ORN_DA2 FBbt_00067063
ORN_DA2
ID: FBbt_00067063
Adult olfactory receptor neuron (ORN) that expresses Or56a and Or33a (Stensmyr et al., 2012. Its dendrite transduces signals from antennal basiconic sensillum ab4 and it detects geosmin (via the Or56a receptor), which indicates the presence of harmful microbes (Stensmyr et al., 2012. Its axon innervates the DA2 glomerulus in the ipsilateral antennal lobe, then crosses the midline via the antennal commissure to innervate the contralateral antennal lobe glomerulus DA2 (Stocker et al., 1990; Stensmyr et al., 2012. It expresses sNPF (Carlsson et al., 2010. It develops from an Nab precursor (Benton et al., 2025. There are approximately 20 of these cells on each side (Benton et al., 2025. (Carlsson et al., 2010, Stensmyr et al., 2012, Hallem et al., 2004, Benton et al., 2025, Grabe et al., 2016, Fishilevich et al., 2005, Stocker et al., 1990, Couto et al., 2005)
Open in VFB 3D Browser →Classification
- adult neurosecretory neuron
- adult peptidergic neuron
- antennal olfactory receptor neuron of basiconic sensillum
- bilateral antennal lobe receptor neuron
- sNPF neuron
- sensory epithelial cell
Relationships
- capable_of_part_of: olfactory behavior
- develops from: antennal olfactory receptor neuron precursor Nab
- expresses: Or33a, Or56a
- fasciculates with: adult antennal lobe commissure
- has sensory dendrite in: antennal basiconic sensillum ab4
- sends synaptic output throughout: antennal lobe glomerulus DA2
Alternative Names
| Synonym | Scope | Reference |
|---|---|---|
| adult olfactory receptor neuron Or33a | related synonym | |
| adult olfactory receptor neuron Or56a | related synonym | |
| ORN_DA2 | related synonym | Berg et al., 2025, Bates et al., 2025, Schlegel et al., 2024, Scheffer et al., 2020 |
| adult ORN Or56a | exact synonym | |
| ORN_DA2 | exact synonym | VFB_SYMBOL |
| adult olfactory receptor neuron Or56a/33a | exact synonym | |
| ORN (Or56a) | exact synonym | 10409 |
| adult ORN Or56a/33a | exact synonym | |
| adult ORN Or33a | exact synonym | |
| adult olfactory receptor neuron DA2 | related synonym | |
| ORN ab4B | exact synonym | Nava Gonzales et al., 2021 |
Cross References
- ORN_DA2 on FlyBrain NeuronDB (10409)
- ORN_DA2 on DoOR (ab4B)
Downloads
Image files aligned to ORN_DA2_R (MaleCNS:269412):
Image files aligned to ORN_DA2_R (MaleCNS:218171):
Image files aligned to ORN_DA2:
Image files aligned to ORN_DA2:
Image files aligned to ORN_DA2:
Image files aligned to ORN_DA2:
Image files aligned to DA2 ORN #11 (FAFB:12024537):
Image files aligned to DA2 ORN #1 (FAFB:12013369):
Image files aligned to DA2 ORN #6 (FAFB:3802286):
Image files aligned to ORN_DA2: