Intraspecific protoplast fusion of amylase-producing strains of Candida fennica.

The production of α-amylase was increased by protoplast fusion of auxotrophic mutants of Candida fennica FTPT-8903. One prototrophic fusant was 90% and 32% more efficient in producing α-amylase in semi-solid and liquid fermentation, respectively, than the parental strains. Protoplast fusion did not significantly stimulate the synthesis of glucoamylase in the fusants.