Salmonella enteritidisのムダビール型変異 (村瀬) 菌に於ける所謂粘液型変異とそれの形質伝達性

抄録

Mucoid type variant generated from the Mutabile type variant of Salmonella enteritidis by mutation. Its characteristics were found to be as follows :
1. When the Mutabile-type variant (Mut) was cultured on Endo's or galactose-Endo's plate over night and lett standing in a room temperature for 2-3 days, daughter-like growth of mucoid Mut colony was recognized.
2. M-N (Kauffmann) variation was recognized on the mucoid Mut.
3. Mucoid Mut has a lesser degree of changes in the bacterial body than ordinary Mut and its galactose sensitivity was 6.3γ/0.01 ml being relatively resistant in contrast to that of 1.67 for the starting Mut and reversed Mut.
4. The variation from mucoid Mut to non-mucoid Mut (Murase) was recognized.
5. The variation from mucoid Mut to mucoid RT (Fukutome et al) was recognized.
6. The variation from mucoid RT to non-mucoid RT and to non-mucoid Mut was recognized.
7. The variation from mucoid RT to mucoid Mut was recognized.
8. The mucoid character of mucoid Mut was dependent on the presence of galactose or galactose factor in the culture medium, but mucoid RT formed mucoid colonies even on plain agar plates.
It can be said, on genetic point of view, that the mucoid character acquired in Mut generation (whether or not it is due to the spontaneous mutation is dependent on the fact that whether or nott the same mutation does take place in the original strain or RT) was transmitted to the following., RT generation and further to the Mut generation.