FB2024_03 , released June 25, 2024
Allele: Dmel\frusat15
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General Information
Symbol
Dmel\frusat15
Species
D. melanogaster
Name
FlyBase ID
FBal0031285
Feature type
allele
Associated gene
Associated Insertion(s)
Carried in Construct
Key Links
Allele class
Nature of the Allele
Allele class
Caused by aberration
Cytology
Description

Deletion beginning 20bp into the inverted repeat of the P{lwB}frusat element and removing all nucleotides from 96,551 to 13,839 of AE003722 (including the entire fru common coding region).

Imprecise excision of P{lwB} element, together with a deletion of at least 17kb proximal to the insertion point.

Imprecise excision of the P-element of frusat.

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 ( 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

frusat15/Df(3R)fru4-40 males lack the muscle of Lawrence.

The interpulse interval is significantly longer than normal and sine song is completely absent in fruΔC/frusat15 males.

Midline crossing by foreleg gustatory receptor neuron (GRN) axons is nearly absent in fruP1.LexA/frusat15 XY animals.

Flies transheterozygous for fruΔC and frusat15 exhibit approximately 13% fertility compared to wild-type. They also experience reduced viability, with approximately 32% the wild-type level of male and female progeny surviving.

15.0% of fruw12/frusat15 embryos have abnormal Fas2-positive fascicles and 16.3% have defects in the distribution and pattern of BP102-positive axons in the central nervous system. Axonal outgrowth of the dMP2 and vMP2 neurons can be delayed in these embryos, while in some cases the growth cone appears to initiate growth in an abnormal direction. 15.8% of frusat15/fruAJ96u3 embryos have abnormal Fas2-positive fascicles and 17.4% have defects in the distribution and pattern of BP102-positive axons in the central nervous system. 12.4% of frusat15/Df(3R)fruw24 embryos have abnormal Fas2-positive fascicles and 18.4% have defects in the distribution and pattern of BP102-positive axons in the central nervous system. frusat15/fruM5 and frusat15/fru4-40 embryos have normal Fas2-positive and BP102-positive axon tracts in the central nervous system. The average number of repo-positive glial cells is not different from wild type in fruw12/frusat15 embryos, although the pattern of the repo-positive glial cells is slightly abnormal. The Fas2-positive and BP102-positive axon tracts in the central nervous system are defective in virtually all fruw12/frusat15 embryos which are expressing fruMA.Scer\UAS.cSa, fruMB.Scer\UAS.cSa or fruMC.Scer\UAS.cSa under the control of Scer\GAL4sca-537.4.

2% fruw12/frusat15 adult escapers are seen. 5% frusat15/fruw27 adult escapers are seen. 32% of fru1/frusat15 males are fertile (this may reflect genetic background effects). 33% of fru0-1/frusat15 males are fertile (this may reflect genetic background effects). Male-female courtship as measured by courtship index (CI) or wing extension index (WEI) is completely abolished in frusat15/fru4-40, frusat15/fruM5 males. frusat15/fruM5 or frusat15/fru4-40 males show substantial chaining. fruw12/frusat15 adults that have been dissected from the pupal case show minor external defects, such as uninflated wings, wings held at a 70-90o angle to the body, leg joint defects and duplicated bristles. The number and pattern of divisions of larval neuroblasts in the thoracic ganglia or brain appears normal in frusat15/Df(3R)fruw24 animals. The male-specific abdominal neuroblasts are present and actively dividing in frusat15/Df(3R)fruw24 males.

fru1/frusat15 males mated individually to a single virgin female show vigorous courtship behaviour, comparable to that of wild-type males. High levels of abdominal bending are seen in the males that show courtship behaviour. However, the proportion of males that mate is reduced compared to wild type; 18% of the transheterozygous males court but do not mate. The fertility of the males (as assayed by the ability of the mated females to produce progeny) is reduced compared to wild-type males. The transheterozygous males show longer than normal mating-initiation latencies compared to heterozygous controls. Mating duration is also longer than normal and shows a far more scattered distribution than that of wild-type males.

The number of progeny (number of resulting pupae) obtained from a fertile mating between a fru1/frusat15 male and a wild-type female are not significantly different to wild type.

fru1/frusat15 males show homosexual courtship activity.

External Data
Interactions
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Phenotypic Class
NOT Enhancer of
Statement
Reference
NOT Suppressor of
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Phenotype Manifest In
Additional Comments
Genetic Interactions
Statement
Reference
Xenogenetic Interactions
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Reference
Complementation and Rescue Data
Comments

Male-typical crossing of the midline by foreleg gustatory receptor neuron (GRN) axons is restored in XY fruP1.LexA/frusat15 animals by expression of fruMC.Scer\UAS.T:BPV-1\AU1 under the control of Scer\GAL4Poxn.14.

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Mutant
Wild-type
Stocks (1)
Notes on Origin
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External Crossreferences and Linkouts ( 0 )
Synonyms and Secondary IDs (4)
References (17)