Isolation and characterization of (E)-beta-ocimene and 1,8 cineole synthases in Citrus unshiu Marc

In Satsuma mandarin, 1,8 cineole and (E)-beta-ocimene were comparatively abundant in flowers and then decreased toward fruit development. The transcript accumulation patterns of CitMTSL1 and CitMTSL4 were in good agreement with the biosynthesis of 1,8 cineole and (E)-beta-ocimene. We considered that the regulation of these gene expressions might be controlled according to some functional roles in plant development and that the different volatile profiles in tissues might depend on the gene expression.