Production of protoplasts is an important tool for genetic transformation of fungi. A protocol for protoplasts production in Aspergillus ochraceus was developed, evaluating culture aging of mycelium, different commercial enzymes and osmotic stabilizers. The best results were obtained with NH4Cl 0.8mol L-1 as osmotic stabilizer, mycelial age of 24 hours and Lysing Enzymes (20mg mL-1) plus Meicelase (20mg mL-1) as lytic enzymes. Good results were also obtained with Lysing Enzymes alone.
Aspergillus ochraceus; protoplasts and osmotic stabilizer
