Phylogenetics, character evolution, and distribution patterns of the greenbriers, Smilacaceae (Liliales), a near-cosmopolitan family of monocots
Phylogenetics, character evolution, and distribution patterns of the greenbriers, Smilacaceae (Liliales), a near-cosmopolitan family of monocots
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DOI：
10.1111/boj.12096
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发表时间：
2013-12-01
影响因子：
2.4
通讯作者：
Fu, Chengxin
中科院分区：
文献类型：
--
作者：
Qi, Zhechen;Cameron, Kenneth M.;Fu, Chengxin
菝葜科（Smilacaceae）由菝葜属（Smilax）和异菝葜属（Heterosilax）组成，是一个世界性的大科，有超过200种，大多数是攀缘单子叶植物，具有互生的叶，特征是网状脉序，一对叶柄卷须和通常多刺的茎。自1753年林奈命名该属以来，对菝葜属植物的研究已经有很长的历史，但这个雌雄异株的家族的系统发育历史仍然不清楚。在这里，我们提出的结果的基础上，核核糖体内转录间隔区（nrITS）和质体matK和rpl 16内含子DNA序列数据从125分类群的菝葜科。我们的分类单元采样涵盖了所有科的菝葜属和Heterosilax和主要分布区的家庭;从Ripogonaceae和Philesiaceae的物种被用作外群。我们的分子分析表明，系统发育关系在很大程度上违背了传统的形态学分类的家庭，而不是显示出明显的地理模式之间的物种分支。以前被确认的属Heterosmilax被发现嵌入在Smilax中。该科中的物种主要分为新世界和旧世界分支，除了一个单一的物种谱系，糙叶菝葜（Smilax aspera），它是该科其余物种的姐妹，但统计支持不足。祖先特征状态的重建和分支间分布格局的研究为该群的分类学修订和历史地理学研究提供了重要信息。(c)2013年，伦敦林奈学会，林奈学会植物学杂志，2013年，173，535-548。
Smilacaceae, composed of Smilax and Heterosmilax, are a cosmopolitan family of >200 species of mostly climbing monocots with alternate leaves characterized by reticulate venation, a pair of petiolar tendrils and usually prickly stems. Although there has been a long history of studying Smilax since Linnaeus named the genus in 1753, the phylogenetic history of this dioecious family remains unclear. Here we present results based on nuclear ribosomal internal transcribed spacer (nrITS) and plastid matK and rpl16 intron DNA sequence data from 125 taxa of Smilacaceae. Our taxon sampling covers all sections of Smilax and Heterosmilax and major distribution zones of the family; species from Ripogonaceae and Philesiaceae are used as outgroups. Our molecular analysis indicates that phylogenetic relationships largely contradict the traditional morphological classification of the family, instead showing a conspicuous geographical pattern among the species clades. The previously recognized genus Heterosmilax was found to be embedded in Smilax. Species in the family are separated into primarily New World and Old World clades, except for a single species lineage, Smilax aspera, that is sister to the remaining species of the family, but with poor statistical support. Ancestral character state reconstructions and examination of distribution patterns among the clades provide important information for future taxonomic revisions and historical biogeography of the group.(c) 2013 The Linnean Society of London, Botanical Journal of the Linnean Society, 2013, 173, 535-548.