PYL1 — Oryza sativa Indica Group

Summary

BGIOSGA023096 (PYL1, also known as ABAR11) on chromosome 6 of Indica rice encodes a protein with abscisic acid binding, protein phosphatase inhibitor activity, and kinase regulator activity, belonging to the START-like domain superfamily and the polyketide cyclase/dehydrase family. This gene is associated with regulation of abscisic acid mediated signaling, stomatal opening and 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, salt stress tolerance, heat stress response, leaf senescence, transpiration rate, spikelet fertility, seed yield, vegetative vigor, shoot growth angle, root system architecture, and heterosis. Studies of related genes in other species link the family to abscisic acid sensitivity, stomatal response, heat tolerance, and pathogen susceptibility.