PYL1 — Oryza sativa Indica Group

Summary

BGIOSGA010919 (PYL1, also known as ABAR6) on chromosome 3 of Indica rice encodes a protein with abscisic acid binding, protein phosphatase inhibitor activity, and kinase regulator activity, placing it in the abscisic acid receptor family. The gene is associated with regulation of abscisic acid-mediated signaling, stomatal movement, seed dormancy release, and germination upregulation. It has been linked to root length, seedling growth, and plant development in this species. Associations include drought tolerance, grain yield, osmotic stress tolerance, flooding tolerance, heat stress response, and salt stress tolerance. The gene is also connected to vegetative vigor, spikelet fertility, shoot branching, transpiration rate, anthocyanin content, and heterosis. Studies of related genes in other species link the family to ABA sensitivity, stomatal response, heat tolerance, and pathogen susceptibility.