RHD2 — Cucumis sativus

Summary

CsRHD2 (CSA_6G301080) on cucumber chromosome 6 encodes a superoxide-generating NAD(P)H oxidase, also annotated with NAD(P)H oxidase H2O2-forming activity, calcium ion binding, and multiple kinase activities. It belongs to the NADPH oxidase domain family. The 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, root hair development and tip growth, lateral root induction, root growth, and root epidermal cell differentiation. Associations also include grain yield, seed yield, biomass yield, bacterial blight disease resistance, aphid response, water use efficiency, transpiration rate, leaf rolling response, phototropism, aluminum response, phosphorus uptake, and brassinosteroid sensitivity. Studies of related genes in other species link the family to salt, cold, and heat stress tolerance, reactive oxygen species homeostasis, and lateral root formation.