Molecular phylogeny of Salix L. (Salicaceae) inferred from three chloroplast datasets and its systematic implications
Molecular phylogeny of Salix L. (Salicaceae) inferred from three chloroplast datasets and its systematic implications
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从三个叶绿体数据集推断的柳属（柳科）分子系统发育及其系统意义
DOI：
10.1002/tax.591004
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发表时间：
2010-02-01
期刊：
影响因子：
3.4
通讯作者：
Yang, Yong-Ping
中科院分区：
文献类型：
--
作者：
Chen, Jia-Hui;Sun, Hang;Yang, Yong-Ping
柳属是一个分类学上困难的属，其属的界限和属下的划分至今仍存在很大争议。利用叶绿体rbcL基因、trnD-T间隔区和atpB-rbcL间隔区序列对柳属植物进行系统发育分析。研究结果有力地支持了沙柳属植物。Toisusu和Chosenia形成一个单系群，证实Toisusu和Chosenia与Salix合并。在Salix s.l.内部，两个主要的分支是可识别的;一个包含柳亚属的物种（不包括Triangulae和Urbaniae组），新世界和旧世界物种分别形成强有力的支持分支;另一个包括Triangulae、Urbaniae、Chosenia组和Chamaetia和Veetia亚属的所有物种，后两个亚属形成一个强有力的支持亚分支，但分辨率低。本文提出了一个新的柳属下分类。先前确认的柳亚属分为三个亚属：柳属、Chosenia和Trialia，而Chamaetia亚属和Vealia亚属合并为Vealia亚属。
Salix is a taxonomically difficult genus and its generic limits and infrageneric division are still highly controversial. We employed sequences of the chloroplast rbcL gene, trnD-T spacer and atpB-rbcL spacer for phylogenetic analyses of Salix. The results strongly support that Salix. Toisusu and Chosenia form a monophyletic group, confirming the merge of Toisusu and Chosenia with Salix. Within Salix s.l., two major clades are recognizable; one contains species of subgenus Salix (excluding sections Triandrae and Urbanianae), with the New World and the Old World species forming strongly supported clades, respectively; and the other includes sections Triandrae, Urbanianae, Chosenia and all species of subgenera Chamaetia and Vetrix, with the latter two subgenera forming a robustly supported subclade but with low resolution. A new infrageneric classification of Salix is herein proposed. The previously recognized subgenus Salix is split into three subgenera: Salix, Chosenia and Triandrae, and subgenera Chamaetia and Vetrix are combined as subgenus Vetrix.