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General Information
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| Term |
transmedullary neuron Tm9 |
ID (Ontology) |
FBbt:00003797 (Fly Anatomy) |
| Definition |
Transmedullary narrow field neuron that has most of its dendritic arborization in medulla layers M2 and M3, with some extensions into M1, M4 and M5 (Gao et al., 2008; Ting et al., 2014), and presynapses in M3 (Gao et al., 2008). Its axon follows the posterior edge of its cognate medulla column (Ting et al., 2014), then crosses in the second optic chiasma and terminates in lobula layer 1 (Fischbach and Dittrich, 1989; Ting et al., 2014), where it outputs to T5 neurons (Shinomiya et al., 2014). It is a cholinergic neuron (Gao et al., 2008; Shinomiya et al., 2014). It expresses the transcription factor sim (Ozel et al., 2021). There is usually one of these cells per optic column (Nern et al., 2025).[ FlyBase:FBrf0049410 FlyBase:FBrf0204652 FlyBase:FBrf0206213 FlyBase:FBrf0224196 FlyBase:FBrf0225094 FlyBase:FBrf0247762 FlyBase:FBrf0262545 ] |
| Also Known As |
"Tm9" |
| Comment |
Neurotransmitter was assessed using a cha-GAL4DBD driver (Gao et al., 2008), single-cell transcript profiling and immunohistochemistry (Shinomiya et al., 2014). Connectivity in the lobula was assessed by serial section electron microscopy of a single column (Shinomiya et al., 2014). |
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Links to External Ontologies
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VFB:FBbt_00003797
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Annotations
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Records annotated with this term OR any of its CHILD TERMS
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Records annotated with this exact term (annotations to child terms are NOT included)
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| Data Class | Field | Records |
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| Alleles (FBal) | PHENOTYPE_MANIFEST_IN | 3 | | Insertions (FBti) | EXPRESSION_STAGE_TISSUE_POSITION | 6 | | Insertions (FBti) | PHENOTYPE_MANIFEST_IN | 2 |
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Full annotation statements including this term (annotations to child terms are NOT included), and relevant FlyBase records
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| Full annotation statements | Relevant FlyBase reports |
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| Alleles | | Genes | | Insertions | Constructs |
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transmedullary neuron Tm9 (all annotations which use CV term, excluding "NOT" statements) | 8 | 3 | 5 | 8 | 8 | 16 | transmedullary neuron Tm9 | P-stage | 3 | -- | -- | -- | 2 | -- |
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Relationships