AGR — Hordeum vulgare subsp. vulgare

Summary

HORVU.MOREX.R3.1HG0091250 (HvAGR) on barley chromosome 1H encodes a PIN-like auxin efflux carrier, a member of the auxin efflux carrier family. The gene product is associated with auxin efflux and influx transmembrane transporter activities, inositol-1,4-bisphosphate 1-phosphatase activity, and clathrin binding. It is linked to tropism, detection of oxidative stress, regulation of endocytosis, phragmoplast microtubule organization, and plant organ boundary formation. Associations include gravity response, phototropism, root and shoot growth angles, seed set, leaf vein morphology, stamen and anther morphology, and responses to blue light, manganese, boron, and osmotic stress. The gene is also associated with auxin signalling, regulation of seed size, and reproductive structure development. Studies of related genes in other species link the family to plant height, tiller number, root system architecture, and pollen development.