Latrophilin of Tribolium castaneum (Tclph) has been reported to play crucial roles in growth, development and reproduction. However, the regulatory mechanism of Tclph associated with these physiology processes is unknown. Thus, the global transcriptome profiles between RNAi treated (ds-Tclph) and control larvae of T. castaneum were analyzed by RNA-sequencing. Totally, 274 differentially expressed genes (DEGs) were identified between the ds-Tclph and control samples. These DEGs were classified into 42 GO functional groups, including developmental process, reproduction and stress response. The results indicated that knockdown of Tclph disturbed the antioxidant activity process, and partially inhibited the serine protease (SP) and lipase signaling pathways to regulate the development and reproduction as well as the decreasing of the stress response in T. castaneum. Additionally, knockdown of Tclph suppressed IMD immunity pathways which likely modulated the effects of Tclph on stress response. Interestingly, CSPs, ESTs, CYPs, AOXs and BGs were significantly down-regulated in ds-Tclph larvae, implying that they cooperated with Tclph to reduce the activity of cellular metabolism system. FMOs was up-regulated in ds-Tclph insects suggested it may be involved in detoxifying alkaloid of insect metabolism system. These results implied that Tclph participated in phase 0, I and II cellular detoxification. Furthermore, RNAi against Tclph increased larval susceptibility to carbamates and organophosphates insecticides, supporting that Tclph was indeed involved into the insecticide susceptibility in T. castaneum.
Genetica – Springer Journals
Published: May 24, 2018
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