AGR — Solanum lycopersicum

Summary

SOLYC04G007690.3, the tomato AGR gene on chromosome 4, encodes a PIN-family auxin efflux carrier with auxin efflux transmembrane transporter activity, inositol-1,4-bisphosphate 1-phosphatase activity, and clathrin binding. It is associated with auxin signalling, clathrin-mediated endocytosis of PIN proteins, and regulation of seed size and reproductive structure development. The gene has been linked to leaf flattening, flower abscission, shoot architecture, and parthenocarpic fruit development in tomato. It is also associated with gravity and phototropism responses, root and shoot growth traits, leaf chlorophyll content, seed set, fruit growth, and sensitivity to blue light, manganese, and herbicides. Localisation evidence places the product at the auxin efflux carrier complex, basal and lateral plasma membrane, recycling endosome, and clathrin-coated endocytic vesicle. Studies of related genes in other species link the family to root patterning, flowering time, osmotic stress tolerance, and biomass production.