F3H — Daucus carota subsp. sativus

Summary

DCAR_009489 (DcF3H) on carrot chromosome 3 encodes a 2-oxoglutarate/Fe(II)-dependent dioxygenase with flavanone 3-dioxygenase, flavonol synthase, flavone synthase, and chalcone isomerase activities. It is associated with flavonoid and anthocyanin biosynthesis, coumarin metabolism, and responses to UV-B, auxin, and fungal molecules. The gene is linked to root development, root color, anthocyanin and flavonoid content, and traits including stamen morphology, root phototropism, and UV-B light sensitivity. Associations extend to powdery mildew resistance, pollen thermotolerance and viability, cold acclimation, circadian clock regulation, photosynthetic activity, and oxidative stress tolerance. Related genes in other species link the family to proanthocyanidin accumulation and seed coat pigmentation, and to stress tolerance.