Regulation of genes involved in the JA biosythesis pathway. The colour code in squares indicates gene expression changes in aos and fou2 mutants in comparison to wt and changes in B. brassicae infested wt, aos and fou2 versus aphid free control plants of the corresponding genotype. A diagonal line inside a square indicates that gene regulation was not statistically significant. Two crossing diagonal lines indicate that the AOS gene is knockout in the aos mutant. The colour scale represents log2 transformed gene expression ratios. Abbreviations: aos, gene expression profiles of aos mutant in comparison to wt; fou2, gene expression profiles of fou2 mutant in comparison to wt; [wt, aos, fou2] + aphids, aphid-mediated changes in gene expression profiles in wt, aos and fou2, respectively. LOX2, LIPOXYGENASE 2; AOS, ALLENE OXIDE SYNTHASE; AOC, ALLENE OXIDE CYCLASE; OPDA, (9S,13S)-12-oxo-cis-10,15-phytodienoic acid; OPR3, OPDA REDUCTASE3; OPC-8:0, 3-oxo-2-(cis-2'-pentenyl)-cyclopentane-1-octanoic acid (OPC-8:0); OPCL1, OPC-8:0 CoA LIGASE; ACX, OPC-8:0 CoA OXIDASE; MYC2, JASMONATE INSENSITIVE1 transcription factor; JAZ, JASMONATE-ZIM-DOMAIN PROTEIN; SCFCOI1, SCF ubiquitin E3 ligase-CORONATINE INSENSITIVE1 (COI1) complex.