PR3 — Capsicum annuum

Summary

CaPR3 (T459_33510) on pepper chromosome PGAv.1.6.scaffold1231 encodes a protein with chitinase activity (EC 3.2.1.14) and chitin binding, belonging to the glycosyl hydrolase 19 family. The gene is associated with chitin and polysaccharide breakdown, cell wall macromolecule catabolic process, and systemic acquired and induced resistance. It is linked to fruit development, cell death, hypersensitive response programmed cell death, response to fungi, and ethylene-mediated signaling. Associations include ethylene sensitivity, photosynthetic rate, root length, and traits such as pathogen resistance, disease resistance, salt tolerance, seed germination under salt stress, nematode resistance, and wilt symptom development. The protein localizes to secretory vesicles, vacuoles, and the extracellular space. Studies of related genes in other species link the family to pathogen defense, virus resistance, and disease resistance to Botrytis cinerea and bacterial wilt.