Molecular phylogeny reveals the non-monophyly of tribe Yinshanieae (Brassicaceae) and description of a new tribe, Hillielleae
Molecular phylogeny reveals the non-monophyly of tribe Yinshanieae (Brassicaceae) and description of a new tribe, Hillielleae
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DOI：
10.1016/j.pld.2016.04.004
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发表时间：
2016-08-01
期刊：
影响因子：
4.8
通讯作者：
Sun, Hang
中科院分区：
文献类型：
--
作者：
Chen, Hongliang;Deng, Tao;Sun, Hang
在单属族阴山族（菊科）的分类处理是有争议的，由于在属的划分适用于其物种的差异。本研究利用核ITS和叶绿体trnL-F区序列对阴山族的单系性进行了分析，利用核ITS和ETS两个标记和叶绿体trnL-F、trnH-psbA、rps 16、rpL 32-trnL四个标记对该族的系统发育关系进行了分析。利用最大简约法、最大似然法和贝叶斯推理方法，重建了紫茎泽兰科和阴山藓族的亲缘关系。结果表明，阴山族不是一个单系群，其类群分裂为两个亲缘关系较远的分支：一个分支包含4个类群，福尔斯归入谱系I，而另一个分支则包含以前归入Hilliella的所有种，并嵌入扩展谱系II。根据分子系统学、形态学和细胞学的综合证据，对阴山族进行了重新定义，并提出了一个新的族--山藓族（Hillielleae）。版权所有（C）2016中国科学院昆明植物研究所Elsevier B. V.代表KeAi Communications Co.提供出版服务，公司
The taxonomic treatment within the unigeneric tribe Yinshanieae (Brassicaceae) is controversial, owing to differences in generic delimitation applied to its species. In this study, sequences from nuclear ITS and chloroplast trnL-F regions were used to test the monophyly of Yinshanieae, while two nuclear markers (ITS, ETS) and four chloroplast markers (trnL-F, trnH-psbA, rps16, rpL32-trnL) were used to elucidate the phylogenetic relationships within the tribe. Using maximum parsimony, maximum likelihood, and Bayesian inference methods, we reconstructed the phylogeny of Brassicaceae and Yinshanieae. The results show that Yinshanieae is not a monophyletic group, with the taxa splitting into two distantly related clades: one clade contains four taxa and falls in Lineage I, whereas the other includes all species previously placed in Hilliella and is embedded in the Expanded Lineage II. The tribe Yinshanieae is redefined, and a new tribe, Hillielleae, is proposed based on combined evidence from molecular phylogeny, morphology, and cytology. Copyright (C) 2016 Kunming Institute of Botany, Chinese Academy of Sciences. Publishing services by Elsevier B.V. on behalf of KeAi Communications Co., Ltd.