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  • Title: Phylogeographic structure of the chloroplast DNA gene pool in North American Boechera--a genus and continental-wide perspective.
    Author: Kiefer C, Dobes C, Sharbel TF, Koch MA.
    Journal: Mol Phylogenet Evol; 2009 Aug; 52(2):303-11. PubMed ID: 19328239.
    Abstract:
    Continental-wide phylogeographic studies of plants in North America are rare. In our study we examined the phylogeographic history of Boechera (Brassicaceae) on a continental-wide scale testing if it is possible to do an analysis for 57 of the currently accepted taxa simultaneously. A large amount of haplotype sharing is explained both by recurrent hybridization and by non-differentiation of haplotypes since speciation. Hence, the chloroplast gene pool in Boechera predates speciation and therefore justifies the simultaneous analysis of a large number of taxa. Unrelated from taxon identity we can show that the evolutionary lineages detected have a different phylogeographic history in terms of glacial refugia and recently recolonised areas.
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