Search Strains

No obvious phenotype. comt-4(cer157) is a complete deletion of the comt-4 gene (coding sequence + introns), which was replaced by GFP::H2B (Nested CRISPR, Vicencio et al, Genetics 2019), thereby creating a null allele and a transcriptional reporter at the same time. Reference: Martínez-Fernández C, et al. Dis Model Mech. 2022 Mar 1;15(3):dmm049161. doi: 10.1242/dmm.049161. PMID: 35107130

Isolated in 1991 by Carlos E. Winter in soil samples taken at the University of Sao Paulo in Brazil. Hermaphrodite strain. Adults are smaller than C. elegans. The life cycle is a little longer than C. elegans at 22C. Each lays about 300 eggs in the three days following the moult from L4 to adult. Eggs are laid just after being fertilized resulting sometimes in plates with many eggs (much more than C. elegans). See Comp. Biochem. Physiol 103B: 189, 1992. See Nematology 2(1): 89-98, 2000. Can be grown and maintained on NGM. L1s easily frozen and stored in liquid nitrogen. This strain is deposited in Paul Sternberg's collection under the name PS1022. The species has not yet been determined; Lynn Carta will publish a paper proposing Oscheius brevesophaga. DO NOT use this name before the paper is published. Contact Carles E. Winter or Lynn Carta before publishing anything official about this strain. See also WBPaper00004471 and WBPaper00004485. AKA Oscheius sp. 1.

muIs49 [unc-22(+) egl-20::GFP]. Rescuing translational egl-20::GFP fusion. Not known to which LG muIs49 is attached. A few cells in the tail will light up with GFP.

muEx68 [(pJW33) myo-2p::egl-20::GFP + (7PD10.46) unc-22 (antisense)]. Use nicotine or levamisole to pick twitchers. Reference: Whangbo J & Kenyon C, (1999) Mol Cell 4(5):851-8.

muEx79 [(pJW33) myo-2p::egl-20::GFP + (7PD10.46) unc-22 (antisense)]. Use nicotine or levamisole to pick twitchers. Reference: Whangbo J & Kenyon C, (1999) Mol Cell 4(5):851-8.

Rollers. lin-22 and him-5 mutations affect neuroblast formation from epidermal precursor cell V5.

muEx116 [daf-16a::GFP(T54A S240A T242A S314A) + rol-6(su1006)]. Grows at all temperatures. Carries extrachromosomal array. Pick Rollers to maintain.

muIs84 [(pAD76) sod-3p::GFP + rol-6(su1006)]. Green expression in head, tail and around vulva. Many animals roll weakly or not at all, but still express GFP. Grows at all temperatures.

muIs84 [(pAD76) sod-3p::GFP + rol-6(su1006)]. Green expression in head, tail and around vulva. Daf-C at 25C. Grows well at 20C.

mig-2 null mutation. Animals look grossly WT but Q descendants and other migratory neurons misplaced.

muIs120 [ges-1p::GFP::daf-16 + rol-6(su1006)]. Maintain at 15-20C. Rollers. Long-lived. Gamma irradiation-induced integration of muEx211. Rescues daf-16a1/c in the intestine (described in Libina et al, 2003). Reference: Zhang P, et al. Cell Metab, 2013. 17(1): p. 85-100.

muEx304 [lys-7p::RFP(NLS) + rol-6(su1006)]. Pick Rollers to maintain. Reference: Zhang P, et al. Cell Metab. 2013 Jan 8;17(1):85-100.

muEx311 [pep-2p::RFP(NLS) + rol-6(su1006)]. Pick Rollers to maintain. pep-2 is an other name for pept-1. Reference: Zhang P, et al. Cell Metab. 2013 Jan 8;17(1):85-100.

muEx312 [dod-17p::RFP(NLS) + rol-6(su1006)]. Pick Rollers to maintain. Reference: Zhang P, et al. Cell Metab. 2013 Jan 8;17(1):85-100.

Reference: Berman JR, Kenyon C. Cell. 2006 Mar 10;124(5):1055-68.

muEx158 [daf-16cAM::GFP + sur-5p::GFP] (AM = AKT-site mutant). Pick GFP+ worms to maintain. Sterile at 25C; grow at 20C or less. muEx158 contains GFP-tagged daf-16 c isoform (described as a1 isoform in Lin, et al. Nat Genet. 2001) with 4 Ser/Thr residues mutated to Ala, which rescues daf-16 mutants from defective dauer formation and also partially rescues longevity defect of daf-16; glp-1 double mutants. Reference: Berman JR, & Kenyon C. Cell. 2006 Mar 10;124(5):1055-68.

muIs131 [unc-119p::GFP::daf-16 + rol-6(su1006)]. Maintain at 15-20C. Rollers. Modestly long-lived. Gamma irradiation-induced integration of muEx184. Rescues daf-16a1/c in neurons (described in Libina et al, 2003). Reference: Zhang P, et al. Cell Metab, 2013. 17(1): p. 85-100.

muIs126 [myo-3p::GFP::daf-16 + rol-6(su1006)]. Maintain at 15-20C. Rollers. Gamma irradiation-induced integration of muEx215. Rescues daf-16a1/c in muscles (described in Libina et al, 2003). Reference: Zhang P, et al. Cell Metab, 2013. 17(1): p. 85-100.

muIs139 [dod-11p::RFP::NLS + rol-6(su1006)]. Pick Rollers to maintain. Reference: Zhang P, et al. Cell Metab. 2013 Jan 8;17(1):85-100.

muEx336 [mtl-1::RFP + rol-6(su1006)]. Pick Rollers to maintain. Reference: Zhang P, et al. Cell Metab. 2013 Jan 8;17(1):85-100.

muEx344 [kri-1p::GFP::kri-1a cDNA + odr-1::RFP]. Maintain by picking RFP+ animals. Reference: Berman JR and Kenyon C. Cell. 2006 Mar 10;124(5):1055-68.

muEx353 [kri-1(cDNA, a-isoform)::GFP + odr-1p::RFP]. Pick RFP+ to maintain. Temperature sensitive. Sterile at 25C; maintain at 15-20C. Reference: Berman JR and Kenyon C. Cell. 2006 Mar 10;124(5):1055-68.

muIs142 [ges-1p::GFP::daf-16(cDNA) + odr-1p::RFP]. Maintain at 15-20C. Gamma irradiation-induced integration of muEx268. Rescues daf-16a1/c in the intestine (described in Libina et al, 2003). Reference: Zhang P, et al. Cell Metab, 2013. 17(1): p. 85-100.

sIs10314 [rCesC06B3.4::GFP + pCeh361]. Strain was generated by outcrossing to remove dpy-5 from BC12544. Reference: Zhang P, et al. Cell Metab. 2013 Jan 8;17(1):85-100.

Homozygous viable, but short-lived. Reference: Lee SJ, et al. Cell Metab. 2009 Nov;10(5):379-91.

sEx10466 [nnt-1p::GFP + (pCeh361)dpy-5(+)]. Pick GFP+ animals to maintain. Derived by outcrossing BC10466 2x to wild-type to remove dpy-5(e907). Reference: Zhang P, et al. Cell Metab. 2013 Jan 8;17(1):85-100.

sEx11128 [gpd-2p::GFP + (pCeh361)dpy-5(+)]. Pick GFP+ animals to maintain. Derived by outcrossing BC11128 2x to wild-type to remove dpy-5(e907). Reference: Zhang P, et al. Cell Metab. 2013 Jan 8;17(1):85-100.

muEx420 [hsp-12.6p::RFP(NLS) + odr-1p::RFP]. Pick RFP+ animals to maintain. Reference: Zhang P, et al. Cell Metab. 2013 Jan 8;17(1):85-100.

muIs209 [myo-3p::kin-19::tagRFP + tph-1p::GFP]. KIN-19::tagRFP aggregates with age in body-wall muscles. Animals have reduced thrashing compared to controls. Generated in N2 background. References: Huang YC, et al. Elife. 2019 May 3;8. pii: e43059. doi: 10.7554/eLife.43059. David DC, et al. PLoS Biol. 2010 Aug 10;8(8):e1000450.

muIs252 [eft-3p::wrmScarlet1-10::unc-54 3'UTR + Cbr-unc-119(+)] II. split-wrmScarlet11 inserted at the N-terminus of the endogenous tbb-2 locus; detectable in all somatic tissues where wrmScarlet1-10 is present. Figure 3B from Goudeau et al., Genetics 2021. Reference: Goudeau J, et al. Genetics. 2021 Apr; 217(4): iyab014. PMID: 33693628.

fib-1(mu498[wrmScarlet11::fib-1]) generated via CRISPR/Cas9 insertion into parental strain DUP237; transgene contains a linker between wrmScarlet11 and fib-1. Endogenous fib-1 detectable in the germline. T2A::wrmScarlet(1-10) fused to the C-terminus of endogenous GLH-1. The T2A self-cleaving peptide separates wrmScarlet(1-10) from GLH-1 post-translationally so that wrmScarlet(1-10) disperses throughout germ cell nuclei and cytoplasm. wrmScarlet(1-10) is also maternally loaded into embryos, where it persists through early and mid-embryonic development. Reference: Goudeau J, et al. bioRxiv 2020.07.02.185249; doi: https://doi.org/10.1101/2020.07.02.185249. Goudeau J, et al. Genetics. 2021 Apr; 217(4): iyab014. PMID: 33693628.

mab-5 mutation affects ectodermal and mesodermal lineages. lin-22 and him-5 mutations affect neuroblast formation from the epidermal precursor cell V5.

muIs37 [(pMS114) hsp::mig-13 + (pMH86) dpy-20(+)]. Inducible heat-shock promoter driven mig-13 rescues Q cell migration defects in mig-13(mu31) mutants. Reference: Sym, M., Robinson, N., and Kenyon, C. Cell. 1999 Jul 9;98(1):25-36.

muIs37 [(pMS114) hsp::mig-13 + (pMH86) dpy-20(+)]. Inducible heat-shock promoter driven mig-13 rescues Q cell migration defects in mig-13(mu31) mutants. Reference: Sym, M., Robinson, N., and Kenyon, C. Cell. 1999 Jul 9;98(1):25-36.

Male-female strain. Caenorhabditis brenneri reference genome. 107 generations of full-sib mating.

rg551 is an endogenous genomic CRISPR/Cas9 knock in of YFP fused to the C-terminus of the gene pck-2 in N2 background. Robust YFP fluorescence body wall muscle, intestine, hypodermis and pharyngeal muscle. Him. Reference: Goncalves J, et al. iScience 2020 Mar 19;23(4):100990. PMID: 32240955

rg444 is an endogenous genomic CRISPR/Cas9 knock in of YFP fused to the C-terminus of the EGL-2 K+ Channel in N2 background. Faint YFP fluorescent puncta can be detected on muscle membranes and neural cell bodies and processes at high power magnification in all stages. Him. Reference: Goncalves J, et al. iScience 2020 Mar 19;23(4):100990. PMID: 32240955

Hyperactive. Small. Spicule protruder. Coiler. Throws males.

CGC1 (formerly known as PD1074) is intended to be used as a wild-type reference strain with the closely matched genome assembly of Yoshimura, et al. (Genome Res. 2019 Jun;29(6):1009-1022) available on Wormbase as VC2010-1.0. (ENA study accession PRJEB28388; assembly accession GCA_900538205). CGC1 is a defined and recently cloned population of animals derived from the original "Bristol" variant of C. elegans originally obtained by Brenner from E. Dougherty with no known history of mutagenesis. Brenner's original population, called N2, was used as the basis for the vast majority of laboratory strains in use currently. No early frozen stock of the unmutagenized N2 population currently exists, but later stocks were available from several laboratories. CGC1 is a clonal population founded by picking a single worm of one such stock, VC3510. VC3510 in turn derives from a subpopulation of N2 described in the literature as VC2010. We note that CGC1 is expected to be largely similar to most lab N2 strains, but that as a clonal isolate derived from N2, there will be some loci that will vary compared to any other particular N2 isolate. One such example is a partial deletion of the alh-2 locus in CGC1. Additional loci that were found to vary between the prior N2 reference genome (WormBase release WS264) and the VC2010-1.0 assembly are detailed in supplemental table 8 in Yoshimura, et al, (2019). For whole-genome sequence-verified wild strains, please request from the Caenorhabditis Natural Diversity Resource (www.caendr.org).

umnTi7 [eft-3p::GFP + unc-119(+)] IV. Integration site: (IV:+14.35 cM/nt 15,997,713). Might still contain unc-119(ed3) in background.

mir-61 pre-miRNA deletion strain deletion allele in which mir-61 pre-miRNA was replaced by myo-2p::wrmScarlet. Generated in parental strain N2. Rollers. [NOTE: Low levels of Cre activity can lead to excision of the SEC, causing the strain to lose the Roll phentoype. Pick Rollers to retain full transgene cassette.]

mir-250 pre-miRNA deletion strain deletion allele in which mir-250 pre-miRNA was replaced by myo-2p::wrmScarlet. Rollers. Generated in parental strain N2. [NOTE: Low levels of Cre activity can lead to excision of the SEC, causing the strain to lose the Roll phentoype. Pick Rollers to retain full transgene cassette.]

mir-61&mir-250 pre-miRNA deletion strain deletion allele in which mir-61&mir-250 pre-miRNAs were replaced by myo-2p::wrmScarlet. Rollers. Generated in parental strain N2. [NOTE: Low levels of Cre activity can lead to excision of the SEC, causing the strain to lose the Roll phentoype. Pick Rollers to retain full transgene cassette.]

mir-792 pre-miRNA deletion strain deletion allele in which mir-792 pre-miRNA was replaced by myo-2p::wrmScarlet. Rollers. Generated in parental strain N2. [NOTE: Low levels of Cre activity can lead to excision of the SEC, causing the strain to lose the Roll phentoype. Pick Rollers to retain full transgene cassette.]

mir-785 pre-miRNA deletion strain deletion allele in which mir-785 pre-miRNA was replaced by myo-2p::wrmScarlet. Rollers. Generated in parental strain N2. [NOTE: Low levels of Cre activity can lead to excision of the SEC, causing the strain to lose the Roll phentoype. Pick Rollers to retain full transgene cassette.]

mir-392 pre-miRNA deletion strain deletion allele in which mir-392 pre-miRNA was replaced by myo-2p::wrmScarlet. Rollers. Generated in parental strain N2. [NOTE: Low levels of Cre activity can lead to excision of the SEC, causing the strain to lose the Roll phentoype. Pick Rollers to retain full transgene cassette.]

mir-57 pre-miRNA deletion strain deletion allele in which mir-57 pre-miRNA was replaced by myo-2p::wrmScarlet. Rollers. Generated in parental strain N2. [NOTE: Low levels of Cre activity can lead to excision of the SEC, causing the strain to lose the Roll phentoype. Pick Rollers to retain full transgene cassette.]

umnIs15 [myo-2p::GFP + NeoR, III: 9421936 (intergenic)] I. Heterozygotes are WT GFP+ and segregate WT GFP+, dcr-1 homozygotes (protruding vulva, sterile/egl, rupture at vulva), lethal GFP+ hT2 homozygotes (arrest stage unknown) and dead eggs (aneuploids). Will throw an occasional GFP+ Pvul. Pick WT GFP+ and check for correct segregation of progeny to maintain. Derived from parental strains CGC26 and NL687. [NOTE: 3/1995: Apparently the lethal mutation is closely linked but not within the balanced region of hT2. It can occasionally recombine away so that the strain will segregate Bli-4 hT2 homozygotes. (Mark Edgley)]

mir-248 pre-miRNA deletion allele in which mir-248 pre-miRNA was replaced by myo-2p::wrmScarlet. Rollers. Generated in parental strain N2. [NOTE: Low levels of Cre activity can lead to excision of the SEC, causing the strain to lose the Roll phentoype. Pick Rollers to retain full transgene cassette.]

mir-356 pre-miRNA deletion strain deletion allele in which mir-356 pre-miRNA was replaced by myo-2p::wrmScarlet. Rollers. Generated in parental strain N2. [NOTE: Low levels of Cre activity can lead to excision of the SEC, causing the strain to lose the Roll phentoype. Pick Rollers to retain full transgene cassette.]