ABI1 — Brassica oleracea var. botrytis

Summary

BoABI1 (BOLND125_C06P029190.1_BOLND125_V1) on cauliflower chromosome 6 encodes a protein with a PPM-type phosphatase-like domain and is annotated with multiple molecular functions including abscisic acid binding, sucrose-phosphate synthase activity, and protein phosphatase regulator activity. The gene is associated with diverse biological processes such as nectar secretion, actin cytoskeleton organization, regulation of cell wall cellulose biosynthesis, and response to flooding. It has been linked to numerous agronomically relevant traits including yield, biomass, seed viability, water use efficiency, stem diameter, inflorescence size, petal length, and leaf elongation rate. Associations also include responses to water stress, nitrogen sensitivity, iron concentration, and powdery mildew disease. Studies of related genes in other species connect the family to ABA-mediated stomatal closure, heat and cold stress tolerance, lateral root development, and trichome morphogenesis.