Small deletion that removes 3-12kb of genomic DNA, including the first ex exon.
lethal (with Df(2L)BSC107)
The relative size of somatic MARCM clones mutant for exe1 in third instar larval wing discs is significantly increased compared to control clones in wild-type discs.
Adult eyes containing exe1 homozygous somatic clones (induced by the eyFLP method) display overgrowth and folding phenotype not only in the eyes but also at the base of antennae.
exe1/+ does not have any affect on cell growth or proliferation in the adult posterior midgut, as compared to controls.
exe1/exe1 eyes (created by the EGUF method in otherwise heterozygous animals) contain significantly increased number of interomatidial cells (IOC) in the pupal retina compared to wild-type and the adult eyes are smaller and misshapen.
exe1/exe1 mutants rarely survive to third instar larval stage (but never to adulthood) and the survivors display decreased number of photoreceptor cells in the eye disc compared to wild-type.
The wing discs of exe1/exAP50 transheterozygotes are overgrown compared to controls.
Cells in homozygous clones in the wing disc accumulate F-actin near the apical surface.
exe1 mutant larvae show a decrease in the number of glial cells in the eye disc and a lack of glial overgrowth.
Eyes that are partially homozygous for exe1 (generated using the eyFLP method without cell lethal) show mild overgrowth compared to controls.
Pupal retinae composed of homozygous exe1 mutant cells show an increase in the number of interommatidial cells.
exe1 homozygous mutant clones generated in the male germline develop normally. 16 cells are observed per cyst, and cell size and morphology are indistinguishable from neighbouring control cells. However, non-autonomous germline over-proliferation is observed in non-mutant spermatogonial cysts.
exe1 mutant wing discs collected 36-48 hours after the L2-L3 molt are overgrown.
exe1 mutants do not exhibit any defect in photoreceptor differentiation.
Mutant exe1 clones, generated through FLP-induced recombination are significantly larger than their wild-type twin-spots at the larval stage.
exe1 pupal retinas exhibit an increase in secondary cells that are normally eliminated by apoptosis (approximately 8 in exe1 clones, compared to 6 in wild-type).
Somatic clones of homozygous exe1 tissue in the eye exhibit ommatidial chirality inversions, misrotations and minor defects in photoreceptor differentiation. Somatic clones in the pupal imaginal disc produces a disruption of the well-ordered pattern of R3/R4 photoreceptor precursor cells. Clones also exhibit a significant growth advantage over the wild-type counterparts in larval and pupal discs, and in the adult eye. In the case of large clones the tissue protrudes out of the plane of the disc. Homozygous exe1 animals survive until the pharate adult stage. The eye discs are disproportionately large in comparison with the antennal discs of the same complex, reaching several times the size of wild-type larvae. Anterior regions of mutant discs lose their 'flat' character, leading to the formation of additional tissue flaps. In these discs the morphogenetic furrow moves across the mutant tissue and cell fate determination does take place.
Clonal analysis revealed no effect on tissues other than the wing. Mutant clones generated 3-5 days AEL are more than twice as large as their wild type twins, but show no significant differences depending on the position in the wing. ex function is not required at or after 5-6 days AEL.
Pharate adults have a massive head, wing and leg defects. Most common leg defect is missing distal tarsal segments including claw organ, with the remaining proximal tarsal segments have supernumerary bristles. Wing disc of third instar larvae is enlarged, and by day 5 has formed an extra fold. Overgrowth also occurs in the haltere discs, and the eye disc and leg discs show signs of degeneration.
exe1 has visible | somatic clone phenotype, enhanceable by kibradel
exe1 has hyperplasia phenotype, enhanceable by MycUAS.cZa/Scer\GAL4hh.PU
exe1, mtmnull has increased cell number | P-stage | somatic clone - tissue specific phenotype, suppressible | partially by Scer\GAL4αTub84B.PL/Pi3K68DHMS01296
exe1, mtmnull has increased size | somatic clone | adult stage phenotype, suppressible | partially by Scer\GAL4αTub84B.PL/Pi3K68DHMS01296
exe1, mtmnull has increased cell number | P-stage | somatic clone - tissue specific phenotype, suppressible | partially by RokHMS01311/Scer\GAL4αTub84B.PL
exe1, mtmnull has increased size | somatic clone | adult stage phenotype, suppressible by RokHMS01311/Scer\GAL4αTub84B.PL
exe1, mtmnull has increased cell number | P-stage | somatic clone - tissue specific phenotype, suppressible | partially by Scer\GAL4αTub84B.PL/Rab11Q70L.UASp.YFP
exe1, mtmnull has increased size | somatic clone | adult stage phenotype, suppressible by Scer\GAL4αTub84B.PL/Rab11Q70L.UASp.YFP
exe1, mtmnull has increased cell number | P-stage | somatic clone - tissue specific phenotype, suppressible | partially by Scer\GAL4αTub84B.PL/Hsap\MTMR2UAS.cHa
exe1, mtmnull has increased size | somatic clone | adult stage phenotype, suppressible | partially by Scer\GAL4αTub84B.PL/Hsap\MTMR2UAS.cHa
exe1 has increased mortality during development phenotype, suppressible by kibraUbi-p63E.GFP,Tag:FLAG
exe1 has abnormal size | somatic clone | third instar larval stage phenotype, suppressible by Scer\GAL4Tub.PU/kibraUASp.cGa
exe1 has visible | adult stage phenotype, suppressible by ZyxΔ41/ZyxΔ41
exe1 has abnormal size | somatic clone | adult stage phenotype, suppressible by tai61G1/tai61G1
exe1 has visible | somatic clone phenotype, suppressible by kibraEP747/Scer\GAL4Tub.PU
exe1 has visible | somatic clone | adult stage phenotype, non-suppressible by Ack10b/Ack10b
exe1 has visible | somatic clone | adult stage phenotype, non-suppressible by AckUAS.Tag:V5/Scer\GAL4Ubi.PU
exe1 has increased cell number | larval stage phenotype, non-suppressible by dachsGC13
exe1/exe1 is an enhancer of increased size | adult stage | somatic clone - tissue specific phenotype of mtmnull
exe1/exe1 is an enhancer of increased cell number | P-stage | somatic clone - tissue specific phenotype of mtmnull
exe1 is an enhancer of visible | somatic clone phenotype of kibradel
ex[+]/exe1 is an enhancer of partially lethal - majority die phenotype of ft8/ftG-rv
ex[+]/exe1 is an enhancer of visible phenotype of dshhs.sev.B
exe1 is a suppressor of decreased size | adult stage phenotype of PatroninGD11946, Scer\GAL4en.PU
exe1 is a suppressor of visible | adult stage phenotype of PatroninGD11946, Scer\GAL4en.PU
exe1/exe1 is a suppressor | somatic clone of abnormal size | somatic clone | third instar larval stage phenotype of Scer\GAL4Tub.PU, kibraUASp.cGa
ex[+]/exe1 is a suppressor of decreased cell number | somatic clone | cell non-autonomous phenotype of Apc2g10, ApcQ8
ex[+]/exe1 is a suppressor of increased cell number | somatic clone phenotype of Apc2g10, ApcQ8
exe1, mtmnull has increased size | somatic clone | adult stage phenotype
Rab11S25N.UASp.YFP, Scer\GAL4αTub84B.PL, exe1 has increased cell number | P-stage | somatic clone - tissue specific phenotype
exe1, mtmΔC has increased size | adult stage | somatic clone - tissue specific phenotype
exe1, mtmΔC has increased cell number | P-stage | somatic clone - tissue specific phenotype
exe1, mtmΔN has increased size | adult stage | somatic clone - tissue specific phenotype
exe1, mtmΔN has increased cell number | P-stage | somatic clone - tissue specific phenotype
exe1, kibraUbi-p63E.GFP,Tag:FLAG has fertile phenotype
exe1, kibraUbi-p63E.GFP,Tag:FLAG has visible | adult stage phenotype
exe1, kibraUbi-p63E.GFP,Tag:FLAG has increased size | adult stage phenotype
ex[+]/exe1, kibraUbi-p63E.GFP,Tag:FLAG has visible | adult stage phenotype
ex[+]/exe1, kibraUbi-p63E.GFP,Tag:FLAG has decreased size | adult stage phenotype
exe1, ft8 has visible | somatic clone phenotype
exe1, ft8 has partially lethal - majority die | somatic clone phenotype
RtGEFp1036, exe1, ft8 has lethal | somatic clone phenotype
exe1, kibra1/kibra3 has lethal | somatic clone | pupal stage phenotype
MycUAS.cZa, Scer\GAL4hh.PU, exe1 has increased cell size phenotype
Mer4, exe1 has hyperplasia | somatic clone phenotype
Mer4, exe1 has visible | recessive | somatic clone phenotype
Mer4, exe1 has neoplasia | somatic clone | adult stage phenotype
exe1 has eye | somatic clone phenotype, enhanceable by kibradel
exe1 has ommatidium | somatic clone phenotype, enhanceable by kibradel
exe1 has eye | adult stage | somatic clone phenotype, non-enhanceable by AckUAS.Tag:V5/Scer\GAL4Ubi.PU
exe1 has antenna | adult stage | somatic clone phenotype, non-enhanceable by AckUAS.Tag:V5/Scer\GAL4Ubi.PU
exe1 has interommatidial bristle | somatic clone phenotype, non-enhanceable by crb82-04
exe1 has phenotype, non-enhanceable by Rho1V14.sev
exe1 has phenotype, non-enhanceable by Rac1V12.hs.sev
exe1, mtmnull has interommatidial cell | increased number | P-stage | somatic clone - tissue specific phenotype, suppressible | partially by Scer\GAL4αTub84B.PL/Pi3K68DHMS01296
exe1, mtmnull has mesonotum | somatic clone | adult stage phenotype, suppressible | partially by Scer\GAL4αTub84B.PL/Pi3K68DHMS01296
exe1, mtmnull has interommatidial cell | increased number | P-stage | somatic clone - tissue specific phenotype, suppressible | partially by RokHMS01311/Scer\GAL4αTub84B.PL
exe1, mtmnull has mesonotum | somatic clone | adult stage phenotype, suppressible by RokHMS01311/Scer\GAL4αTub84B.PL
exe1, mtmnull has interommatidial cell | increased number | P-stage | somatic clone - tissue specific phenotype, suppressible | partially by Scer\GAL4αTub84B.PL/Rab11Q70L.UASp.YFP
exe1, mtmnull has mesonotum | somatic clone | adult stage phenotype, suppressible by Scer\GAL4αTub84B.PL/Rab11Q70L.UASp.YFP
exe1, mtmnull has interommatidial cell | increased number | P-stage | somatic clone - tissue specific phenotype, suppressible | partially by Scer\GAL4αTub84B.PL/Hsap\MTMR2UAS.cHa
exe1, mtmnull has mesonotum | somatic clone | adult stage phenotype, suppressible | partially by Scer\GAL4αTub84B.PL/Hsap\MTMR2UAS.cHa
exe1 has wing disc | somatic clone | third instar larval stage phenotype, suppressible by Scer\GAL4Tub.PU/kibraUASp.cGa
exe1 has eye | somatic clone | adult stage phenotype, suppressible by ZyxΔ41/ZyxΔ41
exe1 has interommatidial cell | increased number | somatic clone | pupal stage phenotype, suppressible by ZyxΔ41/ZyxΔ41
exe1 has eye disc | third instar larval stage phenotype, suppressible by ZyxΔ41/ZyxΔ41
exe1 has wing | somatic clone phenotype, suppressible by tai61G1/tai61G1
exe1 has adult head | somatic clone phenotype, suppressible by tai61G1/tai61G1
exe1 has eye | somatic clone phenotype, suppressible by tai61G1/tai61G1
exe1 has eye | somatic clone phenotype, suppressible by kibraEP747/Scer\GAL4Tub.PU
exe1 has eye | somatic clone | adult stage phenotype, non-suppressible by Ack10b/Ack10b
exe1 has antenna | somatic clone | adult stage phenotype, non-suppressible by Ack10b/Ack10b
exe1 has interommatidial bristle | somatic clone phenotype, non-suppressible by crb82-04
exe1 has wing disc | larval stage phenotype, non-suppressible by dachsGC13
exe1 has phenotype, non-suppressible by Rac1V12.hs.sev
exe1 has phenotype, non-suppressible by Rho1V14.sev
exe1/exe1 is an enhancer of eye | somatic clone - tissue specific phenotype of mtmnull
exe1/exe1 is an enhancer of interommatidial cell | P-stage | increased number | somatic clone - tissue specific phenotype of mtmnull
exe1 is an enhancer of eye | somatic clone phenotype of kibradel
exe1 is an enhancer of ommatidium | somatic clone phenotype of kibradel
exe1 is an enhancer of interommatidial bristle | increased number phenotype of Mer4
ex[+]/exe1 is an enhancer of ommatidium phenotype of dshhs.sev.B
ex[+]/exe1 is an enhancer of eye photoreceptor cell phenotype of dshhs.sev.B
ex[+]/exe1 is an enhancer of eye phenotype of dshhs.sev.B
exe1 is a non-enhancer of phenotype of Rho1V14.sev
exe1 is a non-enhancer of phenotype of Rac1V12.hs.sev
exe1 is a suppressor of wing phenotype of PatroninGD11946, Scer\GAL4en.PU
exe1/exe1 is a suppressor | somatic clone of wing disc | somatic clone | third instar larval stage phenotype of Scer\GAL4Tub.PU, kibraUASp.cGa
ex[+]/exe1 is a suppressor of intestinal stem cell of posterior adult midgut epithelium | somatic clone | cell non-autonomous phenotype of Apc2g10, ApcQ8
ex[+]/exe1 is a suppressor of intestinal stem cell of posterior adult midgut epithelium | somatic clone phenotype of Apc2g10, ApcQ8
exe1 is a non-suppressor of phenotype of Rac1V12.hs.sev
exe1 is a non-suppressor of phenotype of Rho1V14.sev
exe1, mtmnull has mesonotum | somatic clone | adult stage phenotype
exe1, mtmnull has eye | somatic clone - tissue specific phenotype
exe1, mtmΔC has eye | somatic clone - tissue specific phenotype
exe1, mtmΔC has interommatidial cell | increased number | P-stage | somatic clone - tissue specific phenotype
exe1, mtmΔN has eye | somatic clone - tissue specific phenotype
exe1, mtmΔN has interommatidial cell | increased number | P-stage | somatic clone - tissue specific phenotype
exe1, kibraUbi-p63E.GFP,Tag:FLAG has wing phenotype
ex[+]/exe1, kibraUbi-p63E.GFP,Tag:FLAG has wing phenotype
exe1, ft8 has ptilinum | somatic clone phenotype
exe1, tai61G1 has wing disc | third instar larval stage phenotype
exe1, kibraΔ32/kibra[+] has follicle cell phenotype
exe1, kibra1/kibra3 has head | somatic clone | pupal stage phenotype
exe1, kibra1 has eye disc | somatic clone phenotype
exe1, ft8 has interommatidial cell | increased number | pupal stage phenotype
Mer4, exe1 has interommatidial cell | somatic clone | pupal stage phenotype
Mer4, exe1 has eye photoreceptor cell | somatic clone phenotype
Df(1)N-54l9/Mer4, exe1 has wing | somatic clone phenotype
Mer4, exe1 has ommatidium | somatic clone phenotype
Mer4, exe1 has eye | somatic clone phenotype
Mer4, exe1 has wing vein | somatic clone phenotype
Mer4, exe1 has posterior crossvein | somatic clone phenotype
Mer4, exe1 has wing cell | somatic clone phenotype
Mer4, exe1 has eye disc morphogenetic furrow | larval stage phenotype
The increased relative size of somatic MARCM clones mutant for exe1 in third instar larval wing discs (as compared to wild-type clones in control discs) is suppressed by expression of kibraScer\UAS.P\T.cGa in the mutant clones (driven by Scer\GAL4tub.PU), which on its own produces clones of reduced size.
The overgrowth phenotype observed in adult eye and antennae containing exe1 homozygous mutant somatic clones (induced by the eyFLP method) is not changed when the clones are induced in Ack10b/Ack10b mutant background or when they also express AckScer\UAS.T:SV5\V5 under the control of Scer\GAL4Ubi.PU.
The supernumerary inter-ommatidial cells in the pupal retina as well as the smaller size and altered eye shape in adults characteristic for exe1/exe1 eyes (created by the EGUF method in otherwise heterozygous animals) can be suppressed by combination with ZyxΔ41/ZyxΔ41.
The low survival rate of exe1/exe1 mutants to third instar larval stage can be improved by combination with ZyxΔ41/ZyxΔ41 and some of the double mutants can survive even to adulthood. The decreased number of photoreceptor cells in the eye discs characteristic for exe1/exe1 mutants is also restored in the surviving exe1;ZyxΔ41 double mutant third instar larvae.
The overgrowth of the wing discs characteristic for exe1/exAP50 transheterozygotes can be suppressed by combination with ZyxΔ41/ZyxΔ41.
tai61G1/tai61G1, exe1/exe1 mosaic adult wings are smaller than exe1/exe1 mosaic wings, although the wings are still a broader shape than controls; tai61G1/tai61G1, exe1/exe1 clones in the L3 wing disc appear smaller than age-matched exe1/exe1 clones; tai61G1/tai61G1, exe1/exe1 mosaic heads have suppressed head and eye overgrowth as compared to exe1/exe1 clones.
Expression of ykiNIG.4005R under the control of Scer\GAL4unspecified in exe1 clones in the wing disc does not prevent apical accumulation of F-actin in the mutant cells.
Pupae with mosaic heads that are largely doubly mutant for exe1/exe1 and kibra1/kibra3 (clones induced using the eyFLP method without cell lethal) do not eclose and normal head structures are displaced by overgrown tissue.
exe1 kibra1 double mutant clones in the eye imaginal disc are very large and invariably adopt a rounded shape.
dmScer\UAS.cZa overexpression clones (under the control of Scer\GAL4hh.PU) found in the posterior of the wing disc strongly enhance the proliferative activity of exe1 mutant cells. In addition these cells are larger in dmScer\UAS.cZa clones than in a wild-type background.
exe1 allows recovery of Df(1)su(s)R194/+ clones in the adult eye in animals with mosaic eyes containing two genotypes of cells with respect to RpL36; cells which are Df(1)su(s)R194/+ and cells in which the haplo-insufficiency of Df(1)su(s)R194/+ for RpL36 has been rescued by RpL36+t4 (in a wild-type background the Df(1)su(s)R194/+ clones are eliminated by cell competition and are not seen in the adult eye in these animals).
Somatic clones homozygous for Mer4 and exe1 in the antenna or in the dorsal thorax are massively overgrown. In the mid-pupal retina, these clones contain a large excess of inter-ommatidial cells. In the late third instar eye disc, cells in these clones show increased levels of mitosis after (posterior to) the second mitotic wave. Later, at around 25 hours APF, the widespread apotosis seen throughout the developing retina in wild-type and heterozygous cells, is largely suppressed in these clones.
Mer4; exe1 somatic clones in contact with the posterior or lateral margin of the eye fail to produce photoreceptors. Those somatic clones located in the middle of the eye field can produce photoreceptors.
Mer4; exe1 double mutant clones exhibit defects in membrane trafficking of proteins such as N and Egfr.
Df(1)N-54l9 Mer4; exe1 triple transheterozygous mutants suppress the Df(1)N-54l9 heterozygous wing notch phenotype.
The eye phenotype seen in dshhs.sev.B flies is dominantly enhanced by the addition of exe1 due to an increase in unscorable ommatidia (missing one or more photoreceptors.
Dominantly enhances the head phenotype of Mer3 hemizygotes. Both vein and intervein cells can differentiate in Mer4; exe1 double mutant clones in the wing. Clones that intersect the position of the posterior crossvein disrupt its development. Clones in the position of the anterior crossvein develop normally. Within the mutant intervein and vein clones, apparent defects in proliferation control are seen; in the proximal region of the wing, clonal vein tissue forms a raised protrusion. In other regions of the wing, bulges in the veins are also seen, although more frequently vein clones are merely broadened when compared with the surrounding vein. In the intervein regions, the clonal tissue appears to bulge and crinkle within the confines of the normal tissue, suggesting overproliferation. Cells within the intervein clones appear to differentiate as intervein cells, however, the cuticle deposited at the base of each wing hair within the clone appears to be thickened, and is distinct from cuticle produced by either the surrounding heterozygous intervein or vein cells. Mer4; exe1 double mutant clones in the eye appear to disrupt the progression of the morphogenetic furrow, being seen either as small scars with associated clusters of bristles or as elongated scars and associated indentations running from within the eye field towards the anterior margin. These clones do not differentiate ommatidia. The clones are often associated with overproliferated head cuticle.
An allelic series can be defined for ex alleles with respect to viability, eclosion rate and penetrance of ex wing phenotype. Going from most to least severe: exe1 >= exl2ey > exe2 > exe6 > ex697 > ex1.