Highly reduced genetic diversity of Rosa rubiginosa L. populations in the invasive range

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Authors

  • Heike Zimmermann
  • Christiane Ritz
  • Heidi Hirsch
  • Daniel Renison
  • Karsten Wesche
  • Isabell Hensen
Rosa rubiginosa (Rosaceae) populations introduced to Argentina successfully invade various habitats, forming extensive impenetrable thickets. To investigate the consequences of founder events and to track the native origin of Argentinean populations, the genetic diversity of invasive R. rubiginosa populations was compared with that of native populations in Europe, and genetic similarity was assessed between groups. We sampled 13 Argentinean populations and 20 native populations in Germany and Spain, and we applied two molecular marker techniques (simple sequence repeats and random amplification of polymorphic DNA [RAPD]). Genetic diversity within the invasive range was clearly lower than it was in the native range. Principle coordinate analysis and between-class analysis did not reveal the exact European origin of the invasive populations, but our data suggest that at least one Argentinean population originated in Germany. Overall, the strong similarity of RAPD and allelic phenotypes throughout Argentina suggests a limited number of introduction events, that the species spread through human transport, and that the few genetic phenotypes present in the species were conserved largely unaltered as a result of mainly asexual reproduction.
Original languageEnglish
JournalInternational Journal of Plant Sciences
Volume171
Issue number4
Pages (from-to)435-446
Number of pages12
ISSN1058-5893
DOIs
Publication statusPublished - 01.05.2010

    Research areas

  • Biology - rosaceae, genetic diversity, invasive shrub, native source population, south america

DOI

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