As indicated before, in the absence of pathogen infection, Bs PTA-271 only induced a weak expression of PR2 and PR1 (2.8-fold increase) but was not significant according to ANOVA analysis (Figure 4 and Supplementary Figure 1A), suggesting that Bs PTA-271 may act as a priming stimulus in Chardonnay. The gene discussed is TMEM37; the disease is infection.