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Malassezia Species  Assignment PDF

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Added on  2021-12-17

Malassezia Species  Assignment PDF

   Added on 2021-12-17

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Running head: MALASSEZIA SPECIES 1
Malassezia Species
Student’s Name
Institutional Affiliation
Malassezia Species  Assignment PDF_1
MALASSEZIA SPECIES 2
Microscopic appearance (Microscopic cell morphology) of Malassezia species.
M. furfur cells are spherical and consist of a different bottleneck at one end. It is typically
found in single cell individuals although unlike other species of Malassezia it forms filaments
when it becomes its pathogenic form. M. dermatis appear as oval or round budding yeast-like
cells of 3 to 8 μm in diameter staining dark blue. The cells shape is ovoid, ellipsoidal or globose
and its budding is monopolar on a moderately broad base (Garrison & Arnold, 2018). On the
other hand, the shape of the cells of M. restricta is ovoid or globose, and budding is monopolar
on a relatively narrow base. The cells of M. japonica are short ovoid to cylindrical of about 33
μm with budding which is monopolar on a broad base.
Colony morphology on Sabouraud’s agar.
When malassezia species colonies are sowed in Sabouraud’s agar, M. dermatis due to its
lipophilic attributes form globular shaped yeast with its cells round shaped which appear
elongated maintaining a narrow base. M. furfur is lipophilic although able to produce small
colonies without supplementation of lipids in which its colonies appear to be cream to yellow-
brown and they appear smooth and soft and friable, often becoming brittle and wrinkled as they
age (Celis, Wösten & de Cock, 2017). The colonies of M. restricta appear small, flat or raised
colonies 1 to 2 mm in diameter on average, pale yellowish-brown, dull, smooth with a lobate
margins and M. japonica form flat, slightly wrinkled single colonies around 2 to 3 mm in
diameter, pale yellowish cream, dull and butyrous with a straight or folded margin.
Normal habitat.
Malassezia furfur needs an environment high in fats and oils to flourish since it is
lipophilic yeast hence lives on the epithelial cells of humans where it consumes the natural oils
Malassezia Species  Assignment PDF_2

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