[Insertion mutagenesis in Bacillus subtilis (Marmur)].

A method for obtaining mutations in Bacillus subtilis using integration into the chromosome of the plasmid pHV60 ligated to chromosomal DNA fragments was developed. Auxotrophic mutants acquire, in addition, chloramphenicol-resistance, due to insertion of appropriate plasmid determinants. Chromosomal localization was established and the properties of several mutants were studied.