Non-monophyly of Primula subgenera Auganthus and Carolinella (Primlaceae) as confirmed by the nuclear DNA sequence variation
Non-monophyly of Primula subgenera Auganthus and Carolinella (Primlaceae) as confirmed by the nuclear DNA sequence variation
复制标题
核 DNA 序列变异证实报春花亚属 Auganthus 和 Carolinella（报春科）的非单系
DOI：
10.1007/s00606-015-1207-0
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发表时间：
2015-10-01
影响因子：
1.9
通讯作者：
Hao, Gang
中科院分区：
文献类型：
--
作者：
Liu, Yun-Jiao;Liu, Juan;Hao, Gang
早期的分子系统发育分析发现，利用叶绿体DNA序列数据的非单系报春亚属Auganthus和Chelseinella，和这两个群体的属下划分的进化含义仍然不确定。本研究通过最大简约法和贝叶斯推断分析，将质体基因和nrDNA ITS区结合起来，分析了130个新序列。这证实了在目前的范围内，Auganthus亚属和Escherichiella亚属都不是单系的。帽状蒴果是报春花亚属的一个特征，可能在报春花中经历了多次进化。若仅包括亚属Aucinella而不包括P.aromatica，则Auganthus亚属可能是一个自然类群。一些亚属群的位置得到澄清，但仍存在挑战，有关的形态特征的亚属Auganthus内的部分划界。
An earlier molecular phylogenetic analysis using cpDNA sequence data revealed the non-monophyly of Primula subgenera Auganthus and Carolinella, and the evolutionary implication of the infrageneric division of these two groups remains uncertain. In the present study, 130 new sequences were newly analyzed, with the combination of plastid genes and nrDNA ITS regions through maximum parsimony and Bayesian inference analyses. It confirms that neither subgenus Auganthus nor subgenus Carolinella is monophyletic in its current circumscription. The calyptrate capsule, a diagnostic character for subgenus Carolinella, may have evolved multiple times in Primula. Subgenus Auganthus would be a natural group only with inclusion of subgenus Carolinella and exclusion of P. aromatica. The positions of some infrageneric groups are clarified, but challenges remain regarding relevant morphological characters for sectional delimitations within subgenus Auganthus.