PR-1 — Solanum lycopersicum

Summary

SlPR-1 (SOLYC07G006710.2) on tomato chromosome 7 encodes a CAP-domain protein belonging to the V5 allergen-like family, related to CRISP and PR-1 proteins. In tomato, SlPR-1 is associated with pathogen and herbivore resistance, and has been linked to traits including fruit firmness, fruit size and shape, plant height, seedling vigor, chlorophyll and flavonoid content, drought tolerance, and abscisic acid sensitivity. The gene is associated with biological processes such as induced systemic resistance, cell wall modification, response to water, and sterol anabolism, and its product localizes to the extracellular region and vacuole. Studies of related genes in other species link the family to late blight resistance in potato and defense responses in cucumber.