Search Strains

Wild-type hermaphrodites segregating wild-type hermaphrodites, Unc-24 females, Unc Dpy hermaphrodites. Maintain by picking wild-type hermaphrodites. Deletion allele of fem-1, with unusual maternal effect. Reference: Spence AM, et al. Cell. 1990 Mar 23;60(6):981-90. Johnson CL & Spence AM.. Science. 2011 Sep 2;333(6047):1311-4.

Unbalanced two-fold arrest lethal. Clone 20 - 30 WT, screen F1 for presence of mup-1 homozygotes. Easily scored, they look like tiny little croissants.

Unbalanced two-fold arrest lethal. Clone 20 - 30 WT, screen F1 for presence of mup-1 homozygotes. Easily scored, they look like tiny little croissants.

Unbalanced two-fold arrest lethal. Clone 20 - 30 WT, screen F1 for presence of mup-1 homozygotes. Easily scored, they look like tiny little croissants.

Unbalanced two-fold arrest lethal. Clone 20 - 30 WT, screen F1 for presence of mup-1 homozygotes. Easily scored, they look like tiny little croissants.

Unbalanced two-fold arrest lethal. Clone 20 - 30 WT, screen F1 for presence of mup-1 homozygotes. Easily scored, they look like tiny little croissants.

eEx24 [tra-3(+) + rol-6(su1006)]. Pick Rollers to maintain. Roller hermaphrodites producing more Rol hermaphrodites and non-Rol hermaphrodites that produce broods of 100% Tra-3 XX pseudomales. Tra-3 mutant rescued by transgenic tra-3(+); useful source of homozygous m+z- tra-3 XX hermaphrodites. Reference: Barnes & Hodgkin (1996) PMID: 8887539.

Wild type-slightly Unc. Tc1 pattern high copy; different from RW7000. Bergerac isolate obtained by S. Brenner from Brun group. Caenorhabditis elegans wild isolate. CB subclone of Bergerac N62 (Tc1 pattern HCB). To obtain ECA243, a sequenced isolate of this wild strain, or other whole-genome sequence-verified wild strains, please request from the Caenorhabditis Natural Diversity Resource (www.caendr.org).

Wild type. Low Tc1 copy number; pattern X. [Obtained from Rothamsted by S. Brenner as 'Panagrellus redivivus'. Cross fertile with C. elegans N2.] Caenorhabditis elegans wild isolate. CB subclone of N3 (Tc1 pattern X). For whole-genome sequence-verified wild strains, please request from the Caenorhabditis Natural Diversity Resource (www.caendr.org).

Isolated from Carl Johnson's organic garden in Altadena, CA in 1974. Wild type. Low copy Tc1; pattern III. Caenorhabditis elegans wild isolate. CB subclone of GA-12 (Tc1 pattern III). To obtain ECA245, a sequenced isolate of this wild strain, or other whole-genome sequence-verified wild strains, please request from the Caenorhabditis Natural Diversity Resource (www.caendr.org).

Isolated from Carl Johnson's organic garden in Altadena, CA in 1974. Wild type. Low copy Tc1, pattern V. Caenorhabditis elegans wild isolate. CB subclone of GA-9 (Tc1 pattern V). For whole-genome sequence-verified wild strains, please request from the Caenorhabditis Natural Diversity Resource (www.caendr.org).

NOTE: Whole-genome analysis indicates that this stock is genotypically CB4858. Users interested in this strain are encouraged to obtain a verified CB4855-derivied strain. To obtain ECA247, a sequenced isolate of this wild strain, or other whole-genome sequence-verified wild strains, please request from the Caenorhabditis Natural Diversity Resource (www.caendr.org). Isolated from compost in Palo Alto, CA in 1982(?). Wild type (plg-1(e2001)). Low copy Tc1, pattern VI. Caenorhabditis elegans wild isolate CB subclone of Sta-5 (Tc1 pattern VI). Original stock isolated by T. Doniach.

Isolated from a pineapple field in Hawaii in 1972 by L. Hollen. Wild type. Low copy Tc1; pattern IX. C. elegans wild isolate. CB subclone of HA-8 (Tc1 pattern IX). See also WBPaper00005369. [NOTE (4-2014): Users reported abnormalities in CB4856 in late 2013 and early 2014. The current working stock at the CGC was thawed in 2-2014 from stock frozen in 1995.] For whole-genome sequence-verified wild strains, please request from the Caenorhabditis Natural Diversity Resource (www.caendr.org).

Isolated from decaying mushroom during rain in Claremont, CA in November 1972. Wild type. Low copy Tc1, pattern II. Reference WBG 10(2) 140-141 and 11(5) 60. Caenorhabditis elegans wild isolate. CB subclone of Cl2a (Tc1 pattern II). To obtain ECA249, a sequenced isolate of this wild strain, or other whole-genome sequence-verified wild strains, please request from the Caenorhabditis Natural Diversity Resource (www.caendr.org).

Isolated from Caltech flowerbed in the summer of 1971 (1973??) in Pasadena, CA. Wild type. Low copy Tc1; pattern XI. Caenorhabditis elegans wild isolate. EM subclone of PA1 (Tc1 pattern XI). To obtain ECA251, a sequenced isolate of this wild strain, or other whole-genome sequence-verified wild strains, please request from the Caenorhabditis Natural Diversity Resource (www.caendr.org).

Intersexual self-fertile XX hermaphrodites with Smg (protruding vulva) phenotype. Grows poorly, does best at 20C. Class B1 allele of tra-1 combined with smg-2(NMD), useful for selection of modifiers. Reference: Zarkower et al. (1994) PMID: 7520378

dpy-26(n199) is XO viable, XX lethal. eDp26 is a duplication of the left end of X, attached to X in an inverted orientation. Strain gives non-Dpy Egl hermaphrodites, intersexes, males and dead eggs.

eDp26 is a duplication of the left end of X, attached to X in an inverted orientation. CB4950 is homozygous for eDp26, which is XX viable and XO lethal. XX hermaphrodites are slightly small and slightly Egl.

Male/female strain which must be maintained by mating. spe-12(hc76) prevents self-fertility in hermaphrodites but does not impair spermatogenesis in males. Presence of him-8(e1489) increases male frequency.

eEx36 [F16E1 + rol-6(su1006)]. eEx36 carries multiple copies of fox-1, which confers a Xol phenotype and pRF4 which confers a Rol phenotype. dpy-26(n199) is XO viable and XX lethal. Strain consists mostly of Rol hermaphrodites and non-Rol males, all XO.

Male/female strain, propagated by crossing. eDp25 carries tra-1 gain-of-function allele. Anatomically normal XX females, tra-1(e1732) XO males, and intersexual tra-1(e1732) XX and e1732; eDp25 XO. References: Hodgkin (1987) PMID: 3428597. Zarkower et al. (1994) PMID: 7520378.

Male-female strain. Reference WBG 9(3) 121. Isolated from sugar cane in Trinidad by D.J. Hunt (Commonwealth Institute of Parasitology). [7/7/93: Scott Baird and David Fitch question whether this strain is really C. remanei.] [7/95: Not cross-fertile with the authentic C. remanei isolated by Walter Sudhaus.] Previously called C. remanei by the CGC. Walter Sudhaus has tentatively described this strain as Caenorhabditis sp.; this description is not offical and is contigent upon its being published. See WBPaper00002633 and WBPaper00003993. sp. 4 in Kiontke and Sudhaus Wormbook Ecology chapter.

Intragenic partial revertant of tra-1(e2272). Fertile hermaphrodites or females. Reference: Zarkower et al. (1994) PMID: 7520378.

Severely uncoordinated coiler, slow growing. Useful strain for selecting non-Sup-1 suppressors of unc-17(e245). Reference: Mathews et al. (2012) PMID: 23051648.

Vab XX hermaphrodites and XO males, viable at all temperatures. Adult hermaphrodite tail spike is invariably shortened and/or vacuolated, often also abnormal in larvae. Possible excretory cell abnormalities. Rays of adult male tail variably abnormal, other structures normal; males can mate.

ar221 is a tra-2 ts allele. Strain will grow at 15C as Egl hermaphrodites. When grown at 25C, all animals mature into X males, many of which are fertile. Good source of pure XX mating males. ar221 isolated by Jane Hubbard.

Him. Temperature-sensitive: infertile above 20C. Variably masculinized XX hermaphrodites segregating normal XO males. Stronger XX masculinization than null alleles of tra-3. Reference: Francis et al. (1995) PMID: 7713420.

fox-1(e2643) is a 1.2 kb deletion of fox-1; functional null. Hermaphrodites and males are WT in gross phenotype, slightly abnormal in hermaphrodite fertility and male mating. Synergistic masculinizing effects with some X chromosome deletions.

EMS-induced deletion from -583 to +1017, including first two exons and part of third exon. Probable null. No obvious phenotype.

Viable, Bus, resistant to Leucobacter Verde2, hypersensitive to Leucobacter Verde1. e2715 is a small deficiency (3191 bp) which removes all of the bus-10 exons and internal ncRNA genes ZK596.4 & ZK596.5. Reference: O'Rourke et al (in preparation).

ccIs4251 [(pSAK2) myo-3p::GFP::LacZ::NLS + (pSAK4) myo-3p::mitochondrial GFP + dpy-20(+)] I. Superficially WT hermaphrodites and males expressing GFP in nuclei and mitochondria of body wall muscles. Fluorescent body wall muscle nuclei can be seen by dissecting microscope with epifluoresence optics. Males mate poorly (ME 1/2). ccIs4251 mapped to LGI, + 2.5.

Dumpy (partially-suppressed Dpy-31). Sqt-3 mediated suppression of dpy-31 lethality. Reference: Novelli et al. (2004) PMID: 15579684.

Viable dumpy. Suppressor allele of dpy-17: lethality of dpy-31(e2770) suppressed by e2898. Reference: Novelli et al. (2006) PMID: 16452136.

Slightly dumpy. Variable cold-sensitive lethal (poor viability at 15C). Unusual missense allele (D297G) of sqt-3, suppresses dpy-31 lethality. Reference: Novelli et al. (2006) PMID: 16452136.

Squat, dumpy at 15C. Inviable at higher temperatures. Deletion of most of sqt-3 coding sequence. Null by antibody staining.

Weak dumpy. Variable tail abnormal at 20C or higher. Cold-sensitive: most arrest as pretzel-stage embryos, with some escapers arresting as severely distorted L1 larvae at 15. Unusual missense allele (K280E) of sqt-3, cold-sensitive lethal and suppressor of dpy-31 lethality. Reference: Novelli et al. (2006) PMID: 16452136.

bgIs312 [pes-6::GFP]. GFP expression in excretory cell only. Bus (resistant to infection by M. nematophilum and Leucobacter Verde2), hypersensitive to Leucobacter Verde1, bleach-sensitive, drug-sensitive; Him (high incidence of males). e2923 is a Mos1 insertion in bus-17 (ZK678.8). Reference: Yook & Hodgkin (2007), Genetics 175: 681-697

Bus: resistant to M. nematophilum, Leucobacter Verde2; hypersensitive to Leucobacter Verde1. Strong nonsense mutation of bus-12 (Gln123Amber); reference null allele. Reference: Gravato-Nobre et al. (2011) PMID: 20980242.

No obvious phenotype, apparently wild-type sensitivity to pathogens. Derivative of RB1663, further out-crossed into wild-type background. Reference: O’Rourke et al. (2005) PMID: 16809667.

Gross phenotype wildtype, increased sensitivity to some bacterial pathogens. Derivative of RB1285, further out-crossed into wild-type background. References: O’Rourke et al. (2005) PMID: 16809667. Gravato-Nobre et al. (2016) PMID: 27525822.

Viable, Bus (M. nematophilum resistant), resistant to Leucobacter Verde2, hypersensitive to Leucobacter Verde1. e2737 is a ~4.5 kb deficiency which removes all of the bus-10 exons, internal ncRNA genes ZK596.4 & ZK596.5, and ZK596.1. Reference: O'Rourke et al (in preparation).

Bus, bleach-sensitive, resistant to Leucobacter Verde2 and Leucobacter Verde1. e2715 is a small deficiency (3191 bp) which removes all of the bus-10 exons and internal ncRNA genes ZK596.4 & ZK596.5. Reference: O'Rourke et al (in preparation).

Skiddy, bleach-sensitive, drug-sensitive. Resistant to infection by Leucobacter Verde1 and Leucobacter Verde2. lj22 is a missense mutation (R32C) in bus-8A and might also affect bus-8B (out-of-frame 5'exon U1). Reference: O'Rourke et al (in preparation).

Small, skiddy, slow-growing, bleach-sensitive; resistant to Leucobacter Verde1. Intragenic pseudorevertant of bus-8(lj22), P63L = KLHPGDWW> KLHLGDWW. lj22 is a missense mutation (R32C) in bus-8A and might also affect bus-8B (out-of-frame 5'exon U1). Reference: O'Rourke et al (in preparation).

Weak Bus, viable on Leucobacter Verde1. e3071 is a missense intragenic revertant (P97S) of e2883 (G378E). Reference: Stroud et al (in preparation).

ccIs4251 [(pSAK2) myo-3p::GFP::LacZ::NLS + (pSAK4) myo-3p::mitochondrial GFP + dpy-20(+)] I. mIs12 [myo-2p::GFP + pes-10p::GFP + F22B7.9p::GFP] II. frIs7 [nlp-29p::GFP + col-12p::DsRed] IV. uIs69 [pCFJ90(myo-2p::mCherry) + unc-119p::sid-1] V. Mapping strain. This strain is homozygous for integrated fluorescence markers on LG I, II, IV and V, all of which are easily and independently scored using a fluorescent dissecting microscope, plus an easily scored visible marker (dpy-17) for LGIII. The good markers on all five autosomes facilitate linkage assignment of unmapped mutations, and enable rapid replacement of chromosomes when outcrossing heavily mutagenized strains such as those from the Million Mutation Project.

Viable, small, slow-growing, bleach-sensitive, resistant to Leucobacter Verde1 and Leucobacter Verde2. Lethality of subs-4(e3048) suppressed by bus-22(e3108) mutation. Reference: O'Rourke et al (in preparation).

eEx861 [bus-8(U1,2)::GFP + unc-119(+)]. Pick wild-type (non-Unc) to maintain. bus-8 exon U1 mutation rescued by small U1,2 transgene. lj22 is a missense mutation (R32C) in bus-8A and might also affect bus-8B (out-of-frame 5'exon U1). Reference: O'Rourke et al (in preparation).

eEx730 [ptr-15(+) + sur-5p::GFP]. Pick GFP+ to maintain. Him. Lethal 1118bp deletion allele of ptr-15 rescued by eEx730. Non-GFP animals will be dead eggs and dead hatchlings. References: O’Rourke et al. (in revision 2024), Kuwabara et al. (in prep.)

Val186Glu. Null allele. Slightly cold-sensitive; dominant suppressor of unc-17(e245). Lethal with erd-2.2(RNAi). Also known as sup-2(e997). Reference: Mathews EA, et al. Genetics. 2021;218(4):iyab065. doi:10.1093/genetics/iyab0. PMID: 33914877.