Figure 2.

Preventive efficacy of selected Trichogin GA IV-derived peptides against Botrytis cinerea infection on Solanum lycopersicum cv. Micro-Tom leaves. Treatments were performed by spraying the lower (abaxial) surface with 50 μM peptide solution in water. The pathogen was inoculated 48 h later by drop inoculation with a conidial suspension of B. cinerea. Conidia were applied on the abaxial (peptide-treated; A) or adaxial (untreated; B) leaf surface. Lesion diameters were measured 3 days after infection. Control leaves were treated with water. Values from nine biological replicates are reported as Tukey boxplots. Data were analyzed by one-way ANOVA with Tukey–Kramer post-test (p < 0.05). Statistically significant differences are shown by different letters. The experiment in (A) was repeated with similar results.