Differential combinatorial coding of pheromones in two olfactory subsystems of the honey bee brain

The Journal of Neuroscience : the Official Journal of the Society for Neuroscience
Julie CarcaudJean-Christophe Sandoz

Abstract

Neural coding of pheromones has been intensively studied in insects with a particular focus on sex pheromones. These studies favored the view that pheromone compounds are processed within specific antennal lobe glomeruli following a specialized labeled-line system. However, pheromones play crucial roles in an insect's life beyond sexual attraction, and some species use many different pheromones making such a labeled-line organization unrealistic. A combinatorial coding scheme, in which each component activates a set of broadly tuned units, appears more adapted in this case. However, this idea has not been tested thoroughly. We focused here on the honey bee Apis mellifera, a social insect that relies on a wide range of pheromones to ensure colony cohesion. Interestingly, the honey bee olfactory system harbors two central parallel pathways, whose functions remain largely unknown. Using optophysiological recordings of projection neurons, we compared the responses of these two pathways to 27 known honey bee pheromonal compounds emitted by the brood, the workers, and the queen. We show that while queen mandibular pheromone is processed by l-ALT (lateral antennal lobe tract) neurons and brood pheromone is mainly processed by m-ALT (m...Continue Reading

Citations

Feb 7, 2016·The Journal of Comparative Neurology·Antoine CoutoJean-Christophe Sandoz
Aug 19, 2015·Frontiers in Physiology·Martin F BrillWolfgang Rössler
Oct 18, 2016·Frontiers in Neuroanatomy·Hanna ZwakaJürgen Rybak
Jan 31, 2018·The Journal of Experimental Biology·Natacha RossiMartin Giurfa
Nov 18, 2016·The Journal of Experimental Biology·Morgane NouvianMartin Giurfa
Apr 28, 2020·The Journal of Comparative Neurology·Jens HabensteinWolfgang Rössler
Apr 27, 2017·Natural Product Reports·E MolloM T Ghiselin
Jul 1, 2017·Frontiers in Neuroanatomy·Antoine CoutoJean-Christophe Sandoz
Aug 31, 2017·Scientific Reports·David BaracchiMartin Giurfa
Dec 7, 2017·Journal of Chemical Ecology·Nicolas BraseroPierre Rasmont
Mar 21, 2019·Frontiers in Psychology·Lesley J Rogers, Giorgio Vallortigara
May 23, 2017·Frontiers in Neural Circuits·Hidehiro WatanabeFumio Yokohari
Jan 15, 2021·Cell and Tissue Research·Marco Paoli, Giovanni C Galizia
Jan 16, 2021·Cell and Tissue Research·Julia MarietteJean-Christophe Sandoz
May 3, 2021·The European Journal of Neuroscience·Louise BesteaMaria Gabriela de Brito Sanchez
May 28, 2021·Scientific Reports·Marcel MertesJean-Christophe Sandoz

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