The genus Malassezia with description of four new species

@article{Guho2004TheGM,
  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={2004},
  volume={69},
  pages={337-355}
}
The genus Malassezia has been revised using morphology, ultrastructure, physiology and molecular biology. As a result the genus has been enlarged to include seven species comprising the three former taxa M. furfur, M. pachydermatis and M. sympodialis, and four new taxa M. globosa, M. obtusa, M. restricta and M. slooffiae. The descriptions of all the species include morphology of the colonies and of the cells, together with ultrastructural details. The physiological properties studied were the… 
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References

SHOWING 1-10 OF 45 REFERENCES
Morphological Variation in Malassezia and its Significance in Pityriasis Versicolor
TLDR
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.
TLDR
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
TLDR
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
TLDR
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.
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.
TLDR
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.
TLDR
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
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