Phylogenetic Relationship of Tropical Asian <i>Ardisia</i> and Relatives (<i>Primulaceae</i>) Shows Non-monophyly of Recognized Genera and Subgenera

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  • 熱帯アジア産ヤブコウジ属<i>Ardisia</i>（サクラソウ科）およびその近縁属の分子系統解析により示された属および亜属の非単系統性
  • Phylogenetic Relationship of Tropical Asian Ardisia and Relatives (Primulaceae) Shows Non-monophyly of Recognized Genera and Subgenera

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Abstract

<p>The most comprehensive phylogenetic tree showing relationships among the large tropical genus Ardisia and related genera of subfamily Myrsinoideae (Primulaceae), based on nucleotide sequences of the nuclear ribosomal internal transcribed spacer (nrITS) region from 177 samples predominantly from the Neotropics, East Asia, Indo-China and Malesia is presented. Bayesian and maximum likelihood analyses showed that A. opegrapha and Labisia consecutively branched off at the basal nodes of the tree, and the remaining taxa can be divided into two major clades. Other related genera were scattered in the two clades and formed clades with members of Ardisia. Thus, Ardisia is not monophyletic as currently circumscribed. The phylogenetic tree also indicated that the traditional subgeneric circumscription only partially reflects the phylogenetic relationship within Ardisia. The results clearly suggest the need for revising the generic and subgeneric circumscription of Ardisia and its relatives.</p>

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