RD — Hordeum vulgare subsp. vulgare

Summary

HORVU.MOREX.R3.3HG0274170 (HvRD) on barley chromosome 3H encodes a protein with dihydroflavanol 4-reductase, flavanone 4-reductase, flavonol synthase, naringenin-chalcone synthase and chalcone isomerase activities. The gene is associated with anthocyanin, flavonol and proanthocyanidin accumulation, pigmentation, seed coat color, and responses to UV-B, oxidative stress, wounding, jasmonic acid and auxin. It is linked to plant height, photosynthetic ability, root phototropism, stamen morphology, pollen fertility, stomatal closure, herbicide sensitivity, insect damage, and tolerance to low temperature, nitrogen stress and nematodes. The encoded protein localises to the cytosol, nucleus, tonoplast and endoplasmic reticulum. Studies of related genes in other species connect the family to flavonoid biosynthesis, UV-B tolerance, seed coat pigmentation, lateral root development and genome stability.