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Ecological interactions shape the evolution of flower color in communities across a temperate biodiversity hotspot
Processes driving the divergence of floral traits may be integral to the extraordinary richness of flowering plants and the assembly of diverse plant communities. Several models of pollinator‐mediated floral evolution have been proposed; floral divergence may (i) be directly involved in driving spec...
Autores principales: | , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
John Wiley and Sons Inc.
2021
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8190448/ https://www.ncbi.nlm.nih.gov/pubmed/34136275 http://dx.doi.org/10.1002/evl3.225 |
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author | Skeels, Alexander Dinnage, Russell Medina, Iliana Cardillo, Marcel |
author_facet | Skeels, Alexander Dinnage, Russell Medina, Iliana Cardillo, Marcel |
author_sort | Skeels, Alexander |
collection | PubMed |
description | Processes driving the divergence of floral traits may be integral to the extraordinary richness of flowering plants and the assembly of diverse plant communities. Several models of pollinator‐mediated floral evolution have been proposed; floral divergence may (i) be directly involved in driving speciation or may occur after speciation driven by (ii) drift or local adaptation in allopatry or (iii) negative interactions between species in sympatry. Here, we generate predictions for patterns of trait divergence and community assembly expected under these three models, and test these predictions in Hakea (Proteaceae), a diverse genus in the Southwest Australian biodiversity hotspot. We quantified functional richness for two key floral traits (pistil length and flower color), as well as phylogenetic distances between species, across ecological communities, and compared these to patterns generated from null models of community assembly. We also estimated the statistical relationship between rates of trait evolution and lineage diversification across the phylogeny. Patterns of community assembly suggest that flower color, but not floral phenology or morphology, or phylogenetic relatedness, is more divergent in communities than expected. Rates of lineage diversification and flower color evolution were negatively correlated across the phylogeny and rates of flower colour evolution were positively related to branching times. These results support a role for diversity‐dependent species interactions driving floral divergence during the Hakea radiation, contributing to the development of the extraordinary species richness of southwest Australia. |
format | Online Article Text |
id | pubmed-8190448 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2021 |
publisher | John Wiley and Sons Inc. |
record_format | MEDLINE/PubMed |
spelling | pubmed-81904482021-06-15 Ecological interactions shape the evolution of flower color in communities across a temperate biodiversity hotspot Skeels, Alexander Dinnage, Russell Medina, Iliana Cardillo, Marcel Evol Lett Letters Processes driving the divergence of floral traits may be integral to the extraordinary richness of flowering plants and the assembly of diverse plant communities. Several models of pollinator‐mediated floral evolution have been proposed; floral divergence may (i) be directly involved in driving speciation or may occur after speciation driven by (ii) drift or local adaptation in allopatry or (iii) negative interactions between species in sympatry. Here, we generate predictions for patterns of trait divergence and community assembly expected under these three models, and test these predictions in Hakea (Proteaceae), a diverse genus in the Southwest Australian biodiversity hotspot. We quantified functional richness for two key floral traits (pistil length and flower color), as well as phylogenetic distances between species, across ecological communities, and compared these to patterns generated from null models of community assembly. We also estimated the statistical relationship between rates of trait evolution and lineage diversification across the phylogeny. Patterns of community assembly suggest that flower color, but not floral phenology or morphology, or phylogenetic relatedness, is more divergent in communities than expected. Rates of lineage diversification and flower color evolution were negatively correlated across the phylogeny and rates of flower colour evolution were positively related to branching times. These results support a role for diversity‐dependent species interactions driving floral divergence during the Hakea radiation, contributing to the development of the extraordinary species richness of southwest Australia. John Wiley and Sons Inc. 2021-04-28 /pmc/articles/PMC8190448/ /pubmed/34136275 http://dx.doi.org/10.1002/evl3.225 Text en © 2021 The Authors. Evolution Letters published by Wiley Periodicals LLC on behalf of Society for the Study of Evolution (SSE) and European Society for Evolutionary Biology (ESEB). https://creativecommons.org/licenses/by/4.0/This is an open access article under the terms of the http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited. |
spellingShingle | Letters Skeels, Alexander Dinnage, Russell Medina, Iliana Cardillo, Marcel Ecological interactions shape the evolution of flower color in communities across a temperate biodiversity hotspot |
title | Ecological interactions shape the evolution of flower color in communities across a temperate biodiversity hotspot |
title_full | Ecological interactions shape the evolution of flower color in communities across a temperate biodiversity hotspot |
title_fullStr | Ecological interactions shape the evolution of flower color in communities across a temperate biodiversity hotspot |
title_full_unstemmed | Ecological interactions shape the evolution of flower color in communities across a temperate biodiversity hotspot |
title_short | Ecological interactions shape the evolution of flower color in communities across a temperate biodiversity hotspot |
title_sort | ecological interactions shape the evolution of flower color in communities across a temperate biodiversity hotspot |
topic | Letters |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8190448/ https://www.ncbi.nlm.nih.gov/pubmed/34136275 http://dx.doi.org/10.1002/evl3.225 |
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