13-LOX gene expression in different 13-lox mutant backgrounds. LOX2 expression analysed in WT, in lox6A and in lox3B lox4A double mutants. LOX3 and LOX4 expression was analyzed in WT, lox2-1, and lox6A single mutants, and the lox2-1 lox6A double mutant. LOX6 expression was analyzed in lox2-1 and the lox3B lox4A double mutant. Leaves 8 (wounded) and 13 (distal) were snap-frozen before (unfilled bars) and 1 h after the wounding (filled bars). Data are from three (controls) and three to four (wounded) biological replicates (±SD). Letters (a, b, and c) refer to significant differences (ANOVA and t-test; p < 0.05).