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- W3005282510 endingPage "705" @default.
- W3005282510 startingPage "691" @default.
- W3005282510 abstract "Abstract The plant communities associated with iron-rich outcrops are still little known about to their genetic structure and diversity. Outcrops are often considered to be ‘terrestrial islands’, and gene flow among populations on different outcrops is presumed to be hampered by the isolation effect provided by the surrounding matrix. Here, we studied the genetic diversity and structure of populations of Dyckia excelsa to test the hypothesis that the disjunction of the ironstone outcrops where this species occurs promotes its highly structured genetic variability. Seven nuclear microsatellite markers and two plastid DNA intergenic spacers (rps16-trnK and rpl32-trnL) were used to characterize individuals from seven locations in the region of Urucum Residual Plateau, Mato Grosso do Sul State, Brazil. These markers low haplotype and allelic diversity and high levels of genetic divergence among outcrops, indicating prolonged genetic isolation, with diversification of haplotypes dating from the Pleistocene (1.0 Mya). Pollen movement may occur between neighbouring populations, resulting in a pattern of isolation-by-distance. For conservation purposes, it is recommended that D. excelsa be preserved in situ in each specific location given the low levels of gene flow and the high degree of genetic uniqueness in each group of populations investigated." @default.
- W3005282510 created "2020-02-14" @default.
- W3005282510 creator A5001181504 @default.
- W3005282510 creator A5007815156 @default.
- W3005282510 creator A5027025215 @default.
- W3005282510 creator A5062444524 @default.
- W3005282510 creator A5086738423 @default.
- W3005282510 date "2020-02-08" @default.
- W3005282510 modified "2023-09-27" @default.
- W3005282510 title "Strong genetic structure in Dyckia excelsa (Bromeliaceae), an endangered species found on ironstone outcrops in Pantanal, Brazil" @default.
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