RHD2 — Phaseolus vulgaris

Summary

PHAVU_009G159200, designated PvRHD2, encodes a respiratory burst oxidase homolog (RBOH) protein containing NADPH oxidase, FAD-binding, and EF-hand calcium-binding domains, with NAD(P)H oxidase H2O2-forming and peroxidase activities. In French bean, this gene is associated with root epidermal cell differentiation, root development, nodulation, organogenesis, aerobic respiration, cell growth, and response to ATP. It is linked to root hair elongation, initiation, tip growth, and formation, as well as lateral root induction, primary root growth, auxin distribution, phosphorus acquisition, cadmium tolerance, stomatal closure, microtubule organization, extracellular ATP signaling, and potassium homeostasis. The protein localizes to the plasmalemma, mitochondria, nucleus, plant-type vacuole, and cytosolic ribosome. Studies of related genes in other species connect the family to reactive oxygen species homeostasis, salt stress response, potassium deficiency response, cell division, and defense responses.