Pneumocystis

Pneumocystis
	Pneumocystis jirovecii
Systematics
Department :	Ascomycota mushrooms
Subdivision :	Taphrinomycotina
Class :	Pneumocystidomycetes
Order :	Pneumocystidales
Family :	Pneumocystidaceae
Genre :	Pneumocystis
Scientific name of the class
	Pneumocystidomycetes
	OE Erikss. & Winka
Scientific name of the order
	Pneumocystidales
	OE Erikss.
Scientific name of the family
	Pneumocystidaceae
	OE Erikss.
Scientific name of the genus
	Pneumocystis
	P. Delanoë & Delanoë

Pneumocystis is a systematically quite isolated genus of the hose fungus , which alone forms the class Pneumocystidomycetes . The species live as extracellular parasites in the lungs of mammals .

features

Pneumocystis does not form a mycelium or an asocarp . The vegetative cells are thin-walled, irregular in shape and multiply through simple cell division.

Sexual reproduction is initiated by the fusion of two vegetative cells. This is followed by karyogamy and the formation of a cyst wall. Through meiosis and mitosis in some species arise four or eight ascospores by the cyst ( ascus be limited). The cyst wall pops up and releases the ascospores.

Systematics

The genus forms its own class within the Taphrinomycotina .

There are at least five types:

Individual evidence

^ Index Fungorum , accessed December 18, 2007.

literature

Sina M. Adl et al .: The New Higher Level Classification of Eukaryotes with Emphasis on the Taxonomy of Protists. In: The Journal of Eukaryotic Microbiology. 52 (5), 2005; Pp. 399-451. doi : 10.1111 / j.1550-7408.2005.00053.x

Web links

Commons : Pneumocystis - collection of images, videos and audio files

[1] Index Fungorum , accessed December 18, 2007.