Molecular phylogenetic analysis of Euphorbiaceae sensu stricto based on plastid and nuclear DNA sequences and ovule and seed character evolution
Molecular phylogenetic analysis of Euphorbiaceae sensu stricto based on plastid and nuclear DNA sequences and ovule and seed character evolution
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DOI：
10.1007/s10265-007-0090-3
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发表时间：
2007-07-01
影响因子：
2.8
通讯作者：
Tokuoka, Toru
中科院分区：
文献类型：
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作者：
Tokuoka, Toru
利用大戟科85种83属的rbcL、atpB、matK和18S rDNA序列进行了系统发育分析。4个分子标记的综合分析只得到了一个最精简的树，并产生了新的支系，包括Euphorbioideae + Acalyphoideae s.s，亚支系A2 + A3，亚支系A5 + A6和一个连接亚支系A2- a8的支系。除大戟亚科外，所有大戟科植物都可能有一个palisadal外系。内被管束的存在和较厚的内被管束的存在分别是不开孔和铰接的类巴豆的分支和大分支的突触形态，分别是不开孔和铰接的类巴豆。讨论了假种皮和外被维管束的特征。所选择的胚胎学性状与分子系统发育密切相关。当先前研究和本研究的分子系统发育分析结果与所选的胚胎学特征进行调整时，除了由Euphorbioideae + Acalyphoideae s.s. +不开孔的crotonoids +铰接的crotonoids + Adenoclineae s.l.组成的分支和Acalyphoideae s.s中连接亚分支A4-A8的分支外，所有大戟科分支都得到了支持。
A phylogenetic analysis of Euphorbiaceae sensu stricto is presented using sequences from rbcL, atpB, matK and 18S rDNA from 85 species and 83 genera. The combined analysis of four molecular markers resulted in only one most parsimonious tree and also generated new supported clades, which include Euphorbioideae + Acalyphoideae s.s., subclades A2 + A3, subclades A5 + A6 and a clade uniting subclades A2-A8 within Acalyphoideae s.s. A palisadal exotegmen is a possible synapomorphy for all the Euphorbiaceae, except for the subfamily Peroideae. The presence of vascular bundles in the inner integument and a thick inner integument were shown to be synapomorphies for the clade of inaperturate and articulated crotonoids and for the large clade of Euphorbioideae, Acalyphoideae s.s., inaperturate and articulated crotonoids, respectively. Characters of the aril and vascular bundles in the outer integument are discussed. The selected embryological characters were seen to be highly correlated with the molecular phylogeny. When the results of molecular phylogenetic analysis of a previous study and this study were adjusted along with the selected embryological characters, all clades within Euphorbiaceae were supported except for a clade comprising Euphorbioideae + Acalyphoideae s.s. + inaperturate crotonoids + articulated crotonoids + Adenoclineae s.l. and a clade uniting subclades A4-A8 within Acalyphoideae s.s.