Based on the preparation of Bacillus licheniformis JF-20, we studied all factors effecting on formation and regeneration of protoplasts. Under the optimum conditions, the rates of formation and regeneration of protoplasts of strain JF-20 had reached to 86.9% and 38.4% respectively. The related phenomenon of formation and regeneration of protoplasts were observed by optical microscope.
Under the optimal conditions of protoplasts formation and regeneration, the protoplasts from the original strain ...