RHD2 — Cucumis melo

Summary

MELO3C026754.2 (CmRHD2) on melon chromosome 5 encodes a respiratory burst oxidase homolog (RBOH) with NAD(P)H oxidase H2O2-forming activity, calcium ion binding, and multiple kinase and receptor-binding domains. The gene is associated with immune response-regulating signaling, defense response by callose deposition, respiratory burst involved in defense, H2O2 biosynthesis, and detection of bacteria. It is linked to root hair elongation, root growth, lateral root induction, auxin distribution, cell wall strength, and phosphorus acquisition. Associations also include grain yield, seed yield, biomass yield, water use efficiency, bacterial blight disease resistance, aphid response, aluminum response, osmotic sensitivity, brassinosteroid sensitivity, ethylene sensitivity, leaf rolling, phototropism, and stomatal closure time. The protein localizes to the protein storage vacuole, endosome, ER, Golgi, plastid, and extracellular space. Studies of related genes in other species connect the family to salt, cold, heat, and oxidative stress tolerance, as well as lateral root development and photosynthetic induction.