F3H — Hordeum vulgare subsp. vulgare

Summary

HORVU.MOREX.R3.2HG0201360 (HvF3H) on barley chromosome 2H encodes a flavanone 3-dioxygenase (EC 1.14.11.9) with flavonol synthase and chalcone isomerase activities, belonging to the 2-oxoglutarate/Fe(II)-dependent dioxygenase superfamily. The gene is associated with anthocyanin, flavonoid, coumarin and phenylpropanoid biosynthesis, pigmentation, and responses to UV-B, UV light, auxin and fungal molecules. HvF3H has been linked to seed coat color, anthocyanin content, stamen morphology, root phototropism, IAA content, oxidative stress response, cold acclimation, photosynthetic activity, circadian clock regulation, and root gravitropism. The protein localises to the cytosol, nucleus, endoplasmic reticulum and tonoplast. Studies of related genes in other species connect the family to grain color, yield, plant height, drought tolerance, seed germination, chlorophyll content, and root length.