Isolation and characterization of a new d-limonene synthase gene with a different expression pattern in Citrus unshiu Marc

Under different expression regulations in response to the fruit developmental stage, the mRNA expression of CitMTSE2 indicated a specificity to fruit tissue and was different from that of CitMTSE1. Occurring mainly in peel at an early stage of fruit development, the mRNA expression profile of CitMTSE2 was similar to that of d-limonene biosynthesis in C. unshiu.