The role of elastic stresses on leaf venation morphogenesis.

We explore the possible role of elastic mismatch between epidermis and mesophyll as a driving force for the development of leaf venation. The current prevalent 'canalization' hypothesis for the formation of veins claims that the transport of the hormone auxin out of the leaves triggers cel...

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Autores principales:	Maria F Laguna, Steffen Bohn, Eduardo A Jagla
Formato:	article
Lenguaje:	EN
Publicado:	Public Library of Science (PLoS) 2008
Materias:	Biology (General) QH301-705.5
Acceso en línea:	https://doaj.org/article/4844ddeed79a4bed94159bd30490e831
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spelling	oai:doaj.org-article:4844ddeed79a4bed94159bd30490e8312021-11-25T05:41:20ZThe role of elastic stresses on leaf venation morphogenesis.1553-734X1553-735810.1371/journal.pcbi.1000055https://doaj.org/article/4844ddeed79a4bed94159bd30490e8312008-04-01T00:00:00Zhttps://www.ncbi.nlm.nih.gov/pmc/articles/pmid/18404203/?tool=EBIhttps://doaj.org/toc/1553-734Xhttps://doaj.org/toc/1553-7358We explore the possible role of elastic mismatch between epidermis and mesophyll as a driving force for the development of leaf venation. The current prevalent 'canalization' hypothesis for the formation of veins claims that the transport of the hormone auxin out of the leaves triggers cell differentiation to form veins. Although there is evidence that auxin plays a fundamental role in vein formation, the simple canalization mechanism may not be enough to explain some features observed in the vascular system of leaves, in particular, the abundance of vein loops. We present a model based on the existence of mechanical instabilities that leads very naturally to hierarchical patterns with a large number of closed loops. When applied to the structure of high-order veins, the numerical results show the same qualitative features as actual venation patterns and, furthermore, have the same statistical properties. We argue that the agreement between actual and simulated patterns provides strong evidence for the role of mechanical effects on venation development.Maria F LagunaSteffen BohnEduardo A JaglaPublic Library of Science (PLoS)articleBiology (General)QH301-705.5ENPLoS Computational Biology, Vol 4, Iss 4, p e1000055 (2008)
institution	DOAJ
collection	DOAJ
language	EN
topic	Biology (General) QH301-705.5
spellingShingle	Biology (General) QH301-705.5 Maria F Laguna Steffen Bohn Eduardo A Jagla The role of elastic stresses on leaf venation morphogenesis.
description	We explore the possible role of elastic mismatch between epidermis and mesophyll as a driving force for the development of leaf venation. The current prevalent 'canalization' hypothesis for the formation of veins claims that the transport of the hormone auxin out of the leaves triggers cell differentiation to form veins. Although there is evidence that auxin plays a fundamental role in vein formation, the simple canalization mechanism may not be enough to explain some features observed in the vascular system of leaves, in particular, the abundance of vein loops. We present a model based on the existence of mechanical instabilities that leads very naturally to hierarchical patterns with a large number of closed loops. When applied to the structure of high-order veins, the numerical results show the same qualitative features as actual venation patterns and, furthermore, have the same statistical properties. We argue that the agreement between actual and simulated patterns provides strong evidence for the role of mechanical effects on venation development.
format	article
author	Maria F Laguna Steffen Bohn Eduardo A Jagla
author_facet	Maria F Laguna Steffen Bohn Eduardo A Jagla
author_sort	Maria F Laguna
title	The role of elastic stresses on leaf venation morphogenesis.
title_short	The role of elastic stresses on leaf venation morphogenesis.
title_full	The role of elastic stresses on leaf venation morphogenesis.
title_fullStr	The role of elastic stresses on leaf venation morphogenesis.
title_full_unstemmed	The role of elastic stresses on leaf venation morphogenesis.
title_sort	role of elastic stresses on leaf venation morphogenesis.
publisher	Public Library of Science (PLoS)
publishDate	2008
url	https://doaj.org/article/4844ddeed79a4bed94159bd30490e831
work_keys_str_mv	AT mariaflaguna theroleofelasticstressesonleafvenationmorphogenesis AT steffenbohn theroleofelasticstressesonleafvenationmorphogenesis AT eduardoajagla theroleofelasticstressesonleafvenationmorphogenesis AT mariaflaguna roleofelasticstressesonleafvenationmorphogenesis AT steffenbohn roleofelasticstressesonleafvenationmorphogenesis AT eduardoajagla roleofelasticstressesonleafvenationmorphogenesis
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The role of elastic stresses on leaf venation morphogenesis.

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