FB2026_01 , released March 12, 2026
FB2026_01 , released March 12, 2026
Allele: Dmel\Gyc89Dae01821
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General Information
Symbol
Dmel\Gyc89Dae01821
Species
D. melanogaster
Name
FlyBase ID
FBal0160381
Feature type
allele
Associated gene
Associated Insertion(s)
Carried in Construct
Key Links
Genomic Maps

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

Insertion 494bp upstream of the translational initiation codon.

Allele components
Component
Use(s)
Inserted element
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

Gyc-89Dae01821 mutant larvae show a similar preference for sucrose as wild-type larvae, but fail to avoid a caffeine source, as wild-type larvae do.

Gyc-89Dae01821 mutants show a similar attraction to 1% agar containing 100mM sucrose as wild-type. They show similar avoidance to 1% agar with 10mm caffeine as in wild-type but fail to show caffeine avoidance to lower levels of caffeine such as 1mM caffeine in 1% agar.

Recordings from s6, a S-type sensilla of the labellum, reveal a significantly reduced response to 2.5mM caffeine in Gyc-89Dae01821 mutants. The mean number of impulses recorded is about half that from control flies.

Homozygous third instar larvae do not show defects in general locomotion.

Homozygous third instar larvae show a defect in the normal hypoxia escape response; mutant larvae which have been allowed to burrow into the food and commence feeding take significantly longer than control larvae to leave the food when exposed to low oxygen concentrations.

Mutant larvae shifted to mildly hypoxic (17-20% oxygen) or hyperoxic (22-30% oxygen) conditions respond in the same manner as wild-type controls, with a significant reduction in the number of stops and turns in their locomotion. However, if they are shifted to a more severe hypoxic environment (11-15% oxygen), the mutant larvae show no behavioural response and maintain their area-restricted search with a high number of stops and turns (wild-type controls show a significant reduction in the number of stops and turns under these conditions).

External Data
Interactions
Show genetic interaction network for Enhancers & Suppressors
Phenotypic Class
Phenotype Manifest In
Additional Comments
Genetic Interactions
Statement
Reference

The lack of caffeine avoidance seen in Gyc-89Dae01821 or Gyc-89DbMB03197/Gyc-89Dae01821 double mutants can be rescued through expression of Gyc-89DbScer\UAS.cVa under the control of Scer\GAL4Gyc-89Da.1.9. In contrast, expression of Gyc-89DaScer\UAS.cVa under the control of Scer\GAL4Gyc-89Db.3.4 fails to suppress the sucrose ambivalence phenotype.

Gyc-89Dae01821/Gyc-89DbMB03197 double mutants exhibit a significantly reduced response to 2.5mM caffeine, more so than in either single mutant.

The defect in the hypoxia escape response that is seen in Gyc-89Dae01821 larvae is rescued by expression of Gyc-89DbScer\UAS.cVa under the control of either Scer\GAL4Gyc-89Da.1.9 or Scer\GAL4Gyc-89Db.3.4.

The failure to change larval exploratory behaviour that is seen in Gyc-89Dae01821 larvae downshifted from 21 to 15% oxygen is rescued by expression of Gyc-89DbScer\UAS.cVa under the control of Scer\GAL4Gyc-89Da.1.9, but is not rescued by expression of Gyc-89DbScer\UAS.cVa under the control of Scer\GAL4Gyc-89Db.3.4.

Xenogenetic Interactions
Statement
Reference
Complementation and Rescue Data
Comments

The lack of caffeine avoidance seen in Gyc-89DbMB03197 or Gyc-89DbMB03197/Gyc-89Dae01821 double mutants can be rescued through expression of Gyc-89DaScer\UAS.cVa under the control of Scer\GAL4Gyc-89Da.1.9. In contrast, expression of Gyc-89DaScer\UAS.cVa under the control of Scer\GAL4Gyc-89Db.3.4 fails to suppress the sucrose ambivalence phenotype.

The loss of caffeine avoidance behaviour at low concentrations of caffeine in Gyc-89Dae01821 mutants is rescued by expressing Gyc-89DaScer\UAS.cVa under the control of Scer\GAL4Gyc-89Db.3.4.

The defect in the hypoxia escape response that is seen in Gyc-89Dae01821 larvae is rescued by expression of Gyc-89DaScer\UAS.cVa under the control of either Scer\GAL4Gyc-89Da.1.9 or Scer\GAL4Gyc-89Db.3.4.

The failure to change larval exploratory behaviour that is seen in Gyc-89Dae01821 larvae downshifted from 21 to 15% oxygen is rescued by expression of Gyc-89DaScer\UAS.cVa under the control of Scer\GAL4Gyc-89Da.1.9, but is not rescued by expression of Gyc-89DaScer\UAS.cVa under the control of Scer\GAL4Gyc-89Db.3.4.

Images (0)
Mutant
Wild-type
Stocks (2)
Notes on Origin
Discoverer
External Crossreferences and Linkouts ( 0 )
Synonyms and Secondary IDs (3)
Reported As
Symbol Synonym
CG14885e01821
Gyc89Dae01821
Name Synonyms
Secondary FlyBase IDs
    References (5)