Molecular cloning and functional identification of an insect odorant receptor gene in Spodoptera litura (F.) for the botanical insecticide rhodojaponin III

► We cloned a gene encoding Or83b from the insect S. litura. ► We examined the developmental expression patterns of Or83b in the S. litura. ► We analyzed the tissues expression patterns of Or83b in the S. litura. ► RNAi of SlOr83b led to a phenotype characterized by confusion in recognizing the botanical insecticide rhodojaponin III.