Diversity and phylogeny of basidiomycetous yeasts from plant leaves and soil: Proposal of two new orders, three new families, eight new genera and one hundred and seven new species (original) (raw)
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Studies in Mycology, 2015
The Tremellomycetes (Basidiomycota) contains a large number of unicellular and dimorphic fungi with stable free-living unicellular states in their life cycles. These fungi have been conventionally classified as basidiomycetous yeasts based on physiological and biochemical characteristics. Many currently recognised genera of these yeasts are mainly defined based on phenotypical characters and are highly polyphyletic. Here we reconstructed the phylogeny of the majority of described anamorphic and teleomorphic tremellomycetous yeasts using Bayesian inference, maximum likelihood, and neighbour-joining analyses based on the sequences of seven genes, including three rRNA genes, namely the small subunit of the ribosomal DNA (rDNA), D1/D2 domains of the large subunit rDNA, and the internal transcribed spacer regions (ITS 1 and 2) of rDNA including 5.8S rDNA; and four protein-coding genes, namely the two subunits of the RNA polymerase II (RPB1 and RPB2), the translation elongation factor 1-α...
Impact of DNA data on fungal and yeast taxonomy
Microbiology Australia, 2011
The species richness and diversity existing in microorganisms are unparalleled on our planet. In recent years, the use of molecular techniques for the detection and identification of microorganisms, especially through DNA sequencing, has revolutionised the way taxonomists look at the systematics of a species, especially when applying multilocus sequence data and concepts such as the genealogical concordance phylogenetic species recognition (GCPSR) concept1. Particularly problematic topics arising in the fungi are, for example, naming pleomorphic fungi (that is, fungi for which a teleomorph, meaning sexual form, and one or more anamorphs, meaning asexual forms, are formed), polyphyletic genera (that is, the same genus being presented in several distinct phylogenetic lineages or clades), morphospecies (a species which is differentiated from other species based on its distinctive morphological characters) that in fact represent distinct phylogenetic lineages and how to deal with specie...