Dong Zhanghong, Qu Shaohong, Landrein Sven, Yu Wen-Bin, Xin Jing, Zhao Wenzhi, Song Yu, Tan Yunhong, Xin Peiyao
Southwest Research Center for Landscape Architecture Engineering, National Forestry and Grassland Administration, Southwest Forestry University, Kunming, China.
Center for Integrative Conservation and Horticulture Department, Xishuangbanna Tropical Botanical Garden, Chinese Academy of Sciences, Mengla, China.
Front Genet. 2022 Mar 15;13:831206. doi: 10.3389/fgene.2022.831206. eCollection 2022.
(Rosaceae) is an economically important genus with around 30 species. It is widely distributed in tropical and warm temperate regions of Asia, with most of its species in China, Myanmar, and Vietnam. However, is often confused with the smaller genus , and the phylogenetic relationships between the two genera are controversial. Here we present phylogenetic analyses of 38 newly generated and nrDNA together with 16 sequences of nrDNA and 28 sequences of ITS obtained from GenBank, representing 28 species of and 12 species of , in order to reconstruct highly supported relationships for the two genera. Contrary to previous research based on limited sampling, our results highlight the monophyly of as well as . The topology recovered here is consistent with key morphological synapomorphies such as the persistent sepals in . Our findings show that increased sampling of taxa can provide a more robust phylogeny through reducing phylogenetic error and increasing overall phylogenetic accuracy.
（蔷薇科）是一个具有重要经济价值的属，约有30个物种。它广泛分布于亚洲的热带和暖温带地区，其大多数物种分布在中国、缅甸和越南。然而，它常与较小的属混淆，且这两个属之间的系统发育关系存在争议。在此，我们对38条新生成的 和nrDNA以及从GenBank获取的16条nrDNA序列和28条ITS序列进行系统发育分析，这些序列代表了 属的28个物种和 属的12个物种，以便重建这两个属得到高度支持的关系。与之前基于有限抽样的研究相反，我们的结果突出了 属以及 属的单系性。此处恢复的拓扑结构与关键形态共衍征一致，如 属中的宿存萼片。我们的研究结果表明，增加分类群的抽样可以通过减少系统发育误差和提高整体系统发育准确性来提供更可靠的系统发育。
