PYL1 — Brachypodium distachyon

Summary

BRADI_1G65130V3, designated BdPYL1, encodes a protein with abscisic acid (ABA) binding, protein phosphatase inhibitor activity, and kinase regulator activity, placing it in the PYR/PYL/RCAR family of ABA receptors. In Brachypodium distachyon, this gene is associated with regulation of stomatal opening and movement, seed dormancy release and germination, and both upregulation and downregulation of ABA-mediated signaling. It is also linked to activation of defence responses to bacteria, salinity response, and antiviral response. Associations with agronomic traits include drought resistance, osmotic stress tolerance, salt stress tolerance, flooding tolerance, leaf senescence, water use efficiency, seed yield, and vegetative vigor. Studies of related genes in other species link the family to drought tolerance, grain yield, heat tolerance, and ABA-regulated gene expression.