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Transcriptional Differences Between Scotophase and Photophase in the Pheromone Glands of Plutella xylostella (L.)
Species-specific sex pheromones play an important role in mediating sexual behavior and pheromone biosynthesis activating neuropeptide (PBAN) stimulates the pheromone production. Previously, we identified PBAN and PBAN receptor gene and reported the functionality of these genes via heterologous expression and RNAi (BBA-general subjects, 2005 and IBMB, 2011). To find the differences in the transcriptional level between scotophase and photophase in the pheromone gland of P. xylostella, total RNA was extracted from the adults and transcriptomes of the pheromone glands were analyzed by RNA-seq. The genes related to the pheromone biosynthesis were identified and the putative pathway of pheromone biosynthesis was predicted. Compared to the expression level of pheromonebiosynthesis-related genes between scotophase and photophase, the expression of fatty acid reductase (FAR) exhibited the significant difference in the putative pheromone biosynthesis pathway, suggesting that FAR is the key enzyme regulating the pheromone biosynthesis.
