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http://hdl.handle.net/1843/61761| Type: | Artigo de Periódico |
| Title: | Hybrid zone of a tree in a cerrado/atlantic forest ecotone as a hotspot of genetic diversity and conservation |
| Authors: | André Carneiro Muniz Ricardo José Gonzaga Pimenta Mariana Vargas Cruz Jacqueline Gomes Rodrigues Renata Santiago de Oliveira Buzatti Myriam Heuertz José P. Lemos-Filho Maria Bernadete Lovato |
| Abstract: | The Cerrado, the largest Neotropical savanna, and the Brazilian Atlantic Forest form large ecotonal areas where savanna and forest habitats occupy adjacent patches with closely related species occurring side by side, providing opportunities for hybridiza-tion. Here, we investigated the evolutionary divergence between the savanna and for -est ecotypes of the widely distributed tree Plathymenia reticulata (n= 233 individuals). Genetic structure analysis of P. reticulata was congruent with the recognition of two ecotypes, whose divergence captured the largest proportion of genetic variance in the data (FCT= 0.222 and FST= 0.307). The ecotonal areas between the Cerrado and the Atlantic Forest constitute a hybrid zone in which a diversity of hybrid classes was observed, most of them corresponding to second- generation hybrids (F2) or back -crosses. Gene flow occurred mainly toward the forest ecotype. The genetic structure was congruent with isolation by environment, and environmental correlates of di -vergence were identified. The observed pattern of high genetic divergence between ecotypes may reflect an incipient speciation process in P. reticulata. The low genetic diversity of the P. reticulata forest ecotype indicate that it is threatened in areas with high habitat loss on Atlantic Forest. In addition, the high divergence from the savanna ecotype suggests it should be treated as a different unit of management. The high genetic diversity found in the ecotonal hybrid zone supports the view of ecotones as important areas for the origin and conservation of biodiversity in the Neotropics. |
| Subject: | Árvores Ecótipo Cerrado Brasil |
| language: | eng |
| metadata.dc.publisher.country: | Brasil |
| Publisher: | Universidade Federal de Minas Gerais |
| Publisher Initials: | UFMG |
| metadata.dc.publisher.department: | ICB - INSTITUTO DE CIÊNCIAS BIOLOGICAS |
| Rights: | Acesso Aberto |
| metadata.dc.identifier.doi: | 10.1002/ece3.8540 |
| URI: | http://hdl.handle.net/1843/61761 |
| Issue Date: | 2022 |
| metadata.dc.url.externa: | https://onlinelibrary.wiley.com/doi/10.1002/ece3.8540 |
| metadata.dc.relation.ispartof: | Ecology and Evolution |
| Appears in Collections: | Artigo de Periódico |
Files in This Item:
| File | Description | Size | Format | |
|---|---|---|---|---|
| Hybrid zone of a tree in a cerrado atlantic forest ecotone as a hotspot of genetic diversity and conservation.pdf | 2.33 MB | Adobe PDF | View/Open |
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