ISSN:
1432-072X
Keywords:
Selection of Slime-Free Mutant
;
Coryneform Hydrogen Bacterium
;
Capsular Material
;
Bacterial Polysaccharide
;
Chemostat Selection
;
Selective Advantage
Source:
Springer Online Journal Archives 1860-2000
Topics:
Biology
Notes:
Abstract A slime-free mutant was isolated from Corynebacterium autotrophicum strain 7 C. The mutant appeared in a substrate (fructose) limited chemostat culture. No significant differences between wildtype and mutant were detected with respect to pigmentation, to growth rate, and respiratory rate at varying substrate (fructose) concentrations. During growth in chemostat culture the wildtype/mutant ratio present in the inoculum was maintained for weeks. The results do not explain the selection of the mutant in the substrate limited chemostat culture. The slime is a polysaccharide containing glucose, mannose and galactose; the uronic acid present was not identified. Copious amounts are produced from fructose, less from lactate or during autotrophic growth. The slime is not reutilized.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00446328
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