FB2024_03 , released June 25, 2024
Allele: Dmel\Tbcd1
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General Information
Symbol
Dmel\Tbcd1
Species
D. melanogaster
Name
FlyBase ID
FBal0302633
Feature type
allele
Associated gene
Associated Insertion(s)
Carried in Construct
Key Links
Allele class
Mutagen
    Nature of the Allele
    Allele class
    Mutagen
    Progenitor genotype
    Cytology
    Description

    A ~9kb long DNA fragment has been inserted into the coding sequence of the TBCD locus.

    Mutations Mapped to the Genome
    Curation Data
    Type
    Location
    Additional Notes
    References
    Variant Molecular Consequences
    Associated Sequence Data
    DNA sequence
    Protein sequence
     
    Expression Data
    Reporter Expression
    Additional Information
    Statement
    Reference
     
    Marker for
    Reflects expression of
    Reporter construct used in assay
    Human Disease Associations
    Disease Ontology (DO) Annotations
    Models Based on Experimental Evidence ( 1 )
    Modifiers Based on Experimental Evidence ( 1 )
    Comments on Models/Modifiers Based on Experimental Evidence ( 0 )
     
    Disease-implicated variant(s)
     
    Phenotypic Data
    Phenotypic Class
    Phenotype Manifest In
    Detailed Description
    Statement
    Reference

    TBCD1 mutant olfactory projection neuron single-cell MARCM clones show a range of axon (from a short or missing dorsal axon branch at the lateral horn to extremely short axon) as well as dendrite (reduced in situ dendritic branching, ectopic branches or combination of the two) morphological defects.

    The dendrites of homozygous TBCD1 mutant DL1 olfactory projection neurons (PNs) target not only the DL1 glomerulus, but also additional glomeruli. Although the dendrites of TBCD1 DL1 PNs target the DL1 glomerulus, the number of dendrites innervation the DL1 glomerulus is decreased and there are ectopic arborizations between the cell body and DL1 glomerulus. The axons do not reach the mushroom body and the lateral horn. Ectopic dendrite arborization is first observed at 48 hours after puparium formation (APF). There are no detectable differences in axon morphology until 72 hours APF, but 1 day after eclosion the dorsal branch in the lateral horn is lost and the PN axons have developed swellings typical of axon degeneration.

    In wild type DL1 projection neuron clones generated in a TBCD1/+ background an increased number of dendrites spill over to the outside of the antennal lobe compared to controls

    External Data
    Interactions
    Show genetic interaction network for Enhancers & Suppressors
    Phenotypic Class
    Enhanced by
    Suppressed by
    NOT suppressed by
    NOT Enhancer of
    Statement
    Reference
    Suppressor of
    Statement
    Reference
    Other
    Phenotype Manifest In
    Enhanced by
    Suppressed by
    NOT suppressed by
    NOT Enhancer of
    Suppressor of
    Other
    Additional Comments
    Genetic Interactions
    Statement
    Reference

    Expression of dsScer\UAS.cTa under the control of Scer\GAL4GH146 does not rescue the defects seen in TBCD1 mutant DL1 projection neuron clones.

    Expression of TbcedsRNA.Scer\UAS.cJa under the control of Scer\GAL4GH146 enhances the frequency of dendrite defects seen in TBCD1 mutant DL1 projection neuron clones.

    Dscam105518 DL1 projection neuron mutant clones generated in a TBCD1/+ background have an increased number of dendrites that spill over to the outside of the antennal lobe compared to wild type clones in a TBCD1/+ mutant background. The loss of the dorsal branch seen in Dscam105518 mutant clones alone is not enhanced in a TBCD1 mutant background.

    Expression of CG11723Scer\UAS.cOa under the control of Scer\GAL4GH146 does not suppress the defects seen in TBCD1 mutant DL1 projection neuron clones.

    Expression of CG4259Scer\UAS.cOa under the control of Scer\GAL4GH146 does not suppress the defects seen in TBCD1 mutant DL1 projection neuron clones.

    A TBCD1/+ mutant background partially suppresses the loss of mushroom body α and β lobes seen in flies expressing Dscam1exon17.2.Scer\UAS.T:Avic\GFP under the control of Scer\GAL4ey-OK107.

    Xenogenetic Interactions
    Statement
    Reference

    The axonal as well as dendritic morphological defects observed in TBCD1 mutant olfactory projection neurons MARCM clones can be partially rescued by expression of Hsap\TBCDScer\UAS.cMa under the control of Scer\GAL4GH146, whereas the expression of any of the following Hsap\TBCDM387R.Scer\UAS, Hsap\TBCDY760stop.Scer\UAS or Hsap\TBCDR772C.Scer\UAS has significantly reduced rescue ability.

    Complementation and Rescue Data
    Comments

    Expression of TBCDScer\UAS.cOa under the control of Scer\GAL4GH146 rescues the defects seen in TBCD1 mutant DL1 projection neuron clones.

    TBCD1 fails to complement P{wHy}DG14207.

    Images (0)
    Mutant
    Wild-type
    Stocks (0)
    Notes on Origin
    Discoverer
    External Crossreferences and Linkouts ( 0 )
    Synonyms and Secondary IDs (3)
    Reported As
    Symbol Synonym
    TBCD1
    Tbcd1
    Name Synonyms
    Secondary FlyBase IDs
      References (2)