ABI1 — Brassica oleracea var. botrytis

Summary

BoABI1 (BOLND125_C08P020310.1_BOLND125_V1) on cauliflower chromosome 8 encodes a protein with PP2C and PPM-type phosphatase domains, and is annotated with abscisic acid binding, protein phosphatase regulator and inhibitor activities, and sucrose-phosphate synthase activity. The gene is associated with diverse biological processes including nectar secretion, actin filament organization, regulation of cell wall cellulose biosynthesis, petal morphogenesis, response to flooding, and negative regulation of the hypersensitive response. It has been linked to traits such as petal length, stem diameter, inflorescence size, root system morphology, leaf elongation rate, water stress response, biomass yield, seed viability, yield, and water use efficiency. Phenotypic associations include impaired ABA-activated stomatal closure, altered cell expansion, resistance to powdery mildew, and oxidative stress tolerance. Related genes in other species are linked to drought recovery, heat tolerance, ABA-mediated stomatal closure, and lateral root development.