Fig. 4: The dissected biosynthetic pathway of furochromones and their de novo biosynthesis in N. benthamiana leaves.

a Genomic location of biosynthetic genes in S. divaricata. Catalytic functions of biosynthetic genes responsible for formation (b) and post-modification (c) of the furochromone skeleton. Extracted ion chromatograms (EICs) of biosynthetic products in LC/MS analysis are shown. STD, reference standards. EV, agrobacterium-mediated transient expression using a vector without any biosynthetic genes.