Search Strains

vxSi808 [rab-3p::APP::mCherry::unc-54 3'UTR] X. vxIs591 [tph-1p::GFP::unc-54 3'UTR]. Single-copy insertion of human APP transgene tagged with mCherry expressed throughout the nervous system, visible along ventral nerve cord, head, tail, and other neurons. GFP expression in all serotonergic neurons. References: Yi B, et al. 2017 J Neurochem 140(4): 561-575. PMID: 27926996. Mondal et al. 2018 ACS Chem Neurosci. DOI: 10.1021/acschemneuro.7b00428 PMID: 29426225

Long defecation cycle period. Slightly slow growing and scrawny.

Long defecation cycle period. Slightly slow growing and scrawny.

Constipated. Long defecation cycle in mid to late adults.

Long defecation cycle period. Slightly slow growing and scrawny. Reduced brood size, especially at 25C. See also WBPaper00003693; previously called dec-4(sa73).

Long defecation cycle period. Slightly slow growing and scrawny.

Male-female strain. Isolated on May 6, 2005 under a tree along a path between two villages in Changyang, 20 km north of Sanjiang, Guangxi, China. Does not cross with C. remanei PB4641 or JU724, nor with C. sp. PB2801. sp. 5 in Kiontke and Sudhaus Wormbook Ecology chapter.

Male-female strain. Inbred derivative of JU727. Derived from JU727 by 20 generations of sib mating. Male/female strain. Isolated on May 6, 2005 under a tree along a path between two villages in Changyang, 20 km north of Sanjiang, Guangxi, China. Does not cross with C. remanei PB4641 or JU724, nor with C. sp. PB2801. sp. 5 in Kiontke and Sudhaus Wormbook Ecology chapter.

seaSi182 [(pCFJ150) (vha-6p::fmo-2 + H2B::GFP) + Cbr-unc-119(+)] II. Over-expression of FMO-2 in the intestine. Long-lived. Reference: Leiser SF, et al. Science 350.6266 (2015): 1375-8.

Lox P sites in 3' UTR and 4th intron flank kinesin motor domain sequences; sup-1(e995) mini-gene inserted in second intron. Appears wild-type on plates and in quantitative locomotion assays. Can be used to conditionally delete gene sequences encoding the conventional kinesin motor domain in a tissue specific manner by driving expression of Cre recombinase in the tissue of interest. Reference: Stec N, et al. (Submitted). An Intron Compatible Marker for Long Distance CRISPR Mediated Gene Editing in Caenorhabditis elegans.

The Auxin Inducible Degron (AID*) flanked by a 5X Myc/spacer tag on left and a single spacer on the right is fused to the N-terminus of the unc-104 gene. Allows conditional degradation of UNC-104 protein when combined with tissue specific expression of TIR1 in the presence of 1 mM Auxin in plate media. Note: KG5148 does not express TIR1. On standard plates: wild type growth, appearance, and locomotion rate. For animals expressing a TIR1 transgene in the nervous system: Animals that hatch and develop on 1 mM Auxin plates generally remain tightly coiled near the location of hatching and exhibit slow growth (up to 7 days to reach adulthood, with 98% reaching adulthood by 7 days). Adults placed on Auxin abruptly lose about 75% of their locomotion function between 6 and 12 hours after plating. The remaining locomotion function is lost gradually between 12 and 52 hours. Reference: Stec N, et al. (Submitted). An Intron Compatible Marker for Long Distance CRISPR Mediated Gene Editing in Caenorhabditis elegans.

Long body size.

Long body size.

Wild-type to mildly long phenotype, sometimes a bit Unc. Segregates wild-type, Dpy-18 (hT2[dpy-18 bli-4] homozygotes), hDf10 dpy-5 unc-29 homozygotes (probably dead eggs) and large numbers of aneuploids (dead eggs). dpy-18(h662) completely suppresses bli-4(e937), is only very mildly Dpy, and has a distinctive dark body and large clear vulval region as a young adult, before becoming gravid. Do not passage: hT2 homozygotes seem somewhat healthier than the het, and will overgrow the plate. Pick longish wild-types and check for correct segregation of progeny to maintain. This strain was generated by the Genetic Toolkit project, which should be acknowledged in any publications resulting from its use: The Genetic Toolkit is funded by the NIH National Center for Research Resources (NCRR) (USA) to Ann M. Rose, David L. Baillie, and Donald L. Riddle. Report all experimental results to Ann Rose.

geIs10 [ges-1p(long)::skn-1c::GFP + rol-6(su1006)]. Reference: Nature (2007) 447(7144):545-9.

geIs10 [ges-1p(long)::skn-1c::GFP + rol-6(su1006)]. Rollers. Heterozygotes are rollers with pharyngeal GFP signal, and segregate GFP+ rollers, arrested nT1[qIs51] aneuploids, and non-GFP skn-1 homozygotes (early arrest). Homozygous nT1[qIs51] inviable. Pick GFP+ rollers and check for correct segregation of progeny to maintain. skn-1 mutants are maternal-effect lethal and must be maintained as balanced heterozygotes. Reference: Bishop & Guarente, Nature (2007) 447(7144):545-9.

vsIs100 [myo-3p::CFP + lin-15(+)]. CFP expression in VMs. Additional background expression seen as punctate nucleolar fluorescence along the ventral side of the worm (also present in wild-type).

vsIs13 [lin-11::pes-10::GFP + lin-15(+)]. GFP expression in six VC neurons and posterior intestine. vsIs97 [tph-1p::DsRed2 + lin-15(+)]. DsRed2 expression in HSN, NSM, and associated processes. Additional background expression in tail and a pair of head neurons. NOTE: tph-1p::DsRed2 expression pattern is different than GFP expression driven by the same promoter [Koelle Lab]. vsIs100 [myo-3p::CFP + lin-15(+)]. CFP expression in VMs. Additional background expression seen as punctate nucleolar fluorescence along the ventral side of the worm (also present in wild-type).

Long.

risIs31 [hsp-16.2p::grh-1b::GFP + unc-119(+)]. Long lived without heat shock. Heat shock induces over-expression of grh-1 causing short-lived phenotype and nuclear GFP expression. Described as "hsp-16.2p::grh-1::gfp OEx line 1" in referenced paper. Reference: Grigolon G, et al. Nat Commun. 2022 Jan 10;13(1):107. doi: 10.1038/s41467-021-27732-4. PMID: 35013237.

Egg laying defective. Retains late stage eggs. Slow and Floppy; Long.

Slightly Unc. Long irregularly shaped tail. May be Egl. Many hermaphrodites (50%) have single small protrusion posterior to vulva, some gonadal abnormality and sterility.

Long. Egl.

Long. n821 pka sup-20(n821).

Long. Muv.

Long. Can split in two.

Long.

Unc. Long.

ced-6(n1813): dead cells persist, maternal rescue of embryonic. Unc. Long.

ced-10(n1993): cell corpses unengulfed. Long.

Roller. Long. Unc. XO Lethal. sc8 previously called rol-4(sc8).

Long lifespan and healthspan. mig-22(k185) is a gain-of-function allele that increase endogenous chondroitin and suppress the gonad migration defect of mig-17(k174). Reference: Shibata Y, et al. Sci Rep. 2024 Feb 27;14(1):4813. doi: 10.1038/s41598-024-55417-7. PMID: 38413743.

Excretory canal defect. Large fluid-filled cysts appear randomly along the excretory canal, especially at the tips: 100% penetrant. Cysts often visible as clear spots by low-power microscopy. Shortened canals. Smaller cysts in amphid sheath. Stop mutation in 2nd Ras-like IRGP domain. Encodes homologue of human IRGC. [NOTE (08/2025): The correct genotype of this strain is exc-1(rh26), not exc-3(rh26) as previously described.]

Heterozygotes are WT and segregate WT, Unc and Long Thin Steriles (that arrest before the adult stage). cul-1 animals have excess cell divisions in post-L1 blast cell lineages. cul-1 was formerly known as lin-19.

Excretory canal defect. Canal is invariably short with multiple cysts of varying size clustered along length, especially at the tips. Visible only by Nomarski microscopy. Tail spike is often slightly malformed. Animal is somewhat pale.

Superficially wild-type. Specifically tags the long isoform of mig-6. CRISPR/Cas9 insertion of mNeonGreen. Insertion site verified by PCR and sequencing.

Caenorhabditis inopinata wild isolate; 10x inbred line. Male-Female. Maintain by mating at 25C or above; does not grow well at 20C. See reference for the details d(https://www.nature.com/articles/s41467-018-05712-5). Sibling species of C. elegans. Inbred 10 times, full genome sequence available. Frozen stock recovery is lower efficiency than C. elegans with glycerol; DMSO method works more efficiently. Adult: Large and slender species; ca. 1.5–2.5?mm in length, and individuals may reach up 3.0?mm under optimal culturing conditions. Cuticle is moderate to thick with four-lined lateral field. Deirids on the lateral field, at the level slightly behind the secretory–excretory pore. Lip separated into six sectors, not clearly offset. Six labial sensilla and four cephalic sensilla present. The anterior end of each lip sector very slightly elongated and forming six stomatal flaps. Amphid small, oval pore-like, at the level of the margin of cheilo and gymnostom. Tube-like stoma separated into three parts; short tube-like cheilostom; simple tube-like gymnostom, which is weakly separated into two subsections; and tube-like stegostom covered by pharyngeal sleeve, which is separated into four subsections, prostegostom, mesostegostom, metastegostom, and telostegostom. Metastegostomatal three teeth flap-like. Pharynx separated into four sections; procorpus forming muscular tube, well-developed metacorpus (median bulb); glandular and narrow isthmus; and basal bulb with double haustrulum as the glottoid apparatus. Pharyngo-intestinal valve (cardia) prominent. Nerve ring around the middle of isthmus. Excretory pore located around the margin of isthmus and basal bulb. Female: Gonadal system didelphic, amphidelphic. Anterior and posterior gonadal system are basically symmetric with each other, arranged as ovary, oviduct, spermatheca, spermathecal-uterus junction tissue, uterus and vulva/vagina from distal. Sometimes more than 20 developing eggs are deposited. Tail conical or forming slightly elongated conus with pointed tip. Anus and rectum clearly visible; three (two subventral and one dorsal) rectal glands present. Phasmid forming small pore at ca. 60% of total tail length from anus. Male: Testis single, anteriorly reflexed rightwardly. Vas deferens occupying ca. 1/5 of total gonadal length. Tail enveloped by a closed bursa, supported by nine pairs of bursal rays. Anterior cloacal lip with a rounded and sclerotized appendage and bulge-like appendage between rounded appendage and cloacal opening; a small sensilla-like papilla on the bulge-like appendage. Posterior cloacal lip with tongue-like appendage with two cloacal sensilla. Spicules paired, separate, long and slender with evenly slightly ventrally curved blade and simply pointed tip. Gubernaculum slender, ventrally arcuate with small squared appendage at the distal end in lateral view. Bursa heart-shaped in ventral view, anteriorly closed with serrated edge; serratae obvious in anterior half and vague in posterior half; terminal notch present but unclear. The nine pairs of genital papillae or bursal rays supporting the bursal velum with an arranged (2/1?+?1?+?2?+?3).

Reduced fertility. Reduced long-term survival. Mutator phenotype. DNA damage-induced apoptosis in the germ line. No effect on lifespan or meiotic chromosome disjunction observed.

drSi2 [vha-6p::3XFLAG::pgp-3/CFTR(wt)::mCherry::unc-54 3'UTR] II. Superficially wild-type with mCherry expression only in the intestine with enrichment at the apical membrane. Single copy integration of the vha-6 promoter driving the PGP-3 protein with an N-terminal 3XFLAG tag and a C-terminal mCherry tag. Amino acids 476-484 of PGP-3 have been replaced with amino acids 501-509 of human CFTR (TIKENIIFG). Transgene was inserted at the ttTi5605 locus on LGII and verified to be a single copy insertion by long range PCR across the genomic locus. Reference: He L, et al. Dis Model Mech. 2012 Nov;5(6):930-9.

drSi4 [vha-6p::3XFLAG::pgp-3/CFTR(delta F508)::mCherry::unc-54 3'UTR] II. Superficially wild-type with mCherry expression only in the intestine with significantly diminished expression as compared to drSi2. Single copy integration of the vha-6 promoter driving the PGP-3 protein with an N-terminal 3XFLAG tag and a C-terminal mCherry tag. Amino acids 476-484 of PGP-3 have been replaced with amino acids 501-509 of human CFTR with F508 deleted (TIKENII_G). Transgene was inserted at the ttTi5605 locus on LGII and verified to be a single copy insertion by long range PCR across the genomic locus. Reference: He L, et al. Dis Model Mech. 2012 Nov;5(6):930-9.

otEx621 [(pAIY-MCS) ttx-3(cDNA) + unc-47(long)::GFP]. Maintain by picking GFP+.

otIs76 [pttx-3p::kal-1 + unc-122p::GFP] IV. mgIs18 [ttx-3p::GFP] IV. Long, otherwise phenotypically WT. ttx-3p::GFP labels AIY interneurons. hst-6(ot17) suppresses the branching phenotype of KAL-1 overexpression in AIY. hst-6(ot17) is closely linked to lon-2.

otEx1076 [unc-47p(long)::lin-23cDNA(yk784a08) + rol-6(su1006) + pBS]. oxIs12 [unc-47p::GFP + lin-15(+)]. Maintain by picking Rollers.

oyIs14 [sra-6::GFP + lin-15(+)]. otEx3126 [dpy-7p::sax-7cDNA long + rol-6(su1006)]. Pick Rollers to maintain. Reference: Pocock R, et al., Mol Cell Neurosci. 2008 Jan;37(1):56-68.

oyIs14 [sra-6::GFP + lin-15(+)]. otEx3140 [unc-14p::sax-7cDNA long-delta11 + rol-6(su1006)]. Pick Rollers to maintain. Reference: Pocock R, et al., Mol Cell Neurosci. 2008 Jan;37(1):56-68.

oyIs14 [sra-6::GFP + lin-15(+)]. otEx3141 [unc-14p::sax-7cDNA long-delta11 + rol-6(su1006)]. Pick Rollers to maintain. Reference: Pocock R, et al., Mol Cell Neurosci. 2008 Jan;37(1):56-68.

oyIs14 [sra-6::GFP + lin-15(+)]. otEx3139 [unc-14p::sax-7cDNA long + rol-6(su1006)]. Pick Rollers to maintain. Reference: Pocock R, et al., Mol Cell Neurosci. 2008 Jan;37(1):56-68.

Bacteria. RNAi-compatible OP50 strain. Slow growing. When growing this strain, pick single colonies for liquid culture (at least 20 hrs) from a freshly streaked tetracycline LB plate. Do not include tetracycline in liquid culture, as Tet in liquid culture can have long lasting effects on worm lifespan. The authors recommend using standard PEG transformation method to make competent OP50(xu363) cells, but other ways to make competent cells will also likely work for OP50(xu363). Reference: Xiao R, et al. Cell Rep. 2015 May 19;11(7):1123-33.

dvIs62 [snb-1p::hTDP-43/3' long UTR + mtl-2p::GFP] X. Temperature-sensitive. Maintain at 16C to minimize selection against transgene. [NOTE: Out-crossing has eliminated embryonic lethality seen in parental strain CL6049 when raised at 25C.] Uncoordinated from hatching; phenotype is stronger at higher temperatures. Intestinal GFP expression. Parental strain CL6049 out-crossed 6x to N2. Reference: Koopman M, et al. MicroPubl Biol. 2023 Apr 19:2023:10.17912/micropub.biology.000766. doi: 10.17912/micropub.biology.000766. eCollection 2023. PMID: 37151213.

Maintain at 20C or cooler. qIs26 [lag-2::GFP + rol-6(su1006)]. set-2 mutation balanced by glp-1- and dpy-19-marked recombination suppressor. qIs26 was integrated into qC1 and in the process made qC1 homozygous lethal. Heterozygotes are Rollers and GFP+ in the distal tip cell, and segregate WT Rol, lethal qC1 homozygotes, and set-2(syb2085) homozygotes (Mrt phenotype at 25C -- viable but homozygotes will become sterile in successive generations). Pick WT GFP+ Rol and check for correct segregation of progeny to maintain. set-2(syb2085) mutant animals that express a catalytically inactive form of SET-2, the C. elegans SET1 homolog. set-2(syb2085) homozygotes are not long-lived on OP50. Reference: Caron M, et al. Life Sci Alliance. Dec 2021, 5 (3) e202101140; DOI: 10.26508/lsa.202101140. PMID: 34893559.