EP3 — Oryza sativa Indica Group

Summary

BGIOSGA011782 (EP3, OiEP3) on chromosome 3 of indica rice encodes a chitinase with beta-N-acetylglucosaminidase activity, belonging to the glycosyl hydrolase 19 family. The enzyme is associated with chitin binding, protein binding, and localizes to the apoplast, vacuole, cell wall, and secretory vesicles. EP3 is associated with responses to fungi, oomycetes, insects, and viruses, as well as systemic acquired resistance, jasmonic acid/ethylene-dependent signaling, somatic embryogenesis, and hypoxia. It is associated with drought tolerance, salt tolerance, seed germination under salt stress, ethylene sensitivity, and pathogen resistance, including against Magnaporthe oryzae and nematodes. Related genes in other species are linked to pollen tube growth and disease resistance to Botrytis cinerea.