All organisms continuously have to adapt their behavior according to changes in the environment in order to survive. Experience-driven changes in behavior are usually mediated and maintained by modifications in signaling within defined brain circuits. Given the simplicity of the larval brain of Drosophila and its experimental accessibility on the genetic and behavioral level, we analyzed if Drosophila neuropeptide F (dNPF) neurons are involved in classical olfactory conditioning. dNPF is an ortholog of the mammalian neuropeptide Y, a highly conserved neuromodulator that stimulates food-seeking behavior. We provide a comprehensive anatomical analysis of the dNPF neurons on the single-cell level. We demonstrate that artificial activation of dNPF neurons inhibits appetitive olfactory learning by modulating the sugar reward signal during acquisition. No effect is detectable for the retrieval of an established appetitive olfactory memory. The modulatory effect is based on the joint action of three distinct cell types that, if tested on the single-cell level, inhibit and invert the conditioned behavior. Taken together, our work describes anatomically and functionally a new part of the sugar reinforcement signaling pathway for classical olfactory conditioning in Drosophila larvae.
Pubmed ID: 26234537 RIS Download
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This monoclonal targets Mouse Drosophila fasciclin II
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View all literature mentionsDrosophila melanogaster with name w[*]; P{w[+mC]=UAS-ChR2.S}3 from BDSC.
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View all literature mentionsThis unknown targets IgG (H+L)
View all literature mentionsThis polyclonal targets GFP (FITC)
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View all literature mentionsThis monoclonal targets Green Fluorescent Protein (GFP)
View all literature mentionsThis polyclonal targets DsRed
View all literature mentions