Single, chemically defined sporulation medium for Bacillus subtilis: growth, sporulation, and extracellular protease production

Author:

Hageman J H,Shankweiler G W,Wall P R,Franich K,McCowan G W,Cauble S M,Grajeda J,Quinones C

Abstract

The composition and application of a single, chemically defined medium or growth and sporulation of Bacillus subtilis is described. At 37 degrees C cells grew with a doubling time of about 40 min; cultures attained near-maximal spore formation (70 to 80% by 12 h after the end of exponential growth and produced 1 X 10(9) to 2 X 10(9) heat-resistant free spores at 24 h. Dipicolinic acid production was completed between 7 and 11 h. Cells grown in the single, chemically defined medium excreted levels of serine and neutral proteases comparable to those excreted in nutrient broth medium.

Publisher

American Society for Microbiology

Subject

Molecular Biology,Microbiology

Reference18 articles.

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2. Nutritional regulation of degradation of aspartate transcarbamylase and of bulk protein in exponentially growing Bacillus subtilis cells;Bond R. W.;J. Bacteriol.,1983

3. Biosynthesis of dipicolinic acid in Bacillus subtilis;Chasin L. A.;Biochem. Biophys. Res. Commun.,1967

4. Biochemical studies of bacterial sporulation and germination. VIII. Patterns of enzyme development during growth and sporulation of Bacillus subtilis;Deutscher M. P.;J. Biol. Chem.,1968

5. Differential amino acid requirements for sporulation in Bacillus subtilis;Doering J. L.;J. Bacteriol.,1972

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