PYL1 — Oryza sativa Japonica

Summary

OsPYL1 (OS10G0573400) on rice chromosome 10 encodes a protein with abscisic acid binding, protein phosphatase inhibitor activity, and kinase regulator activity, placing it in the abscisic acid receptor family. It is associated with abscisic acid signalling, seed dormancy release, and upregulation of seed germination and growth. In rice, the gene has been linked to root length, seedling development, and ABA signalling. It is also associated with a wide range of traits including drought tolerance, grain yield, seed longevity, vegetative vigor, stomatal closure, transpiration rate, and responses to osmotic, salt, heat, and flooding stress. The protein localises to the cytosol, tonoplast, plastid, mitochondria, and Golgi complex. Studies of related genes in other species connect the family to abscisic acid sensitivity, stomatal response, heat tolerance, and biomass.