PR1 — Brassica juncea

Summary

BjPR1 (BJUA03G19640S) on Indian mustard chromosome A03 encodes a CAP-domain protein with cytokine activity and protein binding capacity. The gene is associated with immune activation, defense responses to fungi and other organisms, cell death, seed germination, and sexual reproduction. It localizes to secretory vesicles, vacuoles, and the plant cell wall. BjPR1 is associated with systemic acquired resistance, salicylic acid signaling, and resistance to pathogens including Rhizoctonia solani, Pseudomonas syringae, Verticillium dahliae, and nematodes, as well as with salt tolerance, cadmium response, and aphid resistance. Studies of related genes in other species link the family to disease resistance, salicylic acid-mediated defense, abiotic stress tolerance, and herbivore defense.