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Production and regeneration of protoplasts from the Y-phase of the human pathogenic fungus Paracoccidioides brasiliensis.

Authors
Type
Published Article
Journal
Journal of medical and veterinary mycology : bi-monthly publication of the International Society for Human and Animal Mycology
Publication Date
Volume
32
Issue
5
Pages
381–388
Identifiers
PMID: 7844703
Source
Medline

Abstract

Protoplasts of Y-cells and partially converted M-cells from several human isolates of Paracoccidioides brasiliensis were obtained with a combined enzyme system containing Novozym 234 and a chitinase. A laboratory made extract from Trichoderma harzianum CBS-345-33 supplemented with chitinase induced the release of protoplasts from partially converted M-cells but not from established Y-cells. A similar yield of protoplasts (1-2 x 10(5) ml-1 after 16 h) was produced by using either enzymatic system. Protoplasts regenerated on nutrient gelatin at 23 degrees C at a frequency of 0.1%.

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