Genetic studies on reference strains of mutans streptococci.
Twenty four reference strains (serotype a-h) belonging to the mutans group of streptococci were compared for DNA fragment patterns of rDNA after treatment with Hind III. It was shown that Streptococcus cricetus (serotype a), S. rattus (serotype b), and S. downei (serotype h) reveals comparatively homogeneous patterns while S. mutans (serotype c, e and f) exhibits differences between the different serotypes as well as within single serotypes. S. sobrinus had an intermediary diversity. These data support the previous findings that S. mutans is heterogeneous at the serological, biochemical and genetical level.
Ota
Fusao
F
Department of Food Microbiology, The University of Tokushima, 18-15, 3-chome, Kuramoto-cho, Tokushima 770-8503, Japan. ota@nutr.med.tokushima-u.ac.jp
Yamato
Masayuki
M
Hayashi
Mie
M
Ota
Masayuki
M
Koga
Tetsuro
T
Sherin
Ahmed
A
Mukai
Chiharu
C
Sakai
Kentaro
K
Yamamoto
Shigeru
S
D000818:Animals; D012150:Polymorphism, Restriction Fragment Length; D051381:Rats; D021521:Ribotyping; D012703:Serotyping; D013291:Streptococcus / Q000145:classification / Q000235:genetics; D013295:Streptococcus mutans / Q000145:classification / Q000235:genetics*