BG2 — Brassica juncea

Summary

BJUB08G03730S (BjBG2) encodes a glycosyl hydrolase family 17 protein with lichenase, cellulase, glucan exo-1,3-beta-glucosidase and glucan endo-1,3-beta-D-glucosidase activities. In Indian mustard, this gene is associated with carbohydrate metabolism, seed germination, cell death, brassinosteroid-mediated signalling, response to cold, and sterol and isoprenoid anabolism. The encoded protein localises to the secretory vesicle, vacuole, plant-type cell wall, apoplast, Golgi complex, mitochondria and cytosol. BjBG2 is associated with nitrate uptake, leaf composition, seedling growth and development, organ identity, and traits including aphid susceptibility, disease resistance, drought tolerance, salt tolerance, dehydration resistance, osmotic stress response, callose deposition and biosynthesis, cellulose biosynthesis, systemic acquired resistance, and resistance to Verticillium dahliae. Studies of related genes in other species link the family to induced systemic resistance, pathogen and virus resistance, cell wall modification, organ size, calcium signalling and protein-protein interactions.