RHD2 — Beta vulgaris subsp. vulgaris

Summary

BVRB_7G174850 (RHD2) on sugar beet chromosome 7 encodes a protein containing NADPH oxidase, FAD-binding, ferric reductase, and EF-hand calcium-binding domains, with NAD(P)H oxidase H2O2-forming activity, calcium ion binding, and multiple kinase activities. This gene is associated with root hair development, elongation, initiation, and tip growth, as well as lateral root induction, root growth, and phosphorus acquisition. It is linked to defense responses including respiratory burst, callose deposition, immune signaling, and bacterial blight disease resistance, along with responses to osmotic stress, aluminum, aphids, and ethylene. Associations also include grain yield, seed yield, biomass yield, water use efficiency, transpiration rate, leaf rolling, anthocyanin content, brassinosteroid sensitivity, and stomatal resistance. Studies of related RBOH family members in other species link the family to salt, heat, cold, and oxidative stress tolerance, lateral root development, and photosynthetic induction.