DFR — Capsicum annuum

Summary

T459_06365 (DFR) in pepper (Capsicum annuum) encodes a protein with flavanone 4-reductase and dihydroflavanol 4-reductase activities (EC 1.1.1.234, EC 1.1.1.219), belonging to the NAD(P)-binding domain superfamily. This gene is associated with anthocyanin, flavonoid, and phenylpropanoid biosynthesis, as well as chalcone and flavonol metabolism. It has been connected to fruit color, anthocyanin content, and flavonoid content. Associations also include responses to UV and UV-B light, oxidative and low-temperature stress, photosynthetic ability and rate, stomatal closure, root phototropism, gravity response, auxin polar transport, and sucrose metabolism. The encoded protein localizes to the cytosol, nucleus, endoplasmic reticulum, and tonoplast. Studies of related genes in other species link the DFR family to seed coat pigmentation, UV-B tolerance, flavonol and glucosinolate biosynthesis, male fertility, and pathogen and herbivory responses.