Cargando…

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...

Descripción completa

Detalles Bibliográficos
Autores principales: Seale, Madeleine, Kiss, Annamaria, Bovio, Simone, Viola, Ignazio Maria, Mastropaolo, Enrico, Boudaoud, Arezki, Nakayama, Naomi
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2022
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
_version_ 1784702012385918976
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
work_keys_str_mv AT sealemadeleine dandelionpappusmorphingisactuatedbyradiallypatternedmaterialswelling
AT kissannamaria dandelionpappusmorphingisactuatedbyradiallypatternedmaterialswelling
AT boviosimone dandelionpappusmorphingisactuatedbyradiallypatternedmaterialswelling
AT violaignaziomaria dandelionpappusmorphingisactuatedbyradiallypatternedmaterialswelling
AT mastropaoloenrico dandelionpappusmorphingisactuatedbyradiallypatternedmaterialswelling
AT boudaoudarezki dandelionpappusmorphingisactuatedbyradiallypatternedmaterialswelling
AT nakayamanaomi dandelionpappusmorphingisactuatedbyradiallypatternedmaterialswelling