Replication data for: Detecting phylogenetically destabilizing species in Potentilla L. (Rosaceae) using low-copy nuclear markers

The dataset consists of sequence alignments for the six DNA markers DHAR2, GAPCP1, GBSSI-2, SbeI, ITS and matK in fasta format for a selected number of cinquefoil species (genus Potentilla, family Rosaceae). The alignments were used in Bayesian Inference analyses and a Multispecies Coalescent analysis, with the aim of resolving the backbone phylogeny of Potentilla Resolving the evolutionary history of the plant genus Potentilla (Rosaceae) has proven challenging. Previous analyses recovered six subgroups, but the relationships among some of these clades differ between data sets. We studied the incongruences by analyzing four low-copy nuclear markers, in addition to chloroplast and nuclear ribosomal data, with a set of Bayesian phylogenetic analyses. A selective taxon removal strategy demonstrated that the included representatives from the Fragarioides clade, P. dickinsii and P. fragarioides, were the main sources of the instability seen in the trees. When P. dickinsii and P. fragarioides were removed from the dataset, a fully resolved, supported backbone phylogeny of Potentilla was obtained in a Multispecies Coalescent analysis.本数据集包含针对选定数量委陵菜属（*Potentilla*，蔷薇科Rosaceae）物种的6个DNA标记的序列比对文件，格式为FASTA，涉及标记分别为DHAR2、GAPCP1、GBSSI-2、SbeI、ITS及matK。上述序列比对曾被用于贝叶斯推断（Bayesian Inference）分析与多物种溯祖（Multispecies Coalescent）分析，旨在解析委陵菜属的系统发育主干框架。 解析蔷薇科委陵菜属的演化历史一直颇具挑战。既往系统发育分析已鉴定出六个亚组，但部分支系间的系统发育关系在不同数据集间存在差异。本研究结合叶绿体数据、核核糖体数据，同时分析4个低拷贝核标记，并开展一系列贝叶斯系统发育分析，对这些系统发育冲突展开了研究。通过选择性移除类群的策略，本研究证实，所纳入的Fragarioides支系代表类群——Dickins氏委陵菜（P. dickinsii）与莓叶委陵菜（P. fragarioides）——是导致系统发育树拓扑结构不稳定的主要因素。当从数据集中移除上述两个类群后，通过多物种溯祖分析即可得到完全解析且具有高支持度的委陵菜属系统发育主干框架。