ArticleAnnals of botany2017
A large historical refugium explains spatial patterns of genetic diversity in a Neotropical savanna tree species.
Article in Annals of botany, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers.
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Who cites it
11 citing papers in PubMed, 33 citations in OpenAlex.
- Non-adaptedness and vulnerability to climate change threaten Plathymenia trees (Fabaceae) from the Cerrado and Atlantic Forest.Scientific reports · 2024Article
- Forecasting effects of climate changes on the population genetic structure of Anacardium occidentale in the Cerrado biome, Brazil.Genetica · 2023Article
- Genomic signatures of ecological divergence between savanna and forest populations of a Neotropical tree.Annals of botany · 2023Article
- Comparative population genomics in Tabebuia alliance shows evidence of adaptation in Neotropical tree species.Heredity · 2022Article
- The protected tree Dimorphandra wilsonii (Fabaceae) is a population of inter-specific hybrids: recommendations for conservation in the Brazilian Cerrado/Atlantic Forest ecotone.Annals of botany · 2020Article
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- Genetic data improve the assessment of the conservation status based only on herbarium records of a Neotropical tree.Scientific reports · 2019Article
- Unravelling the genetic differentiation among varieties of the Neotropical savanna tree Hancornia speciosa Gomes.Annals of botany · 2018Article
- Genetic and Historical Colonization Analyses of an Endemic Savanna Tree,Frontiers in plant science · 2018Article
- Endemism hotspots are linked to stable climatic refugia.Annals of botany · 2017Review
Corrections and comments
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Authors and funding
5 authors at 3 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
BACKGROUND AND
aimsThe relative role of Pleistocene climate changes in driving the geographic distribution and genetic diversity of South American species is not well known, especially from open biomes such as the Cerrado, the most diverse tropical savanna, encompassing high levels of endemism. Here the effects of Quaternary climatic changes on demographic history, distribution dynamics and genetic diversity of Dimorphandra mollis, an endemic tree species widely distributed in the Cerrado, were investigated.
methodsA total of 38 populations covering most of the distribution of D. mollis were analysed using internal transcribed spacer (ITS) sequences and nuclear microsatellite variation [simple sequence repeats (SSRs)]. The framework incorporated statistical phylogeography, coalescent analyses and ecological niche modelling (ENM). KEY
resultsDifferent signatures of Quaternary climatic changes were found for ITS sequences and SSRs corresponding to different time slices. Coalescent analyses revealed large and constant effective population sizes, with high historical connectivity among the populations for ITS sequences and low effective population sizes and gene flow with recent population retraction for SSRs. ENMs indicated a slight geographical range retraction during the Last Glacial Maximum. A large historical refugium across central Brazil was predicted. Spatially explicit analyses showed a spatial cline pattern in genetic diversity related to the paleodistribution of D. mollis and to the centre of its historical refugium.
conclusionsThe complex genetic patterns found in D. mollis are the result of a slight geographical range retraction during the Last Glacial Maximum followed by population expansion to the east and south from a large refugium in the central part of the Cerrado. This historical refugium is coincident with an area predicted to be climatically stable under future climate scenarios. The identified refugium should be given high priority in conservation polices to safeguard the evolutionary potential of the species under predicted future climatic changes.
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