PYL1 — Oryza sativa Japonica

Summary

OsPYL1 (OS01G0827800) on rice chromosome 1 encodes a protein with abscisic acid (ABA) binding, protein phosphatase inhibitor, and kinase regulator activities, placing it in the polyketide cyclase/dehydrase and START-like domain superfamilies. It is associated with ABA signalling, seed dormancy release, seed germination, root length, seedling growth, and plant development. The gene is linked to traits including seed longevity and viability, grain yield, leaf length, shoot growth angle, transpiration rate, stomatal closure, hydrogen peroxide and proline content, and responses to drought, high temperature, osmotic stress, nitrate, and powdery mildew. Localisation evidence connects the product to the cytosol, plasma membrane, tonoplast, plastid, mitochondria, and Golgi. Related genes in other species are associated with ABA sensitivity, stomatal regulation, heat tolerance, and pathogen susceptibility.