PYL1 — Triticum aestivum

Summary

TRAESCS3D02G161500, designated TaPYL1 on wheat chromosome 3D, encodes a protein with abscisic acid binding, protein phosphatase inhibitor, signaling receptor and protein homodimerization activities, belonging to the polyketide cyclase/dehydrase and START-like domain superfamily. In bread wheat, TaPYL1 is associated with seed dormancy, seed development, seed germination, seedling development, and responses to ABA, osmotic stress, salinity, thirst and cold. It is also linked to arginine and starch anabolism, the MAPK cascade, nitric oxide storage, and localises to the cytosol, cytoplasm and nucleus. Associations with grain width, grain weight, shoot fresh weight, proline content and drought tolerance have been noted. Studies of related genes in other species connect the family to ABA perception and stress signalling.