ABI1 — Brassica oleracea var. botrytis

Summary

BoABI1 (BOLND125_C01P026710.1) on cauliflower chromosome 1 encodes a protein with PP2C and PPM-type phosphatase-like domains, associated with abscisic acid binding, protein phosphatase regulator activity, and sucrose-phosphate synthase activity. This gene is linked to diverse biological processes including nectar secretion, actin filament organization, regulation of cell wall cellulose biosynthesis, and response to flooding. It has been connected to numerous agronomically relevant traits such as yield, seed yield, biomass yield, water use efficiency, stem diameter, leaf elongation rate, inflorescence size, petal length, root system morphology, and responses to water stress, nitrogen, and magnesium. Associations also include seed viability, lateral root number, lignin biosynthesis, and resistance to powdery mildew. Related genes in other species link the family to ABA-mediated stomatal closure, drought recovery, heat tolerance, and sucrose biosynthesis.