EP3 — Oryza sativa Indica Group

Summary

BGIOSGA006087 (EP3, OiEP3) on chromosome 2 of Indica rice encodes a chitinase with chitin-binding and glycosyl hydrolase family 19 domains, classified as EC 3.2.1.14. The gene is associated with chitin breakdown, polysaccharide catabolism, cell wall modification, and membrane biogenesis. It is linked to responses to fungi, oomycetes, insects, viruses, silver ions, amitrole, and hypoxia, as well as to systemic acquired resistance, jasmonic acid/ethylene-dependent defense signaling, and somatic embryogenesis. The encoded protein localizes to the apoplast, cell wall, vacuole, secretory vesicles, and extracellular space. Associations with drought tolerance, salt tolerance, seed germination under salt stress, ethylene sensitivity, and pathogen resistance have been noted. Related genes in other species are linked to pollen tube growth and resistance to Botrytis cinerea.