Oxidative stress provokes distinct transcriptional responses in the stress-tolerant atr7 and stress-sensitive loh2 Arabidopsis thaliana mutants as revealed by multi-parallel quantitative real-time PCR analysis of ROS marker and antioxidant genes

► Arabidopsis atr7 mutant is tolerant to oxidative stress, unlike its loh2 background. ► Platforms for qRT-PCR analysis of 217 antioxidant and 180 ROS marker genes employed. ► Stress-related transcription factors and antioxidant genes expressed better in atr7 under unstressed conditions.