Russet mite-induced SA inhibits growth of Pst DC3000 on tomato. Pst population growth, quantified as the number of colony forming units (CFU/cm2; + SE), in wild-type (WT) (cv. MM) and nahG plants that were either without RM (Pst) or had been pre-infested with RM (Pst + RM) for seven days. In total, seven plants were used per genotype and per treatment. The asterisks indicate a statistically significant difference (Student’s t-test; P <0.001). RM, russet mites; SA, salicylic acid; SE, standard error.