Affiliation:
1. Forsyth Dental Center, Boston, Massachusetts 02115
Abstract
Twenty-four strains of gram-positive facultative cocci, arranged primarily in small clusters, were isolated from the surface of the human tongue. With the exception of 14 catalase-negative isolates, these strains were identical in cultural and biochemical characteristics and in deoxyribonucleic acid base composition. All cultures produced viscous growth in both liquid and agar media. They fermented glucose anaerobically, reduced nitrate beyond nitrite, were benzidine-positive, and failed to grow in the presence of 5% NaCl or at 45 C. In addition, they exhibited guanine plus cytosine (G + C) contents of 55.4 to 58.3%. These isolates differed from strains of pediococci, aerococci, and micrococci which were included for comparison. On the basis of G + C content, these organisms appear to be intermediate between micrococci and staphylococci; however, on the basis of anaerobic glucose fermentation, it is suggested that they be placed in the genus
Staphylococcus
. It is proposed that they be recognized as
S. salivarius
.
Publisher
American Society for Microbiology
Subject
Molecular Biology,Microbiology
Reference36 articles.
1. ANDREWES M. D. AND M. H. GORDON. 1907. Report on the biological characters of staphylococci pathogenic for man. Rep. Med. Offr. Loc. Govt. Bd. (1905-1906) 7:543-560.
2. Deoxyribonucleic acid base composition of some members of the Micrococcaceae;AULF-TA A. E.;J. Bacteriol.,1966
3. A classification of micrococci and staphylococci based on physiological and biochemical tests;BAIRD-PARKER A. C.;J. Gen. Microbiol.,1963
4. The classification of staphylococci and micrococci from world wide sources;BAIRD-PARKER A. C.;J. Gen. Microbiol.,1965
5. BOHACEK J. M. KOCUR AND T. MARTINEC. 1965. Deoxyribonucleic acid base composition and taxonomy of the genus Micrococcus. PubI. Fac. Sci. Univ. Brno. K35:318-322.
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