Search Strains

otEx7681 [glr-3p::nlp-45 cDNA::SL2::TagRFP::p10 3'UTR + inx-6(prom18)::TagRFP]. Pick RFP+ to maintain. Overexpression of nlp-45 in the RIA neurons in nlp-45 mutant background. Reference: Sun H & Hobert O. Nature. 2021 Dec;600(7887):93-99. doi: 10.1038/s41586-021-04071-4. PMID: 34759317.

otTi71 [UPN::lin-4::unc-54 3’UTR]. single copy insertion of panneuronally expressed lin-4 pri-miRNA. Reference: Sun H & Hobert O. Nature. 2021 Dec;600(7887):93-99. doi: 10.1038/s41586-021-04071-4. PMID: 34759317.

otSi2 [ges-1p::TIR1(F79G)::mRuby::unc-54 3'UTR + Cbr-unc-119(+) *ieSi61] II. Temperature-senstive daf(c): maintain at 15C. Intestine-specific TIR1 sequence in ieSi61 allele was edited to TIR1(F79G) using CRISPR/Cas9 to make it compatible with AID2. [TCC GTC GAG CTC AAG GGA AAG CCA CAC TTC] edited to [AGT GTC GAA TTG AAG GGA AAG CCA CAC GGA]. This strain can be used to deplete DAF-16 specifically from the intestine with the modified auxin 5-Ph-IAA. Constitutive dauer formation at 25 C due to daf-2(e1370). Reference: Sural S, et al. Sci Adv. 2025 Sep 26;11(39):eadw1270. doi: 10.1126/sciadv.adw1270. PMID: 40991693.

The Null Transcriptional Reporter (NuTR) cassette was used to remove the lep-5 locus resulting in a null allele and transcriptional reporter driving expression of GFP. The cassette contains the dominant sqt-1(e1350) allele that results in roller animals. Expression of Cre (via crossing into a strain expressing a germline Cre or by injection of a Cre transgene) will result in removal of the selectable markers and result in non-roller animals. Pick Rollers to retain full transgene cassette. Males exhibit typical leptoderan tails.

The Null Transcriptional Reporter (NuTR) cassette was used to remove the linc-3 locus resulting in a null allele and transcriptional reporter driving expression of GFP. The cassette contains the dominant sqt-1(e1350) allele that results in roller animals. Expression of Cre (via crossing into a strain expressing a germline Cre or by injection of a Cre transgene) will result in removal of the selectable markers and result in non-roller animals. Pick Rollers to retain full transgene cassette. GFP expression is seen in dauers.

The Null Transcriptional Reporter (NuTR) cassette was used to remove the linc-19 locus resulting in a null allele and transcriptional reporter driving expression of GFP. The cassette contains the dominant sqt-1(e1350) allele that results in roller animals. Expression of Cre (via crossing into a strain expressing a germline Cre or by injection of a Cre transgene) will result in removal of the selectable markers and result in non-roller animals. Pick Rollers to retain full transgene cassette. GFP expression is seen in dauers.

The Null Transcriptional Reporter (NuTR) cassette was used to remove the linc-23 locus resulting in a null allele and transcriptional reporter driving expression of GFP. The cassette contains the dominant sqt-1(e1350) allele that results in roller animals. Expression of Cre (via crossing into a strain expressing a germline Cre or by injection of a Cre transgene) will result in removal of the selectable markers and result in non-roller animals. Pick Rollers to retain full transgene cassette. GFP expression is seen in the male somatic gonad.

The Null Transcriptional Reporter (NuTR) cassette was used to remove the linc-23 locus resulting in a null allele and transcriptional reporter driving expression of GFP. The cassette contains the dominant sqt-1(e1350) allele that results in roller animals. Expression of Cre (via crossing into a strain expressing a germline Cre or by injection of a Cre transgene) will result in removal of the selectable markers and result in non-roller animals. Pick Rollers to retain full transgene cassette. GFP expression is seen in the male somatic gonad and extremely dim expression in hermaphrodite spermatheca.

The Null Transcriptional Reporter (NuTR) cassette was used to remove the linc-36 locus resulting in a null allele and transcriptional reporter driving expression of GFP. The cassette contains the dominant sqt-1(e1350) allele that results in roller animals. Expression of Cre (via crossing into a strain expressing a germline Cre or by injection of a Cre transgene) will result in removal of the selectable markers and result in non-roller animals. Pick Rollers to retain full transgene cassette. GFP expression is seen in the sperm of both hermaphrodites and males.

The Null Transcriptional Reporter (NuTR) cassette was used to remove the linc-41 locus resulting in a null allele and transcriptional reporter driving expression of GFP. The cassette contains the dominant sqt-1(e1350) allele that results in roller animals. Expression of Cre (via crossing into a strain expressing a germline Cre or by injection of a Cre transgene) will result in removal of the selectable markers and result in non-roller animals. Pick Rollers to retain full transgene cassette. GFP expression is seen in the male somatic gonad, spermatheca of hermaphrodites, as well as several other tissues in the head.

The Null Transcriptional Reporter (NuTR) cassette was used to remove the tts-1 locus resulting in a null allele and transcriptional reporter driving expression of GFP. The cassette contains the dominant sqt-1(e1350) allele that results in roller animals. Expression of Cre (via crossing into a strain expressing a germline Cre or by injection of a Cre transgene) will result in removal of the selectable markers and result in non-roller animals. Pick Rollers to retain full transgene cassette. GFP expression is seen in several tissues including the pharynx but is significantly upregulated in a stress-dependent manner in a variety of tissues.

The Null Transcriptional Reporter (NuTR) cassette was used to remove the linc-1 locus resulting in a null allele and transcriptional reporter driving expression of GFP. The cassette contains the dominant sqt-1(e1350) allele that results in roller animals. Expression of Cre (via crossing into a strain expressing a germline Cre or by injection of a Cre transgene) will result in removal of the selectable markers and result in non-roller animals. Pick Rollers to retain full transgene cassette. GFP expression is seen in the male somatic gonad.

otIs904 [ges-1p::ins-1::tagRFP-T::SL2::GFP::his-44::tbb-2 3’ UTR + inx-6p18::tagRFP::unc-54 3' UTR] V. Transgene allows monitoring of the secretion of INS-1 neuropeptide from the intestine under different physiological conditions. The multicopy array was inserted at the oxTi553 landing site using the Fluorescent Landmark Interference (FLInt) method. Reference: Sural S, et al. Sci Adv. 2025 Sep 26;11(39):eadw1270. doi: 10.1126/sciadv.adw1270. PMID: 40991693.

otIs908 [pha-4(prom2)::TIR1(F79G)::mTur2::tbb-2 3'UTR + unc-122p::mCherry::unc-54 3' UTR] V. TIR1(F79G) expression in all 22 enteric neurons (20 pharyngeal neurons, AVL and DVB), RIS and PVT. The multicopy array was inserted at the oxTi553 landing site using the Fluorescent Landmark Interference (FLInt) method. Reference: Sural S, et al. Sci Adv. 2025 Sep 26;11(39):eadw1270. doi: 10.1126/sciadv.adw1270. PMID: 40991693.

otIs913 [pha-4(prom2)::daf-2(DN)::eBFP2::tbb-2 3’ UTR + unc-122p::mCherry::unc-54 3' UTR] V. daf-2(DN) encodes a dominant negative form of the DAF-2 protein, causing inhibition of the insulin receptor DAF-2. pha-4(prom2) drives expression of daf-2(DN) in all 22 enteric neurons (20 pharyngeal neurons, AVL and DVB), RIS and PVT. The multicopy array was inserted at the oxTi553 landing site using the Fluorescent Landmark Interference (FLInt) method. Reference: Sural S, et al. Sci Adv. 2025 Sep 26;11(39):eadw1270. doi: 10.1126/sciadv.adw1270. PMID: 40991693.

otSi2 [ges-1p::TIR1(F79G)::mRuby::unc-54 3'UTR + Cbr-unc-119(+) *ieSi61] II. Intestine-specific TIR1 sequence in ieSi61 allele was edited to TIR1(F79G) using CRISPR/Cas9 to make it compatible with AID2. [TCC GTC GAG CTC AAG GGA AAG CCA CAC TTC] edited to [AGT GTC GAA TTG AAG GGA AAG CCA CAC GGA]. This strain can be used to deplete DAF-16 specifically from the intestine with the modified auxin 5-Ph-IAA. Reference: Sural S, et al. Sci Adv. 2025 Sep 26;11(39):eadw1270. doi: 10.1126/sciadv.adw1270. PMID: 40991693.

otIs927 [ges-1p::nlp-40::tagRFP-T::SL2::GFP::his-44::tbb-2 3’ UTR + inx-6(prom18)::tagRFP-T::unc-54 3' UTR] V. Transgene allows monitoring of the secretion of NLP-40 neuropeptide from the intestine under different physiological conditions. The multicopy array was inserted at the oxTi553 landing site using the Fluorescent Landmark Interference (FLInt) method. Reference: Sural S, et al. Sci Adv. 2025 Sep 26;11(39):eadw1270. doi: 10.1126/sciadv.adw1270. PMID: 40991693.

otIs937 [ceh-19(prom2)::daf-2(DN)::eBFP2::SL2::tagRFP-T::tbb-2 3' UTR + unc-122p::GFP::unc-54 3' UTR] V. daf-2(DN) encodes a dominant negative form of the DAF-2 protein, causing inhibition of the insulin receptor DAF-2. daf-2(DN) encodes a dominant negative form of the DAF-2 protein, causing inhibition of the insulin receptor DAF-2. ceh-19(prom2) drives expression of daf-2(DN) specifically in the MC neurons in the pharyngeal nervous system. The multicopy array was inserted at the oxTi553 landing site using the Fluorescent Landmark Interference (FLInt) method. Reference: Sural S, et al. Sci Adv. 2025 Sep 26;11(39):eadw1270. doi: 10.1126/sciadv.adw1270. PMID: 40991693.

otIs942 [tph-1(prom5)::daf-2(DN)::eBFP2::SL2::tagRFP-T::tbb-2 3' UTR + unc-122p::GFP::unc-54 3' UTR] V. daf-2(DN) encodes a dominant negative form of the DAF-2 protein, causing inhibition of the insulin receptor DAF-2. daf-2(DN) encodes a dominant negative form of the DAF-2 protein, causing inhibition of the insulin receptor DAF-2. tph-1(prom5) drives expression of daf-2(DN) specifically in the NSM neurons. The multicopy array was inserted at the oxTi553 landing site using the Fluorescent Landmark Interference (FLInt) method. Reference: Sural S, et al. Sci Adv. 2025 Sep 26;11(39):eadw1270. doi: 10.1126/sciadv.adw1270. PMID: 40991693.

otIs114 [lim-6p::GFP + rol-6(su1006)]. ot123 is a semi-dominant deletion allele of part of the cog-1 3' UTR, a lsy-6 miRNA target. Loss of miRNA regulation leads to ectopic expression of cog-1 in ASEL, which transforms ASEL to have ASER fate. otIs114, normally expressed in only ASEL and excretory gland cells, is lost in ASEL in ot123. Animals tend not to Roll.

otEx2646 [ceh-36::GFP::unc-54 3' UTR + rol-6(su1006)]. Maintain by picking Rollers.

otEx2647 [ceh-36p2::GFP::cog-1 3'UTR + rol-6(su1006)].

otEx2654 [ceh-36p2::GFP::cog1 3' UTR + rol-6(su1006)].

otIs185 [ceh-36::GFP::cog-1 3' UTR + rol-6(su1006)]. Rollers.

otIs232 [che-1p::mCherry(C. elegans-optimized)::che-1 3'UTR + rol-6(su1006)]. otEx4149 [cog-1(fosmid)::YFP + elt-2::DsRed]. Maintain by picking animals dsRed(+) in gut nuclei. Rollers. mCherry expression in ASER and ASEL.

otIs232 [che-1p::mCherry(C. elegans-optimized)::che-1 3'UTR + rol-6(su1006)]. Rollers. mCherry expression in ASER and ASEL. otEx4359 [die-1(prom8)::2NLS::YFP + elt-2::DsRed]. Pick animals with dsRed+ intestinal nuclei to maintain otEx4359. otEx4359 carries a minimal (1 kb) promoter driving 2NLS::YFP only in ASEL.

otEx4390 [8xASE::GFP::cog-1 3'UTR + rol-6(su1006)]. Maintain by picking Rollers.

yokSi3 [spe-11p::trp-3A::TagRFP-T::tbb-2 3'UTR + Cbr-unc-119(+)] II. Reference: Takayama J & Onami S. Cell Rep. 2016 Apr 19;15(3):625-637.

yokSi3 [spe-11p::trp-3A::TagRFP-T::tbb-2 3'UTR + Cbr-unc-119(+)] II. Reference: Takayama J & Onami S. Cell Rep. 2016 Apr 19;15(3):625-637.

yokSi10 [trp-3p::GFP::H2B::trp-3 3'UTR + Cbr-unc-119(+)] II. GFP marker can be used for visualization of sperm. Reference: Takayama J & Onami S. Cell Rep. 2016 Apr 19;15(3):625-637.

ieSi57 [eft-3p::TIR1::mRuby::unc-54 3'UTR + Cbr-unc-119(+)] II. Single copy transgene inserted into chromosome II (oxTi179) expressing modified Arabidopsis thaliana TIR1 tagged with mRuby in the soma. Endogenous osm-6 locus tagged with GFP and AID allows for inducible cilia disruption upon application of auxin. Reference: Varandas KC, et al. Nat Commun. 2025 Jan 2;16(1):79. doi: 10.1038/s41467-024-55674-0. PMID: 39747235.

dvIs62 [snb-1p::hTDP-43/3' long UTR + mtl-2p::GFP] X. Temperature-sensitive. Maintain at 16C to minimize selection against transgene. [NOTE: Out-crossing has eliminated embryonic lethality seen in parental strain CL6049 when raised at 25C.] Uncoordinated from hatching; phenotype is stronger at higher temperatures. Intestinal GFP expression. Parental strain CL6049 out-crossed 6x to N2. Reference: Koopman M, et al. MicroPubl Biol. 2023 Apr 19:2023:10.17912/micropub.biology.000766. doi: 10.17912/micropub.biology.000766. eCollection 2023. PMID: 37151213.

ccTi1594 [mex-5p::GFP::gpr-1::smu-1 3'UTR + Cbr-unc-119(+), III: 680195] III. GFP expression in germline. Transgene rescues unc-119(ed3). Improved GPR-1 over-expression transgene appears to be stably expressed in the germline at a wide range of temperatures and does not require special handling. (unlike other GPR-1 overexpressing transgenes previously described in the literature). The GPR-1 overexpression transgene consistently confers a high penetrance of non-Mendelian inheritance. Neomycin resistant. The genomic location of ccTi1594 is with respect to the WEBcel235 assembly.

ccTi1594 [mex-5p::GFP::gpr-1::smu-1 3'UTR + Cbr-unc-119(+), III: 680195] III. hjSi20 [myo-2p::mCherry::unc-54 3'UTR] IV. GFP expression in germline. mCherry expression in pharynx. The ccTi1594 transgene rescues unc-119(ed3). High penetrance of non-Mendelian inheritance. The GPR-1 overexpression transgene consistently confers a high penetrance of non-Mendelian inheritance; fluorescent markers allow tracking of Mendelian and non-Mendelian events. The genomic location of ccTi1594 is with respect to the WEBcel235 assembly.

ccTi1594 [mex-5p::GFP::gpr-1::smu-1 3'UTR + Cbr-unc-119(+), III: 680195] III. umnIs7 [myo-2p::GFP + NeoR, III:9421936] III. GFP expression in germline and GFP expression in pharynx. High penetrance of non-Mendelian inheritance. Neomycin resistant. The GPR-1 overexpression transgene consistently confers a high penetrance of non-Mendelian inheritance; fluorescent markers allow tracking of Mendelian and non-Mendelian events. The genomic location of ccTi1594 is with respect to the WEBcel235 assembly.

ccTi1594 [mex-5p::GFP::gpr-1::smu-1 3'UTR + Cbr-unc-119(+), III: 680195] III. umnIs27 [myo-2::GFP + NeoR, III: 8856215 (intergenic)] III. GFP expression in germline and GFP expression in pharynx. High penetrance of non-Mendelian inheritance. Neomycin resistant. The GPR-1 overexpression transgene consistently confers a high penetrance of non-Mendelian inheritance; fluorescent markers allow tracking of Mendelian and non-Mendelian events. The genomic location of ccTi1594 is with respect to the WEBcel235 assembly.

oxIs322 [myo-2p::mCherry::H2B + myo-3p::mCherry::H2B + Cbr-unc-119(+)] II. ccTi1594 [mex-5p::GFP::gpr-1::smu-1 3'UTR + Cbr-unc-119(+), III: 680195] III. umnIs7 [myo-2p::GFP + NeoR, III:9421936] III. mCherry expression in pharyngeal and body wall muscle nuclei. GFP expression in germline and GFP expression in pharynx. High penetrance of non-Mendelian inheritance. Neomycin resistant. The GPR-1 overexpression transgene consistently confers a high penetrance of non-Mendelian inheritance; fluorescent markers allow tracking of Mendelian and non-Mendelian events. The genomic location of ccTi1594 is with respect to the WEBcel235 assembly.

oxIs322 [myo-2p::mCherry::H2B + myo-3p::mCherry::H2B + Cbr-unc-119(+)] II. ccTi1594 [mex-5p::GFP::gpr-1::smu-1 3'UTR + Cbr-unc-119(+), III: 680195] III. mCherry expression in pharyngeal and body wall muscle nuclei. GFP expression in germline. High penetrance of non-Mendelian inheritance. The GPR-1 overexpression transgene consistently confers a high penetrance of non-Mendelian inheritance; fluorescent markers allow tracking of Mendelian and non-Mendelian events. The genomic location of ccTi1594 is with respect to the WEBcel235 assembly.

Endogenous unc-54::GFP made by CRISPR. Exhibits green thick muscle filaments in the body wall muscle. Weakly Unc. Reference: Arribere JA, Cenik ES, Jain N, Hess GT, Lee CH, Bassik MC, Fire AZ. Translation readthrough mitigation. Nature. 2016 Jun 30;534(7609):719-23. Epub 2016 Jun 1.

cc2882 is a CRISPR/Cas9-induced G387R mutation of unc-54 in parental strain PD2859, mimicking the molecular lesion e1301. Unc at room temperature. Reference: Arribere JA & Fire AZ. ELife, vol. 7, Aug. 2018, doi:10.7554/elife.33292.

ccEx3163 [unc-39p::unc-39 gene (genomic fragment)::GFP::unc-39 3'UTR + rol-6(su1006)]. Maintain by picking Rollers. ccEx3163 carries unc-39 construct pJLY99.1.

syb11029 is a replacement of the asp-1 locus, removing the entire coding sequence and inserting the myo-2p::mCherry reporter. Upstream flanking sequence: tccttcttccaggta. Downstream flanking sequence: gtaggaatggtgtttt. Guide sequences: Sg1:ccaggtaATGCAGACCTTCGTTT Sg2:TTCGCCACCGCCGTCCACAAGGG.

ReaChR expressed in RIS for optogenetic activation. Reference: Busack I & Bringmann H. PLOS Genetics 19(3): e1010665. https://doi.org/10.1371/journal.pgen.1010665.

flp-11p::unc-58(e665) was knocked into a SKI LODGE site to express a sodium channel in RIS that causes moderate over activation of RIS. Reference: Busack I & Bringmann H. PLOS Genetics 19(3): e1010665. https://doi.org/10.1371/journal.pgen.1010665.

ieSi57 [eft-3p::TIR1::mRuby::unc-54 3'UTR + Cbr-unc-119(+)] II. GFP, AID*, 3xFLAG, and 3xGAS tags inserted into endogenous Y47D3A.21 locus. Reference: Sharma N, et al. bioRxiv [Preprint]. 2024 Jan 19:2024.01.16.575916. doi: 10.1101/2024.01.16.575916. PMID: 38293206.

(III:7007600). FLP D5 recombinase driver expressed from the flp-11 promoter. The flp-11p::FLP driver consistently causes recombination in RIS, as well as in several other cell types. It is more penetrant but less specific than srx-9(syb7929[srx-9::SL2::FLP D5]). Reference: Rossi L, et al. Curr Biol. 2025 Apr 20:S0960-9822(25)00355-0. doi: 10.1016/j.cub.2025.03.039. PMID: 40273913.

FLP D5 recombinase expressed from the srx-9 locus. The srx-9::SL2::FLP driver caused recombination in RIS in most of the individuals, with no recombination detected outside of RIS. It is less penetrant but more specific than syb2346 syb6265[flp-11p::FLP D5::flp-11 3’UTR]. Reference: Rossi L, et al. Curr Biol. 2025 Apr 20:S0960-9822(25)00355-0. doi: 10.1016/j.cub.2025.03.039. PMID: 40273913.

srm-1(syb8127[dpy-10 sgRNAsite::unc-25 fragment with tataa sites::dpy-10 sgRNAsite::SL1-aaaa::FLP D5::let-858 3’utr]) (IV:5015000). FLP D5 recombinase driver expressed from a fragment of the unc-25 promoter that expresses in RME neurons. Recombination was only modestly penetrant. Promoter construct contains dpy-10 sites allowing for a straightforward exchange of the promoter. Reference: Rossi L, et al. Curr Biol. 2025 Apr 20:S0960-9822(25)00355-0. doi: 10.1016/j.cub.2025.03.039. PMID: 40273913.

utsIs3 [rab-11.2p::YFP::unc-54 3'UTR]. Transcriptional reporter for rab-11.2 activation. YFP expression is low at baseline and activated in the intestine by lipid depletion. Reference: Watterson A, et al. Nature. 2022 May;605(7911):736-740. doi: 10.1038/s41586-022-04729-7. PMID: 35585236.

alg-1(ap428 [alg-1::Y45F10D.4 3’UTR]) X. alg-1 control strain. ap428 is a CRISPR-engineered allele in which the endogenous alg-1 3'UTR was replaced by the Y45F10D.4 3'UTR. The Y45F10D.4 3'UTR was chosen because it appears to be stably expressed, is commonly used as a control gene in quantitative RT-PCR experiments, and its short 3’UTR lacks ALG-1 binding sites. Reference: Aalto AP, et al. PLoS Genet. 2018 Jun 21;14(6):e1007379.