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Gene expression of (A)PR1 and (B)LOX2 genes in B. nigra plants exhibiting a HR-like necrosis (HR+) or not (HR-) infested by P. brassicae eggs (4 and 24 h after oviposition) or in plants treated with BC (1 ng). Bars represent mean expression levels normalized (relative to the reference gene GAPDH) as 2-ΔΔCt with standard error bars (n = 3–4 biological replicates). Asterisk indicates significant difference (ANOVA P < 0.05; Dunnett post hoc test).
