Influence of Nitrogen Source on Growth of Streptococcus Bovis.

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Abstract
Of 37 organic nitrogeneous compounds tested, arginine was the most effective as a primary nitrogen source for 2 strains of Streptococcus bovis. Other compounds supporting growth were glutamine, citrulline, serine, histidine, and glucosamine. The majority of compounds tested, including most amino acids, failed to support growth. Another strain of S. bovis did not grow well on any one organic compound tested as a primary nitrogen source. Simple ammonium compounds, however, were extremely effective in serving as nitrogen source for all 3 strains.‡Growth in media containing ammonium salts was stimulated by acetate, and C14 labeled acetate was rapidly incorporated. No evidence was found for a mechanism involving degradation of arginine by resting cells or cell free extracts.