PR3 — Solanum lycopersicum

Summary

SlPR3 (SOLYC10G074440.2) encodes a chitinase with chitinase activity and chitin binding, belonging to the Glyco_hydro_19 family and the endochitinase-like superfamily. In tomato, this gene is associated with a wide range of biological processes, including tube development, cell wall macromolecule catabolic process, chitin breakdown, and response to amino acid. It has also been linked to lycopene anabolism, chlorophyll metabolism, and hormone metabolism. At the trait level, SlPR3 is connected to fruit firmness, sugar content, seed maturation, plant height, root fresh weight, stem diameter, and leaf chlorosis. Additionally, it is associated with drought tolerance, net photosynthetic rate, stomatal resistance, chlorophyll content, and photochemical quenching. The encoded protein localizes to the vacuole. Studies of related genes in other species link the family to EC 3.2.1.14 (chitinase) activity.