Search Strains

ojIs40 [pie-1::mGFP::wsp-1(G-protein binding domain) + unc-119(+)]. Reference: Kumfer et al. (2010) Mol Biol Cell (2):266-77.

C. briggsae strain. Reduced fecundity at 20°C and 25°C. Generated by CRISPR/Cas9 in AF16 background, prg-1(how21) is a 5 bp deletion located 47 bp downstream of the start codon that causes frameshift. prg-1(how21) is presumed null; consistent with previous findings that the stability of piRNAs and Piwi protein are co-dependent in C. elegans, the overall abundance of 21 U-RNAs in Cbr-prg-1(how21) was reduced to ~1% of wild-type. Reference: Pastore B, et al. RNA Biol. 2022 Jan;19(1):1276-1292. doi: 10.1080/15476286.2022.2149170.

Temperature sensitive: maintain at 15-20C. Reduced number of progeny at elevated temperatures. wago-4(jog272) is an engineered Y611E point mutation predicted to disrupt small RNA binding and exhibits a diffuse cytoplasmic localization. This allele was introduced into 3xFlag::GFP tagged endogenous wago-4 locus in parental strain YY1325.

Nuclear body wall muscle GFP+.

srf780 is a deletion of the Smr nuclease domain of nonu-1. Unc. GFP expression in body wall muscle. Reference: Glover ML, et al. Cell Rep. 2020 Mar 31;30(13):4321-4331.e4. doi: 10.1016/j.celrep.2020.03.023. PMID: 32234470.

Heterozygotes are WT and segregate WT, DpyUncs, and Unc-4 animals which arrest at the L4 stage. Rarely, a recombination will occur and unc-4 and pir-1 will become unlinked. Propagate the strain by picking single WT animals and checking for correct segregation of progeny. 6/2007: Daniel Chavez notes that tm1496 may also delete part of sec-5, which could be responsible for the developmental arrest of tm1496.

Temperature sensitive sterile. Will throw dead eggs at 25C. 292 bp deletion.

neEx15 [myo-2::RFP + myo-2::avr-15(+) + unc-119(+)]. MosSCI recipient strain. neEx15 rescues unc-119, making the worms healthier for injection. The array is counter-selectable. Reference: Shirayama M, et al. Cell. 2012 Jul 6;150(1):65-77.

Maintain at 15 C. MAGO12 mutant. RNAi resistant. Temperature sensitive. Reference: Gu, et al. 2009 Mol Cell 36:234-44.

neIs21 [wago-1::3xFLAG + unc-119(+)]. Reference: Gu, et al. 2009 Mol Cell 36:234-44.

neIs20 [pie-1::3xFLAG::csr-1 + unc-119(+)]. Partially rescues sterility (60% dead embryos). Unknown if unc-119(ed3) is still present in the background. Reference: Claycomb J, et al. 2009 Cell 139:123-34.

neIs20 [pie-1::GFP::csr-1 + unc-119(+)]. Partially rescues sterility (60% dead embryos). Unknown if unc-119(ed3) is still present in the background. Reference: Claycomb J, et al. 2009 Cell 139:123-34.

neIs22 [wago-1::GFP + unc-119(+)]. Maintain at 24 C to avoid silencing of GFP expression. Reference: Gu, et al. 2009 Mol Cell 36:234-44.

Mutator. Dominant RNA-i deficient. Temperature sensitive sterile. Maintain at 15-20 C. ne4253 is a C-to-T transition at position 3896 of the genomic DNA with respect to the +1 position of the ATG creating a T834M missense mutation. Reference: Gu, et al. 2009 Mol Cell 36:234-44.

Dominant RNAi deficient. Temperature-sensitive sterile. E439K mutation in conserved Mg2+ coordinating residue. Reference: Gu W, et al. Mol Cell. 2009 Oct 23;36(2):231-44.

axIs36 [pes-10::GFP]. Heterozygotes are Unc and sensitive to ivermectin. Segregates csr-1 homozygotes (sterile, non-Unc, resisitant to ivermectin), dead embryos, and Unc heterozygotes. Maintain by picking Uncs. Do not distribute this strain; other labs should request it directly from the CGC. Reference: Claycomb JM, et al. Cell. 2009 Oct 2;139(1):123-34.

Heterozygotes are wild-type, GFP+ and sensitive to ivermectin. Segregates non-GFP ego-1 homozygotes (sterile, resisitant to ivermectin), arrested hT2 aneuploids, and wild-type GFP+ heterozygotes. Maintain by picking GFP+. Do not distribute this strain; other labs should request it directly from the CGC. Reference: Claycomb JM, et al. Cell. 2009 Oct 2;139(1):123-34.

Heterozygotes are wild-type, GFP+ and sensitive to ivermectin. Segregates non-GFP drh-3 homozygotes (sterile, resisitant to ivermectin), arrested hT2 aneuploids, and wild-type GFP+ heterozygotes. Maintain by picking GFP+. Do not distribute this strain; other labs should request it directly from the CGC. Reference: Claycomb JM, et al. Cell. 2009 Oct 2;139(1):123-34.

Mutator. Dominant RNAi-deficient. Temperature-sensitive sterile. Maintain at 15-20C. ne3197 is a G840D missense mutation. Reference: Gu W, et al. Mol Cell. 2009 Oct 23;36(2):231-44.

Mutator. Dominant RNAi-deficient. Temperature-sensitive sterile. Maintain at 15-20C. ne4254 is a G802E missense mutation. Reference: Gu W, et al. Mol Cell. 2009 Oct 23;36(2):231-44.

neSi12 [cdk-1::GFP + Cbr-unc-119(+)] II. Reference: Shirayama M, et al. Cell. 2012 Jul 6;150(1):65-77.

neSi14 [FLAG::prg-1 + Cbr-unc-119(+)] II. MosSCI insertion into ttTi5605 (LG II). Reference: Lee HC, et al. Cell. 2012 Jul 6;150(1):78-87.

neSi15 [FLAG::prg-1(D583A) + Cbr-unc-119(+)] II. MosSCI insertion into ttTi5605 (LG II). Reference: Lee HC, et al. Cell. 2012 Jul 6;150(1):78-87.

Heterozygotes are Unc and segregate Unc, WT which give only dead eggs, and dead eggs. Zygotic phenotype: 100% of gex-3 homozygotes become Egl although they all make a normal looking L3/L4 vulva. Embryonic phenotype: complete loss of morphogenesis - hypodermal cells fail to intercalate or migrate. Received new stock from Erik Lundquist 11/2003.

RNAi deficient. Reference: Tabara H, et al. Cell 1999 Oct 15:99(2):123-32.

Defective in mitotic spindle orientation. Mis-segregation of germline proteins PGL-1 and PIE-1. Change of cell fate (extra-gut, no gut). Defective in chromosome segregation. Temperature sensitive; maintain at 15C; 100% lethal at 25C.

Rollers. n1270 is phenotypically wild type. neEx1[LIT-1::GFP + rol-6(su1006)]. LIT-1::GFP has full length LIT-1 fused to GFP in a YAC. Pick Rollers to maintain.

sprSi2 [pie-1p::GFP::histone-H2B::nos-2 3'UTR + Cbr-unc-119(+)] II. Fluorescence in all cells of early embryo. This fluorescence reporter has mutations in both MEX-3 binding sites and shows ectopic expression relative to strain WRM1. Reference: Pagano JM, et al. Proc Natl Acad Sci U S A. 2009 Dec 1;106(48):20252-7.

Pick GFP+ to maintain. sprDf1 is a ~0.25 Mb microdeletion allele on the left arm of chromosome V that removes 32 adjacent protein-coding genes, including mex-5. Heterozygous animals (GFP+) are fertile, but sometimes die by bursting, will have polynucleated embryos, and form uterine tumors ~6 days after hatching. sprDf1 homozygotes (GFP-) have maternal effect lethality, are small, sterile, form large uterine tumors that consist of poly nucleated embryos, have squashed vulvas, are uncoordinated, and die by bursting within eight days of hatching. nT1 homozygotes are inviable (dead eggs). Reference: Antkowiak KR, et al. G3 (Bethesda). 2023 Nov 13:jkad258. doi: 10.1093/g3journal/jkad258. PMID: 37956108.

sprSi5 [mex-5p::MODC PEST::GFP::H2B::glp-1 3'UTR + Cbr-unc-119(+)] II. Reference: Farley BM, Ryder SP. Mol Biol Cell. 2012 Oct 3.

sprSi6 [mex-5p::MODC PEST::GFP::H2B::glp-1 (GBM UtoC) 3'UTR + Cbr-unc-119(+)] II. Reference: Farley BM, Ryder SP. Mol Biol Cell. 2012 Oct 3.

sprSi7 [mex-5p::MODC PEST::GFP::H2B::glp-1 (5' PRE) 3'UTR + Cbr-unc-119(+)] II. Reference: Farley BM, Ryder SP. Mol Biol Cell. 2012 Oct 3.

sprSi8 [mex-5p::MODC PEST::GFP::H2B::glp-1 (3' PRE) 3'UTR + Cbr-unc-119(+)] II. Reference: Farley BM, Ryder SP. Mol Biol Cell. 2012 Oct 3.

sprS9 [mex-5p::MODC PEST::GFP::H2B::glp-1 (5' 3' PRE) 3'UTR + Cbr-unc-119(+)] II. Reference: Farley BM, Ryder SP. Mol Biol Cell. 2012 Oct 3.

opIs34 [hus-1p::hus-1::GFP + unc-119(+)]. Low-copy integrated array of 1144 bp hus-1 promoter and genomic coding sequence fused to GFP. Nuclear expression of GFP in germ cells and embryos. Integrated GFP construct completely rescues DNA damage induced cell cycle arrest defect and partially rescues DNA damage induced apoptosis of hus-1(op241).

Maintain at 15-20C. Sterile at 25C. Apoptosis variant. Small germ line.

opIs56 [egl-1p::2xNLS::GFP]. opIs56 is a low copy integrant of 3 kb 5' sequence from egl-1 fused to 2xNLS GFP. unc-119(ed3) should be outcrossed. Low basal GFP expression in embryos, meiotic germ cells and several neurons. GFP expression can be induced by ionizing radiation in all germ cells. Best viewed with dissected gonads.

opIs76 [cyb-1p::cyb-1::YFP + unc-119(+)]. The fusion protein partially rescues a cyb-1 null allele, so it is at least partially functional. non-Unc strain.

Maintain at 15 or 20C. Mrt at 25C. Defective for DNA damage induced germ cell death and cell cycle arrest.

Sterile or nearly sterile. Extra programmed cell death in germline. Maintain at 20 C. Reference: Kritikou et al. 2006 Genes Dev 20(16):2279-92.

Sterile or nearly sterile. Extra programmed cell death in germline. Maintain at 20 C. Reference: Kritikou et al. 2006 Genes Dev 20(16):2279-92.

Sterile or nearly sterile. Extra programmed cell death in germline. Maintain at 20 C. Reference: Kritikou et al. 2006 Genes Dev 20(16):2279-92.

opIs206 [hif-1p::hif-1(genomic)::GFP::hif-1 3'UTR + unc-119(+)]. Weak GFP signal in early embryonic stages (2-cell, 4-cell, 8-cell, etc.). Reference: Sendoel A, et al. Nature. 2010 Jun 3;465(7298):577-83.

opIs406 [fan-1p::fan-1::GFP::let-858 3'UTR + unc-119(+)]. opIs406 resuces tm423. Reference: Kratz K, et al. Cell. 2010 Jul 9;142(1):77-88.

Heterozygotes are WT with pharyngeal GFP signal, and segregate WT GFP, arrested nT1[qIs51] aneuploids, and non-GFP ccz-1 homozygotes (produce only arrested embryos with spindle orientation defects, accumulate vesicles, and problems engulfing apoptotic corpses). Homozygous nT1[qIs51] inviable. Pick WT GFP and check for correct segregation of progeny to maintain. Reference: Nieto C, et al. J Cell Sci. 2010 Jun 15;123(Pt 12):2001-7.

Heterozygotes are WT and segregate WT, Uncs which are sterile (>10 offspring) and Dpys. Throws males of all classes. mIn1 pka mC6.

Non-Glp; remains fertile even with sygl-1(RNAi). Endogenous lst-1 locus tagged with a 3xFLAG N-terminally. Visible in cytoplasm of 5-6 cell diameters of distal germline in young adults. Reference: Kocsisova Z, et al. Development. 2019 Apr 23;146(8).

Non-Glp; remains fertile even with lst-1(RNAi). Endogenous sygl-1 locus tagged with a 3xFLAG N-terminally. Visible in cytoplasm of 10-12 cell diameters of distal germline in young adults. Reference: Kocsisova Z, et al. Development. 2019 Apr 23;146(8).

Homozygous maternal effect lethal mutation balanced by GFP-marked translocation. Heterozygotes are WT with pharyngeal GFP signal, and segregate WT GFP, arrested nT1[qIs51] aneuploids, and non-GFP am315 homozygotes (maternal effect lethal). Homozygous nT1[qIs51] inviable. Pick wild-type GFP and check for correct segregation of progeny to maintain. 3xFLAG epitope allows antibody detection of full-length PCN-1. Reference: Kocsisova Z, et al. BMC Dev Biol. 2018 May 30;18(1):12.

Severe loss of function/null. Weak vulvaless phenotype (subtle defect in vulval cell lineages). Nonsense change of codon 186 of the predicted ORF C15B12.7. See also WBPaper00005255.