The simple-septate basidiomycetes: a synopsis

Abstract

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

Dr. Robert Bauer (1950-2014) in memoriam: botanist, mycologist, and electron microscopist

“…However, subcellular characteristics of cell walls and SPBs indicate a basal position of M. osmundae in Basidiomycota, an interpetation supported by molecular data (Weiß et al 2004a, Aime et al 2006. The order Mixiales and the class Mixiomycetes were introduced by Bauer et al (2006).…”

“…The nomenclature for the subdivision Pucciniomycotina of Basidiomycota was introduced by Bauer et al (2006). It included a systematic and phylogenetic rearrangement of taxa down to ordinal level ( Fig.…”

“…These subcellular organelles support the interpretation that Cryptomycocolacomycetes range in a basal position of basidiomycetous phylogeny, a view supported by molecularly based hypotheses . The apparently convergent occurrence of the colacosomes, unique mycoparasitic cell organelles in Cryptomycocolacomycetes and Microbotryomycetes was discussed by Bauer et al (2006).…”

Biochemical and molecular characterization of a new pullulan producer Rhodosporidium paludigenum PUPY-06

“…A melanin-free pullulan-producing fungal strain of Rhodosporidium paludigenum was isolated from decaying leaves of Ficus lacor. R. paludigenum is a teleomorphic fungus which belongs to subkingdom Dikarya, division Basidiomycota, Pucciniomycotina [30], class Microbotryomycetes [31], order Sporidiobolales [32], and family Sporidiobolaceae [33]. It is included in the Incertae sedis genera of Sporidiobolales.…”

“…The isolate was inoculated in glucose-nitrogen base medium and incubated at a range of temperature (25,30,35,37,40, and 42°C) for 7 days. The growth of fungal isolate was observed at a particular temperature.…”