BRI1 — Brassica juncea

Summary

BJUB01G09090S (symbol BRI1, also known as BjLIK1) on Indian mustard chromosome B01 encodes a transmembrane receptor serine/threonine kinase with leucine-rich repeat and malectin domains, exhibiting protein kinase, steroid-binding, chitin-binding, and chitosan-binding activities. The gene is associated with brassinosteroid sensitivity, seed size, water use efficiency, drought tolerance, salt tolerance, and bacterial blight disease resistance. It is linked to regulation of innate immune response, detection of peptidoglycan and fungal molecules, jasmonic acid/ethylene-dependent systemic resistance, cellular response to chitin, stomatal complex morphogenesis and closure time, microtubule bundling, megasporogenesis, microsporogenesis, skotomorphogenesis, and anther wall tapetum development. The encoded protein localizes to the plasma membrane, endosome, plasmodesma, nucleus, cytosol, and extracellular region. Related genes in other species are linked to chitin signaling, fungal immunity, and stomatal immunity.