PYL1 — Oryza sativa Japonica

Summary

OsPYL1 (OS06G0562200) on rice chromosome 6 encodes a protein with abscisic acid binding, protein phosphatase inhibitor activity, and kinase regulator activity, belonging to the polyketide cyclase/dehydrase and START-like domain superfamilies. It is associated with abscisic acid signalling, seed dormancy release, seed germination, growth regulation, carbohydrate breakdown, secondary metabolite biosynthesis, and protein dephosphorylation. The gene has been linked to root length, seedling growth, and plant development in rice. Associations also connect OsPYL1 to drought tolerance, grain yield, seed longevity, osmotic stress response, stomatal closure, transpiration rate, leaf senescence, and salt stress tolerance. Studies of related genes in other species link the family to abscisic acid sensitivity, stomatal response, heat tolerance, and root growth sensitivity to abscisic acid.