PR3 — Capsicum annuum

Summary

CaPR3 (T459_06173) on pepper chromosome 2 encodes a protein with chitinase activity (EC 3.2.1.14) and chitin binding, belonging to the glycoside hydrolase family 19. The gene is associated with defence responses to fungi, cell death, hypersensitive response-programmed cell death, and virus-induced post-transcriptional gene silencing. It is linked to chitin and polysaccharide breakdown, cell wall macromolecule catabolic processes, and localisation to secretory vesicles, vacuoles, and the extracellular space. CaPR3 has been connected to ethylene sensitivity, photosynthetic rate, and traits including pathogen, disease, and nematode resistance, salt tolerance, seed germination under salt stress, and wilt symptom development. Studies of related genes in other species link the family to resistance to Botrytis cinerea and bacterial wilt.