The use of karyotyping in the systematics of yeasts

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Abstract
The use of electrophoretic karyotyping in systematics of yeasts is discussed. New data are provided on the karyotypes of the medically important fungiHortaea werneckii, Filobasidiella (=Cryptococcus)neoformans, andMalassezia species.Hortaea werneckii has twelve to eighteen bands of chromosomal DNA, ranging in size between 500 and 2300 kb. The karyotypes ofFilobasidiella neoformans consist of seven to fourteen bands of chromosomal DNA. The varietiesneoformans andbacillispora cannot be separated by their karyotypes, and no obvious correlation was found with serotypes, geography or habitat. All strains ofMalassezia pachydermatis studied have similar karyotypes consisting of five bands, whereas inM. furfur, four different karyotypes are prevalent. However, each of these karyotypes is stable.