Lundberg Et Al. 2009
Molecular Phylogenetics and Evolution 51 (2009) 269–280 Contents lists available at ScienceDirect Molecular Phylogenetics and Evolution journal homepage: www.elsevier.com/locate/ympev Allopolyploidy in Fragariinae (Rosaceae): Comparing four DNA sequence regions, with comments on classification Magnus Lundberg a,*, Mats Töpel b, Bente Eriksen b, Johan A.A. Nylander a, Torsten Eriksson a,c a Department of Botany, Stockholm University, SE-10691, Stockholm, Sweden b Department of Environmental Sciences, Gothenburg University, Box 461, SE-40530, Göteborg, Sweden c Bergius Foundation, Royal Swedish Academy of Sciences, SE-10405, Stockholm, Sweden article info abstract Article history: Potential events of allopolyploidy may be indicated by incongruences between separate phylogenies Received 23 June 2008 based on plastid and nuclear gene sequences. We sequenced two plastid regions and two nuclear ribo- Revised 25 February 2009 somal regions for 34 ingroup taxa in Fragariinae (Rosaceae), and six outgroup taxa. We found five well Accepted 26 February 2009 supported incongruences that might indicate allopolyploidy events. The incongruences involved Aphanes Available online 5 March 2009 arvensis, Potentilla miyabei, Potentilla cuneata, Fragaria vesca/moschata, and the Drymocallis clade. We eval- uated the strength of conflict and conclude that allopolyploidy may be hypothesised in the four first Keywords: cases. Phylogenies were estimated using Bayesian inference and analyses were evaluated using conver- Allopolyploidy gence diagnostics. Taxonomic implications are discussed for genera such as Alchemilla, Sibbaldianthe, Cha- Fragariinae Incongruence maerhodos, Drymocallis and Fragaria, and for the monospecific Sibbaldiopsis and Potaninia that are nested Molecular phylogeny inside other genera. Two orphan Potentilla species, P. miyabei and P. cuneata are placed in Fragariinae.
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