Further, we identified 33 putative glutathione S-transferases (GSTs), belonging to the glutathione metabolism (p = 1.4x10-5) enriched GO term, which were up-regulated in either the shared AC Emerson and AC Morley gene set, or the AC Emerson-specific gene set prior to infection (Figure 2D), suggesting priming of redox homeostasis in both resistant cultivars, with GST antioxidant activity playing an important role in AC Emerson. This evidence concerns the gene HPGDS and infection.