The simple-septate basidiomycetes: a synopsis

Robert Bauer, Dominik Begerow, José Paulo Nunes de Sousa Sampaio, Michael Weiss, Franz Oberwinkler

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133 Citations (Scopus)


The simple-septate basidiomycetes comprise more than 8,000 species that show a high morphological and ecological heterogeneity. To gain insight in the phylogenetic relationships within this group, we compared several ultrastructural features such as septal pore apparatus, form, and behavior of the spindle pole bodies, types of host-parasite interaction, presence or absence of colacosomes, symplechosomes, atractosomes, and cystosomes as well as nuclear rDNA sequences coding for small- and large-subunit rRNA. Based on our integrated analysis, we propose a new classification system for the simple-septate basidiomycetes with the subphylum Pucciniomycotina and the classes Agaricostilbomycetes, Atractiellomycetes, Classiculomycetes, Cryptomycocolacomycetes, Cystobasidiomycetes, Microbotryomycetes, Mixiomycetes, and Pucciniomycetes. We also propose the pucciniomycotinous taxa Cystobasidiales, Erythrobasidiales, Helicobasidiales, Mixiales, Naohideales, Pachnocybales, Spiculogloeales, and Kondoaceae and the new subphyla Agaricomycotina (equivalent to the current Hymenomycetes) and Ustilaginomycotina (equivalent to the current Ustilaginomycetes).
Original languageEnglish
Pages (from-to)41-66
Number of pages26
JournalMycological Progress
Issue number1
Publication statusPublished - Mar 2006


  • Taxonomy
  • Ultrastructure
  • Basidiomycetes
  • Fungal systematics
  • Molecular phylogenetics


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