Search Strains

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).

Hermaphrodites are WT at all stages. Adult males abnormal with swollen distorted bursal anatomy. Male mating efficiency is zero. Natural mutation present in original KR314 isolate. For whole-genome sequence-verified wild strains, please request from the Caenorhabditis Natural Diversity Resource (www.caendr.org).

Heterozygotes are WT and segregate WT, Lethals (L2/L3 arrest at 20C, some survive to sterile adults at 15C), and DpyRol. Not balanced well: get recombinants. Must maintain by picking hets at each generation and check for proper segregants in F1.

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

Caenorhabditis elegans wild isolate. Wild isolate with unique Tc1 pattern. Bor phenotype. Isolated by P.S. Grewal before 1991, from mushroom farm near Taunton, England. Sent to Ann Burnell in 1991. Sent from Burnell to J. Hodgkin in Jan. 1992. Sent to CGC in Jan. 1997. For whole-genome sequence-verified wild strains, please request from the Caenorhabditis Natural Diversity Resource (www.caendr.org).

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.

At 20C or 25C heterozygotes are semi-Dpy and segregate semi-Dpys (heterozygotes), Dpys (dpy-25/dpy-25) and animals which arrest as Dpyish young larvae (let-552/let-552). Maintain by picking semi-Dpy. At 15C it is difficult to distinguish between let-552 homozygotes and dpy-25 homozygotes (e817 is inviable at 15C).

Hermaphrodites have abnormal truncated or blebbed tails, pale appearance, some excretory cell abnormalities, especially in adults. Males have variably abnormal tails, some are able to mate.

Self-fertile hermaprodite or female. Protruding vulva. tra-1(e2272) XX homozygotes are sterile with abnormal gonads; e2272 mutation is partly suppressed by NMD (smg-2(e2008)), hence double mutants are fertile. Reference: Zarkower et al. (1994) PMID: 7520378.

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.

Unable to propagate indefinitely: lines become sterile from F10-F28, with short telomeres and fused chromosomes. Hypersensitive to X-irradiation; weak Him phenotype; strong Him phenotype in later generations resulting from X-A fusions. Cross once or twice, freeze down many F2 mrt-2 plates, and go back to these plates every two months for fresh a mrt-2 line. A BstN1 RFLP makes the mrt-2 mutation easy to track.

Obligate XO hermaphrodite. Low fertility, segregating many dead XX and nullo-X zygotes. Double mutant combining two null or near-null mutations. Reference: van den Berg MCW, et al. Genetics. 2006 Jun;173(2):677-83. doi: 10.1534/genetics.106.056093. PMID: 16582430.

mIs12 [myo-2p::GFP + pes-10p::GFP + F22B7.9p::GFP] II. Hermaphrodites expressing compound GFP reporter (see PD4790). Strong pharyngeal muscle expression, easily scored by GFP dissecting scope. mIs12 is tightly linked to unc-4 II, and not to LG III or IV as previously reported. mIs12 homozygous males mate well (ME3).

Some hermaphrodites (<50%) have single small protrusion posterior to vulva, occassional vulval rupture.

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.

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.

eEx650 [ilys-3p::GFP + unc-119(+)]. Pick wild-type to maintain. Transcriptional reporter transgene for ilys-3. Reference: Gravato-Nobre et al. (2016) PMID: 27525822.

eEx652 [ilys-1p::DsRed2 + unc-119(+)]. Pick wild-type to maintain. Transcriptional reporter for ilys-1Reference: Gravato-Nobre et al. (2016) PMID: 27525822.

eEx665 [trf-1p::dsRed2 + unc-119(+)]. Pick wild-type to maintain. Transcriptional reporter for trf-1. Reference: Wang et al. (2015) PMID: 26687621.

eEx650 [ilys-4p::GFP + unc-119(+)]. Transcriptional reporter for ilys-4. Reference: Gravato-Nobre et al. (2016) PMID: 27525822.

eEx671 [ilys-5p::GFP; unc-119(+)]. Pick wild-type (non-Unc) to maintain. Transcriptional reporter for ilys-5. Reference: Gravato-Nobre et al. (2016) PMID: 27525822.

eEx754 [ilys-3p::ilys-3::mCherry::unc-54 3'UTR + sur-5p::GFP]. Pick GFP+ to maintain. Translational reporter for ilys-3. Reference: Gravato-Nobre et al. (2016) PMID: 27525822.

Viable, poor bacterial grinding, increased sensitivity to bacterial pathogens. Reference: Gravato-Nobre et al. (2016) PMID: 27525822.

Viable, but with poor bacterial grinding and increased susceptibility to some bacterial pathogens. Reference: Gravato-Nobre et al. (2016) PMID: 27525822.

eEx781 [ilys-6p::GFP + unc-119(+)]. Pick wild-type (non-Unc) to maintain. Transcriptional reporter for ilys-6. Reference: Gravato-Nobre et al. (2016) PMID: 27525822.

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.

Left hand Roller. Incomplete penetrance. M-MATING+POOR <1%WT.

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.

crEx498 [dpy-14p::ptr-15(+) + sur-5p::GFP]. Pick animals with nuclear GFP throughout body to maintain. Lethal ptr-15 deletion allele marked with pharyngeal GFP [loxP ::myo-2p::GFP::unc-54 3’UTR + rps-27p::neoR::unc-54 3’UTR::loxP]; lethality rescued by hypodermal expression of PTR-15 form crEx498 array. Non-nuclear GFP animals (only pharyngeal expression) will be dead eggs and dead hatchlings. Derived from parental strain VC4151. References: O’Rourke et al. (in revision 2024).

M-MATING+POOR <1%WT. Recessive. Poor movement forward and backward. Unc-36 phenotype. Dead eggs.

M-MATING+POOR <1%WT. Adult blistered, especially head.

Continuously cultured in liquid CeMM for 4 years. For whole-genome sequence-verified wild strains, please request from the Caenorhabditis Natural Diversity Resource (www.caendr.org).

N2 stock which was flown on STS-107, shuttle Columbia. For whole-genome sequence-verified wild strains, please request from the Caenorhabditis Natural Diversity Resource (www.caendr.org).

This strain was grown on CeMM (C. elegans Maintenance Medium) for 3 years (called CC1). It was then flown on STS-107, shuttle Columbia (and now called CC3). For whole-genome sequence-verified wild strains, please request from the Caenorhabditis Natural Diversity Resource (www.caendr.org).

Dominant, gain-of-function mutation in egl-30; missense M244I. This strain cannot be distributed to commercial organizations. This strain cannot be used for any commercial purpose or for work on human subjects.

Gln to Stop mutation in residue 205. This strain cannot be distributed to commercial organizations. This strain cannot be used for any commercial purpose or for work on human subjects.

Gla. May contain dam-1(op241) in background. This strain cannot be distributed to commercial organizations. This strain cannot be used for any commercial purpose or for work on human subjects.

ep369 is a weak allele. ep6 is a deletion allele. This strain cannot be distributed to commercial organizations. This strain cannot be used for any commercial purpose or for work on human subjects.

Resistant to radiation-induced apoptosis (Dam); non-Gla; very weak Rad; no gross phenotype. This strain cannot be distributed to commercial organizations. This strain cannot be used for any commercial purpose or for work on human subjects.

Missense mutation E158K. Worms are Egl-c, Eat, and loopy-Unc. This strain cannot be distributed to commercial organizations. This strain cannot be used for any commercial purpose or for work on human subjects.

epIs14 [sbp-1p::GFP + rol-6(su1006)]. Rollers. sbp-1 previously known as pin-1. This strain cannot be distributed to commercial organizations. This strain cannot be used for any commercial purpose or for work on human subjects.

Heterozygotes are Unc. Segregates DpyUncs. Segregates Uncs which are recessive Mel. This strain cannot be distributed to commercial organizations. This strain cannot be used for any commercial purpose or for work on human subjects.