Effects of Niemann-Pick type C2 (NPC2) gene transcripts silencing on behavior of Varroa destructor and molecular changes in the putative olfactory gene networks
2022
Mani, Kannan | Nganso, Beatrice T. | Rodin, Penina | Otmy, Assaf | Rafaeli, Ada | Soroker, Victoria
To understand the role of two Niemann-Pick type C2 (NPC2) transcripts, Vd40090 (NP1) and Vd74517 (NP5), in the chemosensing pathway of Varroa destructor, we evaluated the impact of NP5 silencing on mites behavior and compared the effect of silencing of either transcripts on the interaction between chemosensory transcripts. In contrast to silencing NP1, which reduced feeding and reproduction by the mite (Nganso et al., 2021), silencing of NP5 reduced significantly the host reaching ability, but it did not affect the feeding on nurse bee. However, silencing of either transcript changed dramatically the co-expression patterns among the putative chemosensory genes, binding proteins and receptors. The results suggest the role of gustatory receptors in the detection of long-range chemical cues in the chemosensory cascade of the Varroa mite.
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