Lycopene β-cyclase Gene Cloning from Citrus sinensis Osbeck ‘Cara Cara‘ and Its Functional Expression in E. coli Isolation of Lycopene |?-Cyclase cDNA from Daucus carota and Its Differential Expression in Roots Lycopene β-cyclase Gene Cloning from Citrus sinensis Osbeck ‘Cara Cara‘ and Its Functional Expression in E. coli