DFR — Asparagus officinalis

Summary

A4U43_C05F6960, designated AoDFR, encodes a protein with flavanone 4-reductase, dihydroflavanol 4-reductase, chalcone isomerase, naringenin-chalcone synthase, and flavonol synthase activities, belonging to the NAD(P)-dependent dehydratase/epimerase family. In asparagus, AoDFR is associated with anthocyanin, flavonoid, and flavonol biosynthesis, as well as the regulation of phenylpropanoid and anthocyanin metabolism. The gene is linked to responses to UV and UV-B light, jasmonic acid, oxidative stress, wounding, gravity, and auxin, and to auxin polar transport. Traits connected to AoDFR include anthocyanin and flavonoid content, photosynthetic ability and rate, UV light sensitivity, root phototropism, stamen and flower development, pollen fertility, and tolerance to low temperature, oxidative stress, and nitrogen stress. The protein localizes to the cytosol, nucleus, endoplasmic reticulum, and tonoplast.