Using molecular phylogenies to test phytogeographical links between East/South Africa-Southern Arabia and the Macaronesian islands -: a review, and the case of Vierea and Pulicaria section Vieraeopsis (Asteraceae)
Using molecular phylogenies to test phytogeographical links between East/South Africa-Southern Arabia and the Macaronesian islands -: a review, and the case of Vierea and Pulicaria section Vieraeopsis (Asteraceae)
复制标题
DOI：
10.2307/4135612
复制
发表时间：
2004-05-01
期刊：
影响因子：
3.4
通讯作者：
Francisco-Ortega, J
中科院分区：
文献类型：
--
作者：
Andrus, N;Trusty, J;Francisco-Ortega, J
我们进行了系统发育分析的核核糖体DNA的内部转录间隔区（ITS）的序列来测试的假设，加那利群岛属Vieea是密切相关的Pulicaria节。Vieraeopsis，一个分类单元，有四个物种仅限于索科特拉岛和南部阿拉伯。ITS树不支持这种关系，尽管许多节点的支持度很低（自举值低于75%）。Vierea是地中海属Perralderia的姐妹（bootstrap支持率为74%）。我们认为，形态相似性之间的Vierea和Pulicaria组Vieraeopsis主要是由于形态趋同。因此得出结论，这两个类群没有共同的历史。分子系统发育研究的分类群被认为是代表Macaronesia和南部阿拉伯和/或遥远的非洲地区之间的假定地理联系的审查，也提出了。除了少数例外，大多数这些推定的关系都没有得到分子系统发育学的支持。额外的支序学研究，需要至少15个属或部分之间的Macaronesia，东/南非和南部阿拉伯半岛的主要disjunet植物地理分布。
We undertook a phylogenetic analysis of sequences of the internal transcribed spacers (ITS) of the nuclear ribosomal DNA to test the hypothesis that the Canary Island genus Vierea is closely related to Pulicaria sect. Vieraeopsis, a taxon with four species restricted to Socotra and Southern Arabia. The ITS tree does not support this relationship, although many of the nodes were weakly supported (bootstrap value below 75%). Vierea is sister to the Mediterranean genus Perralderia (bootstrap support 74%). We suggest that morphological similarities between Vierea and Pulicaria sect. Vieraeopsis are due mostly to morphological convergence. It is thus concluded that these two taxa do not share a common history. A review of molecular phylogenetic studies of taxa considered to represent putative biogeographical links between Macaronesia and Southern Arabia and/or distant regions of Africa, is also presented. With a few exceptions most of these putative relationships are not supported by molecular phylogenies. Additional cladistic studies are needed for at least 15 genera or sections with a predominant disjunet phytogeographical distribution between Macaronesia, East/South Africa and Southern Arabia.