Molecular phylogeny ofCheirolophus (Asteraceae:Cardueae-Centaureinae) based on ITS sequences of nuclear ribosomal DNA

被引：0
作者：
Alfonso Susanna
Teresa Garnatje
Núria Garcia-Jacas
机构：
[1] Institut Botànic de Barcelona (C.S.I.C.),
来源：
Plant Systematics and Evolution | 1999年 / 214卷
关键词：
Mediterranean; molecular phylogeny; ITS;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
The genusCheirolophus has an interesting western Mediterranean and Macaronesian distribution. Here we investigate the delimitation of the genus and its exclusion from the large genusCentaurea, the systematic position of the related genusPaleocyanus, the delimitation of some species and the phylogeny of the group. We have carried out a phylogenetic analysis of the PCR-generated sequences of the internal transcribed spacers (ITS-1 and ITS-2) of the nuclear ribosomal DNA. The results suggest that the genus, includingPaleocyanus crassifolius is monophyletic; thus, a new combination of this species underCheirolophus is proposed. The Macaronesian group of species is also monophyletic, indicating a single colonization of the archipelago. The poor resolution of microspecies in the Macaronesian group reinforces the hypothesis of a very recent differentiation of the group.
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页码：147 / 160
页数：13
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