| Revista: | Genetics and molecular biology |
| Base de datos: | PERIÓDICA |
| Número de sistema: | 000459137 |
| ISSN: | 1415-4757 |
| Autors: | Simon, Luize1 Soares, Luana S1 Freitas, Loreta B1 |
| Institucions: | 1Universidade Federal do Rio Grande do Sul, Departamento de Genetica, Porto Alegre, Rio Grande do Sul. Brasil |
| Any: | 2023 |
| Volum: | 46 |
| Número: | 3 |
| País: | Brasil |
| Idioma: | Inglés |
| Tipo de documento: | Artículo |
| Enfoque: | Experimental, analítico |
| Resumen en inglés | Genetic polymorphism sharing between closely related and sympatric plant species could result from common ancestry, ancient or recent hybridization. Here we analyzed four Petunia species from the subtropical highland grasslands in southern South America based on nuclear diversity to disentangle the causes of high polymorphism sharing between them. We genotyped microsatellite loci, employed population genetic methods to estimate variability, species limits, and ancient and recent gene flow, and assigned individuals to genetic and taxonomic groups. Finally, we modeled evolutionary processes to determine the impact of Quaternary climate changes on species phylogenetic relationships. Our results indicated that genetic diversity was strongly influenced by expansion and habitat fragmentation during the Quaternary cycles. The extensive polymorphism sharing is mainly due to species’ common ancestry, and we did not discard ancient hybridization. Nowadays, niche differentiation is the primary driver for maintaining genetic and morphological limits between the four analysed Petunia species and there is no recent gene flow between them |
| Disciplines | Biología |
| Paraules clau: | Angiospermas, Genética, Petunia, Solanaceae, Polimorfismo, Diversidad genética, Especies simpátricas, Especiación |
| Keyword: | Angiosperms, Genetics, Polymorphism, Petunia, Solanaceae, Genetic diversity, Speciation, Sympatric species |
| Text complet: | Texto completo (Ver HTML) Texto completo (Ver PDF) |
