FB2024_03 , released June 25, 2024
Allele: Dmel\PenD14
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General Information
Symbol
Dmel\PenD14
Species
D. melanogaster
Name
FlyBase ID
FBal0061691
Feature type
allele
Associated gene
Associated Insertion(s)
Carried in Construct
Also Known As
imp-α2D14
Key Links
Allele class
Nature of the Allele
Allele class
Progenitor genotype
Cytology
Description

Imprecise excision of the P{lacW} element deleting 1.7kb of the Pen transcription unit.

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

PenD14/PenD14 or PenD14/PenmbmB adults exhibit a reduction in mushroom body volume.

The neuromuscular junction appears grossly normal in homozygous third instar larvae; the number of boutons, total synaptic area, average muscle surface area and the bouton number/muscle surface area not altered compared to wild-type controls.

Homozygous third instar larvae have axon commissure defects, with apparent discontinuities in the commissure (all larvae have at least one discontinuity and 89% have 2 or more as assayed by Fas3 immunoreactivity).

Mutant larvae have defects in the patterning of the body-wall muscles. Most frequently, muscles 6 and 7 appear crossed (instead of running parallel as in wild type), appearing to insert improperly at the insertion site of the other. Muscle 5 shows two types of defect; it is either abnormally thin or absent altogether. Branched muscle fibres are also seen at several positions.

Homozygous females lay on average only 1.2 eggs/day. None of the eggs hatch.

Homozygous mothers re unable to lay eggs, except in rare cases. Egg development in mutant mothers in retarded and the lower extremity of each ovary is occluded by shorter than normal eggs displaying deformed egg appendages. The rows of blocked egg chambers remain in the ovaries and later degenerate. Few mature eggs are deposited. They are all shorter and smaller in size than normal, and their dorsal appendages are reduced in length, flattened and frequently fused. Mutant egg chambers exhibit a dumpless phenotype. Homozygous mutant clones in the follicle cells exhibit a wild-type phenotype, but mutant germ-line clones give rise to a dumpless phenotype. Although ring canals in mutant egg chambers reach a diameter similar to wild-type rings they are partially occluded by an apparently loose masses of actin filaments often organised in concentric rings with a small opening in the central area.

In rare cases, homozygous males produce a few offspring when mated with wild-type females. Homozygous male and female adults appear morphologically wild type. Homozygous testes do contain large numbers of elongated sperm bundles, but squashed testes release few, if any, motile sperm and no sperm are observed in the seminal receptacle or spermathecum of wild-type females mated to homozygous males. A large number of spermatids fail to individualise in homozygous testes and remain syncytial. Normal appearing individualisation complexes are seen. The organisation of the sperm axonemes and structure of the minor and major mitochondrial derivatives appear normal. Eggs laid by homozygous females are smaller than normal and appear deflated. Dorsal appendages are missing, fused together or otherwise severely deformed. The chorions are thinner than normal.

External Data
Interactions
Show genetic interaction network for Enhancers & Suppressors
Phenotypic Class
Enhanced by
Statement
Reference
NOT Enhanced by
Statement
Reference
Suppressed by
NOT suppressed by
Statement
Reference
Enhancer of
NOT Enhancer of
NOT Suppressor of
Other
Phenotype Manifest In
NOT suppressed by
Other
Additional Comments
Genetic Interactions
Statement
Reference

Expression of Kap-α1Scer\UAS.cMa or Kap-α3Scer\UAS.cMa under the control of Scer\GAL4hs.PB using heat shock partially rescues the sterility of PenD14 males.

Fs(2)KetRE34 PenD14 double heterozygotes deposit as many eggs as wild type, they look normal but embryogenesis never commences.

Xenogenetic Interactions
Statement
Reference
Complementation and Rescue Data
Fails to complement
Comments

Expression of PenScer\UAS.cMa under the control of Scer\GAL4how-24B largely rescues the somatic muscle patterning defects seen in PenD14 larvae.

Expression of PenScer\UAS.cMa under the control of Scer\GAL4elav.PLu does not rescue the somatic muscle patterning defects seen in PenD14 larvae.

Expression of PenScer\UAS.P\T.cGa under the control of Scer\GAL4nos.UTR.T:Hsim\VP16 in PenD14 females restores egg laying to an average of 13.6 eggs/day and 88.2% of the eggs hatch.

Expression of PenΔIBB.Scer\UAS.P\T under the control of Scer\GAL4nos.UTR.T:Hsim\VP16 in PenD14 females restores egg laying to an average of 12.0 eggs/day. However, 86% of the eggs have abnormally fused dorsal appendages, approximately 10% are shorter than normal and none of the eggs hatch. 27% of ring canals in the ovary are fully occluded by actin.

Expression of PenS37A.Scer\UAS.P\T under the control of Scer\GAL4nos.UTR.T:Hsim\VP16 in PenD14 females restores egg laying to an average of 12.2 eggs/day. However, only 8.4% of the eggs hatch.

Expression of PenS56A.Scer\UAS.P\T.cGa under the control of Scer\GAL4nos.UTR.T:Hsim\VP16 in PenD14 females restores egg laying to an average of 12.4 eggs/day. Meiosis occurs in most eggs, with the formation of polar bodies. However, mitosis in the embryos is considerably delayed and asynchronous. Only 3.4% of the eggs hatch.

Expression of PenS98A.Scer\UAS.P\T under the control of Scer\GAL4nos.UTR.T:Hsim\VP16 in PenD14 females restores egg laying to an average of 13.0 eggs/day. 31.2% of the eggs hatch.

Expression of Pen3xSA.Scer\UAS.P\T under the control of Scer\GAL4nos.UTR.T:Hsim\VP16 in PenD14 females restores egg laying to an average of 10.9 eggs/day. Only 9.1% of the eggs hatch.

Expression of PenSNLSB-.Scer\UAS.P\T under the control of Scer\GAL4nos.UTR.T:Hsim\VP16 in PenD14 females restores egg laying to an average of 12.1 eggs/day. However, none of the eggs hatch.

Expression of PenNLSB-.Scer\UAS.P\T under the control of Scer\GAL4nos.UTR.T:Hsim\VP16 does not rescue the low rate of egg laying in PenD14 females. None of the eggs that are laid hatch. Ring canals in the ovary are occluded by actin.

Expression of PenDIM-.Scer\UAS.P\T under the control of Scer\GAL4nos.UTR.T:Hsim\VP16 in PenD14 females restores egg laying to an average of 13.1 eggs/day. However, none of the eggs hatch.

Expression of PenCASB-.Scer\UAS.P\T under the control of Scer\GAL4nos.UTR.T:Hsim\VP16 does not rescue the low rate of egg laying in PenD14 females. None of the eggs that are laid hatch. Ring canals in the ovary are occluded by actin.

Expression of PenScer\UAS.cMa under the control of Scer\GAL4hs.PB using heat shock partially rescues the sterility of PenD14 males. Expression of PenScer\UAS.P\T.cMa or PenS56A.Scer\UAS.P\T under the control of Scer\GAL4nos.UTR.T:Hsim\VP16 rescues the sterility of PenD14 females. Expression of Kap-α1Scer\UAS.P\T.cMa or Kap-α3Scer\UAS.P\T.cMa under the control of Scer\GAL4nos.UTR.T:Hsim\VP16 does not rescue the sterility of PenD14 females. PenD14/+ ; Df(3L)kto2/+ females are fertile. 90% of PenD14/+ ; Df(3R)by416/+ females are fertile.

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Mutant
Wild-type
Stocks (1)
Notes on Origin
Discoverer
External Crossreferences and Linkouts ( 0 )
Synonyms and Secondary IDs (8)
Reported As
Name Synonyms
importin-α2D14
Secondary FlyBase IDs
    References (13)