The genus Malassezia with description of four new species

@article{Guho1996TheGM,
  title={The genus Malassezia with description of four new species},
  author={Eveline Gu{\'e}ho and Gillian Midgley and Jacques Guillot},
  journal={Antonie van Leeuwenhoek},
  year={1996},
  volume={69},
  pages={337-355},
  url={https://api.semanticscholar.org/CorpusID:31791799}
}
The genus Malassezia has been revised using morphology, ultrastructure, physiology and molecular biology to include seven species comprising the three former taxa M. furfur, M. pachydermatis and M. sympodialis, and four new taxa.
View on Springer
ncbi.nlm.nih.gov
528 Citations
Highly Influential Citations
31
Background Citations
125
Methods Citations
57
Results Citations
5

528 Citations

Infections by malassezia: new approachs

The taxonomical changes observed for the Malassezia species has led to the reassessment of the laboratory methodologies which were formerly used for the identification of the etiologic agent.

Twonew lipid-dependentMalassezia species fromdomestic animals

During a study on the occurrence of lipid-dependent Malassezia spp. in domestic animals, some atypical strains, phylogenetically related to Malassezia sympodialis Simmons et Guého, were shown to…

Classification of Yeasts of the Genus Malassezia by Sequencing of the ITS and D1/D2 Regions of DNA

The recent development of molecular techniques has improved the classification of this genus, allowing a more accurate differentiation among different species, and descriptions of new species should be done in a standardized manner, including phenotypic and molecular features.

Two new lipid-dependent Malassezia species from domestic animals.

The validation of these new taxa is further supported by analysis of the D1/D2 regions of the 26S rRNA gene, the ITS1-5.8S-ITS2 rRNA, the RNA polymerase subunit 1 and chitin synthase nucleotide sequences, and the amplified fragment length polymorphism patterns, which were all consistent in separating these new species from the other species of the genus, and those of the M. sympodialis species cluster.

Malassezia cuniculi sp. nov., a novel yeast species isolated from rabbit skin.

A new taxon is described, Malassezia cuniculi sp.

Biodiversity, phylogeny and ultrastructure.

The phylogeny, based on sequencing of the D1/D2 variable domains of the ribosomal DNA and the ITS regions, confirmed the basidiomycetous nature of these yeasts, which occupy an isolated position among the UstilaginomycETes.

Phylogenetic relationships of Malassezia species based on multilocus sequence analysis.

The phylogenetic study of the partial β-tubulin gene sequences indicated that this molecular marker can be used to assess diversity and identify new species and could help to estimate divergence times for the origin and diversification of Malassezia species.

Malassezia nana sp. nov., a novel lipid-dependent yeast species isolated from animals.

Five isolates of a novel species of the yeast genus Malassezia were isolated from animals in Japan and Brazil and showed that they were conspecific and belonged to the genus Malasseszia, which resembles M. dermatis and M. sympodialis, but can be distinguished from these species by its inability to use Cremophor EL as the sole lipid source and to hydrolyse aesculin.

Extracellular enzymatic activity of Malassezia spp. isolates

Dixon’s broth appeared to be a valid medium for the growth of all Malassezia spp, and data obtained from the other new species described after the revision of the genus appear to be quite homogeneous.

New lipid-dependent Malassezia species from parrots.

...

44 References

Morphological Variation in Malassezia and its Significance in Pityriasis Versicolor

Morphological variation among yeasts of the genus Malassezia has been recognized since their earliest descriptions and it is proposed to designate them as two separate species, M.f urfur and M. ovalis.

A reevaluation of the genus Malassezia by means of genome comparison

Results of a study of the genus Malassezia on the basis of genome characters confirm that two species should be maintained, M. furfur and M. pachydermatis. The two forms associated with skin disease,…

Polymorphism of Malassezia furfur.

Results suggest that P. orbiculare and P. ovale are stages in the complex developmental cycle of a single species (Malassezia furfur), but the three names should be preserved until the life cycle is more fully understood.

The diversity of Pityrosporum (Malassezia) yeasts in vivo and in vitro

In vivo both spherical and oval yeasts may be found in normal conditions on the skin and also associated with hyphae in scales from pityriasis versicolor, there is however generally a different distribution pattern on the body for two forms, which may indicate a different ecology for two distinct varieties.

The diversity ofMalassezia yeasts confirmed by rRNA sequence and nuclear DNA comparisons

The usefulness of sequencing for both taxonomic and epidemiological purposes is demonstrated, with Malassezia yeasts maintained as the unique taxon M. pachydermatis and lipid-dependent strains shown to be distributed among seven species.

Karyotyping of Malassezia Yeasts: Taxonomic and Epidemiological Implications

Electron microscopy of Malassezia furfur in tinea versicolor.

This electron microscope investigation of Malassezia furfur (parasitic phase) is basic information for taxonomic purposes. Skin was excised from lesions of tinea versicolor, fixed in paraformaldehyde…

Characterization of markedly lipid-dependent Malassezia pachydermatis isolates from healthy dogs.

Observations show that some M. pachydermatis isolates grow poorly when sub-cultured onto Sabouraud's dextrose agar and may be incorrectly identified as M. furfur if further studies are not performed.

CELL WALL ULTRASTRUCTURE AND DIAZONIUM BLUE B REACTION OF SPOROPACHYDERMIA QUERCUUM, BULLERA TSUGAE, AND MALASSEZIA SPP.

The finely laminar ultrastructure of the cell walls of Malassezia spp.

A study of the fatty acid metabolism of the yeast Pityrosporum ovale.

The yeast Pityrosporum ovale, a skin saprophyte, will only grow if fatty acids of chain length greater than C(10) are added to the culture medium. 9-Hydroxypalmitic acid is the major product of…