PYL1 — Brachypodium distachyon

Summary

BdPYL1 (BRADI_2G22510V3) on chromosome 2 of Brachypodium distachyon encodes a protein with abscisic acid (ABA) binding, protein phosphatase inhibitor, and kinase regulator activities, belonging to the START-like domain superfamily and polyketide cyclase/dehydrase family. It is associated with regulation of ABA-mediated signaling, stomatal opening and movement, seed dormancy release and germination, and activation of defense responses to bacteria and salinity. The gene is linked to traits including drought resistance, osmotic and salt stress tolerance, vegetative vigor, seed yield, transpiration rate, anthocyanin content, and responses to high and low temperature stress. Studies of related genes in other species connect the family to ABA signaling, drought tolerance, grain yield, root length, and heat stress tolerance.