On the phylogeny of the genus Calceolaria (Calceolariaceae) as inferred from ITS and plastid matK sequences
On the phylogeny of the genus Calceolaria (Calceolariaceae) as inferred from ITS and plastid matK sequences
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DOI：
10.2307/25065534
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发表时间：
2006-02-01
期刊：
影响因子：
3.4
通讯作者：
Andersson, S
中科院分区：
文献类型：
--
作者：
Andersson, S
利用叶绿体基因matK和核内转录间隔区（ITS）序列探讨了蒲包属及其近缘属的分类地位和亲缘关系。蒲包亚科是一个被强烈支持的单系类群，并作为苦苣苔科的姐妹类群得到适度的支持。单种属Porodittia深深地嵌套在蒲包属内，并在后一属下被简化为同义。检索蒲包属的系统发育树显示，许多目前公认的部分是多系的。他们还表明，温带物种保留了该属中最古老的特征状态。蒲包属的分支发育具有许多支持良好的分支，这些分支在形态上难以描述。一个新的解释形态特征诊断内蒲包属自然群体的要求。万卡班巴偏折作为蒲包属植物地理学中的一个重要因素，其作用被推断的植物发生学强烈暗示。
The chloroplast gene matK and the nuclear internal transcribed spacer region (ITS) were used to explore taxonomic placement of and phylogeny within Calceolaria and related genera of Calceolarieae (= Calceolariaceae), a group traditionally referred to the polyphyletic Scrophulariaceae. Calceolarieae appear as a strongly supported monophyletic group and receive moderate support as the sister group of the family Gesneriaceae. The monotypic genus Porodittia is deeply nested inside Calceolaria and is reduced to synonymy under the latter genus. The phylogenetic trees retrieved for Calceolaria reveal that many presently recognised sections are polyphyletic. They also suggest that temperate species have retained the most ancestral character states in the genus. The phylogeny of Calceolaria features a number of well Supported clades, which are difficult to characterize morphologically. A renewed interpretation of morphological characters diagnosing natural groups within Calceolaria is called for. The role of the Huancabamba Deflection as an important factor in the biogeography of Calceolaria is strongly alluded by the inferred phylogeny.