Search Strains

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.

Small. Recessive. Male spicules abnormal. M-MATING-NO SUCCESS. Synthetic lethal common.

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.

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.

Heterozygotes are Unc and segregate Uncs, dead eggs, and WT (dif-1/dif-1). The WT animals give 100% dead eggs. dif-1 is a maternal effect embryonic lethal gene and e2562 is a putative null allele.

Blistered cuticle. Small. Bursae abnormal. Males abnormal. M-MATING-NO SUCCESS.

WT hermaphrodite if grown at 15-20C. WT females if grown at 25C. When crossed, these females yield only XX viable hermaphrodite progeny, all XO progeny are dead.

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.

Small, blunt rounded nose; heterozygous e2656/+ are animals similar, XO males can mate. Molecularly and phenotypically different from sma-8(e2111).

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.

Resistant to infection by Microbacterium nematophilum (no tail swelling). Slightly small.

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.

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).

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).

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.

Paralyzed Unc. Small.

Resistant to infection by Microbacterium nematophilum (no tail swelling). Small, skiddy movement; slow-growing; frequent vulval rupture; bleach sensitive, hypersensitive to drugs. Abnormal lectin staining.

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

Small, skiddy movement, drug-sensitive, fragile cuticle, Bus (resistant to infection by Microbacterium nematophilum).

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

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

Weak Dpy, Gro, Skd, Daf-d, bleach sensitive. Resistant to infection by M. nematophilum (Bus). <10% larval arrest with rod-like lethality. Severe missense allele (G90E), probable null allele. Reference: Yook & Hodgkin (2007) PMID: 17151260.

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.

Unc-adults paralyzed. Dystrophic body muscle. Suppressed by sup-5 and sup-7. Null allele (?).

nbEx146 [glf-1p::glf-1(+) + sur-5p::GFP]. Pick GFP+ animals to maintain. Array rescues glf-1(null) mutant. Reference: Novelli et al. (2009) PMID: 19751718.

Maintain at 15C. Small, sluggish, slow-growing fragile hermaphrodites. Almost inviable above 20C. Reference: Novelli et al. (2009) PMID: 19751718.

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).

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).

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).

Him. Small, slow-growing, bleach-sensitive; Bus (resistant to M. nematophilum), slightly resistant to Leucobacter Verde2, hypersensitive to Leucobacter Verde1. Reference: Hodgkin 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.)

eEx730 [ptr-15(+) + sur-5p::GFP]. Pick GFP+ to maintain. Lon. Non-GFP animals will mostly be dead eggs and dead hatchlings, but can segregate rare GFP-negative viable ptr-15 lon-3 homozygotes (which are fertile but grow very poorly). Reference: Kuwabara et al. (in prep.)

Very slow-growing, grows best at 25C. Small, bleach-sensitive, Bus, resistant to Leucobacter Verde1. Reference: O'Rourke et al (in preparation).

Q288Stop(UAA). Reference null. Surface abnormal, resistant to M. nematophilum and Leucobacter Verde2, killed by Leucobacter Verde1. References: Darby C, et al. Genetics. 2007 May;176(1):221-30. doi: 10.1534/genetics.106.067496. Epub 2007 Mar 4. PMID: 17339204. O’Rourke D, et al. G3 (Bethesda). 2023 May 2;13(5):jkad056. doi: 10.1093/g3journal/jkad056. PMID: 36911920.

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.

W242StopUAG. Reference null. Surface abnormal, bleach and drug sensitive; resistant to Leucobacter Verde1.

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).

Recessive, paralysed, kinky, thin at all stages, able to lay eggs.

M-MATING-NO SUCCESS. UNC-Severe coiler at all stages-small and thin. SCORED EASILY. Suppressed by sup-1, sup-2, and snb-1. Resistant to lannate. See also CGC 1770.

Unc-weak coiler, especially in reverse; moves forward well; sluggish; short.

cerIs7 [lsm-1::GFP(fosmid) + unc-119(+)]. cerIs7 rescues all the temperature-sensitive phenotypes of lsm-1(tm3585). Reporter contains full-length lsm-1 tagged with GFP. GFP was inserted into a fosmid containing lsm-1. GFP is expressed diffusely in the cytoplasm of somatic cells. Under heat shock conditions, GFP accumulates forming cytoplasmic foci. Reference: Cornes E, et al. RNA. 2015 Sep;21(9):1544-53.

Reduced brood size. Genetic interaction with rpn-9. cer27 is a 1033 bp deletion removing the start codon and nearly all of the ubh-4 coding sequence. Reference: Martinez-Fernandez C, et al. Cells. 2023 Mar 18;12(6):929. doi: 10.3390/cells12060929. PMID: 36980270

cerIs2 [lsm-4p::lsm-4::GFP::lsm-4 3'UTR + unc-119(+)]. Reporter contains full-length lsm-4 tagged with GFP. GFP was inserted into a fosmid containing lsm-4. Ubiquitous nuclear GFP expression in somatic and germ cells under normal growth conditions. Cytoplasmic GFP accumulation after exposure to heat-shock. Reference: Cornes E, et al. RNA. 2015 Sep;21(9):1544-53.