PR3 — Beta vulgaris subsp. vulgaris

Summary

BvPR3 (BVRB_3G057670) on sugar beet chromosome 3 encodes a protein with a Glyco_hydro_19_cat domain and a Lysozyme-like_dom_sf domain, and is annotated with chitinase activity and chitin binding. It is associated with cell wall macromolecule catabolic process, chitin and polysaccharide breakdown, defence response to fungi, and jasmonic acid/ethylene-dependent systemic resistance signalling. The gene has been linked to ethylene sensitivity, photosynthetic rate, root length, and associations including pathogen resistance, disease resistance, nematode resistance, wilt symptom development, salt tolerance, seed germination under salt stress, mycorrhization, and anthocyanin biosynthesis. The protein localises to secretory vesicles, vacuoles, and the extracellular space. Studies of related genes in other species connect the family to additional agronomic traits such as fruit weight, leaf area, root biomass, and carotenoid content.