Fig. 4 in Formation and exudation of biphenyl and dibenzofuran phytoalexins by roots of the apple rootstock M26 grown in apple replant disease soil

Fig. 4. Established pathway of aucuparin biosynthesis and proposed pathway of dibenzofuran biosynthesis. Enzymes previously characterized are indicated in blue and enzymes not yet detected are marked in red. Solid and broken arrows represent experimentally proved and proposed reactions, respectively. BIS, biphenyl synthase; B4H, biphenyl-4-hydroxylase; OMT, O-methyltransferase; CYP_H, cytochrome P450 hydroxylase; CYP_C, cytochrome p450 cyclase.