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Cryptococcus is a genus of fungi in the family Cryptococcaceae that includes both yeasts and filamentous species. The filamentous, sexual forms or teleomorphs were formerly classified in the genus Filobasidiella, while Cryptococcus was reserved for the yeasts. Most yeast species formerly referred to Cryptococcus have
The Cryptococcaceae are a family of fungi in the order Tremellales.The family currently contains two genera.Some species produce filamentous, sexual states with distinctive basidia and are parasites of other fungi.
In the United States, the incidence of cryptococcosis is estimated to be about 0.4-1.3 cases per 100,000 population and 2-7 cases per 100,000 in people affected with AIDS with a case fatality ratio of about 12%. Since 1990 the incidence of AIDs-associated cryptococcosis has fallen by 90% due to the proliferation of antiretroviral therapy.
Cryptococcus neoformans is an encapsulated basidiomycetous yeast [1] belonging to the class Tremellomycetes and an obligate aerobe [2] that can live in both plants and animals. Its teleomorph is a filamentous fungus , formerly referred to Filobasidiella neoformans .
Solicoccozyma terrea (synonym Cryptococcus terreus) is a species of fungus in the family Piskurozymaceae. It is only known from its yeast state. In this state, it can use glucose, lactose, galactose and potassium nitrate. The cells are oval with mucous capsules. Cultures of the yeast are cream at first, becoming tan with a “tough” surface skin.
Naganishia albidosimilis (synonym Cryptococcus albidosimilis) [1] is a species of fungus in the family Filobasidiaceae. It is currently only known from its yeast state, isolated from soil in Antarctica. [2] When plated on agar Naganishia albidosimilis produces colonies that are shining white. The colonies appear to be mucosoid when plated on agar.
Cryptococcus ater is a species of Cryptococcus that has some unique characteristics. When grown on agar it typically produces cream colonies, however when grown on neopeptone agar slants, the colonies turn olive green after approximately four weeks.
Solicoccozyma phenolicus (synonym Cryptococcus phenolicus) is a fungus species in the family Piskurozymaceae, typically found in its yeast state. [ 1 ] [ 2 ] References