PR3 — Cucumis sativus

Summary

CsPR3 (CSA_6G509030) encodes a glycoside hydrolase family 19 catalytic domain-containing protein with chitinase activity and chitin binding. In cucumber, this gene is associated with pathogen defense, defense responses to fungi, systemic acquired resistance, and hypersensitive response-programmed cell death. It is associated with ethylene sensitivity, photosynthetic rate, salt tolerance, seed germination under salt stress, nematode resistance, and wilt symptom development. The gene is associated with biological processes including chitin and polysaccharide breakdown, cell wall macromolecule catabolic processes, hydrogen peroxide biosynthesis, and jasmonic acid/ethylene-dependent systemic resistance. The encoded protein localizes to secretory vesicles, vacuoles, and the extracellular space. Studies of related genes in other species link the chitinase family to disease resistance against Botrytis cinerea and bacterial wilt.