%0 Journal Article %A Farquhar, R. %A Yudkin, M. D. %T Phenotypic and Genetic Characterization of Mutations in the spoIVC Locus of Bacillus subtilis %D 1988 %J Microbiology, %V 134 %N 1 %P 9-17 %@ 1465-2080 %R https://doi.org/10.1099/00221287-134-1-9 %I Microbiology Society, %X The spoIVC locus of Bacillus subtilis was analysed. Fourteen spoIVC mutants isolated following nitrosoguanidine mutagenesis were used along with two previously characterized spoIVC mutants to construct a fine structure genetic map of the locus. The recombination index (RI) measured between extreme mutations was 0·26; no recombination could be detected between four of the mutations. Complementation analysis showed that all the mutations fall into two cistrons. The RI between extreme mutations in cistron A was about 0·17 and that between extreme mutations in cistron B was about 0·05. In respect of biochemical markers, the spoIVC mutations all produced similar phenotypes, irrespective of their location. However, in both cistrons oligosporogenous and asporogenous mutations mapped close together. %U https://www.microbiologyresearch.org/content/journal/micro/10.1099/00221287-134-1-9