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Mechanical factors contributing to the Venus flytrap’s rate-dependent response to stimuli
The sensory hairs of the Venus flytrap (Dionaea muscipula Ellis) detect mechanical stimuli imparted by their prey and fire bursts of electrical signals called action potentials (APs). APs are elicited when the hairs are sufficiently stimulated and two consecutive APs can trigger closure of the trap....
Autores principales: | , , , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Springer Berlin Heidelberg
2021
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8595191/ https://www.ncbi.nlm.nih.gov/pubmed/34431032 http://dx.doi.org/10.1007/s10237-021-01507-8 |
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author | Saikia, Eashan Läubli, Nino F. Vogler, Hannes Rüggeberg, Markus Herrmann, Hans J. Burgert, Ingo Burri, Jan T. Nelson, Bradley J. Grossniklaus, Ueli Wittel, Falk K. |
author_facet | Saikia, Eashan Läubli, Nino F. Vogler, Hannes Rüggeberg, Markus Herrmann, Hans J. Burgert, Ingo Burri, Jan T. Nelson, Bradley J. Grossniklaus, Ueli Wittel, Falk K. |
author_sort | Saikia, Eashan |
collection | PubMed |
description | The sensory hairs of the Venus flytrap (Dionaea muscipula Ellis) detect mechanical stimuli imparted by their prey and fire bursts of electrical signals called action potentials (APs). APs are elicited when the hairs are sufficiently stimulated and two consecutive APs can trigger closure of the trap. Earlier experiments have identified thresholds for the relevant stimulus parameters, namely the angular displacement [Formula: see text] and angular velocity [Formula: see text] . However, these experiments could not trace the deformation of the trigger hair’s sensory cells, which are known to transduce the mechanical stimulus. To understand the kinematics at the cellular level, we investigate the role of two relevant mechanical phenomena: viscoelasticity and intercellular fluid transport using a multi-scale numerical model of the sensory hair. We hypothesize that the combined influence of these two phenomena and [Formula: see text] contribute to the flytrap’s rate-dependent response to stimuli. In this study, we firstly perform sustained deflection tests on the hair to estimate the viscoelastic material properties of the tissue. Thereafter, through simulations of hair deflection tests at different loading rates, we were able to establish a multi-scale kinematic link between [Formula: see text] and the cell wall stretch [Formula: see text] . Furthermore, we find that the rate at which [Formula: see text] evolves during a stimulus is also proportional to [Formula: see text] . This suggests that mechanosensitive ion channels, expected to be stretch-activated and localized in the plasma membrane of the sensory cells, could be additionally sensitive to the rate at which stretch is applied. |
format | Online Article Text |
id | pubmed-8595191 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2021 |
publisher | Springer Berlin Heidelberg |
record_format | MEDLINE/PubMed |
spelling | pubmed-85951912021-11-24 Mechanical factors contributing to the Venus flytrap’s rate-dependent response to stimuli Saikia, Eashan Läubli, Nino F. Vogler, Hannes Rüggeberg, Markus Herrmann, Hans J. Burgert, Ingo Burri, Jan T. Nelson, Bradley J. Grossniklaus, Ueli Wittel, Falk K. Biomech Model Mechanobiol Original Paper The sensory hairs of the Venus flytrap (Dionaea muscipula Ellis) detect mechanical stimuli imparted by their prey and fire bursts of electrical signals called action potentials (APs). APs are elicited when the hairs are sufficiently stimulated and two consecutive APs can trigger closure of the trap. Earlier experiments have identified thresholds for the relevant stimulus parameters, namely the angular displacement [Formula: see text] and angular velocity [Formula: see text] . However, these experiments could not trace the deformation of the trigger hair’s sensory cells, which are known to transduce the mechanical stimulus. To understand the kinematics at the cellular level, we investigate the role of two relevant mechanical phenomena: viscoelasticity and intercellular fluid transport using a multi-scale numerical model of the sensory hair. We hypothesize that the combined influence of these two phenomena and [Formula: see text] contribute to the flytrap’s rate-dependent response to stimuli. In this study, we firstly perform sustained deflection tests on the hair to estimate the viscoelastic material properties of the tissue. Thereafter, through simulations of hair deflection tests at different loading rates, we were able to establish a multi-scale kinematic link between [Formula: see text] and the cell wall stretch [Formula: see text] . Furthermore, we find that the rate at which [Formula: see text] evolves during a stimulus is also proportional to [Formula: see text] . This suggests that mechanosensitive ion channels, expected to be stretch-activated and localized in the plasma membrane of the sensory cells, could be additionally sensitive to the rate at which stretch is applied. Springer Berlin Heidelberg 2021-08-24 2021 /pmc/articles/PMC8595191/ /pubmed/34431032 http://dx.doi.org/10.1007/s10237-021-01507-8 Text en © The Author(s) 2021, corrected publication, 2021 https://creativecommons.org/licenses/by/4.0/Open AccessThis article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) . |
spellingShingle | Original Paper Saikia, Eashan Läubli, Nino F. Vogler, Hannes Rüggeberg, Markus Herrmann, Hans J. Burgert, Ingo Burri, Jan T. Nelson, Bradley J. Grossniklaus, Ueli Wittel, Falk K. Mechanical factors contributing to the Venus flytrap’s rate-dependent response to stimuli |
title | Mechanical factors contributing to the Venus flytrap’s rate-dependent response to stimuli |
title_full | Mechanical factors contributing to the Venus flytrap’s rate-dependent response to stimuli |
title_fullStr | Mechanical factors contributing to the Venus flytrap’s rate-dependent response to stimuli |
title_full_unstemmed | Mechanical factors contributing to the Venus flytrap’s rate-dependent response to stimuli |
title_short | Mechanical factors contributing to the Venus flytrap’s rate-dependent response to stimuli |
title_sort | mechanical factors contributing to the venus flytrap’s rate-dependent response to stimuli |
topic | Original Paper |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8595191/ https://www.ncbi.nlm.nih.gov/pubmed/34431032 http://dx.doi.org/10.1007/s10237-021-01507-8 |
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