SUMMARY: The sodium azide resistance of is not of the all-or-none unilocal type reported for but rather of the obligatory multi-step or penicillin variety. Independently isolated 1st-step resistant variants possessed similar degrees of resistance to sodium azide. Some properties of azide-resistant variants of are described. In support of the above finding it was possible to transduce 1st-step (and only 1st-step) resistance into the wild-tpye by phage grown on either 1st-, 2nd-, 3rd- or 4th-step resistant organisms. It was also possible to transduce 2nd-step resistance into 1st-step organisms by phage developed on independently isolated 1st step resistant organisms or by phage from multi-step resistant. About 60 % of transduced genes expressed their phenotype in platings done immediately after the adsorption period. It is concluded that a number of loci, not closely linked, and possibly equipotent, control sodium azide resistance in and that resistance could be dominant to the wild allele.


Article metrics loading...

Loading full text...

Full text loading...

This is a required field
Please enter a valid email address
Approval was a Success
Invalid data
An Error Occurred
Approval was partially successful, following selected items could not be processed due to error