mCherry reporter inserted into C-terminus of endogenous lin-46 locus. Superficially wild-type. Fluorescent signal is very dim and bleaches very quickly. Reference: Ilbay O, et al. C. elegans LIN-28 controls temporal cell-fate progression by regulating LIN-46 expression via the 5’UTR of lin-46 mRNA. bioRxiv 697490; doi: https://doi.org/10.1101/697490.

GFP reporter inserted into C-terminus of endogenous lin-28 locus. Superficially wild-type. Reference: Ilbay O, et al. C. elegans LIN-28 controls temporal cell-fate progression by regulating LIN-46 expression via the 5’UTR of lin-46 mRNA. bioRxiv 697490; doi: https://doi.org/10.1101/697490.

Egl. Vulvaless due to lin-3. Precocious VPC divisions and adult alae due to lin-28.

Male-female strain. Reference WBG 11(4):89. See also WBPaper00001874. May crawl off the plates. Isolated by Bill Fixsen at a rest area on the turnpike in Conn. Previously called WS9-6 and C. vulgaris NH and C. vulgariensis by the CGC. Walter Sudhaus has tentatively described this strain as C. remanei ssp. vulgaris; this description is not official and is contigent upon its being published. See WBPaper00002633.

yfSi1 [nspf-1p::nspf-1::6xHis::tbb-2 3' UTR + loxP, II:8420157]. C-terminal 6xHis-tagged NSPF-1 allows visualization of NSPF seminal fluid protein localization in males and hermaphrodites. Transgene inserted into ttTi5650 MosSCI site (II:8420157) using CRISPR/Cas9. Reference: Kasimatis KR, et al. (2022) No evidence of sexual conflict for a novel sperm-derived seminal fluid protein in Caenorhabditis nematodes. bioRxiv doi: https://doi.org/10.1101/2022.09.22.509081

Caenorhabditis sp. 23 Male-female strain. Caenorhabditis elegans wild isolate. H2. Isolated from pill bug in Juifeng Village, Wuhan City, Hubei Province. Lat: 30°30'51"; Lon: 114°29'42".

Caenorhabditis sp. 23 Male-female strain. Caenorhabditis elegans wild isolate. H3. Isolated from pill bug in Juifeng Village, Wuhan City, Hubei Province. Lat: 30°30'51"; Lon: 114°29'42".

Caenorhabditis sp. 23 Male-female strain. Caenorhabditis elegans wild isolate. H4. Isolated from pill bug in a Chinese cabbage field, Juifeng Village, Wuhan City, Hubei Province. Lat: 30°30'51"; Lon: 114°29'42".

Caenorhabditis sp. 23 Male-female strain. Caenorhabditis elegans wild isolate. H5. Isolated from pill bug under roadside haystack, Juifeng Village, Wuhan City, Hubei Province. Lat: 30°30'51"; Lon: 114°29'42".

Caenorhabditis sp. 23 Male-female strain. Caenorhabditis elegans wild isolate. H6. Isolated from pill bug under rotten grass, Juifeng Village, Wuhan City, Hubei Province. Lat: 30°30'51"; Lon: 114°29'42".

Caenorhabditis sp. 23 Male-female strain. Caenorhabditis elegans wild isolate. H7. Isolated from soil under rotten grass, Juifeng Village, Wuhan City, Hubei Province. Lat: 30°30'51"; Lon: 114°29'42".

Caenorhabditis sp. 23 Male-female strain. Caenorhabditis elegans wild isolate. H8. Isolated from pill bug in a vegetable field, Juifeng Village, Wuhan City, Hubei Province. Lat: 30°30'51"; Lon: 114°29'42".

Caenorhabditis sp. 23 Male-female strain. Caenorhabditis elegans wild isolate. H9. Isolated from soil in an eggplant field, Juifeng Village, Wuhan City, Hubei Province. Lat: 30°30'51"; Lon: 114°29'42".

Caenorhabditis sp. 23 Male-female strain. Caenorhabditis elegans wild isolate. H10. Isolated from soil near the lotus pond, Juifeng Village, Wuhan City, Hubei Province. Lat: 30°30'51"; Lon: 114°29'42".

B0228.5 Homozygous. Exhibits slightly shortened lifespan compared to wild-type. Outer Left Sequence: cgccgtggttaacctcttta. Outer Right Sequence: ttatcggacaataggcggac. Inner Left Sequence: ctgttgactcccaacaccct. Inner Right Sequence: ttgcaaaagaaattttcgcc. Inner Primer PCR Length: 2357. Estimated Deletion Size: about 850 bp. This strain was provided by the C. elegans Gene Knockout Project at OMRF, which is part of the International C. elegans Gene Knockout Consortium, which should be acknowledged in any publications resulting from its use. http://www.mutantfactory.ouhsc.edu/ Reference: Miranda-Vizuete A, et al. FEBS Lett. 2006 Jan 23;580(2):484-90.

Superficially wild-type. tm2047 removes bases -128 to +380 relative to the start of the trxr-2 coding sequence (removing part of the proximal promoter). Reference: Cacho-Valdez B, et al. Antioxid Redox Signal. 2012 Jun 15;16(12):1384-400.

sv47 deletion removes bases 721-2383 of the trxr-1 genomic sequence (as measured from the start of the trxr-1 coding sequence). tm2047 removes bases -128 to +380 relative to the start of the trxr-2 coding sequence (removing part of the proximal promoter). tm2047 outcrossed 6x. sv47 outcrossed 10x. Reference: Cacho-Valadez B, et al. Antioxid Redox Signal. 2012 Jun 15;16(12):1384-400.

nIs281 [myo-2::RFP] integrated near qC1. Recombination between nIs281 and qC1 has been reported. Fails to complemement all markers on qC1. Heterozygotes are WT and segregate WT, Dpy Sterile, and tm3574 homozygotes. gsr-1(tm3574) is embryonic lethal. gsr-1(m+,z-) animals are viable and reach adulthood with no visible phenotype and lay eggs that invariably arrest at the pregastrula stage; they are slightly short-lived, have increased mitochondrial fragmentation, decreased mitochondrial DNA content and have induced mitochondrial UPR measured by hsp-6::GFP levels. gsr-1(m-,z-) have aberrant perinuclear distribution of interphasic chromatin. NOTE: The RFP-labeled balancer is reportedly not entirely stable in this strain and will occasionally segregate recombinants of two types: sterile RFP+ animals (most likely homozygous qC1 [nIs281] worms that are able to grow to adulthood but do not develop germline), and non-RFP animals that lay viable progeny. Maintain by picking fertile RFP+ animals and confirming that non-RFP progeny lay 100% arrested embryos. Reference: Mora-Lorca JA, et al. Free Radic Biol Med. 2016 Jul;96:446-61.

3xFLAG and eGFP tags inserted into the endogenous hlh-30 locus. Superficially wild-type. Diffuse GFP in basal growing conditions and strong nuclear labeling upon diverse stresses like starvation, Staphylococcus aureus infection, arsenite, diethylmaleate, heat shock or levamisole. GFP expression is only visible at high magnification; not discernible with a fluorescence stereoscope. Insertion can be detected by PCR. Forward primer sequence: 5' acgcacgcaactgcttta; Reverse primer (in 3'UTR): 5' aataacctgcgattctgg; Reverse primer (in eGFP): CTTGAAGAAGATGGTACGCTC. Expected products (For&Rev 3'UTR): 910 bp (WT)/1878 bp (syb1452). Expected products (For&Rev eGFP): no band (WT)/811 bp (syb1452). Insertion allele generated by SunyBiotech and out-crossed twice with VZ Lab N2. Reference: Martina JA, et al. EMBO J. 2021 Feb 1;40(3):e105793

Auxin-inducible degron (AID) and EmGFP tags inserted at the C-terminus of the endogenous raga-1 locus using CRISPR/Cas9. Can be used in conjunction with tissue-specific TIR1-expressing lines to degrade RAGA-1 protein via the Auxin Inducible Degron system. Reference: Smith HJ, et al. PLOS Genetics 19(9): e1010938. https://doi.org/10.1371/journal.pgen.1010938. PMID: 37721956.

Auxin-Inducible Degron (AID) tag was inserted into the endogenous let-363 coding sequence via CRISPR/Cas9. This strain can be combined with TIR1-expressing strains to induce degradation of LET-363. Reference: Smith HJ, et al. PLoS Genetic. 2023 Sep 18;19(9):e1010938. doi: 10.1371/journal.pgen.1010938. PMID: 37721956.

ajIs1 [rCesC05A9.1::GFP + dpy-5(+)] X. GFP expression driven by 300bp sequence upstream of pgp-5 gene. Weak intestinal fluorescence is visible under normal conditions. Derived by insertion of sEx864 in parental strain BC10030. Pathogens, heavy metals, and toxins (e.g. Pseudomonas aeruginosa, cadmium, G418) further induce GFP expression. dpy-5(e907) was likely removed by outcrossing, but might still be in the background. Reference: McKay et al, Cold Spring Harbor Symposia on Quantitative Biology 68: 159-169 2004 (WBPaper00006525); WBPaper00031023; WBPaper00048491.

hda-1(cw2) mutants are viable as homozygotes, although many die as embryos or larvae. Severely uncoordinated with defective vulval development and reduced fertility. Reference: Zinovyeva AY, et al. Dev Biol. 2006 Jan 1;289(1):229-42. PMID: 16313898

Loss of cell fusion in hypodermis (epithelial fusion failures). Viable and fertile as homozygotes. Tail-spike defect in all young larvae, less visible in older larvae and adults. oj55 appears to cause incomplete loss of function, as many cells fuse in postembryonic development. Homozygous males have tail and mating defects. ES-3. Cloned: ORF C26D10.5 encodes a type-I membrane glycoprotein with a single TM domain.

jcIs1 [ajm-1::GFP + unc-29(+) + rol-6(su1006)] IV. Loss of cell fusion in hypodermis (epithelial fusion failures). Viable and fertile as homozygotes. Tail-spike defect in all young larvae, less visible in older larvae and adults. oj55 appears to cause incomplete loss of function, as many cells fuse in postembryonic development. Homozygous males have tail and mating defects. ES=3. Cloned: ORF C26D10.5 encodes a type-I membrane glycoprotein with a single TM domain. 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: Mohler WA, et al. Curr Biol. 1998 Sep 24;8(19):1087-90.

Heterozygotes have myo-2::GFP [qIs48] strongly expressed in the pharynx and are viable at 25C. 100% of sep-1 homozygotes are strongly Sterile Unc at 25C (at 20C, 100% are Sterile but no so Unc). Up to 30% of the homozygotes are Sterile at 16C. hT2[qIs48] homozygotes are dead. Note: qIs48 has been observed to recombine off hT2, typically leaving behind a functional homozygous viable hT2 with Bli-4 phenotype.

ojIs34 [GFP::car-1 + unc-119(+)]. N'-tagged GFP::CAR-1 (Y18D10A.17) fusion. Labels P-granules and small cytoplasmic puncta in all cells. Bombardment with pNL1.6::GFP::unc-119 (pfj-1::pie-1 promoter driving GFP::Y18D10A.17 (N-terminal) with unc-119 rescuing fragment).

Homozygous embryonic lethal mutation balanced by bli-4- and GFP-marked translocation. Maintain at 15 C. Heterozygotes are WT with pharyngeal GFP signal, and segregate WT GFP, arrested hT2 aneuploids, and non-GFP e2406 homozygotes (embryonic arrest). Homozygous hT2[bli-4 let-? qIs48] inviable. Pick WT GFP and check for correct segregation of progeny to maintain. Reference: Bembenek J, et al. Curr Biol (2010) Feb 9;20(3):259-64.

ruIs32 [pie-1p::GFP::H2B + unc-119(+)] III. Homozygous embryonic lethal mutation balanced by bli-4- and GFP-marked translocation. Maintain at 15 C. Heterozygotes are WT with pharyngeal GFP signal, and segregate WT GFP, arrested hT2 aneuploids, and non-GFP e2406 homozygotes (embryonic arrest). Homozygous hT2 [bli-4 let-? qIs48] inviable. Pick WT GFP and check for correct segregation of progeny to maintain. Reference: Bembenek J, et al. Curr Biol (2010) Feb 9;20(3):259-64.

ojIs58 [pie-1p::sep-1::GFP + unc-119(+)] III. Homozygous embryonic lethal mutation balanced by bli-4- and GFP-marked translocation. Maintain at 15 C. Heterozygotes are WT with pharyngeal GFP signal, and segregate WT GFP, arrested hT2 aneuploids, and non-GFP e2406 homozygotes (embryonic arrest). Homozygous hT2[bli-4 let-? qIs48] inviable. Pick WT GFP and check for correct segregation of progeny to maintain. Reference: Bembenek J, et al. Curr Biol (2010) Feb 9;20(3):259-64.

itIs153 [pie-1p::par-2::GFP + rol-6(su1006) + N2 genomic DNA]. Maintain at 24 degrees; sick at 25 C, GFP lost at 20C. itIs153 is an integrated derivitive of axEx1094. Reference: Kumfer et al. (2010) Mol Bio Cell21(2):266-77.

Maintain under normal condition. Heterozygotes are WT with pharyngeal GFP signal, and segregate WT GFP, arrested nT1[qIs51] aneuploids, and non-GFP ok586 homozygotes (Lvl). Homozygous nT1[qIs51] inviable. Pick WT GFP and check for correct segregation of progeny to maintain. Reference: Kumfer et al. (2010) Mol Bio Cell21(2):266-77.

C. briggsae strain. Reduced fecundity at 20°C and 25°C. Generated by CRISPR/Cas9 in AF16 background, prg-1(how21) is a 5 bp deletion located 47 bp downstream of the start codon that causes frameshift. prg-1(how21) is presumed null; consistent with previous findings that the stability of piRNAs and Piwi protein are co-dependent in C. elegans, the overall abundance of 21 U-RNAs in Cbr-prg-1(how21) was reduced to ~1% of wild-type. Reference: Pastore B, et al. RNA Biol. 2022 Jan;19(1):1276-1292. doi: 10.1080/15476286.2022.2149170.

Heterozygotes are WT with pharyngeal GFP signal, and segregate WT GFP+, arrested hT2 aneuploids, and non-GFP Sterile homozygotes. qIs48 [myo-2::GFP + pes-10::GFP + ges-1::GFP]. Homozygous hT2 animals are inviable. May have him-8(e1489) in background, but unsure.

Heterozygotes are WT with pharyngeal GFP signal, and segragate WT GFP+, arrested hT2 aneuploids, and non-GFP Dpy Unc homozygotes. Homozygous hT2[bli-4 let-? qIs48] are inviable.

T07D3.7. Homozygous viable, contains an out of frame deletion removing nucleotides encoding amino acids 34-374. This strain cannot be distributed to for-profit companies. Do not distribute this strain; other labs should request it from the CGC. URL: http://www.celeganskoconsortium.omrf.org.

Pick GFP+ to maintain. sprDf1 is a ~0.25 Mb microdeletion allele on the left arm of chromosome V that removes 32 adjacent protein-coding genes, including mex-5. Heterozygous animals (GFP+) are fertile, but sometimes die by bursting, will have polynucleated embryos, and form uterine tumors ~6 days after hatching. sprDf1 homozygotes (GFP-) have maternal effect lethality, are small, sterile, form large uterine tumors that consist of poly nucleated embryos, have squashed vulvas, are uncoordinated, and die by bursting within eight days of hatching. nT1 homozygotes are inviable (dead eggs). Reference: Antkowiak KR, et al. G3 (Bethesda). 2023 Nov 13:jkad258. doi: 10.1093/g3journal/jkad258. PMID: 37956108.

Homozygous fertile; reduced brood size. mex-3(spr5) is a CRISPR/Cas9 engineered deletion removing 488 bp of the mex-3 3´UTR. Derived by modification of parental strain DG4269 mex-3(tn1753[gfp::3xflag::mex-3]) I. Reference: Albarqi MMY & Ryder SP. PLoS Genet 2021 Aug 23;17(8):e1009775. PMID: 34424904

Homozygous fertile. mex-3(spr6) is a CRISPR/Cas9 engineered deletion removing 142 bp of the mex-3 3´UTR. Derived by modification of parental strain DG4269 mex-3(tn1753[gfp::3xflag::mex-3]) I. Reference: Albarqi MMY & Ryder SP. PLoS Genet 2021 Aug 23;17(8):e1009775. PMID: 34424904

Homozygous fertile. mex-3(spr7) is a CRISPR/Cas9 engineered deletion removing 134 bp of the mex-3 3´UTR. Derived by modification of parental strain DG4269 mex-3(tn1753[gfp::3xflag::mex-3]) I. Reference: Albarqi MMY & Ryder SP. PLoS Genet 2021 Aug 23;17(8):e1009775. PMID: 34424904

Homozygous fertile; reduced brood size. mex-3(spr5) is a CRISPR/Cas9 engineered deletion removing 190 bp of the mex-3 3´UTR. Derived by modification of parental strain DG4269 mex-3(tn1753[gfp::3xflag::mex-3]) I. Reference: Albarqi MMY & Ryder SP. PLoS Genet 2021 Aug 23;17(8):e1009775. PMID: 34424904

opIs56 [egl-1p::2xNLS::GFP]. opIs56 is a low copy integrant of 3 kb 5' sequence from egl-1 fused to 2xNLS GFP. unc-119(ed3) should be outcrossed. Low basal GFP expression in embryos, meiotic germ cells and several neurons. GFP expression can be induced by ionizing radiation in all germ cells. Best viewed with dissected gonads.

Heterozygotes are WT GFP+ and segregate non-glowing hus-1 homozygotes and very rare homozygous hT2 glowing animals, and dead eggs. 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 gut promoter driving GFP in the intestine. hus-1(op244) mutants from homozygous parents show an incompletely penetrant maternal effect embryonic lethality. Note: qIs48 has been observed to recombine off hT2, typically leaving behind a functional homozygous viable hT2 with Bli-4 phenotype.

Heterozygotes are WT with pharyngeal GFP signal, and segregate WT GFP, arrested nT1[qIs51] aneuploids, and non-GFP ccz-1 homozygotes (produce only arrested embryos with spindle orientation defects, accumulate vesicles, and problems engulfing apoptotic corpses). Homozygous nT1[qIs51] inviable. Pick WT GFP and check for correct segregation of progeny to maintain. Reference: Nieto C, et al. J Cell Sci. 2010 Jun 15;123(Pt 12):2001-7.

High zinc transcriptional activation - deficient (Zad-d). Avoid high zinc concentrations. [NOTE: this strain was previously described as hizr-1(am285); the correct allele name hizr-1(am286).] Reference: Warnhoff K, et al. PLoS Biol. 2017 Jan 17;15(1):e2000094.

Gain-of-function allele: modified ligand binding domain constitutively binds HZA element. High zinc transcriptional activation - constitutive (Zad-c). [NOTE: this strain was previously described as hizr-1(am286); the correct allele name hizr-1(am285).] Reference: Warnhoff K, et al. PLoS Biol. 2017 Jan 17;15(1):e2000094.

Non-Glp; remains fertile even with sygl-1(RNAi). Endogenous lst-1 locus tagged with a 3xFLAG N-terminally. Visible in cytoplasm of 5-6 cell diameters of distal germline in young adults. Reference: Kocsisova Z, et al. Development. 2019 Apr 23;146(8).

Non-Glp; remains fertile even with lst-1(RNAi). Endogenous sygl-1 locus tagged with a 3xFLAG N-terminally. Visible in cytoplasm of 10-12 cell diameters of distal germline in young adults. Reference: Kocsisova Z, et al. Development. 2019 Apr 23;146(8).

Homozygous maternal effect lethal mutation balanced by GFP-marked translocation. Heterozygotes are WT with pharyngeal GFP signal, and segregate WT GFP, arrested nT1[qIs51] aneuploids, and non-GFP am315 homozygotes (maternal effect lethal). Homozygous nT1[qIs51] inviable. Pick wild-type GFP and check for correct segregation of progeny to maintain. 3xFLAG epitope allows antibody detection of full-length PCN-1. Reference: Kocsisova Z, et al. BMC Dev Biol. 2018 May 30;18(1):12.

Weak severity of lin-45 raf allele: WT viability, vulval induction and fertility but effectively suppresses the let-60(n1046gf) Muv phenotype. Unc.