RD — Sorghum bicolor

Summary

SORBI_3004G050200 (SbRD) on sorghum chromosome 4 encodes a protein with NAD(P)-binding and epimerase/dehydratase domains and exhibits flavanone 4-reductase, dihydroflavanol 4-reductase, flavonol synthase, chalcone isomerase, and naringenin-chalcone synthase activities (EC 1.1.1.234, 1.1.1.219). The gene is associated with anthocyanin, flavonoid, and chalcone biosynthesis, pigmentation, and regulation of phenylpropanoid and anthocyanin metabolism. It is linked to responses to UV, UV-B, light, oxidative stress, jasmonic acid, auxin, wounding, and gravity, as well as auxin polar transport and detoxification. Associations include seed coat color, anthocyanin content, plant height, photosynthetic ability, herbicide sensitivity, insect damage response, low temperature and oxidative stress tolerance, root phototropism, adventitious rootless, stamen morphology, flower development, pollen fertility, stomatal closure, and nitrogen stress tolerance. The protein localizes to the cytosol, nucleus, endoplasmic reticulum, and tonoplast.