Search Strains

ltIs37 [pie-1p::mCherry::his-58 + unc-119(+)] IV. ojIs1 [pie-1p::GFP::tbb-2 + unc-119(+)]. Maintain at 15C; sterile at 26C. Shift to restrictive temperature (26C) for 3-6 hours to induce oocyte meiotic spindle phenotype and bypass sterility. [NOTE: the ltIs37 [pie-1p::mCherry::his-58 + unc-119(+)] IV transgene was previously annotated as itIs37 in this strain. The correct name of the transgene is ltIs37 and not itIs37.] Reference: Connolly A, et. al. Mol Biol Cell. 2014 Apr;25(8):1298-311.

ruIs32 [pie-1p::GFP::H2B + unc-119(+)] III. Embryonic lethal at 26C. Maintain at 15C. Temperature-sensitive embryonic lethal following L4 upshift; germline defective following L1 upshift. Reference: Lowry J, et al. G3 (Bethesda). 2015 Aug 26;5(11):2241-55.

ltIs37 [pie-1p::mCherry::his-58 + unc-119(+)] IV. ojIs1 [pie-1p::GFP::tbb-2 + unc-119(+)]. Temperature-sensitive embryonic lethal. Maintain at 15C. Shift to 25-26C for 2-6 hours to induce meiotic spindle phenotype. [NOTE: the ltIs37 [pie-1p::mCherry::his-58 + unc-119(+)] IV transgene was previously annotated as itIs37 in this strain. The correct name of the transgene is ltIs37 and not itIs37.] Reference: Connolly AA, et al. J Cell Biol. 2015 Sep 14;210(6):917-32. PMID: 26370499

ruIs32 [pie-1p::GFP::H2B + unc-119(+)] III. Temperature-sensitive. Viable at 15C. Complete loss of klp-18 function at 26C. Shift to restrictive temperature for 3-6 hours to induce oocyte meiotic spindle phenotype and bypass sterility. Reference: Connolly A, et al. Molecular Biology of Cell 2014. (In Press)

ltIs37 [pie-1p::mCherry::his-58 + unc-119(+)] IV. orEx25 [GFP::aspm-1]. [NOTE: the ltIs37 [pie-1p::mCherry::his-58 + unc-119(+)] IV transgene was previously annotated as itIs37 in this strain. The correct name of the transgene is ltIs37 and not itIs37.]

itIs153 [pie-1p::par-2::GFP + rol-6(su1006) + N2 genomic DNA]. ojIs1 [pie-1p::GFP::tbb-2 + unc-119(+)]. Maintain at 15C. Temperature-sensitive embryonic-lethal at restrictive temperature of 26C; viable at permissive temperature of 15C. Reversed AP polarity axis at restrictive temperature with par-2::GFP and tubulin::GFP expression. itIs153 is an integrated derivitive of axEx1094. Reference: Keikhaee MR, et al. PLoS One. 2014 Sep 4;9(9):e106484.

ltIs37 [pie-1p::mCherry::his-58 + unc-119(+)] IV. orIs1 [pie-1p::GFP::mei-1 + unc-119(+)]. Maintain at 25C to retain transgene fluorescence. [NOTE: the ltIs37 [pie-1p::mCherry::his-58 + unc-119(+)] IV transgene was previously annotated as itIs37 in this strain. The correct name of the transgene is ltIs37 and not itIs37.] Reference: Connolly AA, et al. J Cell Biol. 2015 Sep 14;210(6):917-32. PMID: 26370499

ltIs37 [pie-1p::mCherry::his-58 + unc-119(+)] IV. GFP::aspm-1 localizes to meiotic spindle poles and centrosomes during early development. [NOTE: the ltIs37 [pie-1p::mCherry::his-58 + unc-119(+)] IV transgene was previously annotated as itIs37 in this strain. The correct name of the transgene is ltIs37 and not itIs37.] Reference: Connolly AA, et al. J Cell Biol. 2015 Sep 14;210(6):917-32. PMID: 26370499

ruIs32 [pie-1p::GFP::H2B + unc-119(+)] III. ojIs1 [pie-1p::GFP::tbb-2 + unc-119(+)]. orIs21 [pie-1p::GFP::PH]. Embryonic lethal at 26C. Maintain at 15C. Temperature-sensitive embryonic lethal following L4 upshift; germline defective following L1 upshift. Reference: Lowry J, et al. G3 (Bethesda). 2015 Aug 26;5(11):2241-55.

Endogenous drp-1 locus tagged with GFP using CRISPR/Cas9. Reference: Lowry J, et al. G3 (Bethesda). 2015 Aug 26;5(11):2241-55.

itIs37 [pie-1p::mCherry::H2B::pie-1 3'UTR + unc-119(+)] IV. GFP::aspm-1 localizes to meiotic spindle poles and centrosomes during early development. Temperature-sensitive embryonic lethal. Maintain at 15C. Shift to 25-26C for 2-6 hours to induce meiotic spindle phenotype. Reference: Connolly AA, et al. J Cell Biol. 2015 Sep 14;210(6):917-32. PMID: 26370499

ojIs1 [pie-1p::GFP::tbb-2 + unc-119(+)] IV. Maintain at 15C. Embryonic lethal at 26C. Temperature-sensitive embryonic lethal following L4 upshift; germline defective following L1 upshift. Reference: Lowry J, et al. G3 (Bethesda). 2015 Aug 26;5(11):2241-55.

sas-7(or1940[gfp::sas-7]) III. ltIs37 [pie-1p::mCherry::his-58 + unc-119(+)] IV. Green centriole signal and red chromosome signal. [NOTE: the ltIs37 [pie-1p::mCherry::his-58 + unc-119(+)] IV transgene was previously annotated as itIs37 in this strain. The correct name of the transgene is ltIs37 and not itIs37.] Reference: Sugioka, et al., 2017 Elife 6 e20353.

qIs26 [lag-2::GFP + rol-6(su1006)]. or1948 is a CRISPR/Cas9 engineered mutation in cls-1 causing a frameshift and premature stop. Heterozygotes are Rollers and GFP+ in the distal tip cell, and segregate heterozygotes (WT Rol), lethal qC1 homozygotes, and or1948 homozygotes (lay 100% dead embryos). Pick WT GFP+ Rol and check for correct segregation of progeny to maintain. Reference: Schlientz AJ & Bowerman B. (2020) C. elegans CLASP/CLS-2 negatively regulates membrane ingression throughout the oocyte cortex and is required for polar body extrusion. BioRxiv.

qIs26 [lag-2::GFP + rol-6(su1006)]. or1951 is a CRISPR/Cas9 engineered mutation in cls-1 causing a frameshift and premature stop. Heterozygotes are Rollers and GFP+ in the distal tip cell, and segregate heterozygotes (WT Rol), lethal qC1 homozygotes, and or1951 homozygotes (lay 100% dead embryos). Pick WT GFP+ Rol and check for correct segregation of progeny to maintain. Reference: Schlientz AJ & Bowerman B. (2020) C. elegans CLASP/CLS-2 negatively regulates membrane ingression throughout the oocyte cortex and is required for polar body extrusion. BioRxiv.

ijmSi3 [mex-5p::cls-2(re-encoded)::GFP::tbb-2 3'UTR + Cbr-unc-119(+)] I. ltIs37 [pie-1p::mCherry::his-58 + unc-119(+)] IV. The coding sequence of GFP-tagged cls-2 in the transgene was re-coded using silent mutations to render it insensitive to RNAi-depletion of endogenous cls-2 expression. mCherry expression marks histones. Not known if unc-119(ed3) is still carried in the background of this strain. [NOTE: the ltIs37 [pie-1p::mCherry::his-58 + unc-119(+)] IV transgene was previously annotated as itIs37 in this strain. The correct name of the transgene is ltIs37 and not itIs37.] Reference: Schlientz A and Bowerman B. PLoS Genet. 2020 Oct 7;16(10):e1008751. doi: 10.1371/journal.pgen.1008751.

ItIs37 [pie-1p::mCherry::his-58 + unc-119(+)] IV. Maintain at 15C. Fast-acting temperature-sensitive allele. At restrictive temperature (26C), animals give rise to 100% dead embryos. At 15C, animals give rise to viable progeny. GFP::aspm-1 localizes to meiotic spindle poles and centrosomes during early development. Might still carry unc-119(ed3) III in background. Reference: Harvey AM, et al. PLoS Genet. 2023 Jan 6;19(1):e1010363. doi: 10.1371/journal.pgen.1010363. PMID: 36608115

Heterozygotes are Unc and segregate Unc, WT which give only dead eggs, and dead eggs. Maintain by picking Unc.

ltIs37 [pie-1p::mCherry::his-58 + unc-119(+)] IV. ruIs57 [pie-1p::GFP::tubulin + unc-119(+)]. tmC18 balancer marked with myo-2p::mCherry and Dpy. Heterozygotes are wild-type with pharyngeal mCherry, and segregate mCherry+ heterozygotes, tmC18 homozygotes (mCherry+ Dpy) and non-mCherry klp-15/16 homozygotes. Homozygous double deletion mutants are fertile but produced reduced brood sizes with highly penetrant embryonic lethality; will also segregate some males. [NOTE: the ltIs37 [pie-1p::mCherry::his-58 + unc-119(+)] IV transgene was previously annotated as itIs37 in this strain. The correct name of the transgene is ltIs37 and not itIs37.] Reference: Chuang CH, et al., Biology Open 2020 9: bio052308 doi: 10.1242/bio.052308 Published 25 June 2020

ltIs37 [pie-1p::mCherry::his-58 + unc-119(+)] IV. GFP tag inserted into endogenous tac-1 locus. Might still contain unc-119(ed3) in the background. [NOTE: the ltIs37 [pie-1p::mCherry::his-58 + unc-119(+)] IV transgene was previously annotated as itIs37 in this strain. The correct name of the transgene is ltIs37 and not itIs37.] Reference: Chuang CH, et al., Biology Open 2020 9: bio052308 doi: 10.1242/bio.052308 Published 25 June 2020

ltIs37 [pie-1p::mCherry::his-58 + unc-119(+)] IV. GFP tag inserted into endogenous zyg-9 locus. Might still contain unc-119(ed3) in the background. [NOTE: the ltIs37 [pie-1p::mCherry::his-58 + unc-119(+)] IV transgene was previously annotated as itIs37 in this strain. The correct name of the transgene is ltIs37 and not itIs37.] Reference: Chuang CH, et al., Biology Open 2020 9: bio052308 doi: 10.1242/bio.052308 Published 25 June 2020

ltIs37 [pie-1p::mCherry::his-58 + unc-119(+)] IV. ruIs57 [pie-1p::GFP::tubulin + unc-119(+)]. GFP tag inserted into endogenous aspm-1 locus. tmC18 balancer marked with myo-2p::mCherry and Dpy. Heterozygotes are wild-type with pharyngeal mCherry, and segregate mCherry+ heterozygotes, tmC18 homozygotes (mCherry+ Dpy) and non-mCherry triple mutant homozygotes. Homozygous triple mutants are fertile but produced reduced brood sizes with highly penetrant embryonic lethality; will also segregate some males. [NOTE: the ltIs37 [pie-1p::mCherry::his-58 + unc-119(+)] IV transgene was previously annotated as itIs37 in this strain. The correct name of the transgene is ltIs37 and not itIs37.] Reference: Chuang CH, et al., Biology Open 2020 9: bio052308 doi: 10.1242/bio.052308 Published 25 June 2020

Temperature-sensitive embryonic lethal. Maintain at 15C with 20% to 50% hatching rate. 100% lethality and mono-polar spindle at 26C. Reference: O'Rourke SM, et al. PLoS One. 2011 Mar 1;6(3):e16644.

Heterozygotes are Unc and segregate Unc, WT which give only dead eggs, and dead eggs. Maintain by picking Unc.

Heterozygous. Pick Unc to maintain. Heterozygotes are Unc and segregate Unc heterozygotes, wildtype (or2015 homozygotes that give only dead progeny), and and arrested nT1 aneuploids. Pick Unc and check for correct segregation of progeny to maintain. or2015 is a CRISPR/Cas9-engineered null allele removing the entire apx-1 open reading frame. Reference: Chuang CH, et al. G3 (Bethesda). 2025 Sep 26:jkaf229. doi: 10.1093/g3journal/jkaf229. PMID: 41004705.

Heterozygotes are Unc.

mom-2(or85) is a recessive, non-conditional maternal-effect embryonic lethal. Strong allele; missense mutation near N-terminus: L77P. 85% of mutant embryos lack gut. Heterozygotes are Unc. [NOTE: (08-27-2014) We have been informed that the mutation carried in this strain is the same molecular lesion as or77. We are working to determine if or85 and or77 are in fact the same lesion or if an incorrect genotype was provided for the strain.]

Maintain at 15C. Animals are Unc.

Heterozygotes are Unc and lay 10/16 dead embryos. spn-4 homozygotes look WT but are non-conditional maternal effect embryonic lethals. Embryos from homozygous mothers exhibit defects in mitotic spindle orientation and cell fate patterning.

Heterozygotes are WT and segregate WT, Dpys and dead eggs. Dpys segregate only embryonic lethals which lack endoderm and make excess mesoderm with E adopting and MS-like fate. or42 is a recessive maternal-effect lethal.

Heterozygotes are Unc and segregate Unc, WT which give only dead eggs, and dead eggs. Maintain by picking Unc.

Heterozygotes are Unc and segregate Unc, WT which give only dead eggs, and dead eggs. Maintain by picking Unc.

Heterozygotes are WT and segregate WT, Sterile Dpys and Uncs which give only dead eggs at all temperatures. Throws males.

mom-2(or33) is a recessive, non-conditional maternal-effect embryonic lethal. Intermediate strength allele; missense mutation near C-terminus: C321Y. 50% of mutant embryos lack gut. Heterozygotes are Unc.

Heterozygotes are WT. Segregates Uncs which give only embryonic lethals which lack gut and make excess mesoderm (E adopts an MS-like fate). or39 is a recessive maternal-effect embryonic lethal. Throws males.

Heterozygotes are WT and segregate WT and Uncs. The Uncs have a non-conditional maternal-effect embryonic lethal phenotype: the E blastomere adopts MS fate in about 5% of mutant embryos. The Uncs are 100% penetrant for embyronic lethality and morphogenesis defects.

Temperature sensitive. Maintain at 15C.

Temperature sensitive. Maintain at 15C.

Temperature sensitive. Grow at permissive temperature of 15C. Fully penetrant cytokinesis defect at the restrictive temperature of 25C.

Temperature sensitive. Viable at 15C; lethal at 25C. At 25C, embryos exhibit defects in spindle orientation and cell fate patterning. Throws males.

Temperature sensitive. Grow at permissive temperature of 15C. Fully penetrant cytokinesis defect at the restrictive temperature of 25C. Semi-dominant Dpy.

Temperature sensitive. Grow at permissive temperature of 15C. Fully penetrant cytokinesis defect at the restrictive temperature of 25C. Semi-dominant Unc.

or131 mutant embyros have a highly penetrant mom-like defect with mutant embryos lacking gut and making extra pharyngeal tissue at 25C. Maintain at 15C.

Temperature sensitive. Maintain at 15C.

Temperature-sensitive, embryonic-lethal mutant that lacks a central spindle during early embryonic mitosis and exhibits a late cytokinesis defect (cleavage furrows regress after ingressing in nearly to the center of dividing embryonic cells). About 100% of embryos produced by homozygous mothers hatch at 15C; 0% hatch at 26C. ZEN-4 = vertebrate MKLP1 kinesin. There are two mis-sense mutations present in zen-4(or153). One is a D520N (GAC to AAC) and the other is D735N (GAT to AAT). Whether one or both is responsible for the phenotype is not know. Maintain at 15C. Shift L4s to 26 overnight to observe mutant phenotype on embyros produced by adults.

Temperature sensitive. Maintain at 15C. CGC received new stock 2/2002.

Heterozygotes are WT and lay 10/16 dead eggs. spn-4 unc-42 homozygotes are Unc and lay dead embryos exhibiting defects in mitotic spindle orientation and cell fate patterning. spn-4(or25) homozygotes are non-conditional maternal effect embryonic lethal.

Heterozygotes are Unc and lay 10/16 dead embryos. spn-4 homozygotes look WT but are non-conditional maternal effect embryonic lethals. Embryos from homozygous mothers exhibit defects in mitotic spindle orientation and cell fate patterning.

Him. Temperature-sensitive embryonic lethal. Maintain at 15C. Reference: O'Rourke SM, et al. PLoS One. 2011 Mar 1;6(3):e16644.