Emendation of Dioszegia with redescription of Dioszegia hungarica and two new combinations, Dioszegia aurantiaca and Dioszegia crocea.

Dioszegia zsoltii sp. nov., a new ballistoconidium-forming yeast species with two varieties.

“…Assimilation of carbon compounds: ( Table 3). The GϩC contents of the two varieties of the new species are significantly different from those of D. hungarica and D. crocea (Table 2), but similar to that of D. aurantiaca (Takashima et al, 2001). In addition to their difference in D-mannitol assimilation reaction, the vegetative cell morphology of D. zsoltii var.…”

“…1). These two strains also have the signature sequences of the genus Dioszegia found in 18S rDNA (Takashima et al, 2001). Therefore, the group of yeast strains represented by CH 2.068 and CH 2.497 were assigned to Dioszegia.…”

“…Therefore, these strains were originally classified in the genus Bullera Derx according to the recent taxonomic system of basidiomycetous yeasts (Boekhout, 1998;Boekhout and Nakase, 1998). In this genus, the Yunnan strains were phenotypically similar to the two orange-colored species Bullera armeniaca and Bullera crocea, which were recently transferred to the genus Dioszegia by Takashima et al (2001).…”

Dioszegia rishiriensis sp. nov., a novel yeast species from soil collected on Rishiri Island, Hokkaido, Japan

“…With the progress of molecular techniques, the taxonomic significance of ballistoconidium-forming activity has been discredited as a result of numerous phylogenetic studies of ballistoconidiogenous and nonballistoconidiogenous yeasts (for example, Fell et al, 2000;Scorzetti et al 2002;Takashima & Nakase, 1999). Based on high DNA-DNA relatedness between Cryptococcus hungaricus (the type species of the genus Dioszegia) and Bullera armeniaca, Takashima et al (2001) stated that the two were conspecific. As a result, they reaffirmed the genus Dioszegia to be a distinct genus based on sequence signatures in the small-subunit (18S) rRNA gene sequence and reinstated D. hungarica with two new combinations for phylogenetically closely related species, Dioszegia aurantiaca and Dioszegia crocea.…”

Cryptococcus tibetensis sp. nov., a novel basidiomycetous anamorphic yeast species isolated from plant leaves

“…Their ability to utilize inositol was variable; strain XZ-22A1 weakly utilized the compound but strains XZ-11B2, XZ-20A3 and XZ-27A3 did not. According to the current taxonomy of basidiomycetous yeasts, the Tibetan strains most likely belonged to the genera Cryptococcus, Rhodotorula or Dioszegia (Boekhout, 1998;Fell and Statzell-Tallman, 1998a, b;Takashima et al, 2001). However, they could not be definitely assigned to any of the genera based on the phenotypical criteria.…”