Fig. 4: Expression levels of genes related to carotenoid biosynthesis and degradation.

The leaves and bolting stems of mutants and WT plants were sampled 6 weeks after transplanting. The main axis represents the amount of gene expression in the leaves, and the secondary axis represents the amount of gene expression in the bolting stems. WT wild-type plant, M1 biallelic mutant, M3, M6, M16 homozygous mutants. GGPP geranylgeranyl diphosphate, PSY phytoene synthase, PDS phytoene desaturase, ZDS ζ-carotene desaturase, Z-ISO ζ-carotene isomerase, CRTISO carotenoid isomerase, LCYe lycopene ε-cyclase, LCYb lycopene β-cyclase, ε-OHase ε-carotene hydroxylase, β-OHase β-carotene hydroxylase, VDE violaxanthin de-epoxidase, ZEP zeaxanthin epoxidase, NXS neoxanthin synthase, CCD carotenoid cleavage dioxygenase