Fig. 3

Summary of some known transcription factors, post-translational regulators, and epigenetic regulators that regulate the expression of carotenogenic pathway genes or PSY protein. Their direct actions on pathway genes or PSY protein in different organs such as leaf, carotenoid-rich fruit, and flower are indicated. Those transcription factors are clustered by the family of transcription factors. MYB, Myeloblastosis family of transcription factors; RCP1, REDUCED CAROTENOID PIGMENTATION1; WP1, WHITE PETAL1; NAC, NAM, ATAF, and CUC transcription factors; WRKY, WRKYGQK motif-containing transcription factors; PHL3, PHOSPHATE STARVATION RESPONSE FACTOR LIKE3; SBP1, SQUAMOSA PROMOTER BINDING PROTEIN1; HY5, ELONGATED HYPOCOTYL5; BBX, B-box transcription factors; RAP2.2, APETALA2/ethylene response factor-type transcription factor 2.2; PIF, PHYTOCHROME-INTERACTING FACTORS; bHLH, basic Helix-Loop-Helix transcription factors; NOR, NON-RIPENING transcription factor; MADS, MADS-box containing transcription factors; RIN, RIPENING INHIBITOR; OR, ORANGE protein; Clp, Clp protease; SGR, STAY GREEN; PPSR1, Plastid Protein Sensing RING E3 ligase 1; JMJ6, Jumonji C-terminal (JmjC) domain-containing demethylase 6; LHP1, LIKE HETEROCHROMATIN PROTEIN1; SDG8, SET DOMAIN GROUP 8. At, Arabidopsis thaliana; Sl, Solanum lycopersicum, tomato; Cp, Carica papaya L., papaya; Cs, Citrus sinensis, sweet orange; Cr, Citrus reticulate, mandarin orange; Ad, Actinidia deliciosa, kiwifruit; Ml, Mimulus lewisii, monkeyflower; Mt, Medicago truncatula