EP3 — Brachypodium distachyon

Summary

BdEP3 (BRADI_3G48230V3) on chromosome 3 of Brachypodium distachyon encodes a protein with glycosyl hydrolase family 19 and chitin-binding domains, and is annotated with chitinase activity (EC 3.2.1.14) and chitin binding. The gene is associated with responses to fungi, bacteria, oomycetes, viruses, and insects, as well as systemic acquired resistance, jasmonic acid/ethylene-dependent defense signaling, hypersensitive response cell death, leaf senescence, and somatic embryogenesis. It is linked to chitin and polysaccharide breakdown, cell wall macromolecule catabolism, amino sugar metabolism, and cellular responses to hypoxia and amitrole or silver ion. The product localizes to the apoplast, plant-type cell wall, vacuole, secretory vesicle, and plasma membrane. Associations with pathogen resistance, salt tolerance, seed germination under salt stress, ethylene sensitivity, and nematode resistance have been noted. Related genes in other species are linked to pollen tube growth and disease resistance to Botrytis cinerea.