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General Information
Symbol
Dmel\cry01
Species
D. melanogaster
Name
FlyBase ID
FBal0218575
Feature type
allele
Associated gene
Associated Insertion(s)
Carried in Construct
Allele class
Nature of the Allele
Allele class
Mutations Mapped to the Genome
 
Type
Location
Additional Notes
References
Associated Sequence Data
DNA sequence
Protein sequence
 
 
Cytology
Nature of the lesion
Statement
Reference
The entire cry coding region has been replaced by a w+mW.hs marker.
Insertion components
TI{TI}cry01
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 )
 
Phenotypic Data
Phenotypic Class
Phenotype Manifest In
Detailed Description
Statement
Reference
cry01 homozygous adults reared under 12h:12h white light:dark cycles exhibit a significantly earlier morning activity onset and significantly later evening activity onset, as compared to controls. These mutants show an apparently normal resynchronization to a 6h delay in 12h:12h white light:dark cycle, as well as no obvious rhythmicity defects after a few days of either constant light or darkness, as compared to controls.
cry01 homozygous adults previously trained under 12h:12h light:dark cycles present a subtle decrease in circadian rhythmicity under constant darkness conditions, fail to become arrhythmic under constant light conditions, present a severe decrease in circadian phase shifting in response to light pulses during the night period, present a significant delay in circadian phase shifting in response to a 8h delay in the light:dark transition, and present defective arousal - i.e. a significant decrease in the frequency of arousal and a significant delay in arousal - in response to a light pulse during the night period, as compared to controls; the large ventrolateral neurons (l-LNv) of the adult brain in these mutants exhibit a severe decrease in the frequency of firing in response to white light, which is less severe in response to blue light (405nm) than to orange light (550-1000nm), as compared to controls.
cry01 mutants exhibit normal light-dependent temperature preference. Similarly to wild-type, they prefer higher temperature in the light than in the dark.
cry01 mutant class IV dendritic arborization neurons do not exhibit any defects in light response.
Homozygous cry01 flies do not show a naive preference to a magnetic field, or an enhanced preference to a magnetic field after training, under full-spectrum light conditions. cry01/Canton-S flies do show a significant response under the same conditions. Transheterozygous cryb/cry01 flies do not show significant naive or trained responses to a magnetic field.
Homozygous flies show robust periodic locomotion in two free-running conditions; constant darkness (DD) and constant light (LL) (a condition that causes genetically normal flies to go arrhythmic). In DD, most cry01 flies show solidly rhythmic locomotion at 25o or 29oC. Period values are generally in the normal range, except that approximately 20% of the mutant flies tested at 25oC give shorter than normal values. At 18oC, cry01 flies show weak rhythmicity, although the rhythmic individuals have normal period values. In LL, most cry01 flies behave rhythmically at 25oC. Most of the rhythmic individuals have two rhythmic components within a given behavioural record in LL, the average for the relatively short free-running period is 21-22 hours and that of the longer is 25-26 hours. At 29oC and at 18oC in LL, cry01 flies show a relatively high degree of arrhythmicity. At 25oC in LL, when periodic components can be reliably analysed, approximately 60% of the flies show two periodicities whose average values are 20 and 24 hours. At 18oC in LL, the rhythmic mutant flies show only one periodic component, of approximately 24 hours. Most cry01/Df(3R)Dl-BX12 flies behave rhythmically under constant light conditions at 25oC, approximately one-third of the mutant flies have one periodic component (approximately 24 hours) and the remainder have two periodic components per individual (approximately 22 and 25 hours). cry01 flies entrained to 12 hours light: 12 hour dark cycles and then exposed to 8 hour delayed light-dark (LD) cycles are able to resynchronise to the new light regime. cry01 flies that are entrained to 12 hour light: 12 hour dark cycles ( 12:12 LD) and are then shifted to 9:9 , 13:13 or 14:14 LD cycles routinely re-entrain to behave in synchrony with the novel non-24 hour cycles.
External Data
Interactions
Show genetic interaction network for Enhancers & Suppressors
Phenotypic Class
Enhanced by
NOT Enhanced by
Statement
Reference
Suppressed by
Enhancer of
Statement
Reference
NOT Enhancer of
Statement
Reference
Other
Phenotype Manifest In
Additional Comments
Genetic Interactions
Statement
Reference
cry01, Rh70 double-homozygous adults reared under 12h:12h white light:dark cycles exhibit: an earlier morning activity onset as compared to controls, which is more severe than both single mutant; an earlier evening activity onset as compared to controls, instead of the later evening activity onset observed in cry01 mutants; and a longer siesta as compared to controls, which is slightly shorter than that of cry01 mutants. These double mutants show an apparently normal resynchronization to a 6h delay in 12h:12h white light:dark cycle and an apparently normal rhythmicity under constant dark, as compared to both single mutants and to wild-type controls. cry01, norpA39 and Rh70, norpA39 double-homozygous adults reared under 12h:12h white light:dark cycles exhibit a significant delay in resynchronizing to a 6h delay in 12h:12h white light:dark cycle compared to controls; these phenotypes are not enhanced by additional cry01 and Rh70 homozygosity, respectively.
The circadian rhythmicity defects of cry01 homozygotes are rescued by Rh52, Rh61 double homozygosity. cry01, norpA36 double homozygous adults previously trained under 12h:12h light:dark cycles present slightly increased circadian rhythmicity defects under constant darkness conditions, which are rescued by additional homozygosity for either as trpMB03672 or trplMB10553, compared to each single homozygotes. cry01, Rh71 double homozygous adults exhibit an increased delay in circadian phase shifting to a 8h delay in the light:dark transition, as compared to either single homozygote. A significant proportion of either cry01/cry01, Rh71/Rh71 adults or cry01/cryb, Rh71/Rh71 adults previously trained under 12h:12h light:dark cycles fail to maintain rhythmicity under constant darkness conditions, while the rhythmic individuals present a significantly longer period, as compared to controls.
norpA36 cry01 double mutant flies generally fail to resynchronise to the new light regime when they are entrained to 12 hour light: 12 hour dark cycles and then exposed to 8 hour delayed light-dark (LD) cycles; their daily peaks of locomotion continue to occur at the time of the photic transitions that that were in operation before the 8 hour shift. Some of the double mutant flies are "partially entrained"; six says after the photic shift, daily peaks of locomotion fall between the phases expected for continuing entrainment to the old LD regime versus re-entrainment to the new one. norpA36 cry01 double mutant flies are impaired in their ability to re-entrain with novel non-24 hour light:dark (LD) cycles (compared to single mutant flies) when they are entrained to 12:12 LD and are then shifted to 9:9 , 13:13 or 14:14 LD cycles.
Xenogenetic Interactions
Statement
Reference
Complementation and Rescue Data
Fails to complement
Comments
Images (0)
Mutant
Wild-type
Stocks (0)
Notes on Origin
Discoverer
External Crossreferences and Linkouts ( 0 )
Synonyms and Secondary IDs (3)
References (14)