The biochemistry of homoterpenes - Common constituents of floral and herbivore-induced plant volatile bouquets

► Homoterpenes are common floral and insect-induced volatiles in angiosperms. ► The biosynthetic pathway of the homoterpenes DMNT and TMTT has been elucidated. ► The P450 CYP82G1 from Arabidopsis thaliana was identified as a DMNT/TMTT synthase. ► Engineering the formation of homoterpenes may decipher their role in plant defense.