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This study aimed to improve the production of alkaline protease by Baciflus strains through protoplast fusion technique. Different Bacillus strains were screened for alkaline protease production. The best producers were B. alvei and B. licheniformis (local isolates) were fused together. Twelve fusants were selected on the basis of antibiotic resistance pattern. All fusants were characterized on the basis of enzyme activity, resistance to antibiotics and different chemical and physical factors. Plasmid profiles studies of these fusants and their parents showed the transfer of some plasmids from each parent to the fusants. All fusants showed higher efficiencies in enzyme productivity than their parents. Up to five limes alkaline protease activity were found in fusants comparing with their parental strains production. The distinguished obtained fusants are available to be used commercially in many economic important industries.
DOI
10.21608/jpp.2004.238800
Keywords
Bacillus spp, genetic improvement, protoplast fusion, Alkaline protease
Authors
Affiliation
Microbial Genetics Dept., National Research Center, Cairo, Egypt
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Microbial Chemistry Dept., National Research Center, Cairo, Egypt
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https://jpp.journals.ekb.eg/article_238800.html
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https://jpp.journals.ekb.eg/service?article_code=238800
Publication Title
Journal of Plant Production
Publication Link
https://jpp.journals.ekb.eg/
MainTitle
GENETIC IMPROVEMENT OF ALKALINE PROTEASE PRODUCTION VIA BACILLUS PROTOPLAST FUSION