PRX2 — Asparagus officinalis

Summary

A4U43_C07F29320, symbol PRX2 (also known as AoPRX2, RHS19, PRX35, PRX73, AoPER51, PER51), encodes a secretory haem peroxidase (EC 1.11.1.7) with lactoperoxidase and peroxidase activity, heme binding, and protein phosphorylated amino acid binding. In asparagus, this gene is associated with cellular respiration, hydrogen peroxide catabolism, response to oxidative stress and stress generally, nitric oxide storage, and brassinosteroid-mediated signalling. It localises to root hairs, vacuoles, the plant-type cell wall, Golgi, extracellular space, mitochondria, and cytosol. The gene has been connected to traits including nitrate uptake, leaf composition, seedling growth, organ identity, root elongation, hypocotyl elongation, root hair growth, lignin biosynthesis, vegetative growth, leaf development, cell proliferation, and nitrate assimilation. Studies of related peroxidases in other species link the family to root hair length, organ size, and calcium signalling.