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Costs and benefits of reticulate leaf venation
BACKGROUND: Recent theoretical and empirical work has identified redundancy as one of the benefits of the reticulate form in the evolution of leaf vein networks. However, we know little about the costs of redundancy or how those costs depend on vein network geometry or topology. Here, we examined bo...
Autores principales: | , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
BioMed Central
2014
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4177576/ https://www.ncbi.nlm.nih.gov/pubmed/25234042 http://dx.doi.org/10.1186/s12870-014-0234-2 |
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author | Price, Charles A Weitz, Joshua S |
author_facet | Price, Charles A Weitz, Joshua S |
author_sort | Price, Charles A |
collection | PubMed |
description | BACKGROUND: Recent theoretical and empirical work has identified redundancy as one of the benefits of the reticulate form in the evolution of leaf vein networks. However, we know little about the costs of redundancy or how those costs depend on vein network geometry or topology. Here, we examined both costs and benefits to redundancy in 339 individual reticulate leaf networks comprising over 3.5 million vein segments. We compared levels of costs and benefits within reticulate networks to those within analogous networks without loops known as Maximum Spanning Trees (MSTs). RESULTS: We show that network robustness to varying degrees of simulated damage is positively correlated with structural indices of redundancy. We further show that leaf vein networks are topologically, geometrically and functionally more redundant than are MSTs. However, increased redundancy comes with minor costs in terms of increases in material allocation or decreases in conductance. We also show that full networks do not markedly decrease the distance to non-vein tissue in comparison to MSTs. CONCLUSIONS: These results suggest the evolutionary transition to the reticulate type of networks found in modern Angiosperm flora involved a relatively minor increase in material and conductance costs with significant benefits in terms of network redundancy. ELECTRONIC SUPPLEMENTARY MATERIAL: The online version of this article (doi:10.1186/s12870-014-0234-2) contains supplementary material, which is available to authorized users. |
format | Online Article Text |
id | pubmed-4177576 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2014 |
publisher | BioMed Central |
record_format | MEDLINE/PubMed |
spelling | pubmed-41775762014-09-29 Costs and benefits of reticulate leaf venation Price, Charles A Weitz, Joshua S BMC Plant Biol Research Article BACKGROUND: Recent theoretical and empirical work has identified redundancy as one of the benefits of the reticulate form in the evolution of leaf vein networks. However, we know little about the costs of redundancy or how those costs depend on vein network geometry or topology. Here, we examined both costs and benefits to redundancy in 339 individual reticulate leaf networks comprising over 3.5 million vein segments. We compared levels of costs and benefits within reticulate networks to those within analogous networks without loops known as Maximum Spanning Trees (MSTs). RESULTS: We show that network robustness to varying degrees of simulated damage is positively correlated with structural indices of redundancy. We further show that leaf vein networks are topologically, geometrically and functionally more redundant than are MSTs. However, increased redundancy comes with minor costs in terms of increases in material allocation or decreases in conductance. We also show that full networks do not markedly decrease the distance to non-vein tissue in comparison to MSTs. CONCLUSIONS: These results suggest the evolutionary transition to the reticulate type of networks found in modern Angiosperm flora involved a relatively minor increase in material and conductance costs with significant benefits in terms of network redundancy. ELECTRONIC SUPPLEMENTARY MATERIAL: The online version of this article (doi:10.1186/s12870-014-0234-2) contains supplementary material, which is available to authorized users. BioMed Central 2014-09-20 /pmc/articles/PMC4177576/ /pubmed/25234042 http://dx.doi.org/10.1186/s12870-014-0234-2 Text en © Price and Weitz; licensee BioMed Central Ltd. 2014 This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly credited. |
spellingShingle | Research Article Price, Charles A Weitz, Joshua S Costs and benefits of reticulate leaf venation |
title | Costs and benefits of reticulate leaf venation |
title_full | Costs and benefits of reticulate leaf venation |
title_fullStr | Costs and benefits of reticulate leaf venation |
title_full_unstemmed | Costs and benefits of reticulate leaf venation |
title_short | Costs and benefits of reticulate leaf venation |
title_sort | costs and benefits of reticulate leaf venation |
topic | Research Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4177576/ https://www.ncbi.nlm.nih.gov/pubmed/25234042 http://dx.doi.org/10.1186/s12870-014-0234-2 |
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