Figure 8. Effect of NAC on severity and bacterial population in plants treated with NAC adsorbed in fertilizer.

The severity of disease was evaluated using a diagrammatic scale where 1 and 6 correspond to 3% and 56% of chlorotic areas in a leaf, respectively (A). The X. fastidiosa population was estimated by real-time PCR analysis (B). The results are represented using a log scale and refer to the percentage of the final population in relation to the beginning, where 2 equals 100% of the population before the treatments for each plant. The vertical bars represent the standard error of the mean. * indicates a significant difference compared with the control (P < 0.05). The values correspond to the mean of 5 plants.