NPR1 — Pisum sativum

Summary

PSAT2G017520 (symbol NPR1, also known as PsNPR3/PsNPR4) on chromosome 2LG1 encodes a transcriptional co-regulator with salicylic acid binding, calmodulin binding, hydrolase activity, and DNA-binding transcription factor activity, belonging to the NPR1/NIM1-like family with BTB/POZ and ankyrin repeat domains. In garden pea, this gene is associated with regulation of systemic acquired resistance, salicylic acid and jasmonic acid mediated signaling pathways, defense responses to bacteria, fungi, herbivores, and insects, as well as stipule development, floral organ abscission, response to hypoxia, and xenobiotic stimulus. It localizes to the nucleus, cytoplasm, nuclear body, and plasmalemma. Associations with agronomic traits include responses to bacterial blight, powdery mildew, stripe rust, Cercospora leaf spot, downy mildew, drought, and aluminum, as well as effects on relative growth rate, stem senescence, inflorescence morphology, and root development. Studies of related genes in other species link the family to resistance against Huanglongbing, Fusarium head blight, and Pseudomonas syringae.