Mutagenesis in Clostridiumacetobutylicum

Abstract

Methanesulfonic acid ethyl ester (EMS) is effective in inducing mutants resistant to ampicillin, erythromycin, and butanol (15 g/l). Optimal mutagenesis occurs at 85-90% kill corresponding to a 15 minute exposure to 1.0% (v/v) EMS at 35 C. At optimal conditions, the frequency of resistant mutant CFU/ total CFU plated increases 100-200 fold. © 1985 Science and Technology Letters.