Search Strains

hrtIs3 [des-2p::myr::GFP + unc-122p::DsRed]. Myristylated GFP marker for PVD. Reference: Harterink M, et al. J Cell Sci. 2018 Oct 22;131(20):jcs223107. PMID: 30254025.

hrtSi4 [gcy-36p::ebp-2::gfp + unc-119(+)] I. hrtSi4 inserted into ttTi4348. EBP-2::GFP expression in PQR, URX and AQR. Reference: Harterink M, et al. J Cell Sci. 2018 Oct 22;131(20):jcs223107. PMID: 30254025.

hrtSi5 [des-2p::ebp-2::GFP + unc-119(+)] I. hrtSi5 inserted into ttTi4348. EBP-2::GFP expression in PVD and FLP. Reference: Harterink M, et al. J Cell Sci. 2018 Oct 22;131(20):jcs223107. PMID: 30254025.

hrtSi9 [ceh-10p::ebp-2::gfp + unc-119(+)] I. hrtSi9 inserted into ttTi4348. EBP-2::GFP expression in CAN. Reference: Harterink M, et al. J Cell Sci. 2018 Oct 22;131(20):jcs223107. PMID: 30254025.

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.

jcEx44 [ajm-1::GFP + rol-6(su1006)]. Throws Rollers (weak -- some animals appear nearly wild-type) expressing ajm-1::GFP and dead eggs.

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.

jcIs17 [hmp-1p::hmp-1::GFP + dlg-1p::dlg-1::DsRed + rol-6(su1006)]. Rollers. References: Zaidel-Bar R, et al. J Cell Biol. 2010 Nov 15;191(4):761-9. Raich WB, et al. Curr Biol. 1999 Oct 21;9(20):1139-46.

jcIs25 [pPE103 (jac-1::GFP) + rol-6(su1006)]. Rollers. Reference: Pettitt et al. 2003. LCB 162:15-22.

Heterozygotes are WT with GFP in pharynx. Segregate Dpy and GFP+. mig-5 homozygotes are non-GFP and show a weakly penetrant gonad defect and a fully penetrant QL.d migration defect.

Heterozygotes are WT with GFP in pharynx. Segregate Dpy and GFP+. mig-5 homozygotes are non-GFP and show a weakly penetrant gonad defect and a fully penetrant QL.d migration defect.

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.

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.

This strain expresses a SunTag antibody (scFv::GFP) throughout development. GFP signal can be observed in the cytoplasm, nuclei and at epithelial apical membranes. rubSi6 [eft-3p::scfv(glo)::gfp(smu-1 introns)::tbb-2 3’UTR] 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. Reference: van der Salm E, et al. Development. 2025 May 15;152(10):dev204435. doi: 10.1242/dev.204435. PMID: 40260543.

heIs63 [wrt-2p::GFP::PH + wrt-2p::GFP::H2B + lin-48p::mCherry] V. GFP expression in seam cells and mCherry expression in pharynx. Reference: Wildwater M, et al. Development. 2011 Oct;138(20):4375-85.

heEx526 [myo-2p::GFP]. Superficially wild-type. Pick GFP+ to maintain. Derived by crossing SV1005 and SV1069. Reference: Maia, A.F. et al. 2015 Sci Data 2:150020.

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.

heSi193 [mcm-4p::CDK sensor::eGFP::tbb- 2 3'UTR + Cbr-unc119(+)] II. This strain carries a GFP S-phase marker expressed in all cells that undergo cell division. Localization of GFP alters between S-phase and interphase. Reference: van Rijnberk LM, et al. PLoS One. 2017 Feb 3;12(2):e0171600.

This strain carries endogenously tagged dynein heavy chain (egfp::dhc-1). Reference: Schmidt et al., J Cell Biol. 2017 Sep 4; 216(9): 2777–2793. doi: 10.1083/jcb.201607038

eGFP and 3xFlag tags inserted into endogenous rnt-1 locus. Superficially wild-type. Reference: Horst SEM, et al. Development 2019 Nov 18;146(22):dev180034.

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.

eGFP tag inserted into endogenous pop-1 locus. The homozygous gfp::pop-1 strain is viable, although not fully healthy and occasionally missing a seam cell. Reference: Horst SEM, et al. Development 2019 Nov 18;146(22):dev180034.

maIs103[rnr::GFP unc-36(+)]. Heterozygotes produce 1/4 thin, sterile, uncoordinated animals that fail to undergo postembryonic somatic cell divisions. rnr::GFP is expressed during S-phase in heterozygous animals. rnr::GFP expression is not detected in heDf1 animals. Although the map position of maIs103 has not been determined conclusively, maIs103 genetically behaves linked to cdk-4. Maintain by picking several single animals and scoring for 1/4 mutant progeny.

maIs103[rnr::GFP unc-36(+)] X. Heterozygotes produce 1/4 thin, sterile, uncoordinated animals that fail to undergo postembryonic somatic cell divisions. rnr::GFP is expressed during S-phase in heterozygous animals. rnr::GFP expression is not detected in heDf1 animals. Although the map position of maIs103 has not been determined conclusively, maIs103 genetically behaves linked to cdk-4. Maintain by picking several single animals and scoring for 1/4 mutant progeny.

maIs103[rnr::GFP unc-36(+)] X. The heDf1 deletion includes cdk-4. Heterozygotes produce 1/4 thin, sterile, uncoordinated animals that fail to undergo postembryonic somatic cell divisions. heDf1 mutants are of L1 size, smaller than cdk-4 mutants. lon-2 and unc-9 do not exactly balance heDf1, but unc-9 is pretty close. It should also be possible to follow the heterozygotes by looking at the GFP. Despite trying, unable to separate the maIs integration from heDf1 or the other cdk-4 alleles. By maintaining animals with GFP (visible especially in early animals and in eggs) you should be able to maintain heDf1. rnr::GFP is expressed during S-phase in heterozygous animals. rnr::GFP expression is not detected in heDf1 animals. maIs103 is tightly linked to heDf1. Maintain by picking several single animals and scoring for 1/4 mutant progeny.

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

heIs12 [myo-3p::cyd-1 + myo-3p::cdk-4::Venus + myo-3p::GFP::H2B]. 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 lower that those from heIs9 in SV857. Reference: Korzelius J, et al. PLoS Genet. 2011 Nov;7(11):e1002362. PMID: 22102824

flvEx4 [rig-3p::wArchon1::GFP + sra-6::ChR2-GFP + elt-2p::nGFP]. Pick GFP+ to maintain. Voltage-sensor protein wArchon1 transgene injected into N2 background. Reference: Piatkevich KD, et al. Nature Chemical Biology. 2018. doi:10.1038/s41589-018-0004-9.

flvEx5 [rig-3p::wArchon1::GFP + elt-2p::nGFP]. Pick GFP+ to maintain. Expresses voltage sensor wArchon1 in AVA, tagged with GFP, as well as GFP in the gut from the co-injection marker.

mjIs145 [mex-5p::GFP::his-58::21UR-1sense::tbb-2 3'UTR] II. Control piRNA sensor strain accompanying SX1316. Instead of antisense 21UR-1 target site, this transgene contains the piRNA sequence in sense and histone GFP is not silenced. Reference: Bagijn MP, et al. Science. 2012 Aug 3;337(6094):574-8.

mjIs144 [mex-5p::GFP::his-58::21UR-1target::tbb-2 3'UTR + unc-119(+)] II. piRNA sensor strain. Single copy inserted into ttTi5605 (MosSCI). Superficially wild-type with loss of piRNA sensor silencing in piRNA pathway mutants (e.g. prg-1). GFP is silenced in wild-type, expressed in piRNA pathway mutants and can be used as a simple read-out for piRNA pathway function. Reference: Bagijn MP, et al. Science. 2012 Aug 3;337(6094):574-8.

mjEx331 [eft-3p::pash-1::GFP::unc-54 3'UTR + myo-2p::mCherry::unc-54 3'UTR]. Maintain at 25C. Array rescues pash-1 lethality and should be self-selecting at 25C. Pick mCherry(+) animals to confirm presence of array. SX1359 was derived from SX1137 pash-1(mj100). mj100 homozygotes can be re-isolated by raising SX1359 at permissive temperature (15C) and picking animals that have lost the array. Reference: Lehrbach NJ, et al. RNA. 2012 Dec;18(12):2220-35.

mjIs588 [mex-5p::GFP::his-58::21UR-1target::tbb-2 3'UTR + unc-119(+)] II. mjIs588 was derived by removing introns 2 and 3 from the construct used to generate the mjIs144 transgene. Single copy inserted into ttTi5605 (MosSCI). Superficially wild-type. mjIs588 GFP is silenced in wild-type animals and de-silenced in hrde-1 mutant animals. Reference: Akay A, et al. Dev Cell. 2017 Aug 7;42(3):241-255.e6.

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)].

ccEx7271 [let-858::GFP + pha-1(+)]. This strain expresses nuclear-localized GFP in all somatic nuclei, but reduced or no GFP in germ cells. If maintained at 20C, pha-1(ts) genotype will select for transgenic animals. Germ cell expression can be observed when maintained at 25C. Germline transgene silencing is abnormal.

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.

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.

ltIs37 [pie-1p::mCherry::his-58 + unc-119(+)] IV. stIs10116 [his-72p::his-24::mCherry::let-858 3’UTR + unc-119(+)]. GFP knockin at N-terminus of pqm-1 locus. Cellular protein expression pattern during embryogenesis (until bean stage) is available at http://dulab.genetics.ac.cn/TF-atlas. [NOTE: the ltIs37 [pie-1p::mCherry::his-58 + unc-119(+)] IV transgene was previously annotated as itIs37 in this strain. The correct name of the transgene is ltIs37 and not itIs37.] Reference: Ma X, Zhao Z, Xiao L, et al. Nat Methods. 2021;18(8):893-902. doi:10.1038/s41592-021-01216-1.

GFP knockin at C-terminal of daf-12 locus. Cellular protein expression pattern during embryogenesis (until bean stage) is available at http://dulab.genetics.ac.cn/TF-atlas. Reference: Ma X, Zhao Z, Xiao L, et al. Nat Methods. 2021;18(8):893-902. doi:10.1038/s41592-021-01216-1.

GFP knockin at N-terminus of Y75B8A.6 locus. Cellular protein expression pattern during embryogenesis (until bean stage) is available at http://dulab.genetics.ac.cn/TF-atlas. Reference: Ma X, Zhao Z, Xiao L, et al. Nat Methods. 2021;18(8):893-902. doi:10.1038/s41592-021-01216-1.

GFP knockin at C-terminus of skn-1 locus. Cellular protein expression pattern during embryogenesis (until bean stage) is available at http://dulab.genetics.ac.cn/TF-atlas. Reference: Ma X, Zhao Z, Xiao L, et al. Nat Methods. 2021;18(8):893-902. doi:10.1038/s41592-021-01216-1.

alg-5(ram2[GFP::3xFLAG + LoxP]) is a deletion allele of alg-5. The coding region of the alg-5 genomic locus was replaced with GFP::3xFLAG using CRISPR-Cas9. Transgenic animals express GFP::3xFLAG under the control of alg-5 regulatory elements. GFP expression in the germline can be seen under a microscope. Reference: Nucleic Acids Res. 2017;45(15):9093-9107. doi:10.1093/nar/gkx536 PMID: 28645154

chEx1682 [pLH070(qua-1(full-length)::GFP + rol-6(su1006)]. Rollers. Maintain under normal conditions; pick rollers. Reference: Hao et al. (2006) Dev Dyn 235:1469-81.

gtEx2[CEP-1::GFP + unc-119(+)]. GFP expression in germ line of adult worms (20-40 hours post L4) in the late pacytene area in the nucleus. Also expression in alae and a few nuclei in the pharynx. Compound microscope needed to see staining. Maintain by picking non-Unc.