Search Strains

DpyUnc. ar40 is a semi-dominant suppressor. At 25C ar40 suppresses the Egl phenotype of ne676n930. At 15C a high percentage of hermaphrodites have a 0 AC-Egl phenotype. ar40 suppresses proximal mitosis. ar40 does not suppress vulval lineage defects. Do not distribute this strain; other labs should request it from the CGC.

aSi8 [lox2272::Cbr-unc-119(+)::lox2272::mec-7p:: NLS::GCaMP7s::egl-13-NLS::SL2::NLS::mScarlet-I:: egl-13-NLS] II. mec-7 promoter driving nuclear-localized expression of GCaMP7f in ALM, PLM, AVM & PVM neurons. Reference: Ding J, et al. GE (Bethesda). 2023 Sep 30;13(10):jkad183. doi: 10.1093/g3journal/jkad183. PMID: 37565483.

aSi10 [lox2272 Cbr-unc-119(+) lox2272 + loxP::unc-54 3’UTR::Split 3’ HygR::tjp2a_guide::Split 3’ mScarlet-I::egl-13nls::tbb-2 3’UTR]?II. Strain contains a specialized safe harbor transgene landing pad for integration of promoters to drive mScarlet. Reference: Stevenson ZC, et al. bioRxiv 2022.10.30.514301; doi: https://doi.org/10.1101/2022.10.30.514301. Paper accepted at eLife.

aSi23 [lox2272::Cbr-unc-119(+)::lox2272::mec-7p:: NLS::GCaMP7f::egl-13-NLS::SL2::NLS::mScarlet-I:: egl-13-NLS] II. mec-7 promoter driving nuclear-localized expression of GCaMP7f in ALM, PLM, AVM & PVM neurons. Reference: Ding J, et al. GE (Bethesda). 2023 Sep 30;13(10):jkad183. doi: 10.1093/g3journal/jkad183. PMID: 37565483.

Unc-very slow or paralysed. Egl. Semi-dominant.

Egl. Intragenic revertant.

Egl. Unc. Reference: Yamamoto Y, et al. PLoS Genet. 2011 Oct;7(10):e1002308.

zdIs5 [mec-4p::GFP + lin-15(+)] I. Homozygous nT1[qIs51] are inviable. mec-4::GFP is expressed in touch neurons. Heterozygotes are strong Egl Psa GFP+ and segregate dead eggs and non-GFP Unc Egl Psa that give only dead eggs at 25C.

Egl, Pvul, Psa (Phasmid Socket Absent) and some embryonic lethality. The T cell division can be symmetric as in lin-17 mutants. Less severe at 15C. swsn-4 encodes a homolog of yeast SW12, a component of the SWI/SNF complex.

vpIs1 [elt-3::GFP + lin-15(+)] X. Heterozygotes are WT with pharyngeal GFP signal, and segregate WT GFP, arrested nT1[qIs51] aneuploids, and non-GFP ok546 homozygotes (Unc Egl). Homozygous nT1[qIs51] inviable. Pick WT GFP and check for correct segregation of progeny to maintain. Reference: Yamamoto Y, et al. PLoS Genet. 2011 Oct;7(10):e1002308.

Temperature sensitive. At 22.5C, maternal effect embryonic lethal. Temperature shift-up to 22.5C during embryogenesis results in animals with Egl, Pvul and Psa (phasmid socket absent) phenotypes. Shift-up to 25C results in growth arrest at larval stage. The T cell division can be symmetric as in lin-17 mutants. At 15C, nearly WT. Males grown at 15C can mate very well. psa-1 encodes a homolog of yeast SW13, a component of the SWI/SNF complex. Sequence data of this strain revealed the mutation is actually GTC/CCC/TCA to GTC/CTC/TCA causing a P86L substitution (G. Hayes).

osEx89 [col-10::GFP + dpy-22(+)]. Animals with the array are non-Dpy and GFP+. Animals which have lost the array are Dpy, Egl, and GFP-.

osEx89 [col-10::GFP + dpy-22(+)]. Animals with the array are non-Dpy and GFP+. Animals which have lost the array are Dpy, Egl, and GFP-.

Egg-laying (Egl) defects and subsequent internal hatching of progeny (Bagging) in > 95% of animals. xe11 is a C-to-U point mutation in each of the endogenous let-7 complementary sites, LCS1 and LCS2 [I:C9,335,211T & I:C9,335,260T]. xe11 is a weak gain-of-function allele: mutation of two functionally relevant let-7 binding sites impairs repression by let-7 causing over-expression of LIN-41 in L4 stage animals. Reference: Ecsedi M, et al. Dev Cell. 2015 Feb 9;32(3):335-44. Do not distribute this strain; other labs should request it directly from the CGC. This strain cannot be distributed to commercial organizations. This strain cannot be used for any commercial purpose or for work on human subjects.

Partially penetrant Pvl and Egl. xe40 specifically disrupts the LIN-29A isoform. The GFP tag was inserted at the shared C-terminus of LIN-29A/B in the xe40 background, so only the labeled B isoform is expressed. Do not distribute this strain; other labs should request it directly from the CGC. This strain cannot be distributed to commercial organizations. This strain cannot be used for any commercial purpose or for work on human subjects. Reference: Pereira et al., (2019) Timing mechanism of sexually dimorphic nervous system differentiation. eLIFE 8: e42078. https://doi.org/10.7554/eLife.42078

Pick GFP+ Egl to maintain. Segregates GFP- lin-41(xe8) homozygotes (die by vulval bursting as young adults), lin-41(xe8)/lin-41(bch28[eft-3p::gfp::h2b::tbb-2 3'UTR] xe70) heterozygotes (GFP+ Egl), and lin-41(bch28[eft-3p::gfp::h2b::tbb-2 3'UTR] xe70) (GFP+ Ste Dpy). lin-41(xe8) is a deletion of let-7 binding sites in the lin-41 3'UTR. The balancer was derived from lin-41(bch28), a lin-41(0) allele in which an expression cassette that drives ubiquitous nuclear GFP from the eft-3 promoter has been inserted into the lin-41 coding sequence (Katic et al., G3 (2015) 5:1649-56). References: Katic et al., G3 (2015) 5:1649-56 for lin-41(bch28) starting allele for balancer generation. Aeschimann F, et al. (2019). A single let-7 target to coordinate transition to adulthood. Life Science Alliance 2, e201900335. for balanced line. Do not distribute this strain; other labs should request it directly from the CGC. This strain cannot be distributed to commercial organizations. This strain cannot be used for any commercial purpose or for work on human subjects.

bxIs13 [egl-5::GFP + lin-15(+)]. Him. Unc. Ectopic expression of GFP in head neurons.

bxIs13 [egl-5::GFP + lin-15(+)]. Him. Unc. Ectopic expression of GFP in head neurons.

Reference: Kimata T, et al. Genetics. 2012 Jun;191(2):509-21.

Homozygous nhr-6(lg6001) mutants have defective spermatheca development causing low brood size, abnormally shaped eggs, and occasional Egl. Heterozygotes are WT and segregate WT, semi-sterile WT, and Sterile Dpys.

egl-27(we3) animals have variable body morphology defects with cold sensitive embryonic/L1 lethality (5% die at 22C, 90% at 15C). Maternal effect vab-7(ed6) enhancer; semi-lethal with vab-7(ed6).

Heterozygotes are WT and segregate WT, Hmr inviable embyros and Egl Unc. Hmr: Hammerhead - defective hypodermal enclosure, especially in anterior regions; approximately 2% of zu389 embryos enclose normally and are Hmp [Humpback: defective body elongation, abnormal bulges on dorsal side]. See also WBPaper00005031. Received new stock from Allison Lynch in the Hardin lab 3/2009.

Heterozygotes are WT and segregate WT, Egls which give only dead eggs, dead eggs, and mid-larval lethals (hT1 homozygotes)

Presumptive gain-of-function mutant shows defects in salt-food associative learning and olfactory learning. Reference: Tomioka M, et al. 2006 Sep 7;51(5):613-25. PMID: 16950159

bcIs49 [egl-1p::mitoGFP]. vxIs601 [egl-1p::mCherry::egl-1 3'UTR + unc-122p::GFP]. Transcriptional reporter for apoptotic trigger egl-1. mCherry expression in URX adult neurons through adult stage. Transient mCherry expression in apoptotic cells before death. Reference: Wu Z, et al. Proc Natl Acad Sci U S A. 2025 Jan 14;122(2):e2407909122. doi: 10.1073/pnas.2407909122. PMID: 39786930.

vxIs601 [egl-1p::mCherry::egl-1 3'UTR + unc-122p::GFP]. Transcriptional reporter for apoptotic trigger egl-1. mCherry expression in URX adult neurons and apoptotic cells. Reference: Cohn J, et al. G3 (Bethesda). 2019 Nov 5;9(11):3703-3714. doi: 10.1534/g3.119.400654. PMID: 31519744.

vxEx725 [egl-1p::mCherry::egl-1(G55E, F65D)::egl-1 3'UTR + gcy-32p::GFP::unc-54 3'UTR + unc-122p::GFP]. Pick animals with GFP expression in coelomocytes to maintain. mCherry-tagged EGL-1 visible in URX adult neurons and apoptotic cells. G55E and F65D mutations in the BH3-only region to abolish mCherry::EGL-1 function in inducing cell death. Reference: Wu Z, et al. Proc Natl Acad Sci U S A. 2025 Jan 14;122(2):e2407909122. doi: 10.1073/pnas.2407909122. PMID: 39786930.

Unc. Daf-c at 25C. Egl, Clumpy, Lon, low brood size. Dauers do not recover when moved to 15C in the presence of food. Daf-c, Lon, Clumpy and fertility defects can be rescued maternally. Maintain at 15C.

Responds poorly to dauer pheromone. Low brood size. Egl. Gonadal left/right reversal. Mab.

243 bp internal deletion.

Heterozygotes have jerky movement, are Exp defective, and are Egl (dominant). Homozygous exp-2 are recessive lethal. Homozygous eT1 are lethal also.

sa38 is a weak Egl and a moderate suppressor of lin-12(gf).

sa45 is a weak Egl and a moderate suppressor of lin-12(gf).

Defective in enteric muscle contraction (expulsion) step of defecation motor program and egg-laying (severe bloating-Egl Type A: serotonin and imipramine resistant). Enteric and egg-laying muscle structures are normal. Semi-dominant for Egl defect, but not for constipation defect. n2372/+ : ME3. ES3: adult heterozygotes and homozygotes.

Defective in enteric muscle contraction (expulsion) step of defecation motor program and egg-laying (severe bloating- Egl Type A). Enteric and egg-laying muscle birefringence normal. Semi-dominant: n2373/+ is moderately Egl but not constipated. ME3 : n2373/+. ES3: adult homozygotes. ES2: heterozygotes.

Hid. Con. Egl. Lethargic. Moderately Ric.

Daf-c at 27C. Weakly Egl and Clumpy. Maintain at 15C.

Hid. Egl. Weakly Clumpy.

Males are abnormal. Variable additional defects: Con, Egl, Unc. Temperature sensitive. See also WBPaper00003938.

Males are abnormal. Variable additional defects: Con, Egl, Unc. Temperature sensitive. See also WBPaper00003938.

Daf-c at 25C. Egl, Clumpy, Lon, low brood size. Dauers do not recover when moved to 15C in the presence of food. Daf-c, Lon, Clumpy and fertility defects can be rescued maternally. Maintain at 15C.

mfIs4 [egl-17::YFP + daf-6::CFP + unc-119(+)]. YFP is expressed in the secondary vulval lineage (vulC, D) and CFP in the primary vulval lineage (vulE, F). egl-17::YFP from the pDRS17 plasmid (D. Sherwood and P. Sternberg). daf-6::CFP from the pCK1 plasmid (C. Kolditz and MA Felix). Slightly Egl, Pvl. unc-119(ed3) might still be present in the background.

WT movement. Various degrees of embryonic lethality and Egl. About 1% Roll after L4.

je5 is a dominant suppressor of unc-73(e936). WT movement. Various degrees of embryonic lethality and Egl. About 1% Roller after L4.

je6 is a dominant suppressor of unc-73(e936). WT movement. Various degrees of embryonic lethality and Egl. About 1% Roller after L4.

pyIs500 [ofm-1p::GFP + odr-1p::DsRed + odr-3p::GFP::egl-4]. Reference: O'Halloran DM, et al. PLoS Genet. 2009 Dec;5(12):e1000761. Lee JL et al. Proc Natl Acad Sci USA. 2010 Mar 30;107(13):6016-21.

ok98/+ animals are slightly Egl-d and have a small vulval bump. ok98 homozygotes are straight and paralyzed and slow growing. About 2/3 eventually reach adulthood and are paralyzed and sterile (they produce few if any oocytes). Segregates Unc Muv(ts).

Defective response to short wavelength light; response strongly reduced but not eliminated. All other characteristics seem wild type, including reponse to mechanosensory stimuli. Strong, probably null, allele. This mutation also blocks the coordinated light response of unc-31(e928) and egl-30(ad805). To identify lite-1 homozygous mutants when crossing into different backgrounds, use a fluorescence stereomicroscope with a GFP filter and zoom to the hightest magnification (60-100X) to distinguish Lite from non-Lite animals. This works best when the animals are mired in thicker parts of the food to slow their spontaneous locomotion but not their response to light. Scan animals around the edge of the food where it is thickest. Leave the lid of the plate off for a minute or so before starting to let the animals adjust to air currents.