FB2024_03 , released June 25, 2024
Allele: Dmel\rtv11
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General Information
Symbol
Dmel\rtv11
Species
D. melanogaster
Name
FlyBase ID
FBal0014829
Feature type
allele
Associated gene
Associated Insertion(s)
Carried in Construct
Key Links
Genomic Maps

Nature of the Allele
Progenitor genotype
Cytology
Description

Nucleotide substitution: T?A.

Amino acid replacement: L6term.

Mutations Mapped to the Genome
Curation Data
Type
Location
Additional Notes
References
Nucleotide change:

T11153658A

Amino acid change:

L7term | rtv-PA; L7term | rtv-PB; L7term | rtv-PD

Reported amino acid change:

L6term

Comment:

Reported as a mutation from TTA (Leu) to TAA (stop).

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 ( 0 )
Disease
Evidence
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Modifiers Based on Experimental Evidence ( 0 )
Disease
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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

At stage 16, the dorsal trunk of the tracheal system is enlarged in the mutant embryos compared to wild type and has a convoluted shape. The luminal chitin cable is disorganised in the trachea of mutant embryos.

At stage 15, the dorsal trunk lumen in rtv11 mutants remains constricted at branch fusions and the tube between fusion junctions becomes excessively overgrown compared to wild-type, exhibiting a cystic-like appearance. Stage 16 rtv11 mutant embryos display irregular tracheal tube shapes, but do not exhibit defects in branch patterning, compared with wild-type embryos. During stage 16, the rtv11 mutant dorsal tube becomes extensively elongated compared with the wild-type trunk. The lumen of the narrower multicellular ganglionic branches is discontinuous in rtv11 mutants at the border of the ventral nerve cord. Lumen expansion from stage 14 to 15 does not involve cell division and relies on coordinated growth of the apical cell surfaces.

Mutant larvae cannot hatch and they die. They are hyperactive and occasionally turn around in the egg case. Mutant larvae appear bloated compared to wild-type larvae in cuticle preparations as the cuticle detaches from the epidermis. The three layers of the larval cuticle are present ultrastructurally, but the epicuticle is discontinuous and frayed and the procuticle is devoid of laminae. The envelope appears unaffected.

The head skeleton of mutant larvae is strongly sclerotized and its characteristic fibrous structure is missing.

The tracheae are undulated in mutant stage 17 embryos compared to wild type and fail to form air-filled tubes.

Homozygous embryos often reverse themselves within the eggshell (8.9% of embryos show this "retroactive" phenotype). When the embryos are mechanically devitellinised the resulting cuticle preparations stretch to a greater extent than wild-type cuticles, resulting in inflated cuticles ("blimp" phenotype). The embryos have defects in the head skeleton and denticle belts.

rtv11 embryos have darkly sclerotinised mouthparts, and are sometimes inverted in the egg case.

External Data
Interactions
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Phenotypic Class
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Additional Comments
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Xenogenetic Interactions
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Complementation and Rescue Data
Comments
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Mutant
Wild-type
Stocks (1)
Notes on Origin
Discoverer
External Crossreferences and Linkouts ( 0 )
Synonyms and Secondary IDs (3)
References (9)