FB2026_03 , released September 17, 2026
CV Term Report
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Term bitter-sensing neuron of the leg ID (Ontology) FBbt:00048209 (Fly Anatomy)
Definition Sensory neuron that responds to bitter stimuli and innervates a taste bristle in the leg. These are characterized by expression of gustatory receptors Gr33a, Gr39a.a, Gr58c and Gr89a (Ling et al., 2014).[ FlyBase:FBrf0225125 ]
CommentGr expression determined by an exhaustive Gr-GAL4 expression screen of all Gr genes (although Gr68a expression could not be reliably mapped) in neurons of all tarsal taste bristles of all legs (Ling et al., 2014).
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VFB:FBbt_00048209
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Data ClassFieldDirect annotations
Insertions (FBti)EXPRESSION_STAGE_TISSUE_POSITION
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 bitter-sensing neuron of the leg (all annotations which use CV term, excluding "NOT" statements)
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leg taste bristle chemosensory neuron
 |__leg taste bristle ascending tarsal chemosensory neuron__
adult ascending neuron                                      |
 |__leg taste bristle ascending tarsal chemosensory neuron__|
high salt/bitter-sensing neuron                             |
 |__bitter-sensing neuron___________________________________|
                                                            bitter-sensing neuron of the leg  4 rec.
                                                             |__bitter-sensing neuron of mesothoracic leg tarsal taste bristle 4s
                                                             |__bitter-sensing neuron of mesothoracic leg tarsal taste bristle 5b
                                                             |__bitter-sensing neuron of metathoracic leg tarsal taste bristle 4s
                                                             |__bitter-sensing neuron of metathoracic leg tarsal taste bristle 5b
                                                             |__bitter-sensing neuron of prothoracic leg tarsal taste bristle 4c
                                                             |__bitter-sensing neuron of prothoracic leg tarsal taste bristle 4s
                                                             |__bitter-sensing neuron of prothoracic leg tarsal taste bristle 5b
                                                             |__bitter-sensing neuron of prothoracic leg tarsal taste bristle 5s
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Is a leg taste bristle ascending tarsal chemosensory neuron
bitter-sensing neuron
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FlyBrain_NDB:10381
VFB:FBbt_00048209