engleski

Phylogeography of Frangula alnus (Rhamnaceae) in SE Europe

Balkan populations of many European woody plants show high levels of genetic diversity both within and among them. This is due in part to the region's history as an important glacial refuge area, as well as to its location in a position where populations expanding from other refugia in Italy and Anatolia meet and mix. The present study aims to reconstruct the phylogeography of the shrub Frangula alnus Miller (Rhamnaceae) in the region and its surroundings based on chloroplast DNA RFLP analyses. Although we can not exclude that local populations may have survived the last glacial maximum in situ, results suggest that the area has probably been colonized from Italy and the SE extreme of Europe and/or Anatolia, because populations contain a mixture of haplotypes from both regions. The observed high diversity seems therefore to be primarily a result of population admixtures during the species northward expansion in the early Holocene.

Frangula alnus; phylogeoghraphy; colonisation; haplotypes

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