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Learning-dependent plasticity in the antennal lobe improves discrimination and recognition of odors in the honeybee

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Abstract

Honeybees are extensively used to study olfactory learning and memory processes thanks to their ability to discriminate and remember odors and because of their advantages for optophysiological recordings of the circuits involved in memory and odor perception. There are evidences that the encoding of odors in areas of primary sensory processing is not rigid, but undergoes changes caused by olfactory experience. The biological meaning of these changes is focus of intense discussions. Along this review, we present evidences of plasticity related to different forms of learning and discuss its function in the context of olfactory challenges that honeybees have to solve. So far, results in honeybees are consistent with a model in which changes in early olfactory processing contributes to the ability of an animal to recognize the presence of relevant odors and facilitates the discrimination of odors in a way adjusted to its own experience.

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Abbreviations

AL:

Antennal lobe

ORNs:

Olfactory receptor neurons

LNs:

Local neurons

PNs:

Projection neurons

MBs:

Mushroom bodies

LH:

Lateral horn

lALT:

Lateral antennal lobe tract

mALT:

Medial antennal lobe tract

mlALT:

Mediolateral antennal lobe tract

OA:

Octopamine

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Acknowledgments

Authors thank two anonymous reviewers for insightful comments and suggestions.

Funding

The authors have been supported by grants from ANPCyT: Agencia Nacional de Promoción Cientifica y Tecnica, Argentina: PICT 2016-1755 to EM. ANPCyT PICT 2017-1285, CONICET and University of Buenos Aires to MK. ANPCyT PICT 2017-2284, CONICET and University of Buenos Aires to FL.

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Correspondence to Fernando Locatelli.

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Marachlian, E., Klappenbach, M. & Locatelli, F. Learning-dependent plasticity in the antennal lobe improves discrimination and recognition of odors in the honeybee. Cell Tissue Res 383, 165–175 (2021). https://doi.org/10.1007/s00441-020-03396-2

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  • DOI: https://doi.org/10.1007/s00441-020-03396-2

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