Fig. 1From: Diversity in mitotic DNA repair efficiencies between commercial inbred maize lines and native Central American purple landracesRecovery from DNA damage in US maize inbred lines (B73 and Mo17) and purple Central American landraces (Orotina Congo [C], Jocopilas [J], P1-Pujagua Santa Cruz, P2-Pujagua La Cruz, Talamanca [T]) as observed by comet assay. The comet assay is a gel electrophoresis-based method that can be used to measure DNA damage in individual cells. If negatively charged DNA contains breaks, those broken ends migrate toward the anode and form a tail; thus, the amount of DNA in the tail is related to the severity of damage. In this study, seedlings were treated with zeocin (100 μg−mL) for 24 h. DNA damage was compared to an untreated control. 1 h refers to samples collected after being washed and allowed to recover for 1 h in water (n = 3, 3 biological samples, 3 technical replicates and 50 nuclei per replicate)Back to article page