Linking environmental adaptation and genetic structure to thebiogeography of flower colour lineages in Lysimachia monelli (Primulaceae)
Reproductive traits such as flower colour can have a profound influence on the diversification of plant species, making understanding their evolutionary ramifications one ofthe foremost challenges for evolutionary biologists. Lysimachia monelli is a Mediterranean endemic with two markedly divergent flowe...
| Autores: | , , , , , |
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| Tipo de recurso: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2025 |
| País: | España |
| Institución: | Universidad de Sevilla (US) |
| Repositorio: | idUS. Depósito de Investigación de la Universidad de Sevilla |
| OAI Identifier: | oai:idus.us.es:11441/181716 |
| Acceso en línea: | https://hdl.handle.net/11441/181716 https://doi.org/10.1111/plb.70100 |
| Access Level: | acceso abierto |
| Palabra clave: | Anagallis Environmental niche model Fowercolour polymorphism Mediterranean endemism Nuclear microsatellites Phylogeography Self-incompatibility |
| Sumario: | Reproductive traits such as flower colour can have a profound influence on the diversification of plant species, making understanding their evolutionary ramifications one ofthe foremost challenges for evolutionary biologists. Lysimachia monelli is a Mediterranean endemic with two markedly divergent flower colour lineages, blue and orange,which do not coexist within the same populations. We examined the relationship between lineage divergence and environmental nichedifferentiation for the two lineages. Genetic relationships among individuals from 21blue and six orange populations were assessed using seven nSSR markers. Environmental niche models were projected for the present and three past periods. Low gene flow between populations and elevated heterozygosity were pervasive acrossL. monelli populations. Western populations of both orange and blue lineages hadhigher genetic diversity than their eastern counterparts, with blue lineages displayinghigher diversity than orange lineages. There was conspicuous genetic differentiation between colour lineages, and populations were aggregated into five nSSR clusters. Colour lineages occupied distinct environmental niches, with lineage-specific habitat suit-ability primarily influenced by variations in annual precipitation and solar radiation.Bioclimatic fluctuations in the region appear to have driven the divergence of L. mon-elli populations along a west-to-east gradient. The findings suggest comprehensive geographic and genetic separation of the two L.monelli colour lineages, suggesting an advanced stage of speciation. |
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