FB2024_03 , released June 25, 2024
Allele: Dmel\salsf07849
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General Information
Symbol
Dmel\salsf07849
Species
D. melanogaster
Name
FlyBase ID
FBal0161776
Feature type
allele
Associated gene
Associated Insertion(s)
Carried in Construct
Key Links
Genomic Maps

Nature of the Allele
Progenitor genotype
Associated Insertion(s)
Cytology
Description
Allele components
Component
Use(s)
Mutations Mapped to the Genome
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 ( 0 )
Disease
Evidence
References
Modifiers Based on Experimental Evidence ( 0 )
Disease
Interaction
References
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 and salsf07849/Df(3R)M-Kx1 embryos fail to hatch from the egg case (100% penetrance) and show similar muscle defects.

Primary muscle cultures derived from myoblasts dissociated from homozygous mutant embryos have a reduced sarcomere length and myofibril width, but normal myofibril length compared to control cultures.

Stage 16 homozygous embryos have normal overall muscle morphology, and the number of nuclei in mutant muscles is comparable to that in wild type.

Muscles in late stage 17 mutant embryos have myofibrils with numerous short sarcomeres (they show an approximately 27% reduction in length compared to wild type). In addition, the mutant myofibrils are thin and split and are distributed along the lateral side of muscles. The thin filaments are significantly shorter in length than normal. The nuclei of the mutant muscles are localised more towards the muscle ends (wild-type muscles have even distributed nuclei).

The muscles of mutant larvae at 28-30 hours after egg laying contain many more sarcomeres than those of control larvae, but they are much shorter in length longitudinally compared to controls. Some of the mutant muscles show a complete disruption of myofibril morphology.

Peristaltic movement is detectable in later stage 17 mutant embryos, however, the mutant embryos have less frequent backward peristalsis than controls, and the vigour of their contraction is much reduced. At 28-30 hours after egg laying (the expected hatch time), the mutants show weak movement. They eventually die in the egg case within a day. If mutant animals are manually removed from the egg case, they are flaccid and immobile.

External Data
Interactions
Show genetic interaction network for Enhancers & Suppressors
Phenotypic Class
Enhancer of
Statement
Reference
Phenotype Manifest In
Enhancer of
Statement
Reference
NOT Enhancer of
Statement
Reference

salsf07849/sals[+] is a non-enhancer of indirect flight muscle cell phenotype of DAAMEx1

NOT Suppressor of
Statement
Reference

salsf07849/sals[+] is a non-suppressor of indirect flight muscle cell phenotype of DAAMEx1

Additional Comments
Genetic Interactions
Statement
Reference

The mild indirect muscle phenotype seen in DAAMEx1 mutants is not altered by salsf07849/+.

salsf07849 enhances the lethality cause by expression of tmodScer\UAS.cBa under the control of Scer\GAL4Mef2.PR, such that a greater fraction of the animals die as embryos.

The reduction in thin filament length seen in primary cultured muscle cells isolated from embryos expressing tmodScer\UAS.cBa under the control of Scer\GAL4Mef2.PR is increased if the animals are also carrying salsf07849.

Xenogenetic Interactions
Statement
Reference
Complementation and Rescue Data
Comments
Images (0)
Mutant
Wild-type
Stocks (1)
Notes on Origin
Discoverer
Comments
Comments

Mobilisation of the insertion can fully revert the lethal phenotype.

External Crossreferences and Linkouts ( 0 )
Synonyms and Secondary IDs (3)
Reported As
Symbol Synonym
Name Synonyms
Secondary FlyBase IDs
    References (5)