PR3 — Solanum lycopersicum

Summary

SOLYC02G082920.4 (PR3, also known as CHI3) encodes a protein with chitinase activity and chitin binding, belonging to the glycosyl hydrolase 19 family. In tomato, PR3 is associated with virus resistance and bacterial wilt resistance. The gene has been linked to numerous traits including fruit weight, fruit width, fruit shape, fruit color, firmness, lycopene content, carotenoid content, flavonoid content, amino acid content, harvest index, spike weight, percent germination, seedling vigor, leaf area index, leaf relative water content, leaf chlorosis, leaf curling, leaf number, stem diameter, root and shoot fresh and dry weights, root branching, net photosynthetic rate, selenium and proline content, growth hormone content, and self-incompatibility. It is also associated with pathogen resistance, disease resistance, nematode resistance, salt tolerance, seed germination under salt stress, mycorrhization, and wilt symptom development. The encoded protein localizes to the vacuole, secretory vesicle, and extracellular space.