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• W1522367038 endingPage "1035" @default.
• W1522367038 startingPage "1024" @default.
• W1522367038 abstract "Abstract Many endemic species present disjunct geographical distribution; therefore, they are suitable models to test hypotheses about the ecological and evolutionary mechanisms involved in the origin of disjunct distributions in these habitats. We studied the genetic structure and phylogeography of Tibouchina papyrus (Melastomataceae), endemic to rocky savannas in Central Brazil, to test hypothesis of vicariance and dispersal in the origin of the disjunct geographical distribution. We sampled 474 individuals from the three localities where the species is reported: Serra dos Pirineus, Serra Dourada, and Serra de Natividade. Analyses were based on the polymorphisms at cpDNA and on nuclear microsatellite loci. To test for vicariance and dispersal we constructed a median‐joining network and performed an analysis of molecular variance (AMOVA). We also tested population bottleneck and estimated demographic parameters and time to most recent common ancestor (TMRCA) using coalescent analyses. A remarkable differentiation among populations was found. No significant effect of population expansion was detected and coalescent analyses showed a negligible gene flow among populations and an ancient coalescence time for chloroplast genome. Our results support that the disjunct distribution of T. papyrus may represent a climatic relict. With an estimated TMRCA dated from ∼836.491 ± 107.515 kyr BP (before present), we hypothesized that the disjunct distribution may be the outcome of bidirectional expansion of the geographical distribution favored by the drier and colder conditions that prevailed in much of Brazil during the Pre‐Illinoian glaciation, followed by the retraction as the climate became warmer and moister." @default.
• W1522367038 created "2016-06-24" @default.
• W1522367038 creator A5001834395 @default.
• W1522367038 creator A5002069646 @default.
• W1522367038 creator A5080426543 @default.
• W1522367038 creator A5089306911 @default.
• W1522367038 date "2012-04-12" @default.
• W1522367038 modified "2023-10-17" @default.
• W1522367038 title "Phylogeography of<i>Tibouchina papyrus</i>(Pohl) Toledo (Melastomataceae), an endangered tree species from rocky savannas, suggests bidirectional expansion due to climate cooling in the Pleistocene" @default.
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• W1522367038 doi "https://doi.org/10.1002/ece3.236" @default.
• W1522367038 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/3399167" @default.
• W1522367038 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/22837846" @default.
• W1522367038 hasPublicationYear "2012" @default.
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