Search Strains

Severely Unc. CRISPR-generated deletion removes 111 bp (ACGATAAGAAAACTA...ATGAATCCGCCCAAG). hrt2 allele is specific to the AO13 unc-44 isoform. Reference: He L, et al. eLife 2020;9:e55111 doi: 10.7554/eLife.55111.

CRISPR/Cas9-engineered insertion of GFP tag into the large AO13 splice isoform of the endogenous unc-44 locus at amino acid 6303. Slightly reduced body bends while crawling. Reference: He L, et al. eLife 2020;9:e55111 doi: 10.7554/eLife.55111.

hrtSi28 [des-2p::mKate2::maph-1.1 + unc-119(+)] IV. hrtSi28 inserted into cxTi10882. Expression of mKate2::MAPH-1.1 microtubule marker in PVD and FLP. Reference: He L, et al. eLife 2020;9:e55111 doi: 10.7554/eLife.55111.

mScarlet and FLAG tags inserted into endogenous tes-1 locus by CRISPR/Cas9 genome editing. Reference: Lynch AM, et al. Curr Biol. 2022 Dec 5;32(23):5189-5199.e6. doi: 10.1016/j.cub.2022.10.045. PMID: 36384139.

jcIs1 [ajm-1::GFP + unc-29(+) + rol-6(su1006)] IV. Heterozygotes are Rollers and segregate Rollers, Hmr inviable embyros and Egl Unc. ajm-1 was formerly known as jam-1 (Junction Associated Protein) and "the gene encoding the antigen recognized by the monoclonal antibody MH27." jcIs1 consists of pJS191, C45D3 and pRF4. Reference: Koppen M, et al. Nat Cell Biol. 2001 Nov;3(11):983-91.

jcIs1 [ajm-1::GFP + unc-29(+) + rol-6(su1006)] IV. itr-1(jc5) is cold sensitive. Progeny of homozygotes reared at 15C exhibit 95% maternal effect lethality, while progeny of homozygotes reared at 20C exhibit 15.2% lethality. Arrested embryos are defective in epithelial morphogenesis. ajm-1 was formerly known as jam-1 (Junction Associated Protein) and "the gene encoding the antigen recognized by the monoclonal antibody MH27." jcIs1 consists of pJS191, C45D3 and pRF4.

Heterozygotes are WT and segregate WT, Unc L1 lethals and dead eggs (homozygous zen-4(w35)).

jcIs1 [ajm-1::GFP + unc-29(+) + rol-6(su1006)] IV. ajm-1 was formerly known as jam-1 (Junction Associated Protein) and "the gene encoding the antigen recognized by the monoclonal antibody MH27." jcIs1 consists of pJS191, C45D3 and pRF4. Reference: Koppen M, et al. Nat Cell Biol. 2001 Nov;3(11):983-91.

mNeonGreen and FLAG tags inserted into endogenous tes-1 locus by CRISPR/Cas9 genome editing. Reference: Lynch AM, et al. Curr Biol. 2022 Dec 5;32(23):5189-5199.e6. doi: 10.1016/j.cub.2022.10.045. PMID: 36384139.

rubSi6 [eft-3p::scFv(glo)::GFP(smu-1 introns)::tbb-2 3’UTR] II. rubSi7 [eft-3p::24xGCN4::T2A::tagBFP::H2B::tbb-2 3’UTR]) IV. SunTag system allows visualization of translation throughout development in real-time. This strain expresses a SunTag reporter mRNA (24xGCN4::T2A::tagBFP::H2B::tbb-2 3’UTR ) and a SunTag antibody (scFv::GFP). In the absence of translation, GFP signal can be observed in the cytoplasm, nuclei and at epithelial apical membranes. At translation sites of the SunTag reporter, clustering of the GFP signal can be observed. Mature GCN4 proteins can be observed as dimmer GFP clusters. rubSi6 was inserted into ttTi5605 and also includes a partial duplication of the transgene (a portion of GFP with smu-1 introns and tbb-2 3’UTR) downstream of the tbb-2 3’UTR in the intact transgene. rubSi7 was inserted into cxTi10816. Reference: van der Salm E, et al. Development. 2025 May 15;152(10):dev204435. doi: 10.1242/dev.204435. PMID: 40260543.

wrdSi23 [eft-3p::TIR1::F2A::mTagBFP2::AID*::NLS::tbb-2 3'UTR] (I:-5.32). rubSi6 [eft-3p::scFv(glo)::GFP(smu-1 introns)::tbb-2 3’UTR] II. rubSi8 [eft-3p::24xGCN4::AID::T2A::tagBFP::H2B::tbb-2 3’UTR *rubSi7]) IV. ltIs44 [pie-1p::mCherry::PH(PLC1delta1) + unc-119(+)] V. SunTag system allows visualization of translation throughout development in real-time. In the absence of translation, GFP signal can be observed in the cytoplasm, nuclei and at epithelial apical membranes. At translation sites of the SunTag reporter, bright clustering of the GFP signal can be observed. Mature GCN4 proteins can be observed as dimmer GFP clusters in the absence of auxin, but not in the presence of auxin. Bright BFP signal from mTagBFP2::AID*::NLS and TagBFP::H2B can be visible in nuclei in the absence of auxin, in the presence of auxin only dimmer TagBFP::H2B is visible in nuclei. mCherry::PH marks the cell membranes throughout development. rubSi6 was inserted into ttTi5605 and also includes a partial duplication of the transgene (a portion of GFP with smu-1 introns and tbb-2 3’UTR) downstream of the tbb-2 3’UTR in the intact transgene. rubSi8 derived by modification of insertion of an AID tag into rubSi7, which is located in cxTi10816. Reference: van der Salm E, et al. Development. 2025 May 15;152(10):dev204435. doi: 10.1242/dev.204435. PMID: 40260543.

heSi45 [mcm-4::mCherry + unc-119(+)] IV. This strain contains an S-phase marker that will express mCherry in all cells that undergo cell division, providing a useful alternative to BrdU and EdU staining that is suitable for live imaging. References: Korzelius J, et al. Dev Biol. 2011 Feb 15;350(2):358-69. Korzelius J, et al. PLoS Genet. 2011 Nov;7(11):e1002362.

heIs105 [rps-27::loxP::NLS::mCherry::let858 UTR::loxP::NLS::GFP::let-858 UTR + unc-119(+)] IV. Strain is viable at 15-25 C. heIs105 carries a read-out construct which allows the visualization of the CRE lox mediated recombination by a switch from red to green. Reference: Ruijtenberg S & van den Heuvel S. Cell. 2015 Jul 16;162(2):300-13.

heIs105 [rps-27::loxP::NLS::mCherry::let858 UTR::loxP::NLS::GFP::let-858 UTR + unc-119(+)] IV. heSi141 [hlh-8(short)::FLAG::CRE::tbb-2 + unc-119(+)] X. Maintain at 15-25C. Expression of CRE recombinase in the mesoblast lineage driven by the hlh-8 promoter. heIs105 carries a read-out construct which allows the visualization of the CRE lox mediated recombination in the mesoblast lineage by a switch from red to green. This read-out construct is silenced in the germline. Reference: Ruijtenberg S & van den Heuvel S. Cell. 2015 Jul 16;162(2):300-13.

heSi 143 [rps-27::loxP::mCherry::let-858::fzr-1p::fzr-1::fzr-1 UTR::loxP::GFP::let-858 UTR + unc-119(+)] IV. heSi141 [hlh-8(short)::FLAG::CRE::tbb-2 + unc-119(+)] X. Maintain at 15-25C. Expression of CRE recombinase in the mesoblast lineage driven by the hlh-8 promoter. heSi143 rescues fzr-1(ku298). fzr-1 will be excised upon mesoblast-specific expression of CRE, creating a mesoblast specific mutant of fzr-1. This recombination event can be visualized by a switch from red to green in those cells (the mesoblast) were fzr-1 is lost. Reference: Ruijtenberg S & van den Heuvel S. Cell. 2015 Jul 16;162(2):300-13.

heIs145 [rps-27::loxP::NLS::mCherry::let858 UTR::eft-3::tagBFP::tbb-2 UTR::loxP::NLS::GFP::let-858 UTR + unc-119(+)] IV. Maintain at 15-25C. heIs145 expresses a read-out construct used to visualize CRE activity and specificity, and to test whether CRE expression is likely to induce loss of a gene of interest (tagBFP in this case) in a given tissue. Expression of CRE will result in a change from mCherry to GFP and loss of tagBFP expression in those cells where CRE is active. Reference: Ruijtenberg S & van den Heuvel S. Cell. 2015 Jul 16;162(2):300-13.

heIs105 [rps-27::loxP::NLS::mCherry::let858 UTR::loxP::NLS::GFP::let-858 UTR + unc-119(+)] IV. heSi164 [rps-27::loxN::NLS::mCherry::let858 UTR::swsn-1p::swsn-1::unc-54 UTR::loxN::NLS::GFP::let-858 UTR + unc-119(+)] V. heSi141 [hlh-8(short)::FLAG::CRE::tbb-2 + unc-119(+)] X. Maintain the line at 15C and shift to 25C for mutant analysis. Expression of CRE recombinase in the mesoblast lineage driven by the hlh-8 promoter. heSi164 carries a swsn-1 rescue construct which ensures rescue of the temperature-sensitive swsn-1(os22) mutation. Upon expression of CRE (in this case in the mesoblast lineage) the swsn-1 gene will be excised, creating a mesoblast specific mutant of swsn-1. This recombination event can be visualized by a switch from red to green in those mesoblast cells in which swsn-1 was lost. The animals are healthy at 15C, but embryonic lethal and larval arrested at 23-25C. swsn-1(os22) causes mild overproliferation in the mesoblast lineage. The swsn-1 rescuing transgene is unable to rescue germline development of swsn-1(os22) mutants. Reference: Ruijtenberg S & van den Heuvel S. Cell. 2015 Jul 16;162(2):300-13.

heSi208 [eft- 3p::LoxP::NLS(egl-13)::tagBFP2::tbb-2 UTR::LoxP::NLS(egl-13)::mCherry::tbb-2 3'UTR] V. heSi141 [hlh-8p::CRE] X. Egg laying defective. LoxN sites in the endogenous swsn-4 locus facilitate inducible knockout of swsn-4. he268 he272 homozygotes are Egl since they cannot form a functioning vulva due to swsn-4 inactivated in the mesoderm lineage by hlh-8p::CRE expression. Reference: van der Vaart A, et al. Sci Adv 2020 May 20;6(21):eaay3823. PMID: 32494730

oxTi970 [eft-3p::GFP::2xNLS::tbb-2 3'UTR + Cbr-unc-119(+)] IV. heSi208 [eft- 3p::LoxP::NLS(egl-13)::tagBFP2::tbb-2 UTR::LoxP::NLS(egl-13)::mCherry::tbb-2 3'UTR] V. heSi141 [hlh-8p::CRE] X. Heterozygous. Pick GFP+ to maintain. he277 is a kinase-dead version of swsn-4 linked to oxTi970 maintained over a functional copy of swsn-4 carrying LoxN insertions. he277 homozygotes are larval lethal. he268 he272 homozygotes are non-GFP and Egl since they cannot form a functioning vulva due to swsn-4 inactivated in the mesoderm lineage by hlh-8p::CRE expression. LoxN sites in the endogenous swsn-4 locus facilitate inducible knockout of swsn-4. Reference: van der Vaart A, et al. Sci Adv 2020 May 20;6(21):eaay3823. PMID: 32494730

he314[pie-1p::GLO-ePDZ::mCherry::smu-1::tbb-2 3'UTR] II. e259[eft-3p::PH::eGFP::LOV::tbb-2 3'UTR]) IV. Superficially wild-type. CRISPR/Cas9 was used to create insertion alleles he314 and he259 insertions into N2 background at sites of known MosSCI insertions ttTi5605 and cxTi10816, respectively. ePDZ–LOV system transgenes allow use of blue light to control protein heterodimerization, in this case, membrane recruitment of ePDZ-tagged proteins of interest. Germline-optimized cytosolic ePDZ::mCherry-tagged SMU-1 (GLO-ePDZ::mCherry::SMU-1), and membrane-bound LOV2 domain fused to a pleckstrin-homology domain (PH::eGFP::LOV). GLO-ePDZ::mCherry is a germline-optimized variant coded to be less prone to silencing in the germline. Reference: Fielmich LE, et al. eLife 2018 Aug 15;7:e38198. doi: 10.7554/eLife.38198.

heSi220 [lin-31p::Cre] X. Vulval lineage is marked through activity of a Cre-dependent reporter (blue-to-red switch). All cells in the animal are expressing BFP, except for vulval cells which are expressing mCherry. he317 was inserted into the cxTi10816 site using CRISPR/Cas9. Reference: van der Vaart A, et al. Sci. Adv. 2020 May; 6(21): eaay3823. PMID: 32494730.

heIs9 [myo-3p::cyd-1 + myo-3p::cdk-4::Venus + myo-3p::GFP::H2B] IV. Expression of CYD-1, CDK-4::VENUS, and GFP::H2B in body wall muscles (BWM). Over-expression of tagged CYD-1 and tagged CDK-4 from integrated transgene causes incidental extra BWM nuclei. Expression levels are higher that those from heIs12 in SV860. Reference: Korzelius J, et al. PLoS Genet. 2011 Nov;7(11):e1002362. PMID: 22102824

flvIs2 [tph-1p(short)::Chrimson + elt-2p::mCherry]. Deficits in serotonin-dependent slowing response. NSM neuron is expressing Chrimson and can be specifically activated by red light. Reference: Dag U, et al. bioRxiv 2023.01.15.524132; doi: https://doi.org/10.1101/2023.01.15.524132.

flvIs2 [tph-1p(short)::Chrimson + elt-2p::mCherry]. Deficits in serotonin-dependent slowing response. NSM neuron is expressing Chrimson and can be specifically activated by red light. Reference: Dag U, et al. bioRxiv 2023.01.15.524132; doi: https://doi.org/10.1101/2023.01.15.524132.

flvIs2 [tph-1p(short)::Chrimson + elt-2p::mCherry]. Deficits in serotonin-dependent slowing response. NSM neuron is expressing Chrimson and can be specifically activated by red light. Reference: Dag U, et al. bioRxiv 2023.01.15.524132; doi: https://doi.org/10.1101/2023.01.15.524132.

flvIs2 [tph-1p(short)::Chrimson + elt-2p::mCherry]. Deficits in serotonin-dependent slowing response. NSM neuron is expressing Chrimson and can be specifically activated by red light. Reference: Dag U, et al. bioRxiv 2023.01.15.524132; doi: https://doi.org/10.1101/2023.01.15.524132.

flvIs2 [tph-1p(short)::Chrimson + elt-2p::mCherry]. Deficits in serotonin-dependent slowing response. NSM neuron is expressing Chrimson and can be specifically activated by red light. Reference: Dag U, et al. bioRxiv 2023.01.15.524132; doi: https://doi.org/10.1101/2023.01.15.524132.

flvIs2 [tph-1p(short)::Chrimson + elt-2p::mCherry]. Deficits in serotonin-dependent slowing response. NSM neuron is expressing Chrimson and can be specifically activated by red light. Reference: Dag U, et al. bioRxiv 2023.01.15.524132; doi: https://doi.org/10.1101/2023.01.15.524132.

flvIs2 [tph-1p(short)::Chrimson + elt-2p::mCherry]. Deficits in serotonin-dependent slowing response. NSM neuron is expressing Chrimson and can be specifically activated by red light. Reference: Dag U, et al. bioRxiv 2023.01.15.524132; doi: https://doi.org/10.1101/2023.01.15.524132.

flvIs2 [tph-1p(short)::Chrimson + elt-2p::mCherry]. Deficits in serotonin-dependent slowing response. NSM neuron is expressing Chrimson and can be specifically activated by red light. Reference: Dag U, et al. bioRxiv 2023.01.15.524132; doi: https://doi.org/10.1101/2023.01.15.524132.

Endogenous lgc-50 locus tagged with mNeonGreen. Inclusion of the T2A self-cleaving peptide allows mNeonGreen406 to be expressed as a cytosolic protein. Generated in N2 background. Reference: Dag U, et al. bioRxiv 2023.01.15.524132; doi: https://doi.org/10.1101/2023.01.15.524132.

flvIs17 [tag-168::NLS::GCaMP7F + gcy-28.d::NLS::tagRFPt + ceh-36::NLS::tagRFPt + inx-1::tagRFPt + mod-1::tagRFPt + tph-1(short)::NLS::tagRFPt + gcy-5::NLS-;:tagRFPt + gcy-7::NLS::tagRFPt]. flvIs18 [tag-168::NLS::mNeptune2.5]. This strain can be used for calcium imaging at whole-brain level. Back-crossed 5x to MT21793 after transgene integration. Reference: Dag U, et al. bioRxiv 2023.01.15.524132; doi: https://doi.org/10.1101/2023.01.15.524132.

flvIs2 [tph-1p(short)::Chrimson + elt-2p::mCherry]. Deficits in serotonin-dependent slowing response. NSM neuron is expressing Chrimson and can be specifically activated by red light. Reference: Dag U, et al. bioRxiv 2023.01.15.524132; doi: https://doi.org/10.1101/2023.01.15.524132.

flvIs2 [tph-1p(short)::Chrimson + elt-2p::mCherry]. Deficits in serotonin-dependent slowing response. NSM neuron is expressing Chrimson and can be specifically activated by red light. Reference: Dag U, et al. bioRxiv 2023.01.15.524132; doi: https://doi.org/10.1101/2023.01.15.524132.

flvIs2 [tph-1p(short)::Chrimson + elt-2p::mCherry]. Deficits in serotonin-dependent slowing response. NSM neuron is expressing Chrimson and can be specifically activated by red light. Reference: Dag U, et al. bioRxiv 2023.01.15.524132; doi: https://doi.org/10.1101/2023.01.15.524132.

flvIs17 [tag-168::NLS::GCaMP7F + gcy-28.d::NLS::tagRFPt + ceh-36::NLS::tagRFPt + inx-1::tagRFPt + mod-1::tagRFPt + tph-1(short)::NLS::tagRFPt + gcy-5::NLS-;:tagRFPt + gcy-7::NLS::tagRFPt]. See description of strain OH15263 for full description of otIs670 NeuroPAL (Neuronal Polychromatic Atlas of Landmarks) transgene (Yemini E, et al. Cell. 2021 Jan 7;184(1):272-288.e11. PMID: 33378642). This strain can be used for pan-neuronal calcium imaging. Back-crossed 5x to MT21793 after transgene integration. Reference: Dag U, et al. bioRxiv 2023.01.15.524132; doi: https://doi.org/10.1101/2023.01.15.524132.

flvIs2 [tph-1p(short)::Chrimson + elt-2p::mCherry]. Deficits in serotonin-dependent slowing response. NSM neuron is expressing Chrimson and can be specifically activated by red light. Reference: Dag U, et al. bioRxiv 2023.01.15.524132; doi: https://doi.org/10.1101/2023.01.15.524132.

flvIs2 [tph-1p(short)::Chrimson + elt-2p::mCherry]. Deficits in serotonin-dependent slowing response. NSM neuron is expressing Chrimson and can be specifically activated by red light. Reference: Dag U, et al. bioRxiv 2023.01.15.524132; doi: https://doi.org/10.1101/2023.01.15.524132.

flvIs2 [tph-1p(short)::Chrimson + elt-2p::mCherry]. Deficits in serotonin-dependent slowing response. NSM neuron is expressing Chrimson and can be specifically activated by red light. Reference: Dag U, et al. bioRxiv 2023.01.15.524132; doi: https://doi.org/10.1101/2023.01.15.524132.

Transposon silencing normal.

Twitching due to transposon insertion in unc-22. [(07/16/2018) NOTE: A user has reported their PCR and sequence analysis suggest this strain contains does not still contain Tc3, but retains loss unc-22 function, apparently due to imprecise excision.]

Transposon silencing normal.

Twitching due to transposon insertion in unc-22.

Transposon silencing normal.

mjIs17 contains [myo-2::GFP::lin-41 + myo-2::mCherry::unc-54 (let-7 sensor)].

mjIs11 contains [myo-2::let-7 + unc-119(+)]. mjIs17contains [myo-2::GFP::lin-41 + myo-2::mCherry::unc-54 (let-7 sensor)].

Transposon silencing abnormal. Twitchers.

21U RNA expression abnormal. Temperature sensitive sterility. Transposon silencing abnormal. Sterile at 25.5C; maintain at 20C or below.

mjIs27 [mir-124p::GFP + lin-15(+)]. GFP expression in ~40 neurons, most of which are ciliated sensory neurons (AWC, AWA, AWB, ASH, ASI, ASK, PVQ (not ciliated), ASE, PHA, PHB, PVD (not ciliated), IL1, ADE, PDE). Reference: Clark AM, et al. Nucleic Acids Res. 2010 Jun;38(11):3780-93.

Reduced brood size. Transposon silencing abnormal. Endogenous transposase levels increased.