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Dandelion pappus morphing is actuated by radially patterned material swelling
Plants generate motion by absorbing and releasing water. Many Asteraceae plants, such as the dandelion, have a hairy pappus that can close depending on moisture levels to modify dispersal. Here we demonstrate the relationship between structure and function of the underlying hygroscopic actuator. By...
Autores principales: | , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Nature Publishing Group UK
2022
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9076835/ https://www.ncbi.nlm.nih.gov/pubmed/35523798 http://dx.doi.org/10.1038/s41467-022-30245-3 |
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author | Seale, Madeleine Kiss, Annamaria Bovio, Simone Viola, Ignazio Maria Mastropaolo, Enrico Boudaoud, Arezki Nakayama, Naomi |
author_facet | Seale, Madeleine Kiss, Annamaria Bovio, Simone Viola, Ignazio Maria Mastropaolo, Enrico Boudaoud, Arezki Nakayama, Naomi |
author_sort | Seale, Madeleine |
collection | PubMed |
description | Plants generate motion by absorbing and releasing water. Many Asteraceae plants, such as the dandelion, have a hairy pappus that can close depending on moisture levels to modify dispersal. Here we demonstrate the relationship between structure and function of the underlying hygroscopic actuator. By investigating the structure and properties of the actuator cell walls, we identify the mechanism by which the dandelion pappus closes. We developed a structural computational model that can capture observed pappus closing and used it to explore the critical design features. We find that the actuator relies on the radial arrangement of vascular bundles and surrounding tissues around a central cavity. This allows heterogeneous swelling in a radially symmetric manner to co-ordinate movements of the hairs attached at the upper flank. This actuator is a derivative of bilayer structures, which is radial and can synchronise the movement of a planar or lateral attachment. The simple, material-based mechanism presents a promising biomimetic potential in robotics and functional materials. |
format | Online Article Text |
id | pubmed-9076835 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2022 |
publisher | Nature Publishing Group UK |
record_format | MEDLINE/PubMed |
spelling | pubmed-90768352022-05-08 Dandelion pappus morphing is actuated by radially patterned material swelling Seale, Madeleine Kiss, Annamaria Bovio, Simone Viola, Ignazio Maria Mastropaolo, Enrico Boudaoud, Arezki Nakayama, Naomi Nat Commun Article Plants generate motion by absorbing and releasing water. Many Asteraceae plants, such as the dandelion, have a hairy pappus that can close depending on moisture levels to modify dispersal. Here we demonstrate the relationship between structure and function of the underlying hygroscopic actuator. By investigating the structure and properties of the actuator cell walls, we identify the mechanism by which the dandelion pappus closes. We developed a structural computational model that can capture observed pappus closing and used it to explore the critical design features. We find that the actuator relies on the radial arrangement of vascular bundles and surrounding tissues around a central cavity. This allows heterogeneous swelling in a radially symmetric manner to co-ordinate movements of the hairs attached at the upper flank. This actuator is a derivative of bilayer structures, which is radial and can synchronise the movement of a planar or lateral attachment. The simple, material-based mechanism presents a promising biomimetic potential in robotics and functional materials. Nature Publishing Group UK 2022-05-06 /pmc/articles/PMC9076835/ /pubmed/35523798 http://dx.doi.org/10.1038/s41467-022-30245-3 Text en © The Author(s) 2022 https://creativecommons.org/licenses/by/4.0/Open Access This 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 license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license 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 license, visit http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) . |
spellingShingle | Article Seale, Madeleine Kiss, Annamaria Bovio, Simone Viola, Ignazio Maria Mastropaolo, Enrico Boudaoud, Arezki Nakayama, Naomi Dandelion pappus morphing is actuated by radially patterned material swelling |
title | Dandelion pappus morphing is actuated by radially patterned material swelling |
title_full | Dandelion pappus morphing is actuated by radially patterned material swelling |
title_fullStr | Dandelion pappus morphing is actuated by radially patterned material swelling |
title_full_unstemmed | Dandelion pappus morphing is actuated by radially patterned material swelling |
title_short | Dandelion pappus morphing is actuated by radially patterned material swelling |
title_sort | dandelion pappus morphing is actuated by radially patterned material swelling |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9076835/ https://www.ncbi.nlm.nih.gov/pubmed/35523798 http://dx.doi.org/10.1038/s41467-022-30245-3 |
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