Activity of Defined Mushroom Body Output Neurons Underlies Learned Olfactory Behavior in Drosophila

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2015
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Owald, David
Felsenberg, Johannes
Talbot, Clifford B.
Das, Gaurav
Perisse, Emmanuel
Waddell, Scott
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Neuron. 2015, 86(2), pp. 417-427. ISSN 0896-6273. eISSN 1097-4199. Available under: doi: 10.1016/j.neuron.2015.03.025
Zusammenfassung

During olfactory learning in fruit flies, dopaminergic neurons assign value to odor representations in the mushroom body Kenyon cells. Here we identify a class of downstream glutamatergic mushroom body output neurons (MBONs) called M4/6, or MBON-β2β'2a, MBON-β'2mp, and MBON-γ5β'2a, whose dendritic fields overlap with dopaminergic neuron projections in the tips of the β, β', and γ lobes. This anatomy and their odor tuning suggests that M4/6 neurons pool odor-driven Kenyon cell synaptic outputs. Like that of mushroom body neurons, M4/6 output is required for expression of appetitive and aversive memory performance. Moreover, appetitive and aversive olfactory conditioning bidirectionally alters the relative odor-drive of M4β' neurons (MBON-β'2mp). Direct block of M4/6 neurons in naive flies mimics appetitive conditioning, being sufficient to convert odor-driven avoidance into approach, while optogenetically activating these neurons induces avoidance behavior. We therefore propose that drive to the M4/6 neurons reflects odor-directed behavioral choice.

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Fachgebiet (DDC)
570 Biowissenschaften, Biologie
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Drosophila, learning, memory, glutamate, optogenetics, behavior, mushroom body
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ISO 690OWALD, David, Johannes FELSENBERG, Clifford B. TALBOT, Gaurav DAS, Emmanuel PERISSE, Wolf HUETTEROTH, Scott WADDELL, 2015. Activity of Defined Mushroom Body Output Neurons Underlies Learned Olfactory Behavior in Drosophila. In: Neuron. 2015, 86(2), pp. 417-427. ISSN 0896-6273. eISSN 1097-4199. Available under: doi: 10.1016/j.neuron.2015.03.025
BibTex
@article{Owald2015Activ-30898,
  year={2015},
  doi={10.1016/j.neuron.2015.03.025},
  title={Activity of Defined Mushroom Body Output Neurons Underlies Learned Olfactory Behavior in Drosophila},
  url={http://www.sciencedirect.com/science/article/pii/S0896627315002214},
  number={2},
  volume={86},
  issn={0896-6273},
  journal={Neuron},
  pages={417--427},
  author={Owald, David and Felsenberg, Johannes and Talbot, Clifford B. and Das, Gaurav and Perisse, Emmanuel and Huetteroth, Wolf and Waddell, Scott}
}
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