FB2024_03 , released June 25, 2024
Allele: Dmel\RetC168
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General Information
Symbol
Dmel\RetC168
Species
D. melanogaster
Name
FlyBase ID
FBal0216977
Feature type
allele
Associated gene
Associated Insertion(s)
Carried in Construct
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Mutagen
    Nature of the Allele
    Mutagen
    Progenitor genotype
    Associated Insertion(s)
    Cytology
    Description
    Mutations Mapped to the Genome
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    Variant Molecular Consequences
    Associated Sequence Data
    DNA sequence
    Protein sequence
     
    Expression Data
    Reporter Expression
    Additional Information
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    Marker for
    Reflects expression of
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    Human Disease Associations
    Disease Ontology (DO) Annotations
    Models Based on Experimental Evidence ( 0 )
    Disease
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    Disease
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    Comments on Models/Modifiers Based on Experimental Evidence ( 0 )
     
    Disease-implicated variant(s)
     
    Phenotypic Data
    Phenotypic Class
    Phenotype Manifest In
    Detailed Description
    Statement
    Reference

    Homozygous RetC168 mutant larvae exhibit class IV dendritic arborizing (C4da) neuron dendrite patterning defects, resulting in out of plane crossing of isoneuronal branches.

    More severe dendritic patterning defects are seen in RetC168/Df(2L)BSC312 mutant larvae. The C4da neurons do not show a significant reduction in dendrite length, but display excessive crossings of isoneuronal dendrites outside of their normal 2D growth plane and reduced dendritic field coverage. Large stretches of dendrites, in particular terminal arbors, are detached from the ECM and enclosed by the epidermis. These dendrite defects are seen from 48hr after egg laying. The C4da neurons also display disrupted dendritic dynamics compared to wild type, and aberrant F-actin localisation, with dendrites displaying increased proximal, but reduced distal, F-actin levels. Abnormal accumulation of F-Actin is seen in aberrant crossing RetC168/Df(2L)BSC312 mutant dendrites and many terminal dendrites exhibit lower levels of F-actin than controls.

    External Data
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    Additional Comments
    Genetic Interactions
    Statement
    Reference

    RetC168 mewM6 transheterozygous third instar larvae exhibit defects in class IV dendritic arborizing neuron dendrite crossing and a substantial loss of dendrite-ECM interaction. No phenotypes are observed in either heterozygote alone.

    RetC168 mys1 transheterozygous third instar larvae exhibit defects in class IV dendritic arborizing neuron dendrite crossing and a substantial loss of dendrite-ECM interaction. No phenotypes are observed in either heterozygote alone.

    Co-expression of mysScer\UAS.cDa and mewScer\UAS.cMBa in class IV dendritic arborizing neurons under the control of Scer\GAL4ppk.PH partially suppresses the dendrite growth seen in RetC168/Df(2L)BSC312 mutant larvae and completely suppresses the loss of dendrite-ECM interaction. The reduction in dendritic field coverage is not suppressed.

    RetC168 Rac1J11 transheterozygous third instar larvae exhibit defects in class IV dendritic arborizing neuron dendrite-ECM interaction. The phenotype is not observed in either heterozygote alone.

    Xenogenetic Interactions
    Statement
    Reference
    Complementation and Rescue Data
    Comments

    Expression of RetScer\UAS.T:Disc\RFP-mCherry in class IV dendritic arborizing neurons under the control of Scer\GAL4ppk.PH rescues the dendrite growth and crossing phenotypes seen in RetC168/Df(2L)BSC312 mutant larvae.

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    Synonyms and Secondary IDs (1)
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      References (3)