Heat map representations of the gene expression data collected from roots (A) and leaves (B) of four Arabidopsis thaliana genotypes (wild-type, cad2-1, vtc1-1 and cad2-1 vtc1-1) exposed to 5 μM CdSO4 for 72 h in hydroponics (n = 4). Hierarchical clustering of genes is shown on the top and bottom; genotype clustering is visualized on the left and right. Green shaded boxes indicate high, and red shaded boxes low gene expression. Genes: γ-glutamylcysteine synthetase (GSH1), glutathione synthetase (GSH2), phytochelatin synthase (PCS1), iron superoxide dismutase (FSD1), copper/zinc superoxide dismutase (CSD1-2), primary microRNA398 transcripts (pri-MIR398a-c), catalase (CAT1-3), ascorbate peroxidase (APX1-2), dehydroascorbate reductase (DHAR1-3), glutathione reductase (GR1-2), Toll-Interleukin-1 class (TIR), upregulated by oxidative stress (UPOX).
