EP3 — Hordeum vulgare subsp. vulgare

Summary

HORVU.MOREX.R3.1HG0054950 (HvEP3) on barley chromosome 1H encodes a protein with chitinase activity (EC 3.2.1.14), chitin binding and protein binding functions, belonging to the glycoside hydrolase family 19. The gene is associated with responses to fungi, oomycetes, insects, viruses, salt, hypoxia, silver ions, amitrole, and oxidative stress, as well as systemic acquired resistance, jasmonic acid/ethylene-dependent defense signaling, somatic embryogenesis, spore germination, cell wall catabolism, chitin breakdown, detoxification, and secretion. It is linked to traits including ethylene sensitivity, tiller number, starch and protein content, drought tolerance, and salt tolerance. Localization evidence connects the product to the apoplast, cell wall, vacuole, secretory vesicles, mitochondria, and plasma membrane. Studies of related genes in other species link the family to pollen tube growth and disease resistance to Botrytis cinerea.