Search Strains

hpEx4271 [gbb-2(fosmid)::GFP + myo-2p::RFP]. Pick animals with red fluorescence to maintain. GBB-2::GFP expression in muscles and neurons. Reference: Lu Y, et al. 2022. Current Biology (In Press).

Heterozygotes are WT and segregate WT heterozygote, Uncs (unc-32 homozygotes), and Steriles (dcr-1 homozygotes).

Reduced lifespan, chemotaxis defective, co-suppression of transgenes in somatic cells. Maintain under normal conditions. Reference: Hundley HA, et al. RNA. 2008 Oct;14(10):2050-60.

Defective chemotaxis to volatile odorant. Low percentage (about 6%) have protruding vulva.

Reduced lifespan, chemotaxis defective, co-suppression of transgenes in somatic cells. Maintain under normal conditions. Reference: Hundley HA, et al. RNA. 2008 Oct;14(10):2050-60.

RNAi deficient. Maintain under normal conditions.

RNAi deficient. Maintain under normal conditions. Reference: Tonkin LA & BassBL. Science. 2003 Dec 5;302(5651):1725. Knight SW & Bass BL. Mol Cell. 2002 Oct;10(4):809-17.

Chemotaxis deficient. Transgenes are silenced in this background. Reference: Reich DP, et al. Genes Dev. 2018 Feb 1;32(3-4):271-282. NOTE: In the referenced publication, irregularities were noted in the adr-1(gv6);adr-2(gv42) null strain, which were ascribed to background mutationsint hat strain. This strain -- adr-1(uu49);adr-2(uu28) -- was generated Crispr/Cas9 targeted mutation and phenotypes are more consistent with another null strain, adr-1(tm668);adr-2(ok735).

RNAi deficient. Maintain under normal conditions. Reference: Tonkin LA & BassBL. Science. 2003 Dec 5;302(5651):1725.

RNAi deficient. Lacks RNA editing. Reference: Reich DP, et al. Genes Dev. 2018 Feb 1;32(3-4):271-282.

RNAi deficient. Lacks RNA editing. Reference: Reich DP, et al. Genes Dev. 2018 Feb 1;32(3-4):271-282.

ggIs1 [nrde-3p::3xFlag::GFP::nrde-3 ORF + unc-119(+)] IV. Nuclear GFP::NRDE-3 signal. Lacks RNA editing. Reference: Reich DP, et al. Genes Dev. 2018 Feb 1;32(3-4):271-282.

Enhanced RNAi. Lacks RNA editing. Vulval bursting. Low brood size. Triple mutants display bursting and low brood size phenotypes not observed in adr-1;adr-2 or rrf-3 parental strains. Reference: Reich DP, et al. Genes Dev. 2018 Feb 1;32(3-4):271-282.

RNAi deficient. Lacks RNA editing. Reference: Reich DP, et al. Genes Dev. 2018 Feb 1;32(3-4):271-282.

RNAi deficient. Lacks RNA editing. Reference: Reich DP, et al. Genes Dev. 2018 Feb 1;32(3-4):271-282.

ggIs1 [nrde-3p::3xFlag::GFP::nrde-3 ORF + unc-119(+)] IV. Nuclear GFP::NRDE-3 signal. Enhanced RNAi. Lacks RNA editing. Vulval bursting. Low brood size. Triple mutants display bursting and low brood size phenotypes not observed in adr-1;adr-2 or rrf-3 parental strains. Reference: Reich DP, et al. Genes Dev. 2018 Feb 1;32(3-4):271-282.

Enhanced RNAi. Lacks RNA editing. Vulval bursting. Low brood size. Triple mutants display bursting and low brood size phenotypes not observed in adr-1;adr-2 or rrf-3 parental strains. Reference: Reich DP, et al. Genes Dev. 2018 Feb 1;32(3-4):271-282.

Defective chemotaxis to volatile odorant.

Defective chemotaxis to volatile odorant. Low percentage (about 6%) have protruding vulva.

uuEx18 [dcr-1(wild-type) + dpy-30::mCherry]. Superficially wild-type. Reference: Welker N, et al. (2010) RNA 16:893-903.

uuEx19 [dcr-1(K39A) + dpy-30::mCherry]. Temperature-sensitive, sterile at 25C. Reference: Welker N, et al. (2010) RNA 16:893-903.

uuEx20 [dcr-1(D145N) + dpy-30::mCherry]. Temperature-sensitive, sterile at 25C. Reference: Welker N, et al. (2010) RNA 16:893-903.

uuEx21 [dcr-1(G492R) + dpy-30::mCherry]. Temperature-sensitive, sterile at 25C. Reference: Welker N, et al. (2010) RNA 16:893-903.

C. briggsae strain. Chubby. Moves poorly.

Unc. Tail abnormalities-twisted or knobbed. Recessive. M-MATING-NO SUCCESS.

Temperature sensitive. Sterile at 25C. Maintain at 15C. Do not distribute this strain; other labs should request it from the CGC. This strain cannot be distributed to commercial organizations. This strain cannot be used for any commercial purpose or for work on human subjects. [2/98: Craig Mello noticed a different embryonic phenotype in this strain as compared to the e2141 stock that Jim Priess obtained from England-the ABp fate appears WT.] [NOTE (11/16/10 - J. Hubbard): This strain is NOT synonymous with glp-1(e2144) as previously reported in Kodoyianni V, Maine EM, Kimble J. (1992) [Molecular basis of loss-of-function mutations in the glp-1 gene of Caenorhabditis elegans. Mol Biol Cell. 3,1199-213. PMID: 1457827]. As reported in Worm Breeders Gazette December 2010; 18(3), e2144 carries the mutation c2785t in exon 8, leading to the amino acid change L929F, whereas e2141 carries the mutations c2920t and a3610g in exon 8, leading to the amino acid changes R974C and T1204A.]

Hermaphrodites have abnormal truncated or blebbed tails, pale appearance, some excretory cell abnormalities, especially in adults. Males have variably abnormal tails, some are able to mate.

ar221 is a tra-2 ts allele. Strain will grow at 15C as Egl hermaphrodites. When grown at 25C, all animals mature into X males, many of which are fertile. Good source of pure XX mating males. ar221 isolated by Jane Hubbard.

Incompletely penetrant embryonic lethal at three-fold. Mild Mua. Abberant head epidermal morphology. PKA vab-21.

Lon. Sluggish Unc. Egl. Eat. Rubberband.

Unc. Although hermaphrodites appear WT in other ways, there are some problems with T cell lineages (affecting the phasmids) and tail cell fusions. Variably Dyf. Male tail tip morphogenesis is also defective, resulting in blobby, "leptoderan" tails. Males are infertile due to an inability to properly copulate.

Deficiency covers at least all of cosmid T23G4; right breakpoint may be in cosmid C47A4. Fails to complement tlp-1(bx85). Viable and fertile. Although hermaphrodites appear WT in other ways, there are some problems with T cell lineages (affecting the phasmids) and tail cell fusions. Variably Dyf. Male tail tip morphogenesis is also defective, resulting in blobby, "leptoderan" tails. Males are infertile due to an inability to properly copulate.

wrdSi23 [eft-3p::TIR1:F2A:mTagBFP:tbb2 3' UTR:: loxP] I. wrdSi23 is inserted at ttTi4348 (I: -5.32 cM). Pan-somatic expression of TIR1 co-factor for AID, and expression of AID*-tagged blue protein in somatic nuclei. Auxin-inducible degradation (AID*) tag inserted at C-terminus of endogenous unc-104 locus by CRISPR/Cas9. Can be used for auxin-induced immobilization of worms for live imaging. References: Cahoon CK, Libuda DE. G3 (Bethesda). 2021 Oct 19;11(11):jkab310. doi: 10.1093/g3journal/jkab310. PMID: 34534266; PMCID: PMC8527506. Ashley GE, et al. Genetics. 2021 Mar 31;217(3):iyab006. doi: 10.1093/genetics/iyab006. PMID: 33677541

wrdSi23 [eft-3p::TIR1:F2A:mTagBFP:tbb2 3' UTR:: loxP] I. wrdSi23 is inserted at ttTi4348 (I: -5.32 cM). Pan-somatic expression of TIR1 co-factor for AID, and expression of AID*-tagged blue protein in somatic nuclei. Auxin-inducible degradation (AID*) tag inserted at C-terminus of endogenous unc-18 locus by CRISPR/Cas9. Can be used for auxin-induced immobilization of worms for live imaging. References: Cahoon CK, Libuda DE. G3 (Bethesda). 2021 Oct 19;11(11):jkab310. doi: 10.1093/g3journal/jkab310. PMID: 34534266; PMCID: PMC8527506. Ashley GE, et al. Genetics. 2021 Mar 31;217(3):iyab006. doi: 10.1093/genetics/iyab006. PMID: 33677541

wrdSi22 [eft-3p::TIR1:F2A:mTagBFP::tbb2 3' UTR::SEC[LoxP + let-858 term + sqt-1(d) + hs::Cre + hygR + unc-54 term + LoxP]] I. wrdSi22 is inserted at ttTi4348 (-5.32 cM). Pick Rollers to maintain animals retaining the SEC in the insertion. SEC can be removed by heat shock-induced excision according to the protocol in Dickinson et. al. Genetics 2015. Pan-somatic expression of TIR1 co-factor for AID, and expression of AID*-tagged blue protein in somatic nuclei. Auxin-inducible degradation (AID*) tag inserted at N-terminus of endogenous unc-52 locus by CRISPR/Cas9. References: Cahoon CK, Libuda DE. G3 (Bethesda). 2021 Oct 19;11(11):jkab310. doi: 10.1093/g3journal/jkab310. PMID: 34534266; PMCID: PMC8527506. Ashley GE, et al. Genetics. 2021 Mar 31;217(3):iyab006. doi: 10.1093/genetics/iyab006. PMID: 33677541

Although hermaphrodites appear WT in other ways, there are some problems with T cell lineages (affecting the phasmids) and tail cell fusions. Variably Dyf. Male tail tip morphogenesis is also defective, resulting in blobby, "leptoderan" tails. Males are infertile due to an inability to properly copulate. tlp-1 encodes a nuclear protein with a single C2H2-type zinc finger domain and an N-terminal "SPLALLA" domain, similar to that of Sp1 transcription factors of vertebrates. The bx85 mutation involves a truncation of TLP-1 due to a frameshift caused by a 5-bp deletion.

wrdSi23 [eft-3p::TIR1:F2A:mTagBFP::tbb2 3' UTR:: loxP] I. Maintain at 16-20C. AID*::GFP tag inserted at N terminus of endogenous rpoa-2 locus. mKate2 tag inserted into the C-terminus of endogenous nucl-1 locus. Nucleolar mKate2 expression. This strain can be used for auxin-inducible degradation (AID) of RPOA-2 in somatic tissues. Reference: Mejia-Trujillo R, et al. bioRxiv 2025.05.07.652530; doi: https://doi.org/10.1101/2025.05.07.652530.

wrdSi23 [eft-3p::TIR1:F2A:mTagBFP::tbb2 3' UTR:: loxP] I. Maintain at 16-20C. AID*::GFP tag inserted at C-terminus of endogenous grwd-1 locus. This strain can be used for auxin-inducible degradation (AID) of GRWD-1 in somatic tissues. Reference: Mejia-Trujillo R, et al. bioRxiv 2025.05.07.652530; doi: https://doi.org/10.1101/2025.05.07.652530.

wrdSi23 [eft-3p::TIR1:F2A:mTagBFP::tbb2 3' UTR:: loxP] I. Maintain at 16-20C. AID*::GFP tag inserted at C-terminus of endogenous grwd-1 locus. mKate2 tag inserted into the C-terminus of endogenous nucl-1 locus. Nucleolar mKate2 expression. This strain can be used for auxin-inducible degradation (AID) of GRWD-1 in somatic tissues. Reference: Mejia-Trujillo R, et al. bioRxiv 2025.05.07.652530; doi: https://doi.org/10.1101/2025.05.07.652530.

wrdSi23 [eft-3p::TIR1:F2A:mTagBFP::tbb2 3' UTR:: loxP] I. Maintain at 16-20C. AID*::GFP tag inserted at N-terminus of endogenous rpoa-2 locus. This strain can be used for auxin-inducible degradation (AID) of RPOA-2 in somatic tissues in a set-2 mutant background. Reference: Mejia-Trujillo R, et al. bioRxiv 2025.05.07.652530; doi: https://doi.org/10.1101/2025.05.07.652530.

wrdSi23 [eft-3p::TIR1:F2A:mTagBFP::tbb2 3' UTR:: loxP] I. ieSi11 [syp-3p::EmGFP::syp-3::syp-3 3'UTR + Cbr-unc-119(+)] II. Maintain at 16-20C. AID*::GFP tag inserted at N-terminus of endogenous rpoa-2 locus. GFP::SYP-3 expression is readily detected in spermatocytes and oocytes in the germline, and localizes to the interface between paired homologous chromosomes during most of meiotic prophase. mKate2 tag inserted into the C-terminus of endogenous nucl-1 locus. Nucleolar mKate2 expression. This strain can be used for auxin-inducible degradation (AID) of RPOA-2 in somatic tissues. Reference: Mejia-Trujillo R, et al. bioRxiv 2025.05.07.652530; doi: https://doi.org/10.1101/2025.05.07.652530.

wrdSi23 [eft-3p::TIR1:F2A:mTagBFP::tbb2 3' UTR:: loxP] I. Maintain at 16-20C. AID*::GFP tag inserted at the C-terminus of the endogenous rpoa-1 locus. This strain can be used for auxin-inducible degradation (AID) of RPOA-1 and UNC-104 in somatic tissues. Reference: Mejia-Trujillo R, et al. bioRxiv 2025.05.07.652530; doi: https://doi.org/10.1101/2025.05.07.652530.

Temperature-sensitve sterile. Maintain at 15-20C. Superficially wild-type at permissive temperatures; contains large bubble-like structures on the inside in all stages (described as large early endosomes), reduced brood size. Sterile and very sick at 25°C with some single escapers that are sterile and sick themselves. Suppressors have been observed after long culturing over several months, periodically check for sterility at 25C.

naEx57 [lag-2p::FLP::let-858 3'UTR + ceh-22p::GFP]. Him. Derived by injection of plasmids pGC158 and pCW2.19. Reference: Voutov, R and Hubbard, EJ. Genetics 180(1):103-19 (2008).

Unc. Slightly Dpy. Tail whip knobbed at all stages except adult male (adult male tail tip slightly swollen). Variably Egl.

Dpy. Unc. Tail whip knobbed at all stages except adult male (adult male tail tip slightly swollen).

Unc. Roller. Tail whip knobbed at all stages except adult male (adult male tail tip slightly swollen).

Temperature sensitive. Maintain at 15C. pha-1(e2123) is embryonic lethal at 25C. Hermaphrodites have an abnormal tail: sometimes twisted, tail whip never formed, often bobbed; sometimes uncoordinated with bent tail. Adult male tail deformed also.

Sterile at 25C, maintain at 15C. NOTE (11/16/10 - J. Hubbard): This strain is NOT synonymous with glp-1(e2141) as previously reported in Kodoyianni V, Maine EM, Kimble J. (1992) [Molecular basis of loss-of-function mutations in the glp-1 gene of Caenorhabditis elegans. Mol Biol Cell. 3,1199-213. PMID: 1457827]. As reported in WBG article by Dalfó D, Priess J, Schnabel R and Hubbard J. (2010) [glp-1(e2141) sequence correction. The Worm Breeders Gazette. 18-3.], e2144 carries the mutation c2785t in exon 8, leading to the amino acid change L929F, whereas e2141 carries the mutations c2920t and a3610g in exon 8, leading to the amino acid changes R974C and T1204A.

Class II allele. Partial loss of gut granules (birefringence) in intestinal cells and low penetrance of mislocalized birefringent material into the intestinal lumen. Reference: Rabbitts et al. (2008) Genetics 180:857-871.