Fruit-Enhanced Resistance to Microbial Infection Induced by Selective Laser Excitation

Figure 4

Schematic pathway for transresveratrol biosynthesis. Adapted from [17, 18]. The enzymes involved in the transresveratrol biosynthesis are phenylalanine ammonia lyase (PAL), cinnamate-4-hydroxylase (CH4)—which can be substituted by the enzyme tyrosine ammonia lyase (TAL)—, 4coumarate-CoA ligase (4CL), and stilbene synthase (STS). STS and chalcone synthase (CHS) bond the same substrate and produce transresveratrol through a C₂–C₇ aldol condensation or chalcone through a C₁–C₆ claisen condensation, respectively.