FB2024_03 , released June 25, 2024
Allele: Dmel\TaoEP1455
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General Information
Symbol
Dmel\TaoEP1455
Species
D. melanogaster
Name
FlyBase ID
FBal0131614
Feature type
allele
Associated gene
Associated Insertion(s)
Carried in Construct
Also Known As
EP1455, EP(X)1455
Key Links
Genomic Maps

Nature of the Allele
Progenitor genotype
Associated Insertion(s)
Cytology
Description

The orientation of the P{EP} element is the same as the direction of Tao-1 transcription.

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 ( 1 )
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 male TaoEP1455 flies exposed to a moderate (non-sedating) concentration of ethanol exhibit reduced hyperactivity compared to wild type. This reduction in hyperactivity is present over a range of ethanol doses and is not observed in heterozygotes. The presence of the phenotype is dependent on the temperature during metamorphosis; flies at 25[o]C during pupariation exhibit reduced hyperactivity whereas locomotor activity in flies that metamorphose at 18[o]C is comparable to wild type. TaoEP1455 flies are not insensitive to ethanol, as naive flies startle normally on exposure, reaching speeds that are usually observed in the later phases of the hyperactivity response. The rate of ethanol accumulation is also similar to controls. TaoEP1455 flies are capable of normal locomotion, having an average walking speed that is comparable to wild type. As well as ethanol, TaoEP1455 mutant flies are also resistant to the effects of other drugs of abuse, exhibiting improved climbing behaviour in response to both cocaine and nicotine in comparison with control flies.

TaoEP1455/Tao50 males exhibit greatly diminished ethanol-induced hyperactivity compared to wild type.

The brains of TaoEP1455 mutant flies appear normal in size and gross morphology. However, striking differences are seen in the mushroom and ellipsoid bodies. The normally circular ellipsoid body appears open and flattened and the α and β lobes of the mushroom body are absent in most flies. The γ lobes are present but are often thinner than in wild type flies. No defects are observed in other components of the central complex, including the fan-shaped body and the cerebral bridge. However, a FasII-positive ball-like structure is present in the posterior of the brain, adjacent to the mushroom body calices.

The wings of Tao50/TaoEP1455 mutant flies are 8% larger than controls.

External Data
Interactions
Show genetic interaction network for Enhancers & Suppressors
Phenotypic Class
Suppressed by
Statement
Reference

TaoEP1455 has abnormal neuroanatomy | adult stage phenotype, suppressible by par-1W3/par-1[+]

TaoEP1455 has abnormal neuroanatomy | adult stage phenotype, suppressible by par-1k05603/par-1[+]

Enhancer of
NOT Enhancer of
Suppressor of
NOT Suppressor of
Statement
Reference
Phenotype Manifest In
Suppressed by
Statement
Reference

TaoEP1455 has adult mushroom body beta-lobe phenotype, suppressible by par-1W3/par-1[+]

TaoEP1455 has adult mushroom body gamma-lobe phenotype, suppressible by par-1W3/par-1[+]

TaoEP1455 has adult mushroom body beta-lobe phenotype, suppressible by par-1k05603/par-1[+]

TaoEP1455 has adult mushroom body alpha-lobe phenotype, suppressible by par-1W3/par-1[+]

Enhancer of
NOT Enhancer of
Statement
Reference
Suppressor of
NOT Suppressor of
Statement
Reference
Additional Comments
Genetic Interactions
Statement
Reference

One copy of par-1W3 partially suppresses the adult mushroom body morphology defects seen in TaoEP1455. Approximately half of all brain hemispheres have fully formed mushroom body lobes.

One copy of par-1k05603 partially suppresses the adult mushroom body morphology defects seen in TaoEP1455. Approximately half of all brain hemispheres have fully formed mushroom body lobes.

One copy of par-1k05603 suppresses the reduction in ethanol-induced hyperactivity seen in TaoEP1455 hemizygotes.

Xenogenetic Interactions
Statement
Reference

The rough eye phenotype caused by expression of Hsap\MAPTV337M.Scer\UAS under the control of Scer\GAL4GMR.PF is enhanced by Tao-1EP1455.

Complementation and Rescue Data
Comments

Expression of Tao+tNX19 rescues the defects in ethanol induced hyperactivity seen in TaoEP1455, with flies exhibiting normal or slightly elevated hyperactivity.

Expressing TaoEP1455 in neurons under the control of Scer\GAL4elav-C155 rescues the defects in ethanol-induced hyperactivity seen in TaoEP1455 mutants.

Expression of TaoEP1455 rescues the eye overgrowth phenotype seen when TaoKK108458 is expressed under the control of Scer\GAL4GMR.PF.

Images (0)
Mutant
Wild-type
Stocks (2)
Notes on Origin
Discoverer
Comments
Comments

Precise excision of the P{EP} element reverts the modifying effect of Tao-1EP1455 on the rough eye phenotype caused by expression of Hsap\MAPTV337M.Scer\UAS under the control of Scer\GAL4GMR.PF.

The ethanol induced hyperactivity seen in TaoEP1455 is restored in lines with precise excision of the P-element.

External Crossreferences and Linkouts ( 0 )
Synonyms and Secondary IDs (6)
Reported As
Symbol Synonym
Name Synonyms
Secondary FlyBase IDs
    References (9)