Search Strains

rexEx2 [ges-1p::GFP::Halo + mec-7p::mRFP]. Pick GFP+ to maintain. Mosaic expression of green fluorescence (GFP) in the intestine and red fluorescence (mRFP) in touch-receptor neurons.

rexEx3 [myo-3p::GFP::Halo + mec-7p::mRFP]. Pick GFP+ to maintain. Mosaic expression of green fluorescence (GFP) in body-wall muscle and red fluorescence (mRFP) in touch-receptor neurons.

Inversion which may serve as a balancer for the center of LG V. Maternal effect lethal allele which results in 57% embryonic arrest, 40% larval arrest, and 3% which survive to be fertile adults with a variety of defects including Egl, Unc and Vab.

muIs32 [mec-7p::GFP + lin-15(+)]. Egl, semi-Sterile, embryonic & larval lethality. Lethal in trans to Df. Defective fusion of anchor cell to uterine seam. Maintain under normal conditions. Reference: Choi J, et al., Dev Biol. 2006 Sep 1;297(1):87-102.

juIs76 [unc-25p::GFP + lin-15(+)] II. GFP expression in GABAergic motor neurons. [NOTE: (10/11/2018) CZ13799 was sent as a replacement for CZ1200, which was found to carry background mutations affecting neuron morphology.] Derived by outcrossing CZ1200 to remove lin-15(n765) and unidentified background mutations. Reference (for original juIs76 strain): Huang X, et al. Neuron. 2002 May 16;34(4):563-76.

juIs319 [col-19p::GCaMP3 + col-19p::tdTomato]. col-19p::GCaMP3 expression is induced by either laser or needle wounding. col-19 is an adult-specific collagen and is not expressed until the end of the L4 larval stage. Reference: Xu S & Chisholm AD. Curr Biol. 2011 Dec 6;21(23):1960-7.

juSi94 [GFP11::rps-18 + Cbr-unc-119(+)] II. Superficially wild-type. No fluorescence; carries only one portion of a split GFP reporter for visualization of ribosomes. Allows inducible GFP fluorescence of ribosomes when combined with GFP1-10 expression in tissue of choice. Reference: Noma et al Elife. 2017 Aug 2;6. pii: e26376. doi: 10.7554/eLife.26376.

juSi94 [GFP11::rps-18 + Cbr-unc-119(+)] II. juEx5515 [unc-25p::GFP1-10 + unc-25p::mCherry::rab-3 + ttx-3p::RFP]. Pick ttx-3::RFP to maintain. GABAergic motor neuron-specific expression of split GFP reporter allows visualization of ribosomes in neurons, and GABAergic motor neuron-specific expression of mCherry::rab-3. Reference: Noma et al Elife. 2017 Aug 2;6. pii: e26376. doi: 10.7554/eLife.26376.

juSi94 [GFP11::rps-18 + Cbr-unc-119(+)] II. juIs463 [flp-13p::GFP1-10 + ttx-3p::RFP]. DD motor neuron-specific expression of split GFP reporter allows visualization of ribosomes in those neurons. Reference: Noma et al Elife. 2017 Aug 2;6. pii: e26376. doi: 10.7554/eLife.26376.

Gain-of-function allele isolated sem-4; juIs1 screen in 1997. ju89 has slightly semi-dominant effects, and the gf phenotype is most obvious in homozygous. This outcrossed strain does not carry a sem-4 mutation or juIs1. References: Kurup N, et al. Curr Biol. 2015 Jun 15;25(12):1594-605. Kurup N, et al. PLoS Genet. 2017 Jun 21;13(6):e1006844.

juSi164 [mex-5p::HIS-72::miniSOG + Cbr-unc-119(+)] III. Maintain in the covered box to avoid unnecessary exposure to ambient light. Wild-type behavior in movement, mating, growth and brood size. Upon blue light treatment (460 nm LED light for 30 min at 4 Hz with 2 mW/mm2), Histone-miniSOG in the germline can induce heritable mutations. Wild-type behavior in movement, mating, growth and brood size. MosSCI insertion into oxTi444 on Chr. III. Reference: Noma K & Jin Y. Nature Communications, 2015.

juEx6908 [nmr-1p::PH::miniSOG(Q103L) + nmr-1p::mCherry + ttx-3::GFP]. Pick GFP+ to maintain. Interneuron expression of mCherry and PH-miniSOG (mini Singlet Oxygen Generator). Reference: Xu S & Chisholm AD. Sci Rep. 2016 Feb 10;6:21271.

juEx6911 [unc-25p::PH::miniSOG(Q103L) + unc-25p::mCherry + ttx-3::GFP]. Pick GFP+ to maintain. Expression of mCherry and PH-miniSOG (mini Singlet Oxygen Generator) in GABAergic motor neurons. Reference: Xu S & Chisholm AD. Sci Rep. 2016 Feb 10;6:21271.

juEx6916 [myo-3p::PH::miniSOG(Q103L) + myo-3p::mCherry + ttx-3::GFP]. Pick GFP+ to maintain. Expression of mCherry and PH-miniSOG (mini Singlet Oxygen Generator) in body wall muscles. Reference: Xu S & Chisholm AD. Sci Rep. 2016 Feb 10;6:21271.

juEx7101 [col-19p::PH::miniSOG(Q103L) + ttx-3::RFP]. Pick RFP+ to maintain. Adult epidermal expression of PH-miniSOG (mini Singlet Oxygen Generator). Reference: Xu S & Chisholm AD. Sci Rep. 2016 Feb 10;6:21271.

juEx7103 [unc-17p(beta)::PH::miniSOG(Q103L) + acr-2p::mCherry + ttx-3::RFP]. Pick RFP+ to maintain. Expression of mCherry and PH-miniSOG (mini Singlet Oxygen Generator) in cholinergic motor neurons. Reference: Xu S & Chisholm AD. Sci Rep. 2016 Feb 10;6:21271. [NOTE: strain was previously described as carrying ttx-3::GFP, but appears to be ttx-3::RFP instead.]

juEx7105 [mec-4p::PH::miniSOG(Q103L) + mec-4p::mCherry + ttx-3::RFP]. Pick RFP+ to maintain. Expression of mCherry and PH-miniSOG (mini Singlet Oxygen Generator) in mechanosensory neurons. Reference: Xu S & Chisholm AD. Sci Rep. 2016 Feb 10;6:21271.

ltSi953 [mec-18p::vhhGFP4::ZIF-1::operon-linker::mKate2::tbb-2 3'UTR + Cbr-unc-119(+)] II. GFP tag inserted into the C-terminus of the endogenous gip-2 locus using CRISPR-Cas9 engineering. Tissue-specific expression of GFP nanobody::ZIF-1 fusion promotes ubiquitylation and subsequent degradation of GFP-tagged gip-2 protein in touch receptor neurons. Touch receptor neurons are red labeled with mKate2. Reference: Development. 2017 Jul 15;144(14):2694-2701. PMID: 28619826.

ltSi953 [mec-18p::vhhGFP4::ZIF-1::operon-linker::mKate2::tbb-2 3'UTR + Cbr-unc-119(+)] II. GFP tag inserted into the C-terminus of the endogenous dhc-1 locus using CRISPR-Cas9 engineering. Tissue-specific expression of GFP nanobody::ZIF-1 fusion promotes ubiquitylation and subsequent degradation of GFP-tagged dhc-1 protein in touch receptor neurons. Touch receptor neurons are red labeled with mKate2. Reference: Development. 2017 Jul 15;144(14):2694-2701. PMID: 28619826.

Endogenous unc-44 locus tagged for UNC-44L::GFP expression. The long isoform of UNC-44 is specific to neuronal expression. Reference: Chen F, Chisholm AD, Jin Y. Development. 2017 Feb 15;144(4):698-707.

muIs32 [mec-7p::GFP + lin-15(+)]. Heterozygotes are WT with pharyngeal GFP signal, and segregate WT GFP, arrested hT2 aneuploids, and non-GFP nmat-2(ju1514) homozygotes (sterile adults). Homozygous hT2[bli-4 let-? qIs48] inviable. Pick WT GFP and check for correct segregation of progeny to maintain. Reference: Kim KW, et al. Elife. 2018 Nov 21;7:e39756. doi: 10.7554/eLife.39756. PMID: 30461420

juSi364 [unc-17Bp::3xFLAG::eif-3.g::SL2::GFP] IV. GFP expression in cholinergic motor neurons. Convulsing worms. Strain is suitable for neuron-type eCLIP. Reference: Blazie S, et al. Elife. 2021 Jul 29;10:e68336. PMID: 34323215.

Heterozygotes are WT with pharyngeal GFP signal, and segregate WT GFP, arrested nT1[qIs51] aneuploids, and non-GFP micu-1 homozygotes. Homozygous nT1[qIs51] inviable. Pick WT GFP and check for correct segregation of progeny to maintain. Reference: Tang NH, et al. Curr Biol. 2020 Jan 15. pii: S0960-9822(19)31694-X. doi: 10.1016/j.cub.2019.12.061.

muIs32 [mec-7p::GFP + lin-15(+)]. GFP-labeled touch receptor neurons showing wild-type-like morphology. Derived by out-crossing parental ok3307 strain to remove a linked mutation in rpm-1. Reference: Jin EJ & Jin Y. (2022). A mutation linked to degt-1(ok3307) in C. elegans strain VC2633 affects rpm-1. microPublication Biology. 10.17912/micropub.biology.000565. PMC ID: PMC9073554.]

jsIs973 [mec-7p::mRFP + unc-119(+)] III. Strong RFP cytosolic marker for the mechanosensory neurons. ju1903 deletion removes N-terminus of EFA-6 and disrupts all known isoforms. No visible GFP::EFA-6 due to ju1903 deletion. Reference: Sandhu A., et al. Cell Reports 2024 Oct 22;43(10):114776. doi: 10.1016/j.celrep.2024.114776. PMID: 39305484.

juIs1 [unc-25p::snb-1::GFP + lin-15(+)] IV. GFP expression in presynaptic terminals of GABAergic DD and VD motor neurons and RME neurons. Maintain under normal conditions. Reference: Hallan SJ and Jin Y. Nature. 1998 Sep 3;395(6697):78-82.

Suppressor of rpm-1.

juIs198 [unc-25p::YFP::rab-5 + ttx-3p::RFP] V. YFP-labeled RAB-5 synaptic vesicles in GABAergic motor neurons. Reference: Sann SB, Crane MM, Lu H, Jin Y. PLoS One. 2012;7(6):e37930.

Suppressor of rpm-1.

juIs14 [acr-2p::GFP + lin-15(+)] IV. GFP expression in cholinergic motor neurons. Reference: Hallam SJ, et al. Development. 2000 Oct;127(19):4239-52.

Starved. Lacks M3 spikes. Do not distribute this strain; other labs should request it from the CGC. This strain cannot be used for any commercial purpose or for work on human subjects.

Egl. Semi-dominant suppressor of eat-11.

Moderate resistance to ivermectin. NOTE: originally described as carrying ad1302, but reported to actually be ad1305; see strain JD740 for verified avr-14(ad1302) I; avr-15(ad1051) V double mutant. Do not distribute this strain; other labs should request it from the CGC.

adEx1519 [M03F4.3::GFP + lin-15(+)]. Putative serotonin receptor. Maintain by picking non-Muv. n765 is temperature-sensitive.

adEx1750 [pmk-3::GFP + rol-6(su1006)]. Pick Rollers to maintain. Nuclear GFP in anterior and posterior intestine. [NOTE: adEx1750 contains a F42G8.4::GFP reporter construct. This array had been previously described as carrying a pmk-1::GFP reporter; the description of the array was updated in CGC records ~2016. islo-1, pmk-3, pmk-2, and pmk-1 are in an operon. The order of genes was described in Berman et al. as [pmk-1(F42G8.4)->pmk-2(F42G8.3)->pmk-3(B0218.3)], but the official WormBase gene names were assigned in reverse order [pmk-1(B0218.3)->pmk-2(F42G8.3)->pmk-3(F42G8.4)]. See Berman K, et al. Mol Cell Biol Res Commun. 2001 Nov;4(6):337-44. PMID: 11703092 for additional information.]

Bacteria. Comamonas sp., a bacterium on which C. elegans grows particularly well. Str-R. DA1877 is derived from a bacterium isolated from soil in the Dallas area by Boris Shtonda in 2002. That strain was called H39 in Avery, L, Shtonda, BB (2003), "Food transport in the C elegans pharynx", J Exp Biol 206: 2441-2457. It was identified as genus Comamonas by 16S rDNA sequencing, as described in the paper. L. Avery isolated a spontaneous streptomycin-resistant variant by selecting for growth in LB broth + 200 ug/ml streptomycin sulfate. This strain, when spread on NGMSR plates, gave rise to faster-growing papillae; one of these was streaked out to get DA1877. Biosafety Level: BSL-1.

Bacteria. Str-R. L10 papilla 2; sporulation-defective mutant. This is a low-quality food that is difficult for the worms to eat, and is useful for studies of the effect of food on behavior, physiology, etc. [NOTE: This strain grows better on NGM than on LB media in CGC.] Described in J Exp Biol 206: 2441-2457. Biosafety Level: BSL-1.

Abnormal feeding. Strong relaxation defective. NOTE: This strain is reportedly homozygous for an unknown X-linked unc mutation (10/31/2017).

Clumps. npr-1 pka bor-1.

Extensively backcrossed to N2. Background strain for most of the feeding-defective mutant screens.

Causes worms to aggregate (Bor). Social.

Clumps. Found in strain RC301. See 1987 Worm Meeting Abstract Book page 162. npr-1 pka bor-1. For whole-genome sequence-verified wild strains, please request from the Caenorhabditis Natural Diversity Resource (www.caendr.org).

Long. Clumps. npr-1 pka bor-1.

Muv. ad450 worms, when undisturbed, fall asleep. While asleep they do not move or pump. Disturbing them wakes them up, and while awake they act fairly normal. ad450 previously called eat-7.

Note: ad702 was isolated in an RC301 background. DA702 was not tested for the presence of npr-1(g320) following three rounds of outcrossing to N2 Bristol. DA702 does not display clumping behavior, so it's likely that DA702 has the Bristol npr-1. New stock rec'd 10/13/99.

Eat mutant. Stuffs corpus and isthmus. Abnormality in m6 and m7 contraction timing. Displays clumping behavior; isolated in an RC301 background, so it's likely to have the RC301 bor-1 mutation.

Suppressor of gpb-2 (a.k.a. eat-11) arecoline hypersensitivity. Unc. Egl.

Bacteria. E. coli. Str-R. Uracil auxotroph. DA837 is derived from OP50. DA837 is harder for worms to eat than most E. coli strains. Some mild Eat mutant worms are easier to distinguish from WT when grown on DA837 than when grown on other E. coli strains. Biosafety Level: BSL-1.

domEx253 [mec-4p::Chrimson::GFP + unc-122p::RFP]. Pick animals with red fluorescence in coelomocytes to maintain. Red-light optogenetic line for gentle touch receptor neurons (TRN). Transgenic animals expressing the red light-activated channelrhodopsin Chrimson into TRNs using the mec-4 promoter. In animals grown on all trans-retinal-containing medium, red light stimuli trigger behaviors similar to those evoked by gentle touch. Note that very strong blue light stimuli may also activate Chrimson. Reference: Schild LC & Glauser DA. Genetics. 2015 Aug;200(4):1029-34. doi: 10.1534/genetics.115.177956. PMID: 26022242.

domEx261[mec?4p::CoChR::GFP + unc?122p::RFP]. Pick animals with red fluorescence in coelomocytes to maintain. High sensitivity blue-light optogenetic line for gentle touch receptor neurons (TRN). Transgenic animals expressing the high-sensitivity blue light-activated channelrhodopsin CoChR into TRNs using the mec-4 promoter. In animals grown on all trans-retinal-containing medium, low intensity blue light stimuli trigger behaviors similar to those evoked by gentle touch. Reference: Schild LC & Glauser DA. Genetics. 2015 Aug;200(4):1029-34. doi: 10.1534/genetics.115.177956. PMID: 26022242.