PAT — Beta vulgaris subsp. vulgaris

Summary

BvPAT (BVRB_9G220350) on sugar beet chromosome 9 encodes a pyridoxal phosphate-dependent aminotransferase with multiple transaminase activities, including methionine-oxo-acid, nicotianamine aminotransferase, and 1-aminocyclopropane-1-carboxylate synthase activity. The gene is associated with inhibition of IAA biosynthesis, negative regulation of ethylene biosynthesis, tyrosine breakdown, methionine metabolism, L-phenylalanine anabolism, shade avoidance, auxin and ethylene anabolism, fruit ripening, and defense response. It is linked to IAA content and phenotypes including auxin and ethylene biosynthesis, indole-3-acetic acid production, and aromatic amino acid homeostasis. The protein localizes to mitochondria and cytosol. Related genes in other species connect the family to chilling stress response, harvest index, and sugar content.