AGR — Brassica oleracea var. botrytis

Summary

BoAGR (AGR, PIN2) on cauliflower chromosome 2 encodes an auxin efflux carrier of the PIN-like family, with auxin efflux transmembrane transporter activity, inositol-1,4-bisphosphate 1-phosphatase activity, and phosphatidylinositol phosphate binding. It is associated with acropetal auxin transport, auxin export across the plasma membrane, root hair initiation, anthocyanin accumulation in response to UV light, detection of oxidative stress, and regulation of jasmonic acid biosynthesis. The gene is linked to numerous traits including gravity response, phototropism, root and shoot architecture, leaf morphology, water use efficiency, stomatal resistance, brassinosteroid and ethylene sensitivity, osmotic response, and stem senescence. Studies of related genes in other species link the family to gravitropic response, root growth direction, auxin efflux, salt and cadmium tolerance, and biomass production.