MSA - Systematics/Evolution
Sjökvist, Elisabet , Larsson, Ellen , Larsson, Karl-Henrik .
A multi-locus phylogeny of the Polyporales.
The recently redefined order Polyporales consists of roughly 1800 species of primarily polyporoid and corticioid fungi. Previous studies on the polyporoid clade have only used sequences from one or a few rDNA genes, resulting in phylogenies with low support on branches. This study aims to identify higher-level relationships within Polyporales using multi-locus phylogenies. For this purpose two matrices were composed. One is a matrix with gene markers RPB2, EF1-α, nLSU, 5.8S and mtSSU, for 53 in-group taxa. The other a super-matrix with RPB2, EF1-α, SSU, nLSU, 5.8S, mtSSU, and ATP6, for 84 in-group taxa. Preliminary analyses on the smaller dataset result in a strong support for the order in Bayesian analysis, but with only moderate support in Jackknife analysis. Several high-support clades could be identified in both analyses, which we temporarily acknowledge as Byssomeruliaceae, Fomitopsidaceae, Meruliaceae, Phanerochaetaceae, Podoscyphaceae, Polyporaceae and Steccherinaceae. However, several taxa remain that in Bayesian analysis show little affinity to other taxa, and in Jackknife analysis little or no affinity to other taxa. The commonly identified Antrodia clade, core polyporoid clade, phlebioid clade and residual polyporoid clade are discussed. This study is the first to present a comprehensive family-level multi-locus phylogeny of the Polyporales.
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1 - University of Gothenburg, Department of Plant and Environmental Sciences, Box 461, Göteborg, SE-40530, Sweden
Presentation Type: Oral Paper:Papers for Topics
Location: Cottonwood D/Snowbird Center
Date: Monday, July 27th, 2009
Time: 2:15 PM