NPR1 — Brassica juncea

Summary

BJUB05G48670S (BjNPR4, also known as NPR1) encodes a protein containing BTB/POZ, ankyrin repeat, and NPR1/NIM1-like C domains, with DNA-binding transcription factor activity, salicylic acid binding, calmodulin binding, and hydrolase activity. In Indian mustard, this gene is associated with regulation of systemic acquired resistance, salicylic acid- and jasmonic acid-mediated signaling pathways, defense responses to bacteria, fungi, and herbivores, as well as stipule development, floral organ abscission, and response to xenobiotic stimuli. It localizes to the nucleus, cytoplasm, and plasma membrane. Associations with agronomic traits include disease tolerance, drought tolerance, water use efficiency, plant height, flowering time, leaf senescence, root development, nitrogen sensitivity, and panicle length. Studies of related genes in other species link the family to innate immune response and salicylic acid-induced PR-1 expression.