Abstract
The discriminatory powers of random amplified polymorphic DNA (RAPD) analysis and restriction fragment length polymorphism (RFLP) were assessed for the detection and comparison of DNA modifications caused by an oxidative stress. DNA extracted from peracetic acid (PAA)-treated Escherichia coli H10407 was randomly amplified with the 10-mer primer OPZ14, which generated one stress-induced fragment. RFLP and RAPD profiles were hybridized by Southern blotting with the digoxigenin-labelled RAPD product. Untreated and PAA-treated cells had difference band profiles. The results indicate that RAPD analysis could be used as a discriminatory tool for investigating genetic rearrangements in E. coli caused by oxidative stress and that RFLP analysis could be used to confirm the rearrangements.
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