After the successful reduction of GPAT mRNAs and TAG content by RNAi, the effect of GPAT dsRNA on subsequent PBAN-induced bombykol production was determined using GC/MS. RNAi significantly reduced bombykol production by approximate 50% (Fig. 5E). GPAT-F1 dsRNA had stronger suppression effect than GPAT-F2 dsRNA. This result was consistent with the results of RNAi efficiency and cytoplasmic LD dynamics.