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Rhodotorula
''Rhodotorula'' is a genus of unicellular pigmented yeasts, part of the division Basidiomycota. It is readily identifiable by distinctive orange/red colonies when grown on SDA (Sabouraud's Dextrose Agar). This distinctive color is the result of pigments that the yeast creates to block out certain wavelengths of light that would otherwise be damaging to the cell. ==Habitat==
''Rhodotorula'' is a common environmental inhabitant. It can be cultured from soil, water, milk, fruit juice, and air samples.〔Fernanda Wirth and Luciano Z. Goldani (”Epidemiology of Rhodotorula: An Emerging Pathogen” ) Interdisciplinary Perspectives on Infectious Diseases, 2014〕 It is able to scavenge nitrogenous compounds from its environment remarkably well, growing even in air that has been carefully cleaned of any fixed nitrogen contaminants. In such conditions, the nitrogen content of the dry weight of ''Rhodotorula'' can drop as low as 1%, compared to around 14% for most bacteria growing in normal conditions.〔Postgate, John: "The Outer Reaches of Life", page 132-134. Cambridge University Press, 1994〕
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