Assessment of DNA strand breaks induced by bleomycin in barley by the comet assay.
Comet assay was applied to study induction and repair of DNA damage produced by bleomycin in barley genome. Experimental conditions were adapted to achieve efficient detection of both DNA single- and double-strand breaks. Substantial increase of the parameter "% of DNA in tail" was observed coupled with almost linear dependence from bleomycin concentration, more pronounced for the induction of DNA double-strand breaks. Data obtained at different recovery periods displayed rapid restoration of breakage, revealing that efficient mechanisms for repair of strand discontinuities induced by bleomycin are functional in barley DNA loop domains.
Georgieva
Mariyana
M
Department of Molecular Genetics, Institute of Genetics Acad. D. Kostoff, Bulgarian Academy of Sciences, Sofia, Bulgaria.
Stoilov
Lubomir
L
D001761:Bleomycin / Q000633:toxicity*; D020552:Comet Assay; D053903:DNA Breaks, Double-Stranded; D053904:DNA Breaks, Single-Stranded; D004260:DNA Repair; D001467:Hordeum / Q000187:drug effects* / Q000235:genetics; D018517:Plant Roots / Q000187:drug effects / Q000235:genetics
D001761:Bleomycin