RHD2 — Solanum tuberosum

Summary

PGSC0003DMG400024754, designated RHD2 and also known as RBOHB, encodes a respiratory burst oxidase homolog on potato chromosome 1. The product contains NADPH oxidase, FAD-binding, and EF-hand domains and exhibits NAD(P)H oxidase H2O2-forming activity, calcium ion binding, and multiple kinase activities. This gene is associated with the respiratory burst involved in defense response, immune response-regulating signaling, defense response by callose deposition, and H2O2 biosynthetic process. It is linked to root hair elongation and development, lateral root induction, root growth, auxin distribution, and cell wall strength. Associations also include grain yield, seed yield, biomass yield, bacterial blight disease resistance, net photosynthetic rate, water use efficiency, leaf rolling response, and tuber dormancy release. The protein localizes to the endosome, ER, Golgi, plastid, and extracellular regions. Studies of related genes in other species link the family to salt, cold, heat, and oxidative stress tolerance, as well as late blight resistance and hydrotropism.