PR3 — Phaseolus vulgaris

Summary

PHAVU_003G268600, designated PvPR3, encodes a protein with an endochitinase-like domain and glycoside hydrolase family 19 domains, with chitinase activity and chitin binding capability. This French bean gene on chromosome 3 is associated with cell wall macromolecule catabolic processes, chitin and polysaccharide breakdown, and defence responses to fungi. It has been linked to hypersensitive response programmed cell death, jasmonic acid/ethylene-dependent systemic resistance, and ethylene-mediated signalling. PvPR3 localises to the protoplasm, secretory vesicles, vacuoles, and extracellular space. The gene is associated with ethylene sensitivity, wilt symptom development, nematode resistance, salt tolerance, seed germination under salt stress, and pathogen resistance. Studies of related genes in other species connect the family to disease tolerance, salt response, chlorophyll content, plant height, and root number traits.