FB2025_05 , released December 11, 2025
FB2025_05 , released December 11, 2025
CV Term Report
Help Close All Open All
General Information
Term bitter-sensing neuron of labellar taste bristle ID (Ontology) FBbt:00048152 (Fly Anatomy)
Definition Gustatory receptor neuron of the labellum that responds to bitter stimuli and innervates a bitter-sensitive (short or intermediate) taste bristle. All of these cells express Gr66a, usually in combination with Gr32a, Gr33a and Gr89a (Weiss et al., 2011). Some of them also respond to high, aversive concentrations of salts (Liman et al., 2014; Freeman and Dahanukar, 2015; Jaeger et al., 2018). A subset also express TRPA1 and respond to hydrogen peroxide (Guntur et al., 2017).[ FlyBase:FBrf0212834 FlyBase:FBrf0229299 FlyBase:FBrf0229608 FlyBase:FBrf0234674 FlyBase:FBrf0240353 FlyBase:FBrf0248270 ]
Also Known As "bitter-sensing neuron of the labellum" ; "Gr66a neuron of the labellum" ; "labellar taste bristle type B gustatory receptor neuron" (for all, see Synonyms field below)
Comment
Links to External Ontologies
VFB:FBbt_00048152
Annotations
Records annotated with this term OR any of its CHILD TERMS
Records annotated with this exact term (annotations to child terms are NOT included)
Data Class Field Records
Alleles (FBal)  PHENOTYPE_MANIFEST_IN       2
Insertions (FBti)  EXPRESSION_STAGE_TISSUE_POSITION       1
Insertions (FBti)  PHENOTYPE_MANIFEST_IN       2
show Full annotation statements including this term (annotations to child terms are NOT included), and relevant FlyBase records
 Full annotation statements 
Relevant FlyBase reports
 Alleles  Insertions Constructs
 bitter-sensing neuron of labellar taste bristle (all annotations which use CV term, excluding "NOT" statements)       2      6      3      1
Spanning Tree (Parents/Children)
Only view relationship: 
labellar taste bristle sensory neuron
 |__labellar taste bristle chemosensory neuron__
high salt/bitter-sensing neuron                 |
 |__bitter-sensing neuron_______________________|
gustatory receptor neuron of the labellum       |
 |__labellar taste bristle chemosensory neuron__|
                                                bitter-sensing neuron of labellar taste bristle  15 rec.
                                                 |__broad bitter-sensing neuron of the labellum S-a 1 rec.
                                                 |__broad bitter-sensing neuron of the labellum S-b 2 rec.
                                                 |__narrow bitter-sensing neuron of the labellum I-a 1 rec.
                                                 |__narrow bitter-sensing neuron of the labellum I-b
Spanning Tree View Settings
Parents/Children
View Depth
Show hierarchy levels: for parents, for children
hide Relationships
Is a bitter-sensing neuron
labellar taste bristle chemosensory neuron
Part of
hide Synonyms & Secondary IDs
Synonyms
  • "bitter-sensing neuron of the labellum" EXACT
    "Gr66a neuron of the labellum" EXACT
    "labellar taste bristle type B gustatory receptor neuron" EXACT[ FlyBase:FBrf0248270 ]
    "type B GRN of labellum" EXACT[ FlyBase:FBrf0248270 ]
Secondary IDs
hide External Crossreferences & Linkouts
FlyBrain_NDB:10381
VFB:FBbt_00048152