Root growth and force chains in a granular soil
Roots provide basic functions to plants such as water and nutrient uptake and anchoring in soil. The growth and development of root systems contribute to colonizing the surrounding soil and optimizing the access to resources. It is generally known that the variability of plant root architecture results from the combination of genetic, physiological, and environmental factors, in particular soil mechanical resistance. However, this last factor has never been investigated at the soil grain scale for roots. In this paper, we are interested in the effect of the disordered texture of granular soils on the evolution of forces experienced by the root cap during its growth. We introduce a numerical model in which the root is modeled as a flexible self-elongating tube that probes a soil composed of solid particles. By means of extensive simulations, we show that the forces exerted on the root cap reflect interparticle force chains. Our simulations also show that the mean force declines exponentially with root flexibility, the highest force corresponding to the soil hardness. Furthermore, we find that this functional dependence is characterized by a single dimensionless parameter that combines granular structure and root bending stiffness. This finding will be useful to further address the biological issues of mechanosensing and thigmomorphogenesis in plant roots.
Main Authors: | , , , |
---|---|
Format: | article biblioteca |
Language: | eng |
Subjects: | F62 - Physiologie végétale - Croissance et développement, P33 - Chimie et physique du sol, enracinement, système racinaire, texture du sol, http://aims.fao.org/aos/agrovoc/c_6649, http://aims.fao.org/aos/agrovoc/c_16034, http://aims.fao.org/aos/agrovoc/c_7199, |
Online Access: | http://agritrop.cirad.fr/589944/ http://agritrop.cirad.fr/589944/1/Fakih%26al_2018_ArXive.pdf |
Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
id |
dig-cirad-fr-589944 |
---|---|
record_format |
koha |
spelling |
dig-cirad-fr-5899442024-01-29T01:25:30Z http://agritrop.cirad.fr/589944/ http://agritrop.cirad.fr/589944/ Root growth and force chains in a granular soil. Fakih Mahmoud, Delenne Jean-Yves, Radjai Farhang, Fourcaud Thierry. 2019. Physical Review. E, 99 (4):042903, 10 p.https://doi.org/10.1103/PhysRevE.99.042903 <https://doi.org/10.1103/PhysRevE.99.042903> Root growth and force chains in a granular soil Fakih, Mahmoud Delenne, Jean-Yves Radjai, Farhang Fourcaud, Thierry eng 2019 Physical Review. E F62 - Physiologie végétale - Croissance et développement P33 - Chimie et physique du sol enracinement système racinaire texture du sol http://aims.fao.org/aos/agrovoc/c_6649 http://aims.fao.org/aos/agrovoc/c_16034 http://aims.fao.org/aos/agrovoc/c_7199 Roots provide basic functions to plants such as water and nutrient uptake and anchoring in soil. The growth and development of root systems contribute to colonizing the surrounding soil and optimizing the access to resources. It is generally known that the variability of plant root architecture results from the combination of genetic, physiological, and environmental factors, in particular soil mechanical resistance. However, this last factor has never been investigated at the soil grain scale for roots. In this paper, we are interested in the effect of the disordered texture of granular soils on the evolution of forces experienced by the root cap during its growth. We introduce a numerical model in which the root is modeled as a flexible self-elongating tube that probes a soil composed of solid particles. By means of extensive simulations, we show that the forces exerted on the root cap reflect interparticle force chains. Our simulations also show that the mean force declines exponentially with root flexibility, the highest force corresponding to the soil hardness. Furthermore, we find that this functional dependence is characterized by a single dimensionless parameter that combines granular structure and root bending stiffness. This finding will be useful to further address the biological issues of mechanosensing and thigmomorphogenesis in plant roots. article info:eu-repo/semantics/article Journal Article info:eu-repo/semantics/acceptedVersion http://agritrop.cirad.fr/589944/1/Fakih%26al_2018_ArXive.pdf text cc_by_nc_nd info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by-nc-nd/4.0/ https://doi.org/10.1103/PhysRevE.99.042903 10.1103/PhysRevE.99.042903 info:eu-repo/semantics/altIdentifier/doi/10.1103/PhysRevE.99.042903 info:eu-repo/semantics/altIdentifier/purl/https://doi.org/10.1103/PhysRevE.99.042903 |
institution |
CIRAD FR |
collection |
DSpace |
country |
Francia |
countrycode |
FR |
component |
Bibliográfico |
access |
En linea |
databasecode |
dig-cirad-fr |
tag |
biblioteca |
region |
Europa del Oeste |
libraryname |
Biblioteca del CIRAD Francia |
language |
eng |
topic |
F62 - Physiologie végétale - Croissance et développement P33 - Chimie et physique du sol enracinement système racinaire texture du sol http://aims.fao.org/aos/agrovoc/c_6649 http://aims.fao.org/aos/agrovoc/c_16034 http://aims.fao.org/aos/agrovoc/c_7199 F62 - Physiologie végétale - Croissance et développement P33 - Chimie et physique du sol enracinement système racinaire texture du sol http://aims.fao.org/aos/agrovoc/c_6649 http://aims.fao.org/aos/agrovoc/c_16034 http://aims.fao.org/aos/agrovoc/c_7199 |
spellingShingle |
F62 - Physiologie végétale - Croissance et développement P33 - Chimie et physique du sol enracinement système racinaire texture du sol http://aims.fao.org/aos/agrovoc/c_6649 http://aims.fao.org/aos/agrovoc/c_16034 http://aims.fao.org/aos/agrovoc/c_7199 F62 - Physiologie végétale - Croissance et développement P33 - Chimie et physique du sol enracinement système racinaire texture du sol http://aims.fao.org/aos/agrovoc/c_6649 http://aims.fao.org/aos/agrovoc/c_16034 http://aims.fao.org/aos/agrovoc/c_7199 Fakih, Mahmoud Delenne, Jean-Yves Radjai, Farhang Fourcaud, Thierry Root growth and force chains in a granular soil |
description |
Roots provide basic functions to plants such as water and nutrient uptake and anchoring in soil. The growth and development of root systems contribute to colonizing the surrounding soil and optimizing the access to resources. It is generally known that the variability of plant root architecture results from the combination of genetic, physiological, and environmental factors, in particular soil mechanical resistance. However, this last factor has never been investigated at the soil grain scale for roots. In this paper, we are interested in the effect of the disordered texture of granular soils on the evolution of forces experienced by the root cap during its growth. We introduce a numerical model in which the root is modeled as a flexible self-elongating tube that probes a soil composed of solid particles. By means of extensive simulations, we show that the forces exerted on the root cap reflect interparticle force chains. Our simulations also show that the mean force declines exponentially with root flexibility, the highest force corresponding to the soil hardness. Furthermore, we find that this functional dependence is characterized by a single dimensionless parameter that combines granular structure and root bending stiffness. This finding will be useful to further address the biological issues of mechanosensing and thigmomorphogenesis in plant roots. |
format |
article |
topic_facet |
F62 - Physiologie végétale - Croissance et développement P33 - Chimie et physique du sol enracinement système racinaire texture du sol http://aims.fao.org/aos/agrovoc/c_6649 http://aims.fao.org/aos/agrovoc/c_16034 http://aims.fao.org/aos/agrovoc/c_7199 |
author |
Fakih, Mahmoud Delenne, Jean-Yves Radjai, Farhang Fourcaud, Thierry |
author_facet |
Fakih, Mahmoud Delenne, Jean-Yves Radjai, Farhang Fourcaud, Thierry |
author_sort |
Fakih, Mahmoud |
title |
Root growth and force chains in a granular soil |
title_short |
Root growth and force chains in a granular soil |
title_full |
Root growth and force chains in a granular soil |
title_fullStr |
Root growth and force chains in a granular soil |
title_full_unstemmed |
Root growth and force chains in a granular soil |
title_sort |
root growth and force chains in a granular soil |
url |
http://agritrop.cirad.fr/589944/ http://agritrop.cirad.fr/589944/1/Fakih%26al_2018_ArXive.pdf |
work_keys_str_mv |
AT fakihmahmoud rootgrowthandforcechainsinagranularsoil AT delennejeanyves rootgrowthandforcechainsinagranularsoil AT radjaifarhang rootgrowthandforcechainsinagranularsoil AT fourcaudthierry rootgrowthandforcechainsinagranularsoil |
_version_ |
1792499593696509952 |