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  Elucidating the neuronal architecture of olfactory glomeruli in the Drosophila antennal lobe

Grabe, V., Baschwitz, A., Dweck, H., Lavista Llanos, S., Hansson, B. S., & Sachse, S. (2016). Elucidating the neuronal architecture of olfactory glomeruli in the Drosophila antennal lobe. Cell Reports, 16, 3401-3413. doi:10.1016/j.celrep.2016.08.063.

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http://dx.doi.org/10.1016/j.celrep.2016.08.063 (Publisher version)
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 Creators:
Grabe, Veit1, Author              
Baschwitz, Amelie1, 2, Author              
Dweck, Hany2, 3, Author              
Lavista Llanos, Sofia4, Author              
Hansson, Bill S.1, Author              
Sachse, Silke1, 5, Author              
Affiliations:
1Department of Evolutionary Neuroethology, Prof. B. S. Hansson, MPI for Chemical Ecology, Max Planck Society, ou_421894              
2IMPRS on Ecological Interactions, MPI for Chemical Ecology, Max Planck Society, Jena, DE, ou_421900              
3Department of Neuroethology, Prof. B. S. Hansson, MPI for Chemical Ecology, Max Planck Society, ou_421894              
4Research Group Dr. M. Stensmyr, Molecular Biology of Olfaction, Department of Neuroethology, Prof. B. S. Hansson, MPI for Chemical Ecology, Max Planck Society, ou_421915              
5Research Group Dr. S. Sachse, Olfactory Coding, MPI for Chemical Ecology, Max Planck Society, ou_421914              

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 Abstract: Olfactory glomeruli are morphologically conserved spherical compartments of the olfactory system, distinguishable solely by their chemosensory repertoire, anatomical position, and volume. Little is known, however, about their numerical neuronal composition. We therefore characterized their neuronal architecture and correlated these anatomical features with their functional properties in Drosophila melanogaster.We quantitatively mapped all olfactory sensory neurons (OSNs) innervating each glomerulus, including sexually dimorphic distributions. Our data reveal the impact of OSN number on glomerular dimensions and demonstrate yet unknown sex-specific differences in several glomeruli. Moreover, we quantified uniglomerular projection neurons for each glomerulus, which unraveled a glomerulus-specific numerical innervation. Correlation between morphological features and functional specificity showed that glomeruli innervated by narrowly tuned OSNs seem to possess a larger number of projection neurons and are involved in less lateral processing than glomeruli targeted by broadly tuned OSNs. Our study demonstrates that the neuronal architecture of each glomerulus encoding crucial odors is unique.

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 Dates: 2016-0820162016-09
 Publication Status: Published in print
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 Identifiers: Other: SAC010
DOI: 10.1016/j.celrep.2016.08.063
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Title: Cell Reports
Source Genre: Journal
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Publ. Info: Oxford : Published for the Royal Entomological Society by Blackwell Scientific Publications
Pages: - Volume / Issue: 16 Sequence Number: - Start / End Page: 3401 - 3413 Identifier: ISSN: 0962-1075
CoNE: https://pure.mpg.de/cone/journals/resource/954925580118