AIG1 — Beta vulgaris subsp. vulgaris

Summary

BvAIG1 (BVRB_1G003320) on sugar beet chromosome 1 encodes a protein with abscisic acid binding, protein phosphatase inhibitor activity, and protein kinase activator activity, and belongs to the polyketide cyclase/dehydrase and START-like domain superfamilies. The gene is associated with regulation of abscisic acid, auxin, gibberellic acid, jasmonic acid, and salicylic acid mediated signaling pathways, as well as stomatal opening, seed dormancy release, and germination. It has been linked to traits including water use efficiency, transpiration rate, seed yield, vegetative vigor, shoot branching, lateral root length, phosphorus uptake, nitrate sensitivity, and responses to osmotic stress, salinity, aphids, and powdery mildew. Localization evidence connects the product to the cytosol, nucleus, plasma membrane, Golgi, and mitochondria. Studies of related genes in other species link the family to drought resistance, pathogen defense, and seed oil content.