Electrophoretic karyotype of environmental isolates of Paracoccidioides brasiliensis.
Five of the 12 environmental isolates of the dimorphic fungus Paracoccidioides brasiliensis known to date, were analysed by contour-clamped homogeneous electric field gel electrophoresis (CHEF). The electrophoretic pattern was shown to consist of five bands, with molecular size ranging from 3.2 to 10 Mb, a model quite similar to the one found in the clinical isolates previously tested and used here as controls. However, one of the bands in the environmental isolates had a lesser weight (7.2 Mb), than the one corresponding to the clinical counterparts (8.8 Mb). This resulted in a smaller genome, approximately 29.7 Mb. The small differences that were found indicate the presence of chromosome polymorphism in this fungus.
Corporación para investigaciones Biológicas (CIB), Medelín, Colombia.
A E
AE
Montoya
A L
AL
Alvarez
M N
MN
Moreno
A
A
Restrepo
J G
JG
McEwen
D000818:Animals; D016521:Electrophoresis, Gel, Pulsed-Field / Q000379:methods; D016681:Genome, Fungal; D007621:Karyotyping; D010228:Paracoccidioides / Q000145:classification* / Q000235:genetics / Q000302:isolation & purification