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Geographic and phylogenetic patterns in Silene section Melandrium (Caryophyllaceae) as inferred from chloroplast and nuclear DNA sequences
Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Organism Biology, Systematic Biology.
2010 (English)In: Molecular Phylogenetics and Evolution, ISSN 1055-7903, E-ISSN 1095-9513, Vol. 57, no 3, 978-991 p.Article in journal (Refereed) Published
Abstract [en]

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.

Place, publisher, year, edition, pages
2010. Vol. 57, no 3, 978-991 p.
Keyword [en]
Chloroplast DNA, Incongruence between nuclear and plastid phylogenies, Introgression, ITS, Relative dating, Section Elisanthe, Section Melandrium, Silene
National Category
Biological Systematics
Research subject
Biology with specialization in Systematics
URN: urn:nbn:se:uu:diva-141895DOI: 10.1016/j.ympev.2010.08.003ISI: 000285231500002PubMedID: 20723610OAI: oai:DiVA.org:uu-141895DiVA: diva2:386560
Available from: 2011-01-12 Created: 2011-01-12 Last updated: 2011-01-17Bibliographically approved

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