Hybrid zone of a tree in a cerrado/atlantic forest ecotone as a hotspot of genetic diversity and conservation

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dc.creatorAndré Carneiro Muniz
dc.creatorRicardo José Gonzaga Pimenta
dc.creatorMariana Vargas Cruz
dc.creatorJacqueline Gomes Rodrigues
dc.creatorRenata Santiago de Oliveira Buzatti
dc.creatorMyriam Heuertz
dc.creatorJosé P. Lemos-Filho
dc.creatorMaria Bernadete Lovato
dc.date.accessioned2023-12-05T20:49:50Z
dc.date.accessioned2025-09-09T01:32:08Z
dc.date.available2023-12-05T20:49:50Z
dc.date.issued2022
dc.identifier.doi10.1002/ece3.8540
dc.identifier.issn2045-7758
dc.identifier.urihttps://hdl.handle.net/1843/61761
dc.languageeng
dc.publisherUniversidade Federal de Minas Gerais
dc.relation.ispartofEcology and Evolution
dc.rightsAcesso Aberto
dc.subjectÁrvores
dc.subjectEcótipo
dc.subjectCerrado Brasil
dc.subject.otherNeotropical tree
dc.subject.otherPlathymenia
dc.subject.otherConservation
dc.subject.otherEcotypes
dc.subject.otherHybrid zone
dc.subject.otherSavanna–forest ecotone
dc.titleHybrid zone of a tree in a cerrado/atlantic forest ecotone as a hotspot of genetic diversity and conservation
dc.typeArtigo de periódico
local.citation.epage20
local.citation.issue1
local.citation.spage1
local.citation.volume12
local.description.resumoThe 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.
local.publisher.countryBrasil
local.publisher.departmentICB - INSTITUTO DE CIÊNCIAS BIOLOGICAS
local.publisher.initialsUFMG
local.url.externahttps://onlinelibrary.wiley.com/doi/10.1002/ece3.8540

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