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Geographic and phylogenetic patterns in Silene section Melandrium (Caryophyllaceae) as inferred from chloroplast and nuclear DNA sequences

  • Anja Rautenberg
  • Louise Hathaway
  • Bengt Oxelman
  • Honor C Prentice
Publishing year: 2010
Language: English
Pages: 978-991
Publication/Series: Molecular Phylogenetics and Evolution
Volume: 57
Issue: 3
Document type: Journal article
Publisher: Elsevier

Abstract english

The phylogenetic relationships between the five dioecious species in Silene section Melandrium (Caryophyllaceae) and their putative hermaphrodite relatives are investigated based on an extensive geographic and taxonomic sample, using DNA sequence data from the chloroplast genome and the nuclear ribosomal ITS region. The hermaphrodite S. noctiflora (the type species of section Elisanthe) is distantly related to the dioecious species. With the exception of chloroplast sequences in one S. latifolia population from Turkey, the dioecious taxa form a strongly supported monophyletic group (Silene section Melandrium). The phylogenetic structure within section Melandrium differs between chloroplast and nuclear sequences. While there is extensive sharing of chloroplast haplotypes among all the dioecious species (the observed patterns reflect geographic structure), the nuclear ITS phylogeny shows a higher degree of taxonomic structure. Chloroplast-sharing by the section Melandrium species is most plausibly explained by a history of hybridization and extensive backcrossing. (C) 2010 Elsevier Inc. All rights reserved.


  • Ecology
  • Relative dating
  • Introgression
  • ITS
  • Chloroplast DNA
  • Section Melandrium
  • Silene
  • Section Elisanthe
  • Incongruence between nuclear and
  • plastid
  • phylogenies


  • ISSN: 1095-9513
Honor C. Prentice
E-mail: honor_c [dot] prentice [at] biol [dot] lu [dot] se

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