Disentangling the causes of high polymorphism sharing in sympatric Petunia species from subtropical highland grasslands: insights from nuclear diversity
Abstract 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 disenta...
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| Format: | Article |
| Language: | English |
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Sociedade Brasileira de Genética
2023-10-01
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| Series: | Genetics and Molecular Biology |
| Subjects: | |
| Online Access: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572023000600102&lng=en&tlng=en |
| _version_ | 1797644543354470400 |
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| author | Luize Simon Luana S. Soares Loreta B. Freitas |
| author_facet | Luize Simon Luana S. Soares Loreta B. Freitas |
| author_sort | Luize Simon |
| collection | DOAJ |
| description | Abstract 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. |
| first_indexed | 2024-03-11T14:32:07Z |
| format | Article |
| id | doaj.art-42781c82427b437faefebc38c1735cf4 |
| institution | Directory Open Access Journal |
| issn | 1678-4685 |
| language | English |
| last_indexed | 2024-03-11T14:32:07Z |
| publishDate | 2023-10-01 |
| publisher | Sociedade Brasileira de Genética |
| record_format | Article |
| series | Genetics and Molecular Biology |
| spelling | doaj.art-42781c82427b437faefebc38c1735cf42023-10-31T07:50:34ZengSociedade Brasileira de GenéticaGenetics and Molecular Biology1678-46852023-10-01463 suppl 110.1590/1678-4685-gmb-2023-0159Disentangling the causes of high polymorphism sharing in sympatric Petunia species from subtropical highland grasslands: insights from nuclear diversityLuize SimonLuana S. SoaresLoreta B. Freitashttps://orcid.org/0000-0002-0728-4945Abstract 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.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572023000600102&lng=en&tlng=enPetuniaSolanaceaegenetic diversityspeciationsubtropical highland grassland |
| spellingShingle | Luize Simon Luana S. Soares Loreta B. Freitas Disentangling the causes of high polymorphism sharing in sympatric Petunia species from subtropical highland grasslands: insights from nuclear diversity Genetics and Molecular Biology Petunia Solanaceae genetic diversity speciation subtropical highland grassland |
| title | Disentangling the causes of high polymorphism sharing in sympatric Petunia species from subtropical highland grasslands: insights from nuclear diversity |
| title_full | Disentangling the causes of high polymorphism sharing in sympatric Petunia species from subtropical highland grasslands: insights from nuclear diversity |
| title_fullStr | Disentangling the causes of high polymorphism sharing in sympatric Petunia species from subtropical highland grasslands: insights from nuclear diversity |
| title_full_unstemmed | Disentangling the causes of high polymorphism sharing in sympatric Petunia species from subtropical highland grasslands: insights from nuclear diversity |
| title_short | Disentangling the causes of high polymorphism sharing in sympatric Petunia species from subtropical highland grasslands: insights from nuclear diversity |
| title_sort | disentangling the causes of high polymorphism sharing in sympatric petunia species from subtropical highland grasslands insights from nuclear diversity |
| topic | Petunia Solanaceae genetic diversity speciation subtropical highland grassland |
| url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572023000600102&lng=en&tlng=en |
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