EP3 — Brachypodium distachyon

Summary

BdEP3 (BRADI_1G29887V3) on Brachypodium distachyon chromosome 1 encodes a protein with chitinase and beta-N-acetylglucosaminidase activities and chitin-binding capacity, belonging to the glycoside hydrolase 19 family. This 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 silver ions. The encoded protein localizes to the apoplast, cell wall, vacuole, secretory vesicles, and plasma membrane. BdEP3 has been connected to pathogen resistance, salt tolerance, seed germination under salt stress, ethylene sensitivity, and nematode resistance. Related genes in other species link the family to pollen tube growth and disease resistance to Botrytis cinerea.