PYL5 — Arabidopsis thaliana

Summary

AT5G05440 (PYL5) in Arabidopsis thaliana encodes a protein with abscisic acid binding, protein phosphatase inhibitor activity, and signaling receptor activity, belonging to the START-like domain superfamily and the polyketide cyclase/dehydrase family. PYL5 is associated with ABA-mediated signaling, ABA homeostasis, regulation of stomatal opening, response to water and drought, and downregulation of seed dormancy. It is linked to anthocyanin production, jasmonate response, chlorophyll breakdown, MAPK cascade, and protein dephosphorylation. The gene has been connected to traits including drought recovery, drought sensitivity, leaf water potential, transpiration rate, biomass yield, seed yield, root branching, submergence tolerance, salt response, and vegetative vigor. PYL5 localizes to the cytosol, nucleus, tonoplast, and Golgi complex, and is associated with phosphate metabolism and hormone metabolism.