Constitutive over-expression of antifungal genes from microorganisms involved in plant defence mechanisms represents an efficient strategy to confer genetic resistance against a broad range of phytopathogenic fungi. In lemon (Citrus limon (L.) Burm. f.), fungal diseases cause economic losses in the field as well as in postharvest management. In this study, fruits collected from two different transgenic lemon clones (E23 and E24) expressing a chitinase gene (chit42) from Trichoderma harzianum were tested to investigate the level of resistance against Penicillium digitatum, P. italicum, Colletot...
