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| Nature 178, 92 (14 July 1956); doi:10.1038/178092a0 |
|
Artificial Elimination of the F Factor in Bact. coli K-12
Y. HIROTA
Genetical Laboratory, Osaka University, Osaka.
A FEW years ago, Lederberg and his co-workers1,2 found that in Bact. coli K-12 there was a difference in sex-compatibility between the two mating cells, one having a transmissible agent, F, and the other lacking this agent. Hayes3 demonstrated that these mating types were very stable heritable characters; but the accidental disappearance of the F factor was found by Lederberg et al. 1, and by Hayes4. The study reported here reveals that it is possible to obtain F - cells at will from F + cells under certain environmental conditions. This phenomenon may be called 'F elimination'. The environmental factor responsible for F elimination is the cobalt or nickel concentration in the medium (Co(NO3)2, CoCl2, etc.; Ni(NO3)2, NiSO4, etc.).
- Lederberg, J. , Cavalli, L. L. , and Lederberg, E. M. , Genetics, 37, 720 (1952). | ISI |
- Cavalli, L. L. , Lederberg, J. , and Lederberg, E. M. , J. Gen. Microbiol., 8, 89 (1953). | PubMed | ISI | ChemPort |
- Hayes, W. , Cold Spring Harbor Symp. Quant. Biol., 18, 75 (1953). | PubMed | ISI | ChemPort |
- Hayes, W. , J. Gen. Microbiol., 8, 72 (1953). | PubMed | ISI | ChemPort |
- Hayes, W. , Nature, 169, 118 (1952). | PubMed | ISI | ChemPort |
- Hayes, W. , Nature, 169, 1017 (1952). | Article | PubMed | ISI | ChemPort |
© 1956 Nature Publishing Group
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