Phylogenetic relationships within Orchidaceae based on a low-copy nuclear coding gene, Xdh: Congruence with organellar and nuclear ribosomal DNA results
Phylogenetic relationships within Orchidaceae based on a low-copy nuclear coding gene, Xdh: Congruence with organellar and nuclear ribosomal DNA results
复制标题
DOI：
10.1016/j.ympev.2010.03.003
复制
发表时间：
2010-08-01
影响因子：
4.1
通讯作者：
Chase, Mark W.
中科院分区：
文献类型：
--
作者：
Gorniak, Marcin;Paun, Ovidiu;Chase, Mark W.
利用简约和贝叶斯分析，我们估计了兰科内部的更高层次的关系，重点是亚科和部落。获得了兰科126属154个分类群和芦笋外群科154个分类群的低拷贝核蛋白基因Xdh的部分DNA序列。Xdh树的总体拓扑结构与先前发表的基于质体蛋白质编码基因和非编码核糖体DNA的结构一致。先前确认的五个亚家族是单系的，并且得到了很好的支持。结果表明，香兰科和附着物科/兰科的雌雄同株是独立进化的。通过分析，明确了附着物科各部落间的关系，如：Vandeae sensu lato to Collabieae、Epidendreae to Calypsoeae、Malax-ideae to Dendrobieae。此外，还首次在广泛的分子系统发育框架中评价了Corallorhiza、Gastrodia、Limodorum、Neottia、Wullschlaegelia等植物的亲缘关系，包括Bromheadia、Imerinaea、Sirhookera等。(c) 2010爱思唯尔公司版权所有。
Using parsimony and Bayesian analyses, we estimated higher-level relationships within Orchidaceae, focusing on subfamilies and tribes. DNA sequences of part of the low-copy nuclear protein gene Xdh were obtained for 154 taxa including 126 genera of Orchidaceae and outgroup families of Asparagales. The general topology of the Xdh trees is congruent with those published previously based on plastid protein-coding genes and non-coding nuclear ribosomal DNA. The five subfamilies previously recognized are monophyletic and well supported. The results indicate that monandrous condition evolved independently in Vanilloideae and Epidendroideae/Orchidoideae. The analysis clarifies relationships between tribes of Epidendroideae such as Vandeae sensu lato to Collabieae, Epidendreae to Calypsoeae and Malax-ideae to Dendrobieae. Also relationships of Bromheadia, Imerinaea, Sirhookera, and achlorophyllous species of Corallorhiza, Gastrodia, Limodorum, Neottia, Wullschlaegelia are for the first time evaluated in a broad molecular phylogenetic framework. (c) 2010 Elsevier Inc. All rights reserved.