F3H — Brassica juncea

Summary

BJUA09G21710S (BjF3H) on chromosome A09 of Indian mustard encodes a flavanone 3-dioxygenase, also annotated with chalcone isomerase and flavonol synthase activities, and belongs to the 2-oxoglutarate/Fe(II)-dependent dioxygenase family. The gene is associated with anthocyanin, flavonoid, coumarin and phenylpropanoid biosynthesis, pigmentation, responses to UV-B, UV light, auxin and fungal molecules, and nitric oxide storage. It is linked to seed and leaf color, stamen morphology, root phototropism, respiration rate, oxidative stress response, and anthocyanin content. Associations also include proanthocyanidin accumulation, cold acclimation, circadian clock regulation, photosynthetic activity, lateral root development, genome stability, and resistance to cyst and root-knot nematodes. The protein localises to the cytosol, nucleus, endoplasmic reticulum and tonoplast. Studies of related genes in other species link the family to seed coat pigmentation, UV-B tolerance, flavonoid production and glucosinolate biosynthesis.