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...
| Main Authors: | , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Public Library of Science (PLoS)
2008-04-01
|
| Series: | PLoS Computational Biology |
| Online Access: | https://www.ncbi.nlm.nih.gov/pmc/articles/pmid/18404203/?tool=EBI |
| _version_ | 1819198401117421568 |
|---|---|
| author | Maria F Laguna Steffen Bohn Eduardo A Jagla |
| author_facet | Maria F Laguna Steffen Bohn Eduardo A Jagla |
| author_sort | Maria F Laguna |
| collection | DOAJ |
| 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. |
| first_indexed | 2024-12-23T02:59:51Z |
| format | Article |
| id | doaj.art-4844ddeed79a4bed94159bd30490e831 |
| institution | Directory Open Access Journal |
| issn | 1553-734X 1553-7358 |
| language | English |
| last_indexed | 2024-12-23T02:59:51Z |
| publishDate | 2008-04-01 |
| publisher | Public Library of Science (PLoS) |
| record_format | Article |
| series | PLoS Computational Biology |
| spelling | doaj.art-4844ddeed79a4bed94159bd30490e8312022-12-21T18:02:27ZengPublic Library of Science (PLoS)PLoS Computational Biology1553-734X1553-73582008-04-0144e100005510.1371/journal.pcbi.1000055The role of elastic stresses on leaf venation morphogenesis.Maria F LagunaSteffen BohnEduardo A JaglaWe 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.https://www.ncbi.nlm.nih.gov/pmc/articles/pmid/18404203/?tool=EBI |
| spellingShingle | Maria F Laguna Steffen Bohn Eduardo A Jagla The role of elastic stresses on leaf venation morphogenesis. PLoS Computational Biology |
| title | 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_short | The role of elastic stresses on leaf venation morphogenesis. |
| title_sort | role of elastic stresses on leaf venation morphogenesis |
| url | https://www.ncbi.nlm.nih.gov/pmc/articles/pmid/18404203/?tool=EBI |
| work_keys_str_mv | AT mariaflaguna theroleofelasticstressesonleafvenationmorphogenesis AT steffenbohn theroleofelasticstressesonleafvenationmorphogenesis AT eduardoajagla theroleofelasticstressesonleafvenationmorphogenesis AT mariaflaguna roleofelasticstressesonleafvenationmorphogenesis AT steffenbohn roleofelasticstressesonleafvenationmorphogenesis AT eduardoajagla roleofelasticstressesonleafvenationmorphogenesis |