Differential recovery of auxotrophs after penicillin enrichment in Escherichia coli.
نویسندگان
چکیده
Various auxotrophs are recovered from a penicillin enrichment cycle with differing efficiencies. Reconstruction experiments indicate that, under starvation conditions in the presence of penicillin, most auxotrophs undergo some death, whereas prolineless mutants are virtually immune to penicillin-induced killing.
منابع مشابه
Isolation and characterization of pyridoxine auxotrophs of Escherichia coli.
Dempsey, Walter B. (University of Florida, Gainesville), and P. F. Pachler. Isolation and characterization of pyridoxine auxotrophs of Escherichia coli. J. Bacteriol. 91:642-645. 1966.-Pyridoxine auxotrophs of Escherichia coli B have been consistently produced by a modified penicillin enrichment method. This modified penicillin technique included a 6-hr growth period in the absence of any pyrid...
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عنوان ژورنال:
- Journal of bacteriology
دوره 106 2 شماره
صفحات -
تاریخ انتشار 1971