ERD4 — Brassica juncea

Summary

BjERD4 (BJUB03G45720S) on chromosome B03 of Indian mustard encodes a CSC1/OSCA1-like protein with calcium-activated cation channel activity, also associated with mRNA and protein binding. The gene is associated with defence responses against bacteria, including negative regulation of the hypersensitive response and programmed cell death, as well as responses to bacterial molecules and thirst. Associations extend to seed germination, protein phosphorylation, and traits such as drought tolerance, bacterial disease response, stomatal opening, and leaf number. The product localises to multiple cellular compartments including the plasma membrane, chloroplast membrane and envelope, plant-type vacuole, plasmodesma, cytosol, and nucleus. Related genes in other species connect the family to mechanosensitivity, while related gene RIN4 links BjERD4 to plant immunity and resistance pathways.