A Database of Drosophila Genes & Genomes

FB2013_03, released May 7th, 2013
 

Allele Dmel\banEP3622

General Information
SymbolDmel\banEP3622SpeciesD. melanogaster
NameFlyBase IDFBal0144429
Feature typealleleAssociated geneDmel\ban
Also Known AsEP(3)3622
Allele classhypomorphic allele - genetic evidence
MutagenP-element activity
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Description
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FB2013_03
FB2013_02
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The "EP(3)3622" line contains two P{EP} elements (P{EP}banEP3622a and P{EP}banEP3622b) inserted in a back-to-back orientation at 61C in contig AE003469.
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Cytology
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Expression of ban[EP3622] under the control of Scer\GAL4[tim.PE] results in a dramatically lengthened circadian period when locomotor activity is assayed (the increase is almost 3 hours). Expression of ban[EP3622] under the control of Scer\GAL4[P2.4.Pdf] results in a lengthened circadian period when locomotor activity is assayed.
ban[EP3622] eye disc clones show no cell death.
ban[EP3622] homozygotes or ban[EP3622]/Df(3L)ban[Δ1] hemizygotes survive to adulthood and show wild-type levels of apoptosis. Imaginal discs in ban[EP3622] homo- and hemizygotes or ban[EP3622]/ban[L1170a] transheterozygotes show significantly higher levels of AO staining than wild-type, indicating that these mutants undergo IR-induced apoptosis more readily than wild-type. Phenotypes for ban[EP3622] homozygotes are more severe than those of ban[EP3622]/Df(3L)ban[Δ1] hemizygotes. ban[EP3622] homozygotes, ban[EP3622]/ban[L1170a] transheterozygotes and ban[EP3622]/Df(3L)ban[Δ1] hemizygotes exposed to 0-8000 R of X-rays show decreased survival to adulthood after irradiation.
ban[L1170a]/ban[EP3622] mutant germline stem cells (GSCs) show maintenance and cell division defects when clones are generated during adult stages. When ban[L1170a]/ban[EP3622] clones are generated in larval and pupal stages the GSC loss is less severe. ban[EP3622]/Df(3L)ban[Δ1] mutant germline stem cells (GSCs) show maintenance and cell division defects when clones are generated during adult stages. When ban[EP3622]/Df(3L)ban[Δ1] clones are generated in larval and pupal stages the GSC loss is less severe.
Expression of banEP3622 in the developing eye, under the control of Scer\GAL4GMR.PF, causes the generation of extra interommatidial pigment and bristle cells.
Expression of banEP3622 in the eye, driven by Scer\GAL4GMR.PF, leads to eye overgrowth, due mainly to excess interommatidial cells. The number of cells undergoing apoptosis is reduced in these eyes, but this reduction is not great enough to account for all of the extra cells. The morphology of the eye is not affected.
Cells in the posterior compartment of the wing are 30.1% smaller than in controls in flies expressing banEP3622 under the control of Scer\GAL4en-e16E. The area of the posterior compartment is increased by 19.1% in these flies compared to controls, and the number of cells in the posterior compartment is increased by 68.7%. The number of cells in the anterior compartment in flies expressing banEP3622 under the control of Scer\GAL4en-e16E is reduced by 12.7% compared to controls. Expression of banEP3622 under the control of Scer\GAL4ap-md544 results in a large increase in notum size and reduction in cell size in the notum. The density of chaetae in the acrostical region is increased by 17.5% compared to controls and is associated with a lower number of cells between microchaetae (4.52 compared to 5.34 in wild type). The total number of chaetae per heminotum is increased by 49% compared to wild type.
The body mass of banEP3622/Df(3L)emc flies is 68% that of control flies. The wing blade surface area is 84.3% that of controls. The body mass of banEP3622/Df(3L)banΔ1 flies is 80% that of control flies. The wing blade surface area is 89.6% that of controls. Cell size in the wing blade is 99.2% of controls and cell number in the wing blade is 91.1% that of controls. Heterozygotes have a normal body mass compared to controls. The body mass of homozygotes is 82% that of control flies. The wing blade surface area is 91.2% that of controls. Cell size in the wing blade is 100% of controls and cell number in the wing blade is 91.1% that of controls. The body mass of banEP3622/banUY3207 flies is 84% that of control flies. The wing blade surface area is 92.6% that of controls. Cell size in the wing blade is 99.3% of controls and cell number in the wing blade is 92.8% that of controls.
The body mass of banEP3622/Df(3L)banΔ1 adults is only 78% of that of control flies. The body mass of homozygous adults is only 80% of that of control flies. The wing blade area of banEP3622/Df(3L)banΔ1 flies is only 90% of that of controls. This decrease is entirely due to a decrease in the number of cells, and is not due to a decrease in cell size. Expression of banEP3622 under the control of Scer\GAL4en-e16E results in a significant increase in the ratio of posterior:anterior area of the wing compared to control wings. There is a statistically significant increase in the overall size of the wing compared to controls. Expression of banEP3622 under the control of Scer\GAL4GMR.PF results in roughening and bulging of the eye, suggesting extensive outgrowth. Clones of cells expressing banEP3622 under the control of Scer\GAL4Act5C.PP show the same distribution of cells in G1, S and G2 phases compared to wild-type cells, but the cells are 3% larger than the control cells. The cell doubling time is significantly reduced compared to controls. Expression of banEP3622 under the control of Scer\GAL4Bx-MS1096 results in significant outgrowth of the entire wing, with the wings curving downwards.
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Scer\GAL4Bx-MS1096, banEP3622 has wing phenotype, non-suppressible by Cdk43/Cdk43
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Expression of ban[EP3622] in wing disc clones (under the control of Scer\GAL4[tub.PU]) in yki[B5] mutant animals increases clone size compared to yki[B5] alone. Co-expression of dm[Scer\UAS.cZa] in this background fails to rescue the growth defect of yki[B5] mutant clones, and growth rates are similar to when ban[EP3622] is expressed alone in yki[B5] mutant discs. However, despite the small size of the clones, cell and nucleolar size are increased when dm[Scer\UAS.cZa] and ban[EP3622] are expressed in yki[B5] wing discs.
A significant increase in the level of cell death is observed in Rbf[15aΔ];ban[EP3622] double mutant eye disc clones.
Coexpression of banEP3622 with hpoScer\UAS.cUa, both driven by Scer\GAL4GMR.PF, significantly suppresses the eye defects and eliminates the apoptosis caused by hpo overexpression. Coexpression of banEP3622 with hpoScer\UAS.cUa in the wing, driven by Scer\GAL4nub-AC-62, suppresses the Scer\GAL4nub-AC-62>hpoScer\UAS.cUa small wing phenotype. Coexpression of CycEScer\UAS.cRa with banEP3622, under the control of Scer\GAL4GMR.PF, enhances the extra ommatidial cell phenotype seen in Scer\GAL4GMR.PF>banEP3622 pupal retinae. This phenotype is not enhanced by thScer\UAS.cHa. Coexpression of banEP3622, CycEScer\UAS.cRa and thScer\UAS.cHa, under the control of Scer\GAL4GMR.PF, causes a large increase in interommatidial, cone and photoreceptor cells.
Expression of banEP3622, under the control of Scer\GAL4tub, in ykiΔ.w mutant clones generated in the wing disc rescues the lethality of these clones, resulting in clones that are larger than those generated in wild-type controls.
When E2fScer\UAS.cNa and DpScer\UAS.cDa are driven by Scer\GAL4ptc-559.1 cells in the wing disc overproliferate. The addition of banEP3622 enhances this phenotype. Fewer cells show pyknotic nuclei, though many cells still drop out of the epithelial layer.
EP3219EP3219 combined with banEP3622 has little or no effect on growth. The wing overgrowth phenotype caused by expression of banEP3622 under the control of Scer\GAL4Bx-MS1096 is not altered by Cdk43/Cdk43. Co-expression of banEP3622 almost completely suppresses the eye phenotype caused by expression of exScer\UAS.cBa under the control of Scer\GAL4hs.2sev.
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Reduction of ban activity through ban[EP3622]/Df(3L)ban[Δ1] enhances Hsap\MJD[tr.Q78.GMR.T:Ivir\HA1]-induced degeneration, such that flies are now born with more neuronal loss.
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Research paper
Neto-Silva et al., 2010, Dev. Cell 19(4): 507--520
Evidence for a Growth-Stabilizing Regulatory Feedback Mechanism between Myc and Yorkie, the Drosophila Homolog of Yap. [FBrf0212043]
Kadener et al., 2009, Genes Dev. 23(18): 2179--2191
A role for microRNAs in the Drosophila circadian clock. [FBrf0209082]
Tanaka-Matakatsu et al., 2009, Dev. Biol. 326(2): 347--356
Regulation of apoptosis of rbf mutant cells during Drosophila development. [FBrf0207165]
Yang et al., 2009, PLoS Genet. 5(4): e1000444
The bantam microRNA is associated with drosophila fragile X mental retardation protein and regulates the fate of germline stem cells. [FBrf0207703]
Jaklevic et al., 2008, Dev. Biol. 320(1): 122--130
Modulation of ionizing radiation-induced apoptosis by bantam microRNA in Drosophila. [FBrf0207139]
Shcherbata et al., 2007, Cell Stem Cell 1(6): 698--709
Stage-specific differences in the requirements for germline stem cell maintenance in the Drosophila ovary. [FBrf0202622]
Bilen et al., 2006, Mol. Cell 24(1): 157--163
MicroRNA pathways modulate polyglutamine-induced neurodegeneration. [FBrf0192284]
Meyer et al., 2006, PLoS Genet. 2(8): e134
Overlapping functions of argonaute proteins in patterning and morphogenesis of Drosophila embryos. [FBrf0194224]
Nolo et al., 2006, Curr. Biol. 16(19): 1895--1904
The bantam microRNA is a target of the hippo tumor-suppressor pathway. [FBrf0194704]
Thompson and Cohen, 2006, Cell 126(4): 767--774
The hippo pathway regulates the bantam microRNA to control cell proliferation and apoptosis in Drosophila. [FBrf0193861]
Resino and Garcia-Bellido, 2004, Mech. Dev. 121(4): 351--364
Drosophila genetic variants that change cell size and rate of proliferation affect cell communication and hence patterning. [FBrf0174883]
Brennecke et al., 2003, Cell 113(1): 25--36
bantam encodes a developmentally regulated microRNA that controls cell proliferation and regulates the proapoptotic gene hid in Drosophila. [FBrf0158764]
Raisin et al., 2003, Genetics 164(3): 1015--1025
A new genetic locus controlling growth and proliferation in Drosophila melanogaster. [FBrf0160859]
Hipfner et al., 2002, Genetics 161(4): 1527--1537
The bantam gene regulates Drosophila growth. [FBrf0152024]