The short neuropeptide F modulates olfactory sensitivity of Bactrocera dorsalis upon starvation. (May 2017)

• Record Type: Journal Article
• Authors: Jiang, Hong-Bo; Gui, Shun-Hua; Xu, Li; Pei, Yu-Xia; Smagghe, Guy; Wang, Jin-Jun
• Is Part Of: Journal of insect physiology. Volume 99(2017:Apr.)
• Page Start: 78
• Page End: 85
• Publication Date: 2017-05
• Subjects: Oriental fruit fly -- Short neuropeptide F -- G-protein coupled-receptor -- Olfaction sensing -- Starvation; Insects -- Physiology -- Periodicals; Insectes -- Physiologie -- Périodiques; Insects -- Physiology; Periodicals; 571.157
• DOI: 10.1016/j.jinsphys.2017.03.012
• Languages: English
• ISSNs: 0022-1910

Abstract

Graphical abstract: Highlights: The sNPF and its receptor were cloned in Bactrocera dorsalis . Both BdsNPF and BdsNPFR displayed starvation-induced expression patterns. The starved flies showed an enhanced olfactory sensitivity. Silencing BdsNPF in starved flies, the enhanced olfactory sensitivity was reversed. Abstract: The insect short neuropeptide F (sNPF) family has been shown to modulate diverse physiological processes, such as feeding, appetitive olfactory behavior, locomotion, sleep homeostasis and hormone release. In this study, we identified the sNPF (BdsNPF) and its receptor (BdsNPFR) in an important agricultural pest, the oriental fruit fly Bactrocera dorsalis (Hendel). Afterwards, the receptor cDNA was functionally expressed in Chinese hamster ovary cell lines. Activation of BdsNPFR by sNPF peptides caused an increase in intracellular calcium ions, with a 50% effective concentration values at the nanomolar level. As indicated by qPCR, the BdsNPF and BdsNPFR transcripts were mainly detected in the central nervous system and antennae, and they showed significantly starvation-induced expression patterns. Furthermore, we found that the starved flies had an increased electroantennogram response compared to the normally fed flies. However, this enhanced olfactory sensitivity was reversed when we decreased the expression of BdsNPF by double-stranded RNA injection in adults. We concluded that sNPF plays an important role in modulating the olfactory sensitivity of B. dorsalis upon starvation. Our results will facilitate the understanding of the regulation of early olfactory processing in B. dorsalis .