Improving phylogenetic inference of mushrooms with RPB1 and RPB2 nucleotide sequences (Inocybe; Agaricales).
Approximately 3000 bp across 84 taxa have been analyzed for variable regions of RPB1, RPB2, and nLSU-rDNA to infer phylogenetic relationships in the large ectomycorrhizal mushroom genus Inocybe (Agaricales; Basidiomycota). This study represents the first effort to combine variable regions of RPB1 and RPB2 with nLSU-rDNA for low-level phylogenetic studies in mushroom-forming fungi. Combination of the three loci increases non-parametric bootstrap support, Bayesian posterior probabilities, and resolution for numerous clades compared to separate gene analyses. These data suggest the evolution of at least five major lineages in Inocybe-the Inocybe clade, the Mallocybe clade, the Auritella clade, the Inosperma clade, and the Pseudosperma clade. Additionally, many clades nested within each major lineage are strongly supported. These results also suggest the family Crepiodataceae sensu stricto is sister to Inocybe. Recognition of Inocybe at the family level, the Inocybaceae, is recommended.[1]References
- Improving phylogenetic inference of mushrooms with RPB1 and RPB2 nucleotide sequences (Inocybe; Agaricales). Matheny, P.B. Mol. Phylogenet. Evol. (2005) [Pubmed]
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