title: Comprehensive maps of Drosophila higher olfactory centers: spatially segregated fruit and pheromone representation.
abstract: In Drosophila, approximately 50 classes of olfactory receptor neurons (ORNs) send axons to 50 corresponding glomeruli in the antennal lobe. Uniglomerular projection neurons (PNs) relay olfactory information to the mushroom body (MB) and lateral horn (LH). Here, we combine single-cell labeling and image registration to create high-resolution, quantitative maps of the MB and LH for 35 input PN channels and several groups of LH neurons. We find (1) PN inputs to the MB are stereotyped as previously shown for the LH; (2) PN partners of ORNs from different sensillar groups are clustered in the LH; (3) fruit odors are represented mostly in the posterior-dorsal LH, whereas candidate pheromone-responsive PNs project to the anterior-ventral LH; (4) dendrites of single LH neurons each overlap with specific subsets of PN axons. Our results suggest that the LH is organized according to biological values of olfactory input.
authors: Department of Biological Sciences, Stanford University, Stanford, CA 94305, USA. gsxej2@cam.ac.uk
authors: Gregory S X E
authors: GS
authors: Jefferis
authors: Christopher J
authors: CJ
authors: Potter
authors: Alexander M
authors: AM
authors: Chan
authors: Elizabeth C
authors: EC
authors: Marin
authors: Torsten
authors: T
authors: Rohlfing
authors: Calvin R
authors: CR
authors: Maurer
authors: Liqun
authors: L
authors: Luo
mesh_terms: D000818:Animals; D001921:Brain / Q000033:anatomy & histology / Q000502:physiology; D001931:Brain Mapping; D004330:Drosophila / Q000033:anatomy & histology* / Q000502:physiology*; D005260:Female; D005638:Fruit; D008297:Male; D024521:Mushroom Bodies / Q000502:physiology*; D009812:Odorants; D009833:Olfactory Pathways / Q000502:physiology; D018034:Olfactory Receptor Neurons / Q000502:physiology*; D010675:Pheromones; D017729:Presynaptic Terminals / Q000502:physiology; D012727:Sex Characteristics; D012903:Smell / Q000502:physiology; D013569:Synapses / Q000502:physiology
chemical_list: D010675:Pheromones