PR3 — Phaseolus vulgaris

Summary

PHAVU_002G114100, designated PvPR3, encodes a protein with the glycoside hydrolase family 19 domain, chitinase activity, beta-N-acetylglucosaminidase activity, and chitin binding. In French bean, this gene is associated with defence responses to fungi, chitin breakdown, cell wall macromolecule catabolism, and hypersensitive response-programmed cell death. It is associated with jasmonic acid/ethylene-dependent systemic resistance and ethylene-mediated signalling. The encoded protein localises to the vacuole, secretory vesicles, and extracellular space. PvPR3 has been linked to ethylene sensitivity, pathogen resistance, nematode resistance, salt tolerance, seed germination under salt stress, and wilt symptom development. Studies of related genes in other species link the family to disease tolerance, salt response, chlorophyll content, and plant height.