New insights into classification and evolution of the Lecanoromycetes (Pezizomycotina, Ascomycota) from phylogenetic analyses of three ribosomal RNA- and two protein-coding genes
New insights into classification and evolution of the Lecanoromycetes (Pezizomycotina, Ascomycota) from phylogenetic analyses of three ribosomal RNA- and two protein-coding genes
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DOI：
10.1080/15572536.2006.11832636
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发表时间：
2006-11
期刊：
影响因子：
2.8
通讯作者：
J. Miadlikowska;F. Kauff;V. Hofstetter;E. Fraker;M. Grube;J. Hafellner;Valérie Reeb;B. Hodkinson
中科院分区：
文献类型：
--
作者：
J. Miadlikowska;F. Kauff;V. Hofstetter;E. Fraker;M. Grube;J. Hafellner;Valérie Reeb;B. Hodkinson
蜡蚧菌纲包括大多数地衣形成真菌物种（> 13500），因此在表型复杂性方面是所有真菌中最多样化的类别之一。我们报告系统发育关系内的蜡蚧菌导致贝叶斯和最大似然分析与互补的后验概率和引导支持值的基础上，三个组合的多位点数据集使用超矩阵方法。在Eriksson的蜡蚧菌分类（Ascomycota-2006 Myconet 12：1-82）中，目前确认的10个目中的9个和64个科中的43个在本次采样中得到了代表。我们的分析强烈支持Acarosporomycetidae和Ostropomycetidae作为单系，而最大的子类，Lecanoromycetidae的划界，仍然不确定。无论将来如何划分蜡蚧菌科，应将红果科和脐菌科提升到有序级。这项研究表明，最近的分类包括几个非单系类群在不同的职级，需要重新界定。我们的分类证实，地衣形态学不能一致地应用于地衣形成真菌的分类。与逐渐增加的分类群相关的缺失数据的增加在某些情况下导致了预期的支持损失，但我们也观察到许多节间的统计支持有所改善。我们的结论是，系统发育合成所选择的分类组应包括一个全面的系统发育的信心评估的基础上，使用不同的方法和一个渐进的分类群抽样的数量越来越多的分类群，即使它涉及越来越多的缺失数据。
The Lecanoromycetes includes most of the lichen-forming fungal species (>13 500) and is therefore one of the most diverse class of all Fungi in terms of phenotypic complexity. We report phylogenetic relationships within the Lecanoromycetes resulting from Bayesian and maximum likelihood analyses with complementary posterior probabilities and bootstrap support values based on three combined multilocus datasets using a supermatrix approach. Nine of 10 orders and 43 of 64 families currently recognized in Eriksson’s classification of the Lecanoromycetes (Outline of Ascomycota—2006 Myconet 12:1–82) were represented in this sampling. Our analyses strongly support the Acarosporomycetidae and Ostropomycetidae as monophyletic, whereas the delimitation of the largest subclass, the Lecanoromycetidae, remains uncertain. Independent of future delimitation of the Lecanoromycetidae, the Rhizocarpaceae and Umbilicariaceae should be elevated to the ordinal level. This study shows that recent classifications include several nonmonophyletic taxa at different ranks that need to be recircumscribed. Our phylogenies confirm that ascus morphology cannot be applied consistently to shape the classification of lichen-forming fungi. The increasing amount of missing data associated with the progressive addition of taxa resulted in some cases in the expected loss of support, but we also observed an improvement in statistical support for many internodes. We conclude that a phylogenetic synthesis for a chosen taxonomic group should include a comprehensive assessment of phylogenetic confidence based on multiple estimates using different methods and on a progressive taxon sampling with an increasing number of taxa, even if it involves an increasing amount of missing data.