10.5061/DRYAD.8F3BK
Töpel, Mats
University of Gothenburg
Lundberg, Magnus
Stockholm University
Eriksson, Torsten
Swedish Museum of Natural History
Eriksen, Bente
University of Gothenburg
Data from: Molecular data and ploidal levels indicate several putative
allopolyploidization events in the genus Potentilla (Rosaceae)
Dryad
dataset
2011
allopolyploidy
Ivesia
molecular phylogeny
Horkeliella
Potentilla
Horkelia
Fragariinae
Potentilleae
2011-05-12T18:54:59Z
2011-05-12T18:54:59Z
en
https://doi.org/10.1371/currents.RRN1237
323928 bytes
1
CC0 1.0 Universal (CC0 1.0) Public Domain Dedication
Several naturally occurring hybrids in Potentilla (Rosaceae) have been
reported, but no molecular evidence has so far been available to test
these hypotheses of hybridization. We have compared a nuclear and a
chloroplast gene tree to identify topological incongruences that may
indicate hybridization events in the genus. Furthermore, the monophyly and
phylogenetic position of the proposed segregated genera Argentina, Ivesia
and Horkelia have been tested. The systematic signal from the two
morphological characters, style- and anther shape, has also been
investigated by ancestral state reconstruction, to elucidate how well
these characters concur with the results of the molecular phylogenies. Six
major clades, Anserina, Alba, Fragarioides, Reptans, ivesioid and
Argentea, have been identified within genus Potentilla. Horkelia, Ivesia
and Horkeliella (the ivesioid clade), form a monophyletic group nested
within Potentilla. Furthermore, the origin of the proposed segregated
genus Argentina (the Anserina clade) is uncertain but not in conflict with
a new generic status of the group. We also found style morphology to be an
informative character that reflects the phylogenetic relationships within
Potentilla. Five well-supported incongruences were found between the
nuclear and the chloroplast phylogenies, and three of these involved
polyploid taxa. However, further investigations, using low copy molecular
markers, are required to infer the phylogeny of these species and to test
the hypothesis of hybrid origin.
ITS.ETS.alignment.fig_3Alignment of 1075 DNA characters and 136 gap-code
characters from the nuclear ribosomal markers 'ITS1 (partial), 5.8S
rRNA gene and ITS2 (partial)' and 'external transcribed spacer
(partial) and 18S rRNA gene (partial)'. Gaps are indicated by
"-". Also included in the file are the instructions to MrBayes
used to analyze the data.ITS.ETS.trees.fig_3The resulting 50% majority
rule consensus trees (with and without branch length data) from the
analysis of the data in "ITS.ETS.alignment.fig_3.nex". The tree
with branch lengths was used for figure
3.trnLF-trnSG.alignemnt.fig4Alignment of 2722 DNA characters and 239
gap-code characters from the plastid markers 'tRNA-Leu gene
(partial), trnL-trnF IGS and tRNA-Phe gene (partial)' and
'trnS-trnG IGS parital tRNA-Gly gene'. Gaps are indicated by
"-". Also included in the file are the instructions to MrBayes
used to analyze the data.trnLF-trnSG.tree.fig4The resulting 50% majority
rule consensus trees (with and without branch length data) from the
analysis of the data in "trnLF-trnSG.alignemnt.fig4.nex". The
tree with branch lengths was used for figure 4.