ASPOROGENY IN BACILLUS SUBTILIS ASSOCIATED WITH DEVELOPMENT OF RESISTANCE TO ACTINOMYCIN D

Abstract

Eight actinomycin-D resistant isolates of B subtilis 6051 selected by the gradient-plate technique were unable to sporulate in several media capable of supporting spore formation of the parent-sensitive strain. Some degree of specificity existed since sulfanilamide and amethopterin-resistant strains of B subtilis 6051 were able to form spores.