Allele Dmel\ds38k
| General Information | |||
|---|---|---|---|
| Symbol | Dmel\ds38k | Species | D. melanogaster |
| Name | FlyBase ID | FBal0028156 | |
| Feature type | allele | Created / Updated | 2006-08-22/2006-08-22 |
| Associated gene | Dmel\ds | ||
| Allele class | |||
| Mutagen | spontaneous | ||
Nature of the Allele
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| Allele class | |||
| Mutagen | |||
| Mapped Features and Mutations | |||
Type Symbol & Location Additional Notes References | |||
| Associated Sequence Data | |||
| DDBJ
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EMBL / GenBank | DNA sequence Protein sequence Name | ||
| UniProtKB/Swiss-Prot | |||
| UniProtKB/TrEMBL | |||
| Progenitor genotype | |||
| Nature of the lesion | Statement Reference | ||
| Assay mode | |||
| Cytology | |||
Phenotypic Data
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Phenotypic Class
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Phenotype Manifest In
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ommatidium (with dsUAO71) eye equator (with dsUAO71) wing hinge (with dsUAO71) tarsal segment (with ds1) wing hinge (with ds05142) wing hinge (with ds33k) | |||
Detailed Description
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Statement Reference 40% eclosion rate. In addition to 100% penetrant defects in leg, wing and thorax, rough patches in the eye appear at low frequency. Anterior crossvein is displaced posteriorly. Legs are stubby with a reduced number of tarsal joints. There are duplicated bristles on the notum and the wings are held out stiffly with duplicated crossveins. Flies have difficulty walking, cannot jump or fly, do not reproduce and die within a few days of eclosion. When homozygous somatic clones are made in the eye, approximately 29% of ommatidia display dorsal ventral inversions, while fewer than 1% of genetically mutant ommatidia display anterior posterior inversions. Inverted equators also occur in 83% of clones. These arise along the equatorial border of the clone rather than within the clone. Also ectopic equators are seen, albeit rarely. In homozygous mutant eyes (generated by mitotic recombination using the "EGUF/hid method"), 31% of ommatidia display dorsal ventral inversions. The endogenous equator is stil evident. When ommatidia are examined that are mosaic (with respect to ds38k) in the pair of photoreceptor cells, R3 and R4, 77% of the time the mutant cell is R3 and the wild-type cell R4. When the pair R2 and R5 are examined, 65% of the time the mutant cell is R2 and the wild-type cell R5. When the pair R1 and R6 are examined, 73% of the time the mutant cell is R1 and the wild-type cell R6. The dorsal-ventral polarity of ommatidia in ds38k/dsUAO71 flies is partially randomised. Defects in anterior-posterior ommatidial polarity or rotation are not seen. Somatic clones of ds38k in the eye: about 45% of ommatidia inverted on their dorsoventral axes. The clones also show directional nonautonomy, with most ommatidia on the equatorial boundary being inverted (78% in total), but few ommatidia being inverted on the polar boundary (10% total). In approximately 5% of ds38k homozygous escapers the wing is replaced by a winglet and, posterior to it, a lateral protuberance that looks like an scutum and scutellum. The winglet is composed of proximal anterior structures arranged in a mirror-image duplication. The smallest examples of these winglets consist of a mirror image duplication of anterior hinge structures - the tegula and humeral sclerite. Larger examples also have a rudimentary wing blade consisting of a mirror image duplication of anterior structures - the costa and anterior wing margin. This phenotype is also seen occasionally in ds38k/ds33k flies (3 out of 72 heminota), ds38k/ds05142 (approximately 2% of heminota) and ds38k/dsUAO71. In late third instar discs of ds38k homozygotes with a reduced wing pouch, marker expression indicates that the pouch is entirely within the anterior compartment. This absence of posterior cells in the wing territory can be seen as early as the mid second instar. ds38k/ds1 flies have legs with reduced segment size and fusion of the tarsal segments and partial elimination of the tarsal joints. ds38k/dsUAO71 flies have disorganised ommatidial polarity; no obvious equator is present. Flies expressing dsScer\UAS.P\T.cSa under the control of Scer\GAL4αTub84B.PL in a ds38k/dsUAO71 background have a normal overall pattern of polarisation in the eye; an equator can easily be discerned. 97.6% of ommatidia are correctly constructed and rotated in these animals. Expression of dsScer\UAS.P\T.cSa under the control of Scer\GAL4fj-VG1 in a ds38k/dsUAO71 background results in eyes with disorganised ommatidial polarity. | |||
Interactions
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Phenotypic Class
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Other | |||
Statement Reference | |||
Phenotype Manifest In
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Suppressed by | |||
Statement Reference ds38k has dorsal mesothoracic disc | anterior compartment phenotype, suppressible by Scer\GAL4dpp.blk1/wgl-12.Scer\UAS ds38k has dorsal mesothoracic disc | posterior compartment phenotype, suppressible by Scer\GAL4dpp.blk1/wgl-12.Scer\UAS ds38k has dorsal mesothoracic disc phenotype, suppressible | partially by Scer\GAL4dpp.blk1/wgl-12.Scer\UAS ds38k has dorsal mesothoracic disc | anterior compartment phenotype, suppressible | partially by dppScer\UAS.cCa/Scer\GAL4bi-omb-Gal4 ds38k has dorsal mesothoracic disc | posterior compartment phenotype, suppressible | partially by dppScer\UAS.cCa/Scer\GAL4bi-omb-Gal4 | |||
Enhancer of | |||
Statement Reference | |||
Other | |||
Statement Reference | |||
Additional Comments
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Genetic Interactions
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Statement Reference Wing discs from l(2)gd11, ds38k double mutants are large and have variable morphology, often with a series of frill-like folds on the edges of the discs. Leg discs are larger and thicker than for l(2)gd11 alone. The haltere disc duplicates, triplicates or quadruplicates. The eye antenna disc shows a pair of knob-like structures in the anterior of the antenna field that probably represent presumptive antennae. Animals usually die in the larval or early pupal stage, and never reach the pharate adult stage. Clones double mutant for l(2)gd11 and ds38k form protrusions due to abnormal morphogenesis that might result from an excess of cells. Imaginal discs from ds38k l(2)gd11/l(2)gd11 larvae resemble those of ft8 l(2)gd11/l(2)gd11 rather than l(2)gd11/l(2)gd11 in that wing, haltere, second and third leg discs are duplicated. The wing shortening phenotype of fjd1 homozygotes is enhanced by ds38k/+. Reduction in the distance between anterior and posterior cross-veins in fjt14.T:Hsap\GALNT3 flies is enhanced by ds38k/+. Like ds38k/dsUAO71 flies, ds38k/dsUAO71; fj109-583.Scer\UAS.T:Hsap\GALNT3 ; Scer\GAL4bi-omb-Gal4 flies have inverted ommatidia scattered throughout their eyes. wgl-12.Scer\UAS; Scer\GAL4dpp.blk1 suppresses duplication of the wing pouch and prospective notum in ds38k homozygous wing discs, although the hinge domain is expanded compared with the wild type. Normal anterior-posterior subdivision is also restored in these discs. These animals die before reaching adulthood. dppScer\UAS.cCa; Scer\GAL4bi-omb-Gal4 does not suppress duplication of the wing pouch and prospective notum in ds38k homozygous wing discs. However, the resulting discs have an expanded, rather than a reduced wing pouch, and anterior-posterior subdivision of the wing pouch is restored. nkd2/+ partially suppresses the leg phenotype of ds38k/ds1 flies: tarsal joint formation is completely rescued and the size of the tarsal segments is recovered almost to that of wild type. ds38k fjN7/dsUAO71 fjd1 flies have disorganised ommatidial polarity; no obvious equator is present. Flies expressing both fjScer\UAS.cZa and dsScer\UAS.P\T.cSa under the control of Scer\GAL4αTub84B.PL in a ds38k fjN7/dsUAO71 fjd1 background have a disorganised ommatidial polarity; no obvious equator is present. Flies expressing dsScer\UAS.P\T.cSa under the control of Scer\GAL4αTub84B.PL in a ds38k fjN7/dsUAO71 fjd1 background have a disorganised ommatidial polarity; no obvious equator is present. Flies expressing fjScer\UAS.cZa under the control of Scer\GAL4αTub84B.PL in a ds38k fjN7/dsUAO71 fjd1 background have a disorganised ommatidial polarity; no obvious equator is present. Flies expressing dsScer\UAS.P\T.cSa under the control of Scer\GAL4fj-VG1 in a dsUAO71 fjVG1/ds38k fjN7 background have a disorganised ommatidial polarity; the eye contains a clearly perceptible equator in which most of the nearby ommatidia are reversed in polarity and thus point away from the equator. Flies expressing both fjScer\UAS.cZa and dsScer\UAS.P\T.cSa under the control of Scer\GAL4αTub84B.PL in a ds38k fjN7/dsUAO71 fjd1 background have normal polarity throughout the wing blade with the exception of a small region along the anterior proximal margin of the wing, where a small swirl is often present. Flies expressing dsScer\UAS.P\T.cSa under the control of Scer\GAL4αTub84B.PL in a ds38k fjN7/dsUAO71 fjd1 background have normal polarity throughout the wing blade with the exception of a small region along the anterior proximal margin of the wing, where a small swirl is often present. | |||
Xenogenetic Interactions
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Statement Reference | |||
Complementation & Rescue Data
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| Comments | |||
Stocks
( 2 ) | |||
| Bloomington | |||
| Kyoto | |||
Notes on Origin
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| Discoverer | Waddington, Nov. 1938. Waddington, 1938 Bridges. | ||
Arose in: a ssa stock. | |||
Synonyms & Secondary IDs
( 3 ) | |||
| Reported As | |||
| Symbol Synonym | ds38 ds38K ds38k | ||
| Name Synonym | |||
| Secondary FlyBase IDs | |||
References
( 15 ) | |||
| Research paper |
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| Book |
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Nature of the Allele