Palice Zdenĕk, Schmitt Imke, Lumbsch H Thorsten
Institute of Botany, Academy of Sciences of the Czech Republic, CZ-25243 Průhonice, Czech Republic.
Mycol Res. 2005 Apr;109(Pt 4):447-51. doi: 10.1017/s0953756204002199.
We examined the phylogenetic position of Omphalina foliacea and its putative closest relative, the lichen-forming basidiomycete Lichenomphalia lobata. Both species are restricted to specific habitats in the high andine regions of tropical America. We generated nuclear ITS and LSU rDNA sequences of two collections of each species and analysed the data together with sequences of omphalinoid basidiomycetes retrieved from GenBank using a Bayesian and a maximum parsimony approach. Our analyses show that both, O. foliacea and L. lobata are lichenized basidiomycetes. L. lohata is related to other species of the genus Lichenomphalia, whereas O. foliacea is not closely related to other Omphalina or Lichenomphalia species, but probably belongs in the hymenochaetoid clade. The analysis of a nuclear LSU data set of a broader sampling of hymenochaetoid basidiomycetes supported the placement of O. foliacea in this clade, but did not reveal any close relative.
我们研究了叶状脐菇（Omphalina foliacea）及其假定的近缘种——形成地衣的担子菌叶状地脐菇（Lichenomphalia lobata）的系统发育位置。这两个物种都局限于热带美洲安第斯山脉高海拔地区的特定栖息地。我们生成了每个物种两个样本的核糖体DNA内转录间隔区（ITS）和大亚基（LSU）序列，并使用贝叶斯方法和最大简约法，将这些数据与从基因库中检索到的脐菇类担子菌序列一起进行分析。我们的分析表明，叶状脐菇和叶状地脐菇都是地衣化担子菌。叶状地脐菇与地脐菇属的其他物种相关，而叶状脐菇与其他脐菇属或地脐菇属物种没有密切关系，但可能属于刺革菌类分支。对更广泛的刺革菌类担子菌样本的核LSU数据集的分析支持了叶状脐菇在该分支中的位置，但未揭示任何近缘种。
