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 with, vitamin B1 (Peters et al., 1928). Lutz (1948a) showed that the thiamin requirement of Mycobacterium agreste (N. corallina, Breed et al., 1948) could be replaced by 2methyl-4-amino-5 aminomethyl pyrimidine. This communication deals with the growth factor requirements of N. corallina (strain S) isolated by Batt and Woods (1951).