A Database of Drosophila Genes & Genomes

FB2013_03, released May 7th, 2013
 

Allele Dmel\salmScer\UAS.cKa

General Information
SymbolDmel\salmScer\UAS.cKaSpeciesD. melanogaster
NameSaccharomyces cerevisiae UAS construct a of KuhnleinFlyBase IDFBal0051183
Feature typealleleAssociated geneDmel\salm
Allele class
Mutagenin vitro construct - regulatory fusion
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Description
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FB2013_03
FB2013_02
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Construct: Expression of salm fragment from nucleotide 370 to nucleotide 5555 of the composite cDNA sequence (FBrf0066960) is governed by Scer\UAS regulatory sequences.
Carried in construct
Cytology
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adherens junction & embryonic dorsal branch, with Scer\GAL4btl.PS
adherens junction & embryonic ganglionic branch, with Scer\GAL4btl.PS
adherens junction & embryonic tracheal system, with Scer\GAL4btl.PS
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Ectopic expression of salm[Scer\UAS.cKa] under the control of Scer\GAL4[Mef2.PR] and Scer\GAL80 induces the transformation of the tubular fibre-type leg muscles into fibrillar indirect flight muscle-like muscles. As a consequence, these transformed leg muscles do not function properly and flies die as pharate adults. Ectopic expression of salm[Scer\UAS.cKa] under the control of Scer\GAL4[1151] and Scer\GAL80 induces the transformation of the tubular fibre-type leg muscles into fibrillar indirect flight muscle-like muscles. As a consequence, these transformed leg muscles do not function properly and flies die as pharate adults. Ectopic expression of salm[Scer\UAS.cKa] under the control of Scer\GAL4[Mef2.PR] and Scer\GAL80 induces the transformation of the tubular fibre-type abdominal muscles into fibrillar indirect flight muscle-like muscles.
Expression of salm[Scer\UAS.cKa] under the control of Scer\GAL4[dpp.blk1] generally results in early pupal lethality. If a weak driver insertion or lower temperature is used, more pharate adults can be recovered. These pharate adults have a large ectopic notum, which often contain macrochaetae. Severe defects in the legs and wings are seen, as well as head and notum defects. Third instar leg discs expressing salm[Scer\UAS.cKa] under the control of Scer\GAL4[dpp.blk1] and then transplanted into wild-type host larvae of approximately the same age show transformations. 15/16 transplanted second leg discs give rise to mesothoracic notum structures. The legs are strongly truncated (distal structures like claws are completely missing and other leg segments are crippled and difficult to recognise). The sternopleura can be identified in several cases, and occasionally some wing hinge tissue can be seen. 5/16 transplanted second leg discs show transdetermination to proximal wing structures and 4/16 show transdetermination to structures of the third antennal segment. Only 2/14 transplanted first leg discs form ectopic notum structures. The legs are crippled and truncated. No differentiated claws are found and only a few occasional sex comb teeth can be seen. 3/3 transplanted third leg discs result in truncated and malformed leg structures (no notum tissue is seen). Mesothoracic leg discs expressing salm[Scer\UAS.cKa] under the control of Scer\GAL4[dpp.blk1] show extra growth in dorsal cells. Wing discs expressing salm[Scer\UAS.cKa] under the control of Scer\GAL4[dpp.blk1] show outgrowths within the central domain (the region that would normally develop into the wing blade). Only a few larvae expressing salm[Scer\UAS.cKa] under the control of Scer\GAL4[bi-omb-Gal4] develop into pharate adults. These animals either have strongly reduced wings or no wings, and instead a supernumerary notum has formed.
Expression of salmScer\UAS.cKa under the control of Scer\GAL4btl.PS in the tracheal system results in autocellular adherens junction (AJ) formation being completely blocked, and all branches are transformed into tubes with cells organised in a paired arrangement and connected via intercellular AJs. Either the cells are not capable of reaching around the lumen or the initial autocellular AJ contacts are not stabilised and zipped up. Single cells expressing salmScer\UAS.cKa under the control of Scer\GAL4btl.B123 in either the dorsal or ventral branches of the tracheal system still form extended autocellular adherens junctions (AJs) (as occurs in wild type). Groups of cells in the dorsal or ganglionic branch expressing salmScer\UAS.cKa under the control of Scer\GAL4btl.B123 are generally inhibited in their capacity to form autocellular AJs and form cell aggregates with intercellular AJs. However, single cells at the periphery of such groups often form autocellular AJs.
When salmScer\UAS.cKa is driven by Scer\GAL4btl.PS the cells of the lateral trunk of the tracheal system adopt a more dorsal identity.
When salmScer\UAS.cKa is driven by Scer\GAL4btl.PS no increase in dorsal trunk cell migration is seen.
Expression of salmScer\UAS.cKa under the control of Scer\GAL4en-e16E results in a high frequency of lateral chordotonal organ arrays containing 3-4 chordotonal organs at 25oC, while at 29oC 3 chordotonal organs per array are mostly seen. A moderate reduction in oenocyte number is also seen.
When expression is driven by Scer\GAL4btl.PS there is no effect on the primary outgrowth of tracheal dorsal branch progenitor cells. Subsequently these cells fail to grow out to the dorsal midline and lack the typical U-turn structure of wild-type dorsal branches. Dorsal anastomosis formation is blocked.
When expression is driven by Scer\GAL4Kr.PM, the number of tracheal primordial cells and the corresponding differentiated tracheal system is reduced. There are no associated defects in the epidermis or peripheral nervous system. When expression is driven by Scer\GAL4salm.TSE, in an otherwise salm mutant background, the dorsal truck branches fuse at high frequency, leading to dorsal trunk fragments which span several tracheal metameric units, constituting a partial rescue of the salm mutant phenotype.
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Statement
Reference
Expression of salm[Scer\UAS.cKa] under the control of Scer\GAL4[1151] restores the normal muscle fibre structure in dorsal longitudinal indirect flight muscles in vg[null] mutants. Fibrillar transformation of leg muscles is not observed as a result of salm[Scer\UAS.cKa] expression.
The addition of salmScer\UAS.cKa and Scer\GAL4btl.PS to rib1 embryos does not rescue the dorsal trunk migration phenotype.
Coexpression of spis.Scer\UAS and salmScer\UAS.cKa under the control of Scer\GAL4en-e16E results in a chordotonal phenotype identical to that seen when salmScer\UAS.cKa alone is expressed under the control of Scer\GAL4en-e16E. Giant clusters of oenocyte cells are induced dorsally, as is seen when spis.Scer\UAS alone is expressed under the control of Scer\GAL4en-e16E.
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Fails to rescue
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Bloomington
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hide Synonyms & Secondary IDs ( 3 )
Reported As
Symbol Synonym
salmScer\UAS.cKa
 
salmUAS.cKa
 
Name Synonym
Saccharomyces cerevisiae UAS construct a of Kuhnlein
Secondary FlyBase IDs
hide References ( 12 )
Research paper
Bryantsev et al., 2012, Dev. Cell 23(3): 664--673
Extradenticle and homothorax control adult muscle fiber identity in Drosophila. [FBrf0219427]
Schönbauer et al., 2011, Nature 479(7373): 406--409
Spalt mediates an evolutionarily conserved switch to fibrillar muscle fate in insects. [FBrf0216735]
Grieder et al., 2009, Dev. Biol. 329(2): 315--326
Spalt major controls the development of the notum and of wing hinge primordia of the Drosophila melanogaster wing imaginal disc. [FBrf0210004]
Caussinus et al., 2008, Curr. Biol. 18(22): 1727--1734
Tip-Cell Migration Controls Stalk-Cell Intercalation during Drosophila Tracheal Tube Elongation. [FBrf0206360]
Sprecher et al., 2007, Genes Dev. 21(17): 2182--2195
Adult and larval photoreceptors use different mechanisms to specify the same Rhodopsin fates. [FBrf0205916]
Domingos et al., 2004, Dev. Biol. 273(1): 121--133
Regulation of R7 and R8 differentiation by the spalt genes. [FBrf0179729]
Ribeiro et al., 2004, Curr. Biol. 14(24): 2197--2207
Genetic control of cell intercalation during tracheal morphogenesis in Drosophila. [FBrf0183816]
Franch-Marro and Casanova, 2002, Dev. Biol. 250(2): 374--382
spalt-induced specification of distinct dorsal and ventral domains is required for Drosophila tracheal patterning. [FBrf0151884]
Bradley and Andrew, 2001, Development 128(15): 3001--3015
ribbon encodes a novel BTB/POZ protein required for directed cell migration in Drosophila melanogaster. [FBrf0138367]
Elstob et al., 2001, Development 128(5): 723--732
spalt-dependent switching between two cell fates that are induced by the Drosophila EGF receptor. [FBrf0134578]
Chen et al., 1998, Development 125(24): 4959--4968
The transcription factors KNIRPS and KNIRPS RELATED control cell migration and branch morphogenesis during Drosophila tracheal development. [FBrf0105788]
Kuhnlein and Schuh, 1996, Development 122(7): 2215--2223
Dual function of the region-specific homeotic gene spalt during Drosophila tracheal system development. [FBrf0088351]