Phylogenetic analyses of Malpighiales using plastid and nuclear DNA sequences, with particular reference to the embryology of Euphorbiaceae sens. str.
Phylogenetic analyses of Malpighiales using plastid and nuclear DNA sequences, with particular reference to the embryology of Euphorbiaceae sens. str.
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DOI：
10.1007/s10265-006-0025-4
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发表时间：
2006-08
影响因子：
2.8
通讯作者：
Toru Tokuoka;H. Tobe
中科院分区：
文献类型：
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作者：
Toru Tokuoka;H. Tobe
我们利用23科103属的rbcL、atpB、matK和18SrDNA的序列，对该目内部的亲缘关系进行了系统发育分析。从几个独立的和不同的组合分析中，使用所有序列数据的四基因分析提供了最好的分辨率，产生了单一的最简约的树。在Malighiales[Bootstrap Support(BS)100%]中，由一个家庭或一组家庭组成的8个主要分支先后出现分歧，但没有一个包含超过6个家庭的分支获得超过50%的BS。相反，获得了10个支持科之间和科之间密切关系的顶生分支(>；50%BS)，例如，在巴兰科和金鸡纳科之间；乳牛科和杨柳科之间；叶下科和胡桃科之间。大戟科植物的单子体。Str.都得到了大力支持(BS 100%)，但其姊妹群体尚不清楚。大戟科植物Str.由两个基本不同的分支组成(BS 100%)：一个通向聚类群(毛果、克卢提亚、佩拉和三角)，另一个通向家族的其他成员。后者具有共同的栅状突，而不是管状外被膜作为形态上的联会。角叉亚科(不包括双壳亚科和聚类群)和大尾亚科都是单系分类，而巴豆亚科是副系分类，需要更全面的分析。
We present phylogenetic analyses of Malpighiales, which are poorly understood with respect to relationships within the order, using sequences fromrbcL,atpB,matKand 18SrDNA from 103 genera in 23 families. From several independent and variously combined analyses, a four-gene analysis using all sequence data provided the best resolution, resulting in the single most parsimonious tree. In the Malpighiales [bootstrap support (BS) 100%], more than eight major clades comprising a family or group of families successively diverged, but no clade containing more than six families received over 50% BS. Instead, ten terminal clades that supported close relationships between and among families (>50% BS) were obtained, between, for example, Balanopaceae and Chrysobalanaceae; Lacistemataceae and Salicaceae; and Phyllanthaceae and Picrodendraceae. The monophyly of Euphorbiaceae sens. str. were strongly supported (BS 100%), but its sister group was unclear. Euphorbiaceae sens. str. comprised two basally diverging clades (BS 100%): one leading to theClutiagroup (Chaetocarpus,Clutia,PeraandTrigonopleura), and the other leading to the rest of the family. The latter shared a palisadal, instead of a tracheoidal exotegmen as a morphological synapomorphy. While both Acalyphoideae (excludingDicoeliaand theClutiagroup) and Euphorbioideae are monophyletic, Crotonoideae were paraphyletic, requiring more comprehensive analyses.