Details zur Publikation

Kategorie Textpublikation
Referenztyp Zeitschriften
DOI 10.1111/j.1365-294x.2005.02521.x
Titel (primär) Molecular evidence for multiple introductions of garlic mustard (Alliaria petiolata, Brassicaceae) to North America
Autor Durka, W. ORCID logo ; Boßdorf, O.; Prati, D.; Auge, H. ORCID logo
Quelle Molecular Ecology
Erscheinungsjahr 2005
Department BZF
Band/Volume 14
Heft 6
Seite von 1697
Seite bis 1706
Sprache englisch
Invasive species offer excellent model systems for studying rapid evolutionary change. In this context, molecular markers play an important role because they provide information about pathways of introduction, the amount of genetic variation introduced, and the extent to which founder effects and inbreeding after population bottlenecks may have contributed to evolutionary change. Here, we studied microsatellite variation in eight polymorphic loci among and within 27 native and 26 introduced populations of garlic mustard (Alliaria petiolata), a European herb which is a current serious invader in North American deciduous forests. Overall, introduced populations were genetically less diverse. However, considerable variability was present and when compared to the probable source regions, no bottleneck was evident. Observed heterozygosity was very low and resulted in high inbreeding coefficients, which did not differ significantly between native and introduced populations. Thus, selfing seems to be equally dominant in both ranges. Consequently, there was strong population differentiation in the native (FST = 0.704) and the introduced (FST = 0.789) ranges. The high allelic diversity in the introduced range strongly suggests multiple introductions of Alliaria petiolata to North America. Out of six European regions, the British Isles, northern Europe, and central Europe had significantly higher proportions of alleles, which are common to the introduced range, and are therefore the most probable source regions. The genetic diversity established by multiple introductions, and the lack of inbreeding depression in this highly selfing species, may have contributed to the invasion success of Alliaria petiolata.
dauerhafte UFZ-Verlinkung
Durka, W., Boßdorf, O., Prati, D., Auge, H. (2005):
Molecular evidence for multiple introductions of garlic mustard (Alliaria petiolata, Brassicaceae) to North America
Mol. Ecol. 14 (6), 1697 - 1706 10.1111/j.1365-294x.2005.02521.x