Figure 2.

Percentage of planktonic growth (a) after 3 and 6 dpi (days post inoculation) and biofilm formation (b) after 6 dpi of Xylella fastidiosa subsp. fastidiosa (Xff) strain Temecula1 (NCPPB 4605) grown in PD2 broth added with four formulations (G, PE1, PE2, PE3) at different concentrations (1:10, 1:100) and PD2 without substances (Ctr). Values are means ± SD of three independent biological replicates, normalized with absorbance obtained by blank values (non-inoculation), of the most representative experiment of two independent experiments. (statistically significant difference obtained between control and the concentrations of the different formulations, according to one-way ANOVA analysis, Dunnett’s multiple comparisons test: **** p < 0.0001, ** p < 0.01).