Search Strains

Heterozygotes are WT and segregate WT, Hmp inviable embyros (Hmp: humpback-defective body elongation, abnormal bulges on dorsal side) and Daf Sma (ts Daf).

Heterozygotes are WT and segregate WT, DpyUnc and sterile hermaphrodites. Maintain by picking fertile WT hermaphrodites. q465 previously called mog-6. cyn-4 previously called cyp-4. Do not distribute this strain; other labs should request it from the CGC.

Heterozygotes are WT and segregate WT, SmaUnc and Steriles. Do not distribute this strain; other labs should request it from the CGC. eft-3(q145) previously called glp-3(q145).

qEx319 [lag-2::cMyc + rol-6(su1006)].  Rollers.  Extrachromosomal array carrying myc-tagged LAG-2 protein partially rescues lag-2(null).  About 70% of progeny are Lag.  Survivors are Rollers.  Reference: Crittenden et al., Mol Biol Cell. 2006 Jul;17(7):3051-61.

qIs50 is an insertion of ccEx9747 with markers: myo-2::GFP expressed brightly in the pharynx throughout development, pes-10::GFP expressed in embryos, and a gut promoter (F22B7.9) driving GFP in the intestine. Segregates non-glowing Dpys that are Mes (produce only sterile progeny) and glowing Unc heterozygotes. nT1[unc-?(n754) let-? qIs50] is also known as DnT1[qIs50]. qIs50 is apparently inserted on DnT1. qIs50 is somewhat dimmer than the similar qIs51. Do not distribute this strain; other labs should request it directly from the CGC.

Heterozygotes are WT and glow, segregate non-glowing Dpy Steriles. qIs48 is an insertion of ccEx9747 (carries myo-2::GFP, pes-10::GFP, and a gut enhancer fused to GFP) onto the hT2 chromosome and is homozygous lethal. Do not distribute this strain; other labs should request it from the CGC. Note: qIs48 has been observed to recombine off hT2, typically leaving behind a functional homozygous viable hT2 with Bli-4 phenotype.

qIs48 is an insertion of ccEx9747 with markers: myo-2::GFP expressed brightly in the pharynx throughout development, pes-10::GFP expressed in embryos, and a gut promoter driving GFP in the intestine, and is homozygous lethal. Segregates WT glowing hets, non-glowing sterile Dpys, very rare homozygous hT2 glowing animals, and dead eggs. Do not distribute this strain; other labs should request it directly from the CGC. Note: qIs48 has been observed to recombine off hT2, typically leaving behind a functional homozygous viable hT2 with Bli-4 phenotype.

Heterozygotes are WT. q544 is homozygous embryonic lethal. hT2[qIs48] homozygotes are inviable. PIck GFP+ wild-type to maintain. Note: qIs48 has been observed to recombine off hT2, typically leaving behind a functional homozygous viable hT2 with Bli-4 phenotype. Do not distribute this strain; other labs should request it from the CGC.

Heterozygotes are medium Dpy and glowing. Hets throw small, sterile DpyUncs and dead eggs. hT2[bli-4(e937) qIs48] is homozygous lethal. qIs48 is an insertion of ccEx9747 with markers myo-2::GFP expressed in the pharynx throughout development, pes-10::GFP expressed in the embryo, and gut promoter F22B7.9 driving GFP in the intestine. Do not distribute this strain; other labs should request it directly from the CGC. Note: qIs48 has been observed to recombine off hT2, typically leaving behind a functional homozygous viable hT2 with Bli-4 phenotype.

Segregates WT green-glowing heterozygotes and non-glowing Fogs. qIs48 is an insertion of ccEx9747 (carries myo-2::GFP, pes-10::GFP, and a gut enhancer fused to GFP) onto the hT2 chromosome and is homozygous lethal. Do not distribute this strain; other labs should request it from the CGC. Note: qIs48 has been observed to recombine off hT2, typically leaving behind a functional homozygous viable hT2 with Bli-4 phenotype.

Segregates WT green-glowing heterozygotes and non-glowing steriles. qIs48 is an insertion of ccEx9747 (carries myo-2::GFP, pes-10::GFP, and a gut enhancer fused to GFP) onto the hT2 chromosome and is homozygous lethal. Do not distribute this strain; other labs should request it from the CGC. Note: qIs48 has been observed to recombine off hT2, typically leaving behind a functional homozygous viable hT2 with Bli-4 phenotype.

q624 has variable gonad defects and can be maintained as a homozygote. qIs48 is an insertion of ccEx9747 (carries myo-2::GFP, pes-10::GFP, and a gut enhancer fused to GFP) onto the hT2 chromosome and is homozygous lethal. Do not distribute this strain; other labs should request it from the CGC. Note: qIs48 has been observed to recombine off hT2, typically leaving behind a functional homozygous viable hT2 with Bli-4 phenotype.

Homozygous. No obvious phenotype by dissecting scope. Do not distribute this strain; other labs should request it from the CGC.

Heterozygotes are WT and GFP+. Segregate Gon worms which are GFP-. nT1[qIs51] homozygotes are inviable. Do not distribute this strain; other labs should request it from the CGC.

Heterozygotes are WT, but frequently sterile when balanced by hT2[qIs48]. q736 is homozygous embryonic lethal. (Approx. 5% of hets are Sterile when balanced by WT.) hT2[qIs48] homozygotes are inviable. q736 is a deletion of sys-1 deleting from nucleotide 1803 to nucleotide 3992 of the genomic sequence (A of start ATG is position 1). Note: qIs48 has been observed to recombine off hT2, typically leaving behind a functional homozygous viable hT2 with Bli-4 phenotype. Do not distribute this strain; other labs should request it from the CGC.

To maintain, check individual fertile worms for both Sep and Fog offspring. sep-1 homozygotes are sterile at 20C and 25C (Sterile and Unc at 25C), and mostly normal at 15C. fog-1; fbf-1 fbf-2 homozygotes have small germ lines and are often Muv. Best to maintain at 25C for scoring. Do not distribute this strain; other labs should request it from the CGC.

Heterozygotes are WT and GFP+. qIs48 is an insertion of ccEx9747 with markers: myo-2::GFP expressed brightly in the pharynx throughout development, pes-10::GFP expressed in embryos, and a gut promoter driving GFP in the intestine, and is homozygous lethal. Do not distribute this strain; other labs should request it directly from the CGC. Note: qIs48 has been observed to recombine off hT2, typically leaving behind a functional homozygous viable hT2 with Bli-4 phenotype. q772 is embryonic lethal.

Heterozygotes are WT and GFP+. qIs48 is an insertion of ccEx9747 with markers: myo-2::GFP expressed brightly in the pharynx throughout development, pes-10::GFP expressed in embryos, and a gut promoter driving GFP in the intestine, and is homozygous lethal. Do not distribute this strain; other labs should request it directly from the CGC.

qIs89 [gon-14::gon-14::VENUS + S. cerevisiae DNA]. gon-14::VENUS is broadly expressed in cell nuclei starting at the 50-100 cell stage of embryogenesis and throughout larval development. Partially concentrated in nuclear speckles. qIs89 rescues the 25C Gon and Ste defects of q686. Low penetrance of sterility and lethality in the strain. Do not distribute this strain; other labs should request it from the CGC.

qIs90 [ceh-22b::VENUS (pJK1082) + influenza viral DNA]. qIs90 is an integrated complex array; integration site not mapped. ceh-22b::VENUS can be easily identified by its expression in the pharynx. Do not distribute this strain; other labs should request it directly from the CGC.

qIs24 [lag-2p::GFP]. Maintain by picking individual animals with green DTCs and green pharynx and scoring offspring for Fems and Fbfs. fem-3 is not well balanced by qIs24. fbf-1 fbf-2 homozygotes are germline proliferation defective and make only sperm. fem-3 homozygotes make only oocytes. fbf-1 fbf-3; fem-3 proliferates more than fbf-1 fbf-2 and makes only oocytes; also Muv. qIs24 contains lag-2::GFP; Distal Tip Cells are green; homozygotes are Rollers and heterozygotes Roll weakly. mIn1 is Dpy and GFP+ in the pharynx. Do not distribute this strain; other labs should request it from the CGC.

Heterozygotes are WT and GFP+. qIs48 is an insertion of ccEx9747 with markers: myo-2::GFP expressed brightly in the pharynx throughout development, pes-10::GFP expressed in embryos, and a gut promoter driving GFP in the intestine, and is homozygous lethal. Do not distribute this strain; other labs should request it directly from the CGC. Note: qIs48 has been observed to recombine off hT2, typically leaving behind a functional homozygous viable hT2 with Bli-4 phenotype. rnp-8 homozyotes are GFP- and look like WT. Slow L4 to Adult transition.

Heterozygotes are WT with pharyngeal GFP signal, and segregate WT GFP, arrested hT2 aneuploids, and non-GFP q793 homozygotes (viable and somewhat fertile). Homozygous hT2[bli-4 let-? qIs48] inviable. Pick WT GFP and check for correct segregation of progeny to maintain.

Heterozygotes are WT and GFP+. qIs48 is an insertion of ccEx9747 with markers: myo-2::GFP expressed brightly in the pharynx throughout development, pes-10::GFP expressed in embryos, and a gut promoter driving GFP in the intestine, and is homozygous lethal. Do not distribute this strain; other labs should request it directly from the CGC. Note: qIs48 has been observed to recombine off hT2, typically leaving behind a functional homozygous viable hT2 with Bli-4 phenotype. PCR using 3 primers: primer A: TCA GCC GAC AAT CTC CGA; primer B: GTA CTG ATT GTA TCC ACC GGC; primer C: GCT CAT AGA AAA GCG ATG G. WT band = 0.5 kb; heterozygote bands = 0.8 and 0.5 kb (double bands), tm2435 bands = 0.8 kb.

Homozygous lethal deletion chromosome balanced by bli-4- and GFP-marked translocation. Heterozygotes are WT with pharyngeal GFP signal, and segregate WT GFP, arrested hT2 aneuploids, and non-GFP sterile homozygotes. Homozygous hT2[bli-4 let-? qIs48] inviable. Pick WT GFP and check for correct segregation of progeny to maintain. Reference: Kershner AM, et al. Proc Natl Acad Sci U S A. 2014 Mar 11;111(10):3739-44.

qSi29 [sygl-1p(LBSmut)::H2B::GFP::sygl-1 3'end + unc-119(+)]. Superficially wild-type. Expression of H2B::GFP in the loop region of the germline. qSi29 contains 2kb upstream of the sygl-1 start with the four LAG-1 binding sites (LBS) mutated (RTGRGAA->RacRGAA) driving H2B::GFP under the control of the sygl-1 3' intergenic region. Reference: Kerschner AM, et al. Proc Natl Acad Sci U S A. 2014 Mar 11;111(10):3739-44.

Homozygous lethal deletion chromosome balanced by bli-4- and GFP-marked translocation. Heterozygotes are WT with pharyngeal GFP signal, and segregate WT GFP, arrested hT2 aneuploids, and non-GFP sterile homozygotes. Homozygous hT2[bli-4 let-? qIs48] inviable. Pick WT GFP and check for correct segregation of progeny to maintain. Reference: Austin J & Kimble J. Cell. 1987 Nov 20;51(4):589-99.

Homozygous lethal deletion chromosome balanced by GFP-marked translocation. Heterozygotes are WT with pharyngeal GFP signal, and segregate WT GFP, arrested nT1[qIs51] aneuploids, and non-GFP q426 homozygotes (variable phenotypes including sterile, L1 lethal, and small sterile adults with rectal protrusion and occasional bent pharynx). Homozygous nT1[qIs51] inviable. Pick WT GFP and check for correct segregation of progeny to maintain. Reference: Kadyk LC & Kimble J. Development. 1998 May;125(10):1803-13. doi: 10.1242/dev.125.10.1803. PMID: 9550713.

qSi44 [glp-1::6xMyc6xHis + Cbr-unc-119(+)] II. Homozygous viable. Variable body length. May still carry unc-119(ed3) in the background. Reference: Sorensen EB, et al. A toolkit of tagged glp-1 alleles reveals strong glp-1 expression in the germline, embryo, and spermatheca. microPublication Biology, 2020(06). http://doi.org/10.17912/micropub.biology.000271

Homozygous sterile deletion chromosome balanced by bli-4- and GFP-marked translocation. Heterozygotes are WT with pharyngeal GFP signal, and segregate WT GFP, arrested hT2 aneuploids, and non-GFP q172 homozygotes (sterile). Homozygous hT2[bli-4 let-? qIs48] inviable. Pick WT GFP and check for correct segregation of progeny to maintain. Reference: Crittenden SL, et al. Development. 1994 Oct;120(10):2901-11. doi: 10.1242/dev.120.10.2901. PMID: 7607080.

qSi29 [sygl-1p(LBSmut)::H2B::GFP::sygl-1 3'end + unc-119(+)]. teIs1 [oma-1::GFP + unc-119(+)]. Superficially wild-type. Expression of H2B::GFP in the loop region of the germline. qSi29 contains 2kb upstream of the sygl-1 start with the four LAG-1 binding sites (LBS) mutated (RTGRGAA->RacRGAA) driving H2B::GFP under the control of the sygl-1 3' intergenic region. oma-1::GFP expression in oocyte cytoplasm. teIs1 rescues GFP expression in silenced germline trangenes more effectively at 25C. Reference: Kerschner AM, et al. Proc Natl Acad Sci U S A. 2014 Mar 11;111(10):3739-44.

Heterozygotes are WT with pharyngeal GFP signal, and segregate WT GFP, arrested hT2 aneuploids, and non-GFP q827 homozygotes (viable and somewhat fertile). Homozygous hT2[bli-4 let-? qIs48] inviable. Pick WT GFP and check for correct segregation of progeny to maintain. Reference: Robinson-Thiewes S, et al. G3 (Bethesda). 2022 Mar 4;12(3):jkab439. doi: 10.1093/g3journal/jkab439. PMID: 35100350.

qSi150 [sygl-1p::3X flag::sygl-1::tbb-2 3' UTR + Cbr-unc-119(+)] II. Phenotypically gravid, grows as a homozygote. Increased SYGL-1 protein expression, expanded progenitor zone, expanded GSC pool. Reference: Shin H. et al. PLoS Genet. 2017 Dec 12;13(12):e1007121.

Heterozygotes are WT with pharyngeal GFP signal, and segregate WT GFP, arrested hT2 aneuploids, and non-GFP q869 homozygotes (viable and somewhat fertile). Homozygous hT2[bli-4 let-? qIs48] inviable. Pick WT GFP and check for correct segregation of progeny to maintain. q869 is a deletion of the entire lst-1 coding sequence as well as 139 bp upstream of M71 start codon and 228 bp downstream of the coding sequence. Reference: Haupt KA, et al. Development. 2019 Oct 17;146(20):dev181644. doi: 10.1242/dev.181644. PMID: 31515205

1xOLLAS tag inserted into endogenous nos-3 locus via CRISPR/Cas9 engineering.

qSi369 [sygl-1p::24xMS2 loops::3xflag::sygl-1::sygl1 3'UTR]. qSi370 [mex-5p:: MS2 Coat Protein::linker::sfGFP::tbb-2 3' UTR::gpd-2 intergenic sequence::H2B::mCherry::unc-54 3' UTR]. Superficially wild-type with expression of sfGFP and nuclear mCherry in germline. qSi369 and qSi370 constitute an MS2 system which allows live visualization of sygl-1 nascent transcripts in the C. elegans germline in a glp-1 mutant background. qSi370 can be prone to silencing, especially after severe starvation; silencing of GFP or mCherry expression can occur independently of one another. Maintain by picking animals with bright GFP and mCherry expression. Reference: Lee C, et al. Dev Cell. 2019 Aug 19;50(4):426-435.e4.

Heterozygotes are wild-type and segregate wild-type heterozygotes, glp-1(q35) homozygotes (Muv steriles), eT1 homozygotes (Unc-36), and males. glp-1(q35) has a semi-dominant multi-vulva phenotype as well as the loss-of-function Glp phenotype (sterility and embryonic lethality). The q35 mutation is a nonsense mutation that eliminates 122 C-terminal amino acids including a PEST sequence. The C terminus was thought to contain a negative regulatory domain that inactivates glp-1 in the VPCs; the inappropriate glp-1(q35) activity can substitute for lin-12 vulval fate determination. References: Austin J & Kimble J. Cell. 1987 Nov 20;51(4):589-99. Mango S, et al. Nature. 1991 Aug 29;352(6338):811-5.

qSi369 [sygl-1p::24xMS2 loops::3xflag::sygl-1::sygl1 3'UTR]. qSi370 [mex-5p:: MS2 Coat Protein::linker::sfGFP::tbb-2 3' UTR::gpd-2 intergenic sequence::H2B::mCherry::unc-54 3' UTR]. Superfically wild-type with expression of sfGFP and nuclear mCherry in germline. qSi369 and qSi370 constitute an MS2 system which allows live visualization of sygl-1 nascent transcripts in the C. elegans germline in a glp-1 mutant background. Reference: Lee C, et al. Dev Cell. 2019 Aug 19;50(4):426-435.e4.

qSi369 [sygl-1p::24xMS2 loops::3xflag::sygl-1::sygl1 3'UTR]. qSi370 [mex-5p:: MS2 Coat Protein::linker::sfGFP::tbb-2 3' UTR::gpd-2 intergenic sequence::H2B::mCherry::unc-54 3' UTR]. Heterozygotes are wild-type with pharyngeal GFP signal, and segregate wild-type GFP+ heterozygotes, non-GFP pharynx q224 homozygotes (Glp sterile at 20-25C) and dead eggs (hT2 homozygotes). All animals are sfGFP + in the germline, with distal and proximal transcription sites in the nucleus. qSi369 and qSi370 constitute an MS2 system which allows live visualization of sygl-1 nascent transcripts in the C. elegans germline in a glp-1 mutant background. Reference: Lee C, et al. Dev Cell. 2019 Aug 19;50(4):426-435.e4.

Pick GFP+ to maintain. CRISPR-engineered RAM mutations in endogenous glp-1 locus with C-terminal 4xV5 tag. Heterozygotes are WT with pharyngeal GFP signal, and segregate WT GFP, arrested hT2 aneuploids, and non-GFP q1035 homozygotes (sterile). Homozygous hT2[bli-4 let-? qIs48] inviable. Maintain by picking GFP+ heterozygotes and checking for correct segregation of progeny to maintain a balanced stock. Derived by modification of parental strain JK5933 glp-1(q1000).

3xV5 tag inserted into endogenous puf-8 locus via CRISPR/Cas9 engineering. Reference: Ferdous AS, et al. Development. 2023 May 1;150(9):dev201705. PMID: 37070766.

1xV5 tag inserted into endogenous gld-3 locus, specifically tagging GLD-3L isoform, via CRISPR/Cas9 engineering.

qSi380 [mex-5p::eGFP::3xOLASS::linker::his-58::MODC pest::3xboxb::tbb-2 3'UTR::SL2 trans-splice site::mCherry::3xV5::linker::his-58::MODC pest::mutant 3xboxb::tbb-2 3'utr::tbb-1 intergenic region] IV. Worms are fertile at 20C. Improved tethering assay for use in the C. elegans germline. GFP reporter mRNA is under control of a germline-expressed mex-5 promoter and has three boxB stem-loops in its 3'UTR. The RNA-binding protein (RBP) is tagged with lamda-N. The nascent transcript driven by mex-5 promoter is resolved by trans-splicing into two mRNAs that encode distinct reporters. The GFP reporter RNA has three functional boxB stem-loops in its 3'UTR; the mCherry reporter 3'UTR has three mutated boxB stem-loops that do not bind lamda-N and therefore provides an internal control. Addition of an OLLAS tag to GFP and a V5 tag to mCherry enables sensitive immunostaining and immunoblotting. Reference: Doenier J, et al. RNA. 2021 Jun;(6)643-652. PMID: 33727224.

2xV5 tag inserted into endogenous gld-2 locus via CRISPR/Cas9 engineering.

GGSGG linker::3xV5 epitope tag inserted into C-teminus of endogenous lst-1 locus with a deletion removing a portion of the lst-1 locus. q1115 retains the N-terminal 1-210) region of LST-1. Reference: Haupt KA, et al. 2019 Oct 17;146(20):dev181644. PMID: 31515205.

qSi380 [mex-5p::eGFP::3xOLASS::linker::his-58::MODC pest::3xboxb::tbb-2 3’utr::SL2 trans-splice site::mCherry::3xV5::linker::his-58::MODC pest::mutant 3xboxb::tbb-2 3'utr::tbb-1 intergenic region] IV. Worms are fertile at 20C. Improved tethering assay for use in the C. elegans germline. GFP reporter mRNA is under control of a germline-expressed mex-5 promoter and has three boxB stem–loops in its 3?UTR. The RNA-binding protein (RBP) is tagged with lamda-N. The nascent transcript driven by mex-5 promoter is resolved by trans-splicing into two mRNAs that encode distinct reporters. The gfp reporter RNA has three functional boxB stem–loops in its 3?UTR; the mCherry reporter 3?UTR has three mutated boxB stem–loops that do not bind lamda-N and therefore provides an internal control. Addition of an OLLAS tag to GFP and a V5 tag to mCherry enables sensitive immunostaining and immunoblotting. Reference: Doenier J, et al. RNA. 2021 Jun;(6)643-652. PMID: 33727224.

Homozygous maternal effect lethal double mutant balanced by GFP-marked translocation. Heterozygotes are WT with pharyngeal GFP signal, and segregate WT GFP+, arrested GFP+ nT1[qIs51] aneuploids, and non-GFP puf-3(q966) puf-11(q971) homozygotes (maternal effect lethal). Homozygous nT1[qIs51] inviable. Pick wild-type GFP and check for correct segregation of progeny to maintain.

Heterozygotes are wild-type and segregate wild-type, Unc-36 eT1 homozygotes, UncSteriles, and arrested eT1 aneuploid progeny (dead eggs). Maintain by picking wild-type and check for correct segregation of progeny to maintain. eT1 previously known as unc-36(e873). Do not distribute this strain; other labs should request it from the CGC.

Pick GFP+ to maintain. Heterozygotes are WT with pharyngeal GFP signal, and segregate WT GFP, arrested hT2 aneuploids, and non-GFP q869 q828 homozygotes (sterile). Homozygous hT2[bli-4 let-? qIs48] inviable. Maintain by picking GFP+ heterozygotes and checking for correct segregation of progeny to maintain a balanced stock. Reference: Lynch TR, et al. Development. 2022 Apr 1;149(7):dev200332. PMID: 35394007.

qIs56 [lag-2p::GFP + unc-119(+)]. q1201 is a 125 bp deletion causing a frameshift in mpk-1B without affected mpk-1A. Heterozygous animals Roll and have GFP+ distal tip cells. Segregates roller GFP(+) heterozygotes and non-roller GFP(-) mpk-1 homozygotes (sterile, but form a vulva). qC1 [dpy-19(e1259) glp-1(q339) qIs26] homozygotes are not viable. Endogenous mpk-1 locus tagged with a single V5 tag inserted into the mpk-1b-specific exon to specifically label the N-terminus of the MPK-1B protein, and two tandem OLLAS tags inserted into the C-terminus, labeling both MPK-1A and MPK-1B isoforms. Reference: Robinson-Thiewes et al. Cell Reports, In Press.