi.nlm.nih.gov/pubmed/34734277 http://dx.doi.org/10.1093/plphys/kiab333 |
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author | Tran, Daniel Petitjean, Hugues Chebli, Youssef Geitmann, Anja Sharif-Naeini, Reza |
author_facet | Tran, Daniel Petitjean, Hugues Chebli, Youssef Geitmann, Anja Sharif-Naeini, Reza |
author_sort | Tran, Daniel |
collection | PubMed |
description | Mechanoperception, the ability to perceive and respond to mechanical stimuli, is a common and fundamental property of all forms of life. Vascular plants such as Mimosa pudica use this function to protect themselves against herbivory. The mechanical stimulus caused by a landing insect triggers a rapid closing of the leaflets that drives the potential pest away. While this thigmonastic movement is caused by ion fluxes accompanied by a rapid change of volume in the pulvini, the mechanism responsible for the detection of the mechanical stimulus remains poorly understood. Here, we examined the role of mechanosensitive ion channels in the first step of this evolutionarily conserved defense mechanism: the mechanically evoked closing of the leaflet. Our results demonstrate that the key site of mechanosensation in the Mimosa leaflets is the pulvinule, which expresses a stretch-activated chloride-permeable mechanosensitive ion channel. Blocking these channels partially prevents the closure of the leaflets following mechanical stimulation. These results demonstrate a direct relation between the activity of mechanosensitive ion channels and a central defense mechanism of M. pudica. |
format | Online Article Text |
id | pubmed-8566232 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2021 |
publisher | Oxford University Press |
record_format | MEDLINE/PubMed |
spelling | pubmed-85662322021-11-04 Mechanosensitive ion channels contribute to mechanically evoked rapid leaflet movement in Mimosa pudica Tran, Daniel Petitjean, Hugues Chebli, Youssef Geitmann, Anja Sharif-Naeini, Reza Plant Physiol Regular Issue Mechanoperception, the ability to perceive and respond to mechanical stimuli, is a common and fundamental property of all forms of life. Vascular plants such as Mimosa pudica use this function to protect themselves against herbivory. The mechanical stimulus caused by a landing insect triggers a rapid closing of the leaflets that drives the potential pest away. While this thigmonastic movement is caused by ion fluxes accompanied by a rapid change of volume in the pulvini, the mechanism responsible for the detection of the mechanical stimulus remains poorly understood. Here, we examined the role of mechanosensitive ion channels in the first step of this evolutionarily conserved defense mechanism: the mechanically evoked closing of the leaflet. Our results demonstrate that the key site of mechanosensation in the Mimosa leaflets is the pulvinule, which expresses a stretch-activated chloride-permeable mechanosensitive ion channel. Blocking these channels partially prevents the closure of the leaflets following mechanical stimulation. These results demonstrate a direct relation between the activity of mechanosensitive ion channels and a central defense mechanism of M. pudica. Oxford University Press 2021-08-10 /pmc/articles/PMC8566232/ /pubmed/34734277 http://dx.doi.org/10.1093/plphys/kiab333 Text en © The Author(s) 2021. Published by Oxford University Press on behalf of American Society of Plant Biologists. https://creativecommons.org/licenses/by-nc-nd/4.0/This is an Open Access article distributed under the terms of the Creative Commons Attribution-NonCommercial-NoDerivs licence (https://creativecommons.org/licenses/by-nc-nd/4.0/), which permits non-commercial reproduction and distribution of the work, in any medium, provided the original work is not altered or transformed in any way, and that the work is properly cited. For commercial re-use, please contact journals.permissions@oup.com |
spellingShingle | Regular Issue Tran, Daniel Petitjean, Hugues Chebli, Youssef Geitmann, Anja Sharif-Naeini, Reza Mechanosensitive ion channels contribute to mechanically evoked rapid leaflet movement in Mimosa pudica |
title | Mechanosensitive ion channels contribute to mechanically evoked rapid leaflet movement in Mimosa pudica |
title_full | Mechanosensitive ion channels contribute to mechanically evoked rapid leaflet movement in Mimosa pudica |
title_fullStr | Mechanosensitive ion channels contribute to mechanically evoked rapid leaflet movement in Mimosa pudica |
title_full_unstemmed | Mechanosensitive ion channels contribute to mechanically evoked rapid leaflet movement in Mimosa pudica |
title_short | Mechanosensitive ion channels contribute to mechanically evoked rapid leaflet movement in Mimosa pudica |
title_sort | mechanosensitive ion channels contribute to mechanically evoked rapid leaflet movement in mimosa pudica |
topic | Regular Issue |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8566232/ https://www.ncbi.nlm.nih.gov/pubmed/34734277 http://dx.doi.org/10.1093/plphys/kiab333 |
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