PR1 — Triticum aestivum

Summary

TRAESCS2B02G500300 (symbol PR1) on wheat chromosome 2B encodes a Bet v I/Major latex protein domain-containing protein, belonging to the Bet_v_I/MLP and START-like domain superfamilies. The encoded product exhibits abscisic acid binding, nuclease, hydrolase, signaling receptor, and protein phosphatase inhibitor activities. PR1 is associated with systemic acquired resistance, defense response, cell death, signal transduction, and responses to biotic, abiotic, and endogenous stimuli, as well as ABA signaling, photomorphogenesis, phenylpropanoid metabolism, and virus-induced PTGS. It is linked to powdery mildew resistance and disease response in wheat, and to chlorophyll content. The protein localizes to the cytoplasm and nucleus. Studies of related genes in other species connect the family to black point incidence.