CYTOGENETIC STUDY OF NOCARDIA CORALLINA ,

Cytogenetic study of Nocardia corallina.

Cytogenetics has proved to be a valuable aid in the study of higher organisms but has received only limited attention in microbiology. Witkin (1951), Ryan et al. (1954) and Ryan and Wainwright (1954) have successfully applied cytogenetic approaches to the study of bacteria. Haploid and diploid cultures of Escherichia coli strain K-12 were studied cytologically by Lederberg et al. (1951) in an e...

Pigment of Nocardia corallina.

Fat bodies in Nocardia corallina.

* Calculated from the zero-time viable spore concentration taken as 0 per cent germination. The data shown in table 1 indicate that the phenol-inactivation method and the dilution heat-shock method were superior to the conventional heat-shock method usually employed in germination studies if germination rates are desired. This was especially true for short incubation times when the germination ...

Studies on the nutrition of Nocardia corallina.

The nutritional requirements of Streptothrix corallinus (Nocardia corallina, Breed et al., 1948) were studied by Reader (1928) who showed that growth in a medium containing glucose, ammonium sulfate and inorganic salts was stimulated by the addition of small amounts of tryptic meat broth or yeast extracts. The active principle in these additions was thought to be related to, but not identical w...

Oxidation of propionic acid by Nocardia corallina.

Two pathways have been postulated for the conversion of propionic acid to pyruvic acid by liver mitochondria. Mahler and Huennekens (1953) suggested that propionic acid was oxidized to acrylic acid which was converted to pyruvic acid through Land D-lactic acids. The alternative pathway involves a direct carboxylation of propionic acid to succinic acid (Lardy and Adler, 1956; Flavin et al., 1955...