Search Strains

otIs221 [cat-1::GFP]. norEx41 [ceh-43(fosmid) + dat-1::mCherry]. Him. tm480 embryonic lethality is rescued by extrachromosomal array. Pick mCherry+ animals to maintain.

otIs225 [cat-4::GFP]. norEx41 [ceh-43 (fosmid) + dat-1::mCherry]. Him. tm480 embryonic lethality is rescued by extrachromosomal array. Pick mCherry+ animals to maintain.

nIs118 [cat-2::GFP]. norEx41 [ceh-43 fosmid + dat-1::mCherry]. Him. tm480 embryonic lethality is rescued by extrachromosomal array. Pick mCherry+ animals to maintain.

otIs259 [dat-1::GFP + rol-6(su1006)]. norEx41 [ceh-43 fosmid + dat-1::mCherry]. Rollers. tm480 embryonic lethality is rescued by extrachromosomal array. Pick mCherry+ animals to maintain.

otIs226 [bas-1::GFP]. norEx41 [ceh-43 fosmid + dat-1::mCherry]]. Him. tm480 embryonic lethality is rescued by extrachromosomal array. Pick mCherry+ animals to maintain.

bxIs19 [trp-4p::GFP]. norEx41 [ceh-43 fosmid + dat-1::mCherry]. Him. tm480 embryonic lethality is rescued by extrachromosomal array. Pick mCherry+ animals to maintain.

otIs287 [rab-3::NLS::YFP + rol-6(su1006)]. norEx41 [ceh-43 fosmid + dat-1::mCherry]. Rollers. tm480 embryonic lethality is rescued by extrachromosomal array. Pick mCherry+ animals to maintain.

otEx5094 [swsn-2.2p::swsn-2.2::mChopti + ttx-3::GFP]. Pick GFP+ to maintain. ok3161 homozygotes arrest in early larval development. otEx5094 rescues lethality, but animals are still somewhat sick at 25C.

otIs494 [flp-6(fosmid)::sl2::1xNLS::mChOpti]. Cytoplasmic mChOpti expression in ASE, AFD, ASG, I1, PVT and VC neurons. Leyva-Díaz E, Hobert O. Transcription factor autoregulation required for acquisition and maintenance of neuronal identity. (Under revision)

otIs672 [rab-3::NLS::GCaMP6s + arrd-4:NLS:::GCaMP6s]. See description of strain OH15262 for full description of otIs669 NeuroPAL (Neuronal Polychromatic Atlas of Landmarks) transgene (Yemini E, et al. Cell. 2021 Jan 7;184(1):272-288.e11. PMID: 33378642). Bottlenecked 23x for isogenicity. Slow growing. Reference: Yemini E, et al. Cell. 2021 Jan 7;184(1):272-288.e11. PMID: 33378642 Free pre-print available at https://www.biorxiv.org/content/10.1101/676312v2

ot856 [che-1::SEC-GFP::TEV::3xFLAG]. Endogenous locus of che-1 carrying mutation in regulatory region (ASE motif) and tagged with GFP. che-1 expression, molecular marker expression and neuronal function (chemotaxis assays) severely affected. Reference: Leyva-Díaz E, Hobert O. Transcription factor autoregulation required for acquisition and maintenance of neuronal identity. (Under revision).

ot856 [che-1::SEC-GFP::TEV::3xFLAG]. Endogenous locus of che-1 carrying mutation in regulatory region (ASE motif) and tagged with GFP. che-1 expression, molecular marker expression and neuronal function (chemotaxis assays) severely affected. Reference: Leyva-Díaz E, Hobert O. Transcription factor autoregulation required for acquisition and maintenance of neuronal identity. (Under revision).

otIs114 [lim-6p::GFP + rol-6(su1006)]. Ectopic lim-6 expression in a set of cells anterior to ASE. Molecular identity: W40Stop. Null allele.

otIs672 [rab-3::NLS::GCaMP6s + arrd-4::NLS::GCaMP6s]. otIs670 provides a healthier alternative to otIs669, performing better in a variety of phenotypic assays. See description of strain OH15263 for full description of otIs670 NeuroPAL (Neuronal Polychromatic Atlas of Landmarks) transgene. Reference: Yemini E, et al. Cell. 2021 Jan 7;184(1):272-288.e11. PMID: 33378642 Free pre-print available at https://www.biorxiv.org/content/10.1101/676312v2

wtfIs5 [rab-3p::NLS::GCaMP6s + rab-3p::NLS::tagRFP]. Integrated calcium indicator GCaMP6s and calcium-insensitive fluorescent protein RFP in the nuclei of all neurons. otIs670 provides a healthier alternative to otIs669, performing better in a variety of phenotypic assays. 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). Reference: Yemini E, et al. Cell. 2021 Jan 7;184(1):272-288.e11. PMID: 33378642 Free pre-print available at https://www.biorxiv.org/content/10.1101/676312v2

Him. [NOTE: strain does not segregate many male progeny.] otIs670 provides a healthier alternative to otIs669, performing better in a variety of phenotypic assays. otIs670 [UPN::NLS::TagRFP-T + acr-5::NLS::mTagBFP2::H2B + flp-1::NLS::mTagBFP2::H2B + flp-6::NLS::mTagBFP2::H2B + flp-18::NLS::mTagBFP2::H2B + flp-19::NLS::mTagBFP2::H2B + flp-26::NLS::mTagBFP2::H2B + gcy-18::NLS::mTagBFP2::H2B + ggr-3::NLS::mTagBFP2::H2B + lim-4::NLS::mTagBFP2::H2B + pdfr-1::NLS::mTagBFP2::H2B + srab-20::NLS::mTagBFP2::H2B + unc-25::NLS::mTagBFP2::H2B + cho-1::NLS::CyOFP1::H2B + flp-13::NLS::CyOFP1::H2B + flp-20::NLS::CyOFP1::H2B + gcy-36::NLS::CyOFP1::H2B + gpa-1::NLS::CyOFP1::H2B + nlp-12::NLS::CyOFP1::H2B + nmr-1::NLS::CyOFP1::H2B + ocr-1::NLS::CyOFP1::H2B + osm-9::NLS::CyOFP1::H2B + srh-79::NLS::CyOFP1::H2B + sri-1::NLS::CyOFP1::H2B + srsx-3::NLS::CyOFP1::H2B + unc-8::NLS::CyOFP1::H2B + acr-2::NLS::mNeptune2.5 + ceh-2::NLS::mNeptune2.5 + dat-1::NLS::mNeptune2.5 + dhc-3::NLS::mNeptune2.5 + eat-4::NLS::mNeptune2.5 + flp-3::NLS::mNeptune2.5 + gcy-35::NLS::mNeptune2.5 + glr-1::NLS::mNeptune2.5 + gcy-21::NLS::CyOFP1::H2B::T2A::NLS::mTagBFP2::H2B + klp-6::NLS::mNeptune2.5::T2A::NLS::CyOFP1::H2B + lim-6::NLS::mNeptune2.5::T2A::NLS::CyOFP1::H2B + mbr-1::NLS::mNeptune2.5::T2A::NLS::mTagBFP2::H2B + mec-3::NLS::CyOFP1::H2B::T2A::NLS::mTagBFP2::H2B + odr-1::NLS::mNeptune2.5::T2A::NLS::mTagBFP2::H2B + srab-20::NLS::mNeptune2.5::T2A::NLS::mTagBFP2::H2B] V. UPN (Ultra Pan-Neuronal) promoter contains four short pan-neuronal promoters fused together (unc-11::rgef-1::ehs-1::ric-19). NeuroPAL (Neuronal Polychromatic Atlas of Landmarks) transgene used to resolve unique neural identities in whole-brain images. Reference: Yemini E, et al. Cell. 2021 Jan 7;184(1):272-288.e11. PMID: 33378642 Free pre-print available at https://www.biorxiv.org/content/10.1101/676312v2

otIs810 [sto-3p::tagRFP + sto-3p::GFP::cla-1]. Reference: Reilly MB, et al. Widespread employment of conserved C. elegans homeobox genes in neuronal identity specification. bioRxiv 2022.04.29.490095; doi: https://doi.org/10.1101/2022.04.29.490095

CRISPR/Cas9 engineered tagged endogenous locus. Him. See description of strain OH15262 for full description of otIs669 NeuroPAL (Neuronal Polychromatic Atlas of Landmarks) transgene (Yemini E, et al. Cell. 2021 Jan 7;184(1):272-288.e11. PMID: 33378642). Reference: Reilly MB, et al. Widespread employment of conserved C. elegans homeobox genes in neuronal identity specification. bioRxiv 2022.04.29.490095; doi: https://doi.org/10.1101/2022.04.29.490095

CRISPR/Cas9 engineered tagged endogenous locus. Him. See description of strain OH15262 for full description of otIs669 NeuroPAL (Neuronal Polychromatic Atlas of Landmarks) transgene (Yemini E, et al. Cell. 2021 Jan 7;184(1):272-288.e11. PMID: 33378642). Reference: Reilly MB, et al. Widespread employment of conserved C. elegans homeobox genes in neuronal identity specification. bioRxiv 2022.04.29.490095; doi: https://doi.org/10.1101/2022.04.29.490095

CRISPR/Cas9 engineered tagged endogenous locus. Him. See description of strain OH15262 for full description of otIs669 NeuroPAL (Neuronal Polychromatic Atlas of Landmarks) transgene (Yemini E, et al. Cell. 2021 Jan 7;184(1):272-288.e11. PMID: 33378642). Reference: Reilly MB, et al. Widespread employment of conserved C. elegans homeobox genes in neuronal identity specification. bioRxiv 2022.04.29.490095; doi: https://doi.org/10.1101/2022.04.29.490095

Egl. See description of strain OH15262 for full description of otIs669 NeuroPAL (Neuronal Polychromatic Atlas of Landmarks) transgene (Yemini E, et al. Cell. 2021 Jan 7;184(1):272-288.e11. PMID: 33378642). Reference: Reilly MB, et al. Widespread employment of conserved C. elegans homeobox genes in neuronal identity specification. bioRxiv 2022.04.29.490095; doi: https://doi.org/10.1101/2022.04.29.490095

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.

otIs879 [sri-1p::NLS::GFP + pha-1(+)]. Reference: Reilly MB, et al. Widespread employment of conserved C. elegans homeobox genes in neuronal identity specification. bioRxiv 2022.04.29.490095; doi: https://doi.org/10.1101/2022.04.29.490095

ot1264 is a CRISPR deletion removing -10.8 kb to -1.8 kb before the first exon of ttx-1, made in the context of the ttx-1::GFP allele syb1679. Notably ttx-1 expression in RIB is lost, and RIB markers are off or dim. Reference: Reilly MB, et al. Widespread employment of conserved C. elegans homeobox genes in neuronal identity specification. bioRxiv 2022.04.29.490095; doi: https://doi.org/10.1101/2022.04.29.490095

Null allele. ot1466 is a CRISPR-engineered deletion removing the complete CDS. Normal growth & viability. Reference: Bayer E, et al. 2025. biorxiv: https://www.biorxiv.org/content/10.1101/2025.01.01.631014v2

vtIs1 [dat-1p::GFP + rol-6(su1006)] V. Rollers. Homozygous ot283 animals are 100% sterile and variable CEP phenotype. Maintain by picking single animals that segregate Sterile worms (the sterility is easy to see by eye because the sterile worms do not produce eggs or oocytes).

vtIs1 [dat-1p::GFP + rol-6(su1006)] V. Rollers. Homozygous ot284 animals are 100% sterile and variable CEP phenotype. Maintain by picking single animals that segregate Sterile worms (the sterility is easy to see by eye because the sterile worms do not produce eggs or oocytes).

vtIs1 [dat-1p::GFP + rol-6(su1006)] V. Rollers. Homozygous ot296 animals are 100% sterile and variable CEP phenotype. Maintain by picking single animals that segregate Sterile worms (the sterility is easy to see by eye because the sterile worms do not produce eggs or oocytes).

vtIs1 [dat-1p::GFP + rol-6(su1006)] V. Rollers. Homozygous ot298 animals are 100% sterile and variable CEP phenotype. Maintain by picking single animals that segregate Sterile worms (the sterility is easy to see by eye because the sterile worms do not produce eggs or oocytes).

otEx3091[ref-2::ven + rol-6(su1006)]. ot327 is larval lethal. otEx3091 carries a ref-2::venus translational fusion and rescues the lethality.

otIs114 [lim-6::GFP + rol-6(su1006)]. Rollers. Heterozygous strain. Heterozygotes should be fertile and segregate some sterile progeny. Maintain by picking plenty of animals with GFP in both ASEL and ASER; many of them will be sterile (homozygotes). otIs114 is normally expressed only in ASEL and excretory gland cell. Homozygous ot38; otIs114 is sterile and expresses GFP in both ASEL and ASER neurons. Heterozygotes display a semi-dominant, partially penetrant "ASEL + ASER" phenotype.

Pick wild-type to maintain. Heterozygotes are wild-type and should segregate wild-type heterozygotes, bcl-11 homozygotes (L1 larval arrest with starved appearance), and Dpy Unc homozygotes (Medium Dpy, Shrinker, poor backing). Maintain by picking wild-type and scoring for proper segregation of progeny. bcl-11 homozygotes have weak pharyngeal muscle contractions and pharyngeal lumen fails to open. cu10 is a 555 bp deletion (V:6360921..6361460). Predicted bcl-11 null allele. Reference: Vilimas, Tomas. (2004). Genes regulating ceh-22 and pharyngeal development of Caenorhabditis elegans.. University of Illinois at Chicago. Thesis. https://hdl.handle.net/10027/12060

Bacteria. Uracil auxotroph. E. coli B. Biosafety Level: BSL-1.

Bacteria. Streptomycin resistant strain of OP50 which is useful for growing C. elegans in bulk. Biosafety Level: BSL-1.

Bacteria. OP50 transformed with pETMCN-EK (derived from pET-28b: Ori colE1, KanR) Kan-resistant plasmid. Resistant to Kanamycin, Neomycin, G418. Reference: Giordano-Santini R, et al., (2010) Nature Methods. Aug 22. Biosafety Level: BSL-1.

CRISPR/Cas9 engineered 1515 bp deletion of gmap-1; flanking sequences ACCTATCCAAAGCTT and TGCCAAGACATTGAA. Dessication sensitive. Shorter body length. Increased permeability of the cuticle. Reference: Ngale Njume F, et al. iScience. 2022 Oct 14;25(11):105357. doi: 10.1016/j.isci.2022.105357. PMID: 36339267.

kyEx4787 [rig-3p::iGluSnFR + unc-122p::dsRed]. kyEx4786 [rig-3p:: RCaMP1e + unc-122p::GFP]. Pick animals with dsRed+ and GFP+ coelomocytes to maintain arrays. mgl-2(tm355) shows low rate of reversals. Strain carrying transgenes to monitor glutamate input and Ca activity in AVA. Reference: Katz M, et al. Nat Commun. 2019 Apr 23;10(1):1882.

kyEx4787 [rig-3p::iGluSnFR + unc-122p::dsRed]. kyEx4786 [rig-3p:: RCaMP1e + unc-122p::GFP]. Pick animals with dsRed+ and GFP+ coelomocytes to maintain arrays. mgl-2(tm355) mutation rescues the high reversal rate of glt-1(ok206). Strain carrying transgenes to monitor glutamate input and Ca activity in AVA. Reference: Katz M, et al. Nat Commun. 2019 Apr 23;10(1):1882.

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.

Male-female strain. From association with a terrestrial isopod, Trachelipus rathkii, that was collected from the Wright State University Biology Preserve, Dayton Ohio. Species ID confirmed by mating test with EM464.

Male-female strain. From association with a terrestrial isopod, Trachelipus rathkii, that was collected from the Wright State University Biology Preserve, Dayton Ohio. Species ID confirmed by mating test with EM464.

ccIs4443 [arg-1::GFP + dpy-20(+) ]. GFP activity in diverse differentiated non-striated mesodermal lineages. Strain might contain dpy-20(e1282) in background.

Temperature sensitive truncation allele of hlh-1. Animals are relatively healthy and fertile with M lineage transformations at 16C. At 25C, animals are very sick and few survive to fertility.

Homozygotes have decreased expression of tandem array transgenes, descreased fertility and high incidences of males at 25C. Maintain strain at 16C.

Unc. Decreased expression of tandem array transgenes, decreased fertility, and high incidences of males at 25C. Maintain at 16C.

ccIs4251 [(pSAK2) myo-3p::GFP::LacZ::NLS + (pSAK4) myo-3p::mitochondrial GFP + dpy-20(+)] I. Homozygotes have decreased expression of tandem array transgenes, decreased fertility, and high incidences of males at 25C. Maintain at 15C.

feIs5 [sur-5p::luciferase::GFP + rol-6(su1006)] X. dvIs14 [(pCL12) unc-54::beta 1-42 + (pCL26) mtl-2::GFP]. Rollers. mtl-2::GFP produces strong constitutive intestinal expression of GFP at all developmental stages. Expresses human AB peptide and accumulates B-amyloid fibrils. AB toxicity enhanced at higher temperatures. Strain is bioluminescent when provided with exogenous D-luciferin (potassium salt) due to sur-5 promoter driving expression of firefly (Photinus pyralis) luciferase (lacking the peroxisome tagging signal) fused in-frame to GFP(S65C). Pick animals with high levels of fluorescence to retain expression of luciferase transgene. This strain is for academic use only. This strain cannot be distributed to commercial organizations. This strain cannot be used for any commercial purpose or for work on human subjects. References: Lagido C, et al. BMC Physiol. 2008 Apr 2;8:7. McLaggan D, et al. PLoS One. 2012;7(10):e46503. Lagido C, et al. Toxicol Sci. 2009 May;109(1):88-95.

CRISPR/Cas9 engineered tagged endogenous locus. Reference: Reilly MB, et al. Widespread employment of conserved C. elegans homeobox genes in neuronal identity specification. bioRxiv 2022.04.29.490095; doi: https://doi.org/10.1101/2022.04.29.490095

CRISPR/Cas9 engineered tagged endogenous locus. Reference: Reilly MB, et al. Widespread employment of conserved C. elegans homeobox genes in neuronal identity specification. bioRxiv 2022.04.29.490095; doi: https://doi.org/10.1101/2022.04.29.490095

CRISPR/Cas9 engineered tagged endogenous locus. Reference: Reilly MB, et al. Widespread employment of conserved C. elegans homeobox genes in neuronal identity specification. bioRxiv 2022.04.29.490095; doi: https://doi.org/10.1101/2022.04.29.490095