S. indica induced eATP release in different Arabidopsis transgenic lines. Culture medium was collected from mock treated or S. indica inoculated seedlings growing in liquid medium at 5 dpi and released eATP was measured. RLU: relative light units. Error bars represent ±SE of the mean from three biological replicates. Asterisks indicate significance to all other samples within the same treatment group (ANOVA, p<0.05). 