FB2024_03 , released June 25, 2024
Allele: Dmel\Dys8-2
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General Information
Symbol
Dmel\Dys8-2
Species
D. melanogaster
Name
FlyBase ID
FBal0244097
Feature type
allele
Associated gene
Associated Insertion(s)
Carried in Construct
Key Links
Allele class
Nature of the Allele
Allele class
Progenitor genotype
Cytology
Description

Imprecise excision of P{EP}DysEP3397 resulting in a small deletion.

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
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Marker for
Reflects expression of
Reporter construct used in assay
Human Disease Associations
Disease Ontology (DO) Annotations
Models Based on Experimental Evidence ( 1 )
Disease
Evidence
References
Modifiers Based on Experimental Evidence ( 0 )
Disease
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References
Comments on Models/Modifiers Based on Experimental Evidence ( 1 )
 

Dys8-2 exhibits muscular dystrophy-like phenotypes when in combination with Df(3R)Dl-X43

Disease-implicated variant(s)
 
Phenotypic Data
Phenotypic Class
Phenotype Manifest In
Detailed Description
Statement
Reference

Dys8-2/Df(3R)Dl-X43 mutant flies exhibit mild age-dependent indirect flight muscle degeneration.

With age, Dys8-2/Df(3R)Dl-X43 flies exhibit shorter diastolic

intervals, resulting in increased heart rates and fewer asystoles, and produce a more regular heartbeat than wild-type controls.

Throughout most of their adult life, Dys8-2/Df(3R)Dl-X43 flies have a significantly wider diastolic and systolic diameter, accompanied (from 3 weeks onwards) by a reduced fractional shortening compared to controls.

Dys8-2/Df(3R)Dl-X43 mutant ovaries show oocyte polarity defects.

Dys8-2/Df(3R)Dl-X43 mutant flies show comparable climbing ability at the beginning of adult life to control flies. However, the ability of these animals to climb declines significantly faster over time compared to controls. Animals exhibit mostly normal muscle architecture at 3 days after eclosion. By 12 days, age-dependent muscle degeneration is observed including loss of muscle fibre organisation, vacuolisation and the absence of some muscles.

Retinal photoreceptor cells are not elongated in Dys8-2/Df(3R)Dl-X43 mutant eyes. In third instar larval eye discs, neuronal projections from photoreceptor neurons to the brain optic lobes are disturbed. Axons stop irregularly, making gaps in the normal termination zone of the lamina plexus, deviating from the path and bundling aberrantly.

Dys8-2/DysE6 mutant third instar larval eye discs develop aberrant neuronal projections from photoreceptor neurons to the brain optic lobes. Axons stop irregularly, making gaps in the normal termination zone of the lamina plexus, deviating from the path and bundling aberrantly. This axon projection phenotype not observed in Dys8-2/+ mutant discs.

External Data
Interactions
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Phenotypic Class
Phenotype Manifest In
Additional Comments
Genetic Interactions
Statement
Reference

Dg323/+; Dys8-2/+ double heterozygous oocytes show significant polarity defects indistinguishable from Dg323/Dg323 or Dys8-2/Df(3R)Dl-X43 mutants.

Dg323/+; Dys8-2/+ double heterozygous mutant third instar larval eye discs show disrupted neuronal projections from photoreceptor neurons to the brain optic lobes, showing breaks in the lamina surface.

dock13421/+; Dys8-2/+ or dock04723/+; Dys8-2/+ double heterozygous mutant third instar larval eye discs do not show disrupted axon targeting from photoreceptor neurons to the brain optic lobes.

InR34/Dys8-2 or Dys8-2/InRex52.1 double heterozygous mutant third instar larval eye discs do not show disrupted axon targeting from photoreceptor neurons to the brain optic lobes.

Xenogenetic Interactions
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Complementation and Rescue Data
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Mutant
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Synonyms and Secondary IDs (3)
Reported As
Name Synonyms
Secondary FlyBase IDs
    References (3)