ABI1 — Cucumis sativus

Summary

CsABI1 (CSA_3G848150) on cucumber chromosome 3 encodes a protein with a PP2C domain, belonging to the PPM-type phosphatase-like family, and is annotated with multiple molecular functions including sucrose-phosphate synthase activity, kinase regulator activity, and protein phosphatase binding. The gene is associated with abscisic acid (ABA) signaling, drought and salinity responses, and root structure development. It has been linked to traits such as petal length, root system morphology, water stress response, submergence tolerance, biomass yield, seed viability, and yield traits. Additionally, CsABI1 is associated with regulation of actin polymerization, nectar secretion, TOR signaling, response to flooding, and anisotropic cell growth. Studies of related genes in other species link the family to ABA-mediated stomatal closure, heat tolerance, and root hair development.