AIG1 — Beta vulgaris subsp. vulgaris

Summary

BvAIG1 (BVRB_3G052410) on sugar beet chromosome 3 encodes a protein with abscisic acid binding, protein kinase activator, and protein phosphatase inhibitor activities, belonging to the polyketide cyclase/dehydrase and START-like domain superfamilies. It is associated with regulation of abscisic acid, auxin, salicylic acid, jasmonic acid, and gibberellic acid signaling pathways, as well as stomatal opening, seed dormancy release, and germination. The gene has been linked to traits including seed yield, water use efficiency, transpiration rate, vegetative vigor, shoot growth angle, lateral root length, phosphorus uptake, nitrate sensitivity, osmotic response sensitivity, and wheat powdery mildew disease response, aphid response trait, and insect damage response trait. It localizes to the nucleus, cytosol, plasma membrane, Golgi, and mitochondria. Studies of related genes in other species connect this gene family to drought resistance, salt tolerance, pathogen defense, and seed oil content.