RHD2 — Medicago truncatula

Summary

MTR_8G095520, designated MtRHD2, encodes a NAD(P)H oxidase with H2O2-forming and peroxidase activities, containing EF-hand calcium-binding domains and FAD/NAD-binding motifs. This barrel medic gene on chromosome 8 is associated with root hair elongation, initiation, tip growth, and formation, as well as lateral root induction, primary root growth, and phosphorus acquisition. It is linked to nitrogen fixation, nodulation, cell death, innate immunity, metabolic burst, aerobic respiration, and response to ATP. Localisation evidence connects it to the plasmalemma, mitochondria, nucleus, plant-type vacuole, and cytosolic ribosome. Associations also include cadmium tolerance, auxin distribution, cell wall strength, stomatal closure, microtubule organization, extracellular ATP signaling, and potassium homeostasis. Studies of related genes in other species link the family to reactive oxygen species homeostasis, salt stress response, potassium deficiency response, cell division, and defense responses.