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Genetic characterization of forty ionizing radiation-sensitive strains of Deinococcus radiodurans: linkage information from transformation

1995; American Society for Microbiology; Volume: 177; Issue: 18 Linguagem: Inglês

10.1128/jb.177.18.5232-5237.1995

1098-5530

V Mattimore, K S Udupa, G A Berne, John R. Battista,

Plant Genetic and Mutation Studies

Natural transformation was used to help define a collection of ionizing radiation-sensitive strains of Deinococcus radiodurans. Three putative rec mutations were identified, as were three pol alleles. Forty of the ionizing radiation-sensitive strains were placed into 16 linkage groups, and evidence obtained indicates that each linkage group consists of a cluster of mutations not more than 1,000 bp apart. In addition, a new class of D. radiodurans mutant was described that, although radioresistant, appears to recover from ionizing radiation-induced DNA damage slowly relative to other strains of D. radiodurans.