FB2025_05 , released December 11, 2025
FB2025_05 , released December 11, 2025
CV Term Report
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General Information
Term gustatory receptor neuron of the dorsal organ ID (Ontology) FBbt:00100145 (Fly Anatomy)
Definition Gustatory receptor neuron that has its cell body in the dorsal organ ganglion and innervates the dorsal organ on the surface of the larval head (Python and Stocker, 2002). Its axon projects via the antennal nerve (Python and Stocker, 2002). Two of these cells per dorsal organ express Gr2a and Gr28a (Kwon et al., 2011). Projections from at least some of these neurons innervate subesophageal ganglion area 3 (Colomb et al., 2007).[ FlyBase:FBrf0134489 FlyBase:FBrf0147119 FlyBase:FBrf0201176 FlyBase:FBrf0216529 ]
Also Known As "DO class"
Comment DO has 11 sensory neurons in the base region (peripheral to the dome), which are mainly thought to be thermo-/mechano-sensory (Komarov and Sprecher, 2022 - FBrf0251522). The most likely two candidates for gustatory sensilla lack a terminal pore in the L1, so Richter et al. (2024) (doi:10.7554/eLife.91155.2) question whether the Gr2a/Gr28a neurons are gustatory.
Links to External Ontologies
VFB:FBbt_00100145
Annotations
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Data Class Field Records
Insertions (FBti)  EXPRESSION_STAGE_TISSUE_POSITION       1
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 Genes Insertions Constructs
 gustatory receptor neuron of the dorsal organ (all annotations which use CV term, excluding "NOT" statements)       1      1     10
Spanning Tree (Parents/Children)
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gustatory receptor neuron
 |__embryonic/larval gustatory receptor neuron_____________
gustatory system neuron                                    |
 |__larval external sense organ gustatory receptor neuron__|
larval external sense organ sensory neuron                 |
 |__dorsal organ sensory neuron____________________________|
 |__larval external sense organ gustatory receptor neuron__|
embryonic/larval sensory neuron                            |
 |__embryonic/larval gustatory receptor neuron_____________|
                                                           gustatory receptor neuron of the dorsal organ  12 rec.
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Is a dorsal organ sensory neuron
larval external sense organ gustatory receptor neuron
embryonic/larval gustatory receptor neuron
Part of peripheral nervous system
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Synonyms
  • "DO class" EXACT[ FlyBase:FBrf0216529 ]
    "gustatory receptor neuron A1 of the dorsal organ group" NARROW
    "gustatory receptor neuron A2 of the dorsal organ group" NARROW
Secondary IDs
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VFB:FBbt_00100145