The role of ethylene in plant development is mostly inferred from its exogenous application. usage mutants affecting biosynthesis proffers a better alternative to decipher role. In tomato (Solanum lycopersicum), 1-aminocyclopropane carboxylic acid synthase2 (ACS2) key enzyme regulating ripening-specific biosynthesis. We characterised two contrasting acs2 mutants; acs2-1 overproduces ethylene, h...