Allele Dmel\RelE20
| General Information | |||
|---|---|---|---|
| Symbol | Dmel\RelE20 | Species | D. melanogaster |
| Name | FlyBase ID | FBal0101572 | |
| Feature type | allele | Associated gene | Dmel\Rel |
| Also Known As | RelishE20 | ||
| Allele class | loss of function allele | ||
| Mutagen | Delta2-3 | ||
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| Description |
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| FB2013_03 | |||
| FB2013_02 | |||
| All updates | Click here to see a list of all updates to this record from FB2010_08 and on. | ||
Nature of the Allele
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| Allele class | |||
| Mutagen | |||
| Mutations Mapped to the Genome | |||
Type Location Additional Notes References | |||
| Associated Sequence Data | |||
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EMBL / GenBank | DNA sequence Protein sequence Name | ||
| UniProtKB/Swiss-Prot | |||
| UniProtKB/TrEMBL | |||
| Progenitor genotype | |||
| Nature of the lesion | Statement Reference | ||
| Cytology | |||
Phenotypic Data
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Phenotypic Class
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(Kim et al., 2007, Kleino et al., 2008, Hedengren et al., 1999, Leulier et al., 2000, Vodovar et al., 2005, Lu et al., 2001, Ryu et al., 2006, Tang et al., 2006, Kim et al., 2006, Brun et al., 2006, Mueller et al., 2007, Buchon et al., 2009, Costa et al., 2009, Leulier et al., 2006, Chen et al., 2010, Geuking et al., 2009, Gendrin et al., 2009, Overend et al., 2012, Vanha-Aho et al., 2012, Meinander et al., 2012, Ratnaparkhi et al., 2008) | |||
Phenotype Manifest In
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Detailed Description
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Statement Reference Mutant flies show greatly reduced survival compared to wild type after septic injury with Erwinia carotovora carotovora 15. Mutant flies show severely reduced survival in response to infection with E. coli/ Homozygous larvae have reduced levels of triacylglycerols compared to wild type. Mutant flies are sensitive to infection with E. cloacae, showing reduced survival after infection compared to the survival of wild-type controls. Mutant flies show a reduced survival rate compared to control flies after infection with either E.coli or P. aeruginosa. The mutant flies show normal resistance to infection with either S. aureus or A. fumigatus. Short term starvation improves the survival and containment of infection of Rel[E20] mutant flies following immune challenge with Gram-negative bacteria. Administering the NO Synthase-inhibitory arginine analog N-Nitro-L-Arginine- Methyl-Ester (L-NAME) but not its inactive enantiomer D-NAME, increased sensitivity to infection once again to levels expected for Rel[E20] mutants.
Infection with either gram-negative or gram-positive pathogens results in between 80-90% levels of death in Rel[E20] mutants. Short term starvation (STS)improves the survival rate considerably, with only 40% of STS flies dying in the same period. Rel[E20] mutant flies, infected by septic injury with a needle dipped in E. carotovora quickly succumb to the infection, whereas wild-type flies survive.
Rel[E20] mutant flies, infected by septic injury with a needle dipped in L. monocytogenes quickly succumb to the infection, whereas wild-type flies survive. Homozygous flies are more sensitive to Cricket Paralysis virus infection (after being injected with the virus) than control flies. Rel[E20] flies display an increase in susceptibility and mortality to genital infection (and subsequent infection throughout the body) compared to wild-type controls. There is no apparent difference between E.carotova infection on the outside of the genitalia in Rel[E20] and wild-type flies. However, upon dissection 24 hours after genital infection, bacteria are found in the body cavity of 19% of Rel[E20] mutant flies, while no bacteria are found inside wild-type flies. Consistent with this, there is a weak but significant mortality after genital infection in Rel[E20] flies. Mortality is observed in wild-type, and more strongly in Rel[E20] flies after genital infection with a strain of Pseudomonas aeruginosa. Rel[E20] flies have a reduced survival time compared to controls following challenge with the gram-negative bacteria Erwinia carotovora 15 (Ecc15). RelE20 mutants are highly sensitive to Gram-negative bacterial infection. Rel[E20] flies show significantly lower survival rates compared to control flies after infection with E.cloacae by septic injury. Rel[E20] mutants show 98% lethality one month after infection with a 1:1 mixture of M. luteus and E.coli, compared to 10% in wild-type. Rel[E20] mutant adults are more sensitive to fungal infection than wild type flies, with 100% lethality at 22 days. This compares to only 55-70% at 30 days in wild type. Rel[E20] mutant larvae show a reduced eclosion rate following injection with M. luteus and E. coli. Homozygous flies show ectopic macrochaetae in 38% of heminota analysed at 18[o]C (this phenotype is not seen at 25[o]C). In most cases, one ectopic macrochaeta is seen per heminotum.
Heterozygous flies show ectopic dorsocentral bristles in the medial notum in 26% of heminota at 18[o]C. Mutant flies are defective clearing bacteria after injection with E.coli. Homozygous virgin females have significantly higher bacterial counts per fly after infection with S.marcescens compared to their sibling control females. Mutant flies show reduced survival compared to control flies after infection with E.coli, but show normal levels of survival after infection with A.fumigatus. RelE20 flies exhibit a dramatically decreased viability when pricked with a needle dipped in a concentrated solution of gram-negative Esherichia coli or Erwinia carotovora. Rel[E20] mutant flies are highly susceptible to infection by gram-negative bacteria, and the majority of flies die within 25 hours of septic injury. High mortality levels are observed when RelE20 flies are fed on the ROS-resistant KNU53775 yeast strain but are not observed when they are fed on a standard yeast strain (W303). Wild-type flies do not show the same sensitivity to the KNU53775 strain.
RelE20 flies show increased mortality following infection with a Salmonella strain that overexpresses an antioxidant gene, but these flies show no increased mortality following infection with the same Salmonella strain when it does not overexpress the antioxidant gene.
Infection of RelE20 flies with an Escherichia coli strain that overexpresses an antioxidant gene leads to host death following severe damage to epithelial cells. Following infection, the midgut of these flies becomes visibly swollen, there is a morphological alteration of its columnar structure and epithelial cells degenerate. Although the visceral musculature appears to remain intact, intestinal cells adopt a flat morphology. This pathology is not seen in controls. Mutant flies show reduced survival rates compared to control flies after bacterial (E.carotovora) infection. Mutant animals, like wild-type, are significantly less susceptible to P.aeruginosa PA14 virulent strain after infection with the CF5 avirulent strain. RelE20 flies show a normal survival rate after natural infection with "Ecc15" (P.carotovorum.carotovorum). Mutant flies show similar survival rates as control flies following natural infection (feeding with contaminated food) with either "Ecc-15" (P.carotovorum.carotovorum), S.cerevisiae or M.luteus. RelE20 flies exhibit no significant altered sensitivity to viral infection compared to wild-type. RelE20 flies are susceptible to infection by Gram-negative bacteria (P.carotovorum.carotovorum). Mutant flies show the same level of resistance to B.bassiana (when their cuticles are coated with spores) as wild-type flies. RelE20 flies do not survive injection with E.cloacae β12 (injection with approximately 2 x 105 bacteria per fly), dying within 17 hours, in contrast to wild-type flies. Lower doses of bacteria also kill the mutant flies (even at an average estimated dose of 0.2 bacteria per fly). The flies are more sensitive to injection with the fungi G.candidum, D.uninucleata or M.anisopliae than wild-type flies, the majority of mutant flies being killed within a week. Larvae show an efficient encapsulation reaction when infested with the parasitoid wasp L.boulardi. Total hemocyte cell number and morphology appears normal and the lymph glands are also not visibly affected. The phagocytic activity of hemocytes after injection with bacteria is indistinguishable from wild type. | |||
External Data
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Interactions
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Phenotypic Class
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Enhanced by | |||
Statement Reference | |||
NOT suppressed by | |||
Statement Reference | |||
Enhancer of | |||
Statement Reference | |||
Suppressor of | |||
Statement Reference RelE20, Scer\GAL4S106-GS is a suppressor of immune response defective phenotype of PGRP-LEScer\UAS.T:Zzzz\FLAG, Scer\GAL4S106-GS | |||
NOT Suppressor of | |||
Statement Reference | |||
Other | |||
Statement Reference | |||
Phenotype Manifest In
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Enhanced by | |||
Statement Reference | |||
Enhancer of | |||
Statement Reference | |||
NOT Suppressor of | |||
Statement Reference | |||
Additional Comments
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Genetic Interactions
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Statement Reference Expression of edin[Scer\UAS.cVa] under the control of Scer\GAL4[c564] does not suppress the reduced survival of Rel[E20] flies after infection by E. cloacae. pirk[EY00723], Df(2R)PGRP-SC[Δ]; PGRP-LB[Δ], Rel[E20] flies, with impaired imd pathway activity due to the presence of Dredd or Rel mutations, exhibit an increased lifespan upon oral infection with E. carotovora bacteria, compared to pirk[EY00723], Df(2R)PGRP-SC[Δ]; PGRP-LB[Δ] flies. A Rel[E20] heterozygous background suppresses POSH mediated cell survival, resulting in reduced eye size in flies overexpressing POSH[Scer\UAS.cSa] and egr[Scer\UAS.cMa] in the developing eye disc under the control of Scer\GAL4[GMR.PF]. key[c02831]/+ ; Rel[E20]/+ double heterozygotes are more sensitive to Cricket Paralysis virus infection (after being injected with the virus) than control flies (neither single heterozygote shows increased sensitivity to Cricket Paralysis virus infection).
ird5[F22]/+ ; Rel[E20]/+ double heterozygotes are more sensitive to Cricket Paralysis virus infection (after being injected with the virus) than control flies. Rel[E20] does not suppress the notching phenotypes and low adult viability seen in homozygous PGRP-LF[200] mutants. Rel[E20]/+ Tollo[1]/+ double heterozygotes show ectopic bristles in 55% of heminota at 18[o]C, a significant enhancement compared to the single heterozygotes.
Dredd[EP1412]/+ Rel[E20]/+ double heterozygotes show ectopic bristles in 58% of heminota at 18[o]C, a significant enhancement compared to the single heterozygotes.
sc[Hw-Ua] Rel[E20] flies show one ectopic macrochaeta in 13% of heminota more than one ectopic macrochaeta in 85% of heminota analysed at 18[o]C. The lower survival rate seen in Jra[IA109] heterozygous flies after infection with E.coli is suppressed if the flies are also heterozygous for Rel[E20].
The lower survival rate seen in Dsp1[EP355] mutant flies after infection with E.coli is suppressed if the flies are also heterozygous for Rel[E20].
The lower survival rate seen in flies expressing Stat92E[dsRNA.Scer\UAS] (either using heat shock to drive expression from the minimal heat shock promoter in the P{UAS-Stat92E.RNAi} construct, or using a Scer\GAL4[da.G32] driver to drive expression) after infection with E.coli is suppressed if the flies are also heterozygous for Rel[E20]. The enhanced pathogen resistance phenotype of flies expressing PGRP-LE[Scer\UAS.T:Zzzz\FLAG] driven by Scer\GAL4[S106-GS] is completely suppressed by homozygous Rel[E20]. RelE20, imd1 double mutant animals are equally susceptible to P.aeruginosa PA14 virulent strain after infection with the CF5 avirulent strain. | |||
Xenogenetic Interactions
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Statement Reference | |||
Complementation & Rescue Data
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| Fails to complement | |||
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| Partially rescued by | |||
| Comments | Expression of RelScer\UAS.T:Zzzz\His6 in the intestine, driven by Scer\GAL4cad-em459, results in the increased survival rate of RelE20 flies to control levels following infection with the ROS-resistant KNU53775 yeast strain. However, expression of RelScer\UAS.T:Zzzz\His6 in the fat body, driven by Scer\GAL4c564, does not increase the survival rates of RelE20 flies following KNU53775 infection. In contrast, expression of RelScer\UAS.T:Zzzz\His6 increases survival rates of RelE20 flies in response to infection with Erwinia carotovora carotovora 15 when driven by Scer\GAL4c564 but does not increase survival when driven with Scer\GAL4cad-em459. RelScer\UAS.T:Zzzz\His6 rescues the immune defects of RelE20 flies when expressed under the control of Scer\GAL4hs.PB. | ||
Stocks
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| Bloomington | 9457 | ||
Notes on Origin
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| Discoverer | |||
Induced with: NmdmcE20. | |||
External Crossreferences & Linkouts
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Synonyms & Secondary IDs
( 9 ) | |||
| Reported As | |||
| Symbol Synonym | Df(3R)E20 Rel20 rel20E relE20 RelE20 (Kambris et al., 2006, Scherfer et al., 2006, Delaney et al., 2006, Ryu et al., 2006, Kambris et al., 2006, Kim et al., 2006, Matova and Anderson, 2006, Akhouayri et al., 2011, Zaidman-Remy et al., 2006, Gendrin et al., 2009, Kim et al., 2007, Buchon et al., 2009, Ayyar et al., 2007, Kim et al., 2006, Ha et al., 2009, Ha et al., 2009, Becker et al., 2010, Wiklund et al., 2009, Chen et al., 2010, Zaidman-Rémy et al., 2011, Choi et al., 2008, Paredes et al., 2011, Ratnaparkhi et al., 2008, Vanha-Aho et al., 2012) Rele20 relE20 RelishE20 | ||
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References
( 81 ) | |||
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Recent research papers ( 14 ) | |||
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Recent Updates
External Crossreferences & Linkouts