Figure 6. Effect of chlorogenic acid on pathogen growth.

Pathogen growth was determined in culture medium enriched with chlorogenic acid to 0, 200 and 350 µg.ml⁻¹ . Concentrations of Pectobacterium atrosepticum in liquid culture were determined after 40 h of contact (A). Radial mycelium growth of Phytophthora infestans from mycelia disks on solid culture medium was measured after 7 days (B). Bars represent the means ± standard error of results from two replicate experiments. Different letters above bars indicate significant differences between treatments (Tukey's test, p<0.05).