Abstract Induced mutations are important for genetic research and breeding. Mutations induced by physical or chemical mutagenesis usually heterozygous during the early generations. However, must be fixed prior to phenotyping field trials, which requires additional rounds of self-pollination. Microspore culture is an effective method produce double-haploid (DH) plants that homozygotes. In this s...

introduction: active packaging is one of the innovations in food packaging industry that would be a respons to the changing needs of consumers and markets. in this technique, materials such as adsorbents oxygen, moisture, carbon dioxide, ethylene and carbon dioxide-releasing flavor compounds, antimicrobials, antioxidants and various aromatic compounds are used. in the last decade, great attenti...

clavulanic acid is produced industrially by fermentation of streptomyces clavuligerus and researches have increased its production by strain improvement, recombinant dna technology, and media composition and growth condition optimization. the main objective of this study was to increase the level of clavulanic acid production from streptomyces clavuligerus (dsm 738), using uv irradiation. after...

objective(s):[p1]  this study highlights xylanase overproduction from bacillus mojavensis via uv mutagenesis and optimization of the production process. materials and methods:bacillus mojavenis ptcc 1723 underwent uv radiation. mutants’ primary screening was based on the enhanced hollow zone diameter/ colony diameter ration (h/c ratios) of the colonies in comparison with the wild strain on xyla...

Site-directed mutagenesis is a powerful tool that has enabled molecular biologists to perform functional analysis of altered nucleic acids and proteins. Newer PCR-based mutagenesis techniques have reduced the process of mutagenesis to as little as one day. While each technique has its advantages, both require a strategy to isolate the desired clone from a population that contains mutagenized an...