Fig. 7

Piericidin A1 has the potential to prevent rice bacterial blight. a Xoo growth inhibitory zone with 0.0001–1 g/L Piericidin A1 standard on an NA plate. b OD600 of Xoo NA culture in the presence of 0.0001–1 g/L Piericidin A1; the EC50 of Piericidin A1 to inhibit Xoo growth was identified as 0.006363 g/L. c Xoo-infected rice leaves in the absence and presence of 100 mg/L Piericidin A1 (Pie A1). d Lesion length of Xoo-infected rice in the absence and presence of 100 mg/L Piericidin A1 (Pie A1), alongside a control leaf treated with stile water only (water). Shown are the averages for 15 rice leaf lesions with standard deviations. Statistically significant differences are indicated by one asterisk (P ≤ 0.05)