Figure 1: Expression of tomato SlSWEET genes in the cotyledon at the early stage of B. cinerea infection. Expression of each SlSWEET gene was measured by qRT-PCR 0 h and 16 h post inoculation. Transcript levels were normalized to the SlSAND gene. Values represent the mean and standard error of triplicate results. ND means ‘not detected’. Asterisks indicate values that are statistically significantly different from the 0 h control using ANOVA (P<0.05).