Two new yeasts, Trichosporon debeurmannianum sp. nov. and Trichosporon dermatis sp. nov., transferred from the Cryptococcus humicola complex.

Sugita, Takashi; Takashima, Masako; Nakase, Takashi; Ichikawa, Tomoe; Ikeda, Reiko; Saitô, Takako

doi:10.1099/00207713-51-3-1221

Cited by 33 publications

(19 citation statements)

References 22 publications

(17 reference statements)

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“…An additional clade, Brassicae, was recognized by D1/D2 sequence analyses with expanded taxon sampling including several novel species isolated from bat guano samples (Sugita et al, 2005). These major clades of Trichosporon correspond to the serotypes associated with the occurrence of summer-type hypersensitivity pneumonitis as well as to the ubiquinone types (Sugita et al, 2001(Sugita et al, , 2005. A phylogenetic tree, reconstructed from the ITS and D1/D2 sequences (about 1.1 kb) of 14 Trichosporon species including the novel species from this study, showed that T. xylopini sp.…”

Section: Resultsmentioning

confidence: 99%

Trichosporon xylopini sp. nov., a hemicellulose-degrading yeast isolated from the wood-inhabiting beetle Xylopinus saperdioides

Gujjari

Suh

Lee

et al. 2011

International Journal of Systematic and Evolutionary Microbiology

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Four arthroconidium-producing yeasts were isolated from the gut of wood-inhabiting tenebrionid and passalid beetles. The rRNA genes of these yeast strains were sequenced, compared and analysed. The sequence results and other taxonomic characterizations placed two of the strains into Trichosporon porosum, and the remaining strains, EH024T and EH026 which were isolated from Xylopinus saperdioides (Coleoptera: Tenebrionidae), into a novel species of the genus Trichosporon in the Porosum clade. Strain EN6S23 was independently isolated from forest soil in Taiwan and was identified as the same novel species based on identical sequences in the internal transcribed spacers (ITS) and the D1/D2 region of the LSU rRNA gene and similar physiological characteristics to those of strains EH024T and EH026. The three strains can assimilate cellulose and xylan as sole carbon source, and are clearly distinguished from their closest taxon, T. porosum, by 14 nt differences in the ITS and D1/D2 region. These strains did not reproduce sexually under the laboratory conditions tested. The novel species is proposed as Trichosporon xylopini sp. nov. (type strain EH024T = ATCC MYA-4670T = CBS 11841T).

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Section: Resultsmentioning

confidence: 99%

Trichosporon xylopini sp. nov., a hemicellulose-degrading yeast isolated from the wood-inhabiting beetle Xylopinus saperdioides

Gujjari

Suh

Lee

et al. 2011

International Journal of Systematic and Evolutionary Microbiology

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“…With the exception of Rhodotorula spp. and Cryptococcus neoformans, however, basidiomycetous yeasts, such as C. albidus, C. diffluens, T. asahii, and T. dermatis, appear to be resistant to 5-FC (14,15). Some strains of C. albidus and C. diffluens are also resistant to azole agents, such as fluconazole and itraconazole (15).…”

Section: Discussionmentioning

confidence: 99%

The First Isolation of Ustilaginomycetous Anamorphic Yeasts, Pseudozyma Species, from Patients' Blood and a Description of Two New Species: P. parantarctica and P. thailandica

Sugita

Takashima

Poonwan

et al. 2003

Microbiology and Immunology

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The genus Pseudozyma is ustilaginomycetous anamorphic yeasts, and are mainly isolated from plants. We isolated three Pseudozyma strains from the blood of patients in Thailand. While one isolate was identified as P. antarctica by rDNA sequence analysis, the other two were considered to be new species and were named P. parantarctica and P. thailandica. The three isolates proved to be resistant to 5‐flucytosine, and P. thailandica was also resistant to fluconazole and itraconazole. As far as we know, this is the first isolation of Pseudozyma strains from humans. The two new species are described.

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“…Eight strains were suspected to be undescribed species. We found that three of these strains produced arthroconidia and two novel species in the genus Trichosporon have been proposed to accommodate them (Sugita et al, 2001). The remaining five strains were shown to be divergent on the basis of sequence analyses of the 18S rDNA and ITS regions.…”

Section: Introductionmentioning

confidence: 90%

Reclassification of the Cryptococcus humicola complex.

Takashima¹,

Sugita²,

Saitô³

et al. 2001

International Journal of Systematic and Evolutionary Microbiology

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Ten strains of the Cryptococcus humicola complex were reclassified on the basis of sequence analyses of 18S rDNA and internal transcribed spacer regions and DNA-DNA reassociation experiments. They were differentiated into seven species including C. humicola. , since the name Cryptococcus albidus (Saito) C. E. Skinner has already been recognized for a distinct species within the genus Cryptococcus. Strains possessing either Q-9 or Q-10 have been reported to occur in C. humicola ; however, after reclassification, the ubiquinone type of the species in each phylogenetic group was shown to be uniform, indicating that it is a useful criterion for the taxonomy of the Trichosporonales.

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Two new yeasts, Trichosporon debeurmannianum sp. nov. and Trichosporon dermatis sp. nov., transferred from the Cryptococcus humicola complex.

Cited by 33 publications

References 22 publications

Trichosporon xylopini sp. nov., a hemicellulose-degrading yeast isolated from the wood-inhabiting beetle Xylopinus saperdioides

Trichosporon xylopini sp. nov., a hemicellulose-degrading yeast isolated from the wood-inhabiting beetle Xylopinus saperdioides

The First Isolation of Ustilaginomycetous Anamorphic Yeasts, Pseudozyma Species, from Patients' Blood and a Description of Two New Species: P. parantarctica and P. thailandica

Reclassification of the Cryptococcus humicola complex.

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