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Transduction of inositol-fermenting ability demonstrating phylogenetic relationships among strains of Salmonella typhimurium

Published online by Cambridge University Press:  14 April 2009

D. C. Old ,
P. F. H. Dawes  and
Ruth M. Barker
D. C. Old
Affiliation:
Bacteriology Department, University of Dundee Medical School, Ninewells Hospital, Dundee DD1 9SY, Scotland
P. F. H. Dawes
Affiliation:
Bacteriology Department, University of Dundee Medical School, Ninewells Hospital, Dundee DD1 9SY, Scotland
Ruth M. Barker
Affiliation:
Bacteriology Department, University of Dundee Medical School, Ninewells Hospital, Dundee DD1 9SY, Scotland

Summary

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The production of Inl+ recombinants was readily demonstrated in transductional crosses from Inl+ donor strains to Inl− recipient strains from different biotypes and biogroups. None of numerous crosses between different pairs of strains from biotypes 25 and 26 and the biogroup FIRN (biotypes 29, 30, 31 and 32) gave Inl+ recombinants suggesting that the inl mutation was present at the same intragenic site in all of these strains. Strains of the FIRN biogroup (Fim−Inl−Rha−Bxyl−) are thought to have descended by successive rha and fim mutations from an ancestral bacterium of biotype 25 (Fim+Inl−Rha+Bxyl−). The sites of the inl mutations in other Inl− biotypes (9, 10, 27 and 25hi) were independent and each was different from that in strains from biotypes 25, 26 and FIRN.

Type
Research Article
Information
Genetics Research , Volume 35 , Issue 2 , April 1980 , pp. 215 - 224
Copyright
Copyright © Cambridge University Press 1980

References

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