Search Strains

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.

ruIs57 [pie-1p::GFP::tubulin + unc-119(+)]. Superficially wild-type. mKate2 was inserted into the C-terminus of ebp-2 endogenous locus. Reference: Sugioka K, et al. (2018) PNAS, Jan 30;115(5): E954-E963. (PubMed ID: 29348204)

Heterozygotes are WT and segregate WT, Lon males, lots of dead eggs, and Dpys. The Dpys should give all dead embryos at all temperatures. Approximately 60% of these dead embryos make excess mesoderm at the expense of endoderm, due to an E to MS fate transformation. Embryonic lethality is 100% penetrant for or46.

Heterozygotes are WT and segregate WT, Lon males, lots of dead eggs, and Dpys. The Dpys should give all dead embryos at all temperatures. Approximately 60% of these dead embryos make excess mesoderm at the expense of endoderm, due to an E to MS fate transformation. Embryonic lethality is 100% penetrant for or10.

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

umnIs32 [myo-2p::GFP + NeoR, II: 11755713 (intergenic)] II. or1985 is a CRISPR/Cas9 engineered deletion of zyg-9 removing the entire open reading frame. Heterozygotes are wild-type and GFP+ and segregate WT GFP+ (hets), or1948 homozygotes (GFP-, lay 100% dead embryos) and paralysed DpyUnc GFP+ (mnC1 homozygotes). Maintain by picking WT GFP+. Reference: Harvey AM, et al. PLoS Genet. 2023 Jan 6;19(1):e1010363. doi: 10.1371/journal.pgen.1010363. PMID: 36608115

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 WT and segregate WT, Uncs with a protruding vulva, Long males and dead eggs. Uncs give only embryonic lethals which lack gut and make excess mesoderm (E adopts an MS-like fate). or10 is a recessive maternal-effect embryonic lethal. Zygotic phenotype of or10 is protruding vulva and slight uncoordination.

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.]

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

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.

Temperature sensitive maternal effect lethal mutation in F11H8.1 (Nedd8 activating enzyme). Permissive temperature is 15C, restrictive temperature is 25C. Embryos layed at restrictive temperature have spindle-orientation defects due to the mis-localization of MEI-1/MEI-2 to the mitotic spindle. Additionally, ectopic cleavage furrows are initiated during cytokinesis, and cell-cycle delays are apparent during interphase.

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

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

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.

Homozygous or195 hermaphrodites make 100% dead embryos at 26C. One-cell embryo has a very small but bipolar spindle, severe chromosome segregation defect. Maintain at 15C. Previously called spd-4. 2/06: From Bruce Bowerman: The or195 mutation changes base 10,679 of the cosmid clone T21E12 from a C to a T. This corresponds to dhc-1 cDNA nucleotide 9599 (WS153) , which is the center nucleotide of codon 3200. This codon changes from Serine in N2 to Leucine in or195 (S3200L). Note: this is not the same mutation for or195ts that we reported in Hamill et al, 2002(Dev Cell 3, 673-684). The mutation reported in our paper is not present in this strain. We apologize for the confusion. The pairs dhc-11a,b amplify the mutated fragment in dhc-1(or195). The mutation is near the center of this fragment; a clean (gel purified) DNA prep helps get a good read of it. dhc-11b: 5' aacagacgcacgattgacct 3'. dhc-11a: 5' ctcaaatcaaggaaggagct 3'. PCR conditions: 5 min at 94 degrees C; 30 sec at 94 degrees C; 30 sec at 55 degrees C; 1 min at 72 degrees C. 35 Cycles using Taq polymerase.

Maintain at 15C. Temperature-sensitive embryonic-lethal at restrictive temperature of 26C. Viable embryos at permissive temperature of 15C. Mitotic spindle in one-cell stage embryo assembles normally, but microtubules destabilize at anaphase and spindle becomes mis-positioned toward the posterior pole leading to highly abnormal cleavage and chromosome segregation defects. References: Gonczy P, et al. Dev Cell. 2001 Sep;1(3):363-75. Bellanger JM, et al. J Cell Sci. 2007 Aug 15;120(Pt 16):2963-73.

Homozygous mutant animals give rise to >99% dead embyros at the restrictive temperature of 26C, with embryos exhibiting a lack of pronuclear migration at the one-cell stage. Homozygous mutant animals give rise to viable progeny at the permissive temperature of 15C. Maintain at 15C.

Homozygous nearly sterile deletion chromosome balanced by bli-4- and GFP-marked translocation. Heterozygotes are WT with pharyngeal GFP signal, and segregate WT GFP, arrested hT2 aneuploids, and non-GFP ef15 homozygotes (pale, nearly sterile, lays few eggs). Homozygous hT2[bli-4 let-? qIs48] inviable. Pick WT GFP and check for correct segregation of progeny to maintain. Reference: Schmid M, et al. Genes Dev. 2009 Apr 1;23(7):824-36.

efEx12 [glp-1::TY1::EGFP::3xFLAG(92C12) + unc-119(+)]. Pick non-Unc to maintain. GFP expression in the proliferative region of the germ line (resembling endogenous GLP-1 protein localization), and also in spermatheca and other somatic tissues. Derived by bombarding strain DP38 with LAP-tagged glp-1 fosmid (WRM0630DF02).

Homozygous nearly sterile deletion chromosome balanced by bli-4- and GFP-marked translocation. Heterozygotes are WT with pharyngeal GFP signal, and segregate WT GFP, arrested hT2 aneuploids, and non-GFP ef8 homozygotes (nearly sterile, lays few eggs). Homozygous hT2[bli-4 let-? qIs48] inviable. Pick WT GFP and check for correct segregation of progeny to maintain. Reference: Rybarska A, et al. PLoS Genet. 2009 May;5(5):e1000494.

[NOTE: (10/22/2020) This strain also carries a (T to A) missense mutation in pry-1 which results in a PRY-1 N354K amino acid substitution.] bar-1(ga80) hermaphrodites are usually Egl and often have a protruding vulva (Pvl), although approx. 40% of animals appear WT on plates. Also slightly Unc. In bar-1(ga80) hermaphrodites any of the six vulval precursor cells (P3.p - P8.p) can sometimes fuse with hyp7 without dividing, and P5.p - P7.p can adopt the tertiary cell fate instead of the primary or secondary fates. In addition, the neuroblast QL and its progeny migrate towards the anterior instead of the posterior, and the cell P12 usually adopts the fate of P11. bar-1(ga80) do mate, but poorly. bar-1 encodes a beta-catenin molecule and the ga80 mutation is predicted to cause an early truncation of the protein.

deIs1[unc-30(+) + lin-39TL::GFP (yeast DNA)]. A translational fusion of GFP to the C terminus of LIN-39. Present on a YAC. Yeast chromosomal DNA was injected and integrated. Expression is very faint.

de4 is a weaker allele of pvl-5. Weakly penetrant Egl and Pvl phenotype. Low penetrance embryonic lethal and gonad migration defects. pvl-5(de4) animals have fewer Pn.p cells in the ventral midline at mid-L2 larval stage.

deIs4 [ajm-1::GFP + GFP::lin-39(YAC) + dpy-20(+)]. A transcriptional fusion of GFP to the ATG of lin-39, with a stop codon between GFP and LIN-39 sequences. Present on a YAC. Yeast chromosomal DNA was injected and integrated. Expression is very faint and may get fainter over time. Freeze upon receipt.

deIs4 [ajm-1::GFP + GFP::lin-39(YAC) + dpy-20(+)]. A transcriptional fusion of GFP to the ATG of lin-39, with a stop codon between GFP and LIN-39 sequences. Present on a YAC. Yeast chromosomal DNA was injected and integrated. Expression is very faint and may get fainter over time. Therefore, freeze upon receipt.

Superficially wild-type. Reference: Delaney K, et al. Genetics. 2018 Apr 10. pii: genetics.300909.2018. doi: 10.1534/genetics.118.300909. [Epub ahead of print].

Superficially wild-type. Null mutation: premature STOP codon and frame shift. Reference: Delaney K, et al. Genetics. 2018 Apr 10. pii: genetics.300909.2018. doi: 10.1534/genetics.118.300909. [Epub ahead of print].

Deletion of all genes coding H3.3 histone variant. Superficially wild-type with slight reduction of brood size at 25C. Reference: Delaney K, et al. Genetics. 2018 Apr 10. pii: genetics.300909.2018. doi: 10.1534/genetics.118.300909. [Epub ahead of print].

Superficially wild-type. Reference: Delaney K, et al. Genetics. 2018 Apr 10. pii: genetics.300909.2018. doi: 10.1534/genetics.118.300909. [Epub ahead of print].

Superficially wild-type. Reference: Delaney K, et al. Genetics. 2018 Apr 10. pii: genetics.300909.2018. doi: 10.1534/genetics.118.300909. [Epub ahead of print].

Superficially wild-type. Deletion of his-69 and his-70; complex substitution with an insertion at break site: aacaaatcagttctcacttttagcc-TCTTGGATTTAATAAATAAATTA-agtttaagtttccgccaatgaaaaa. Reference: Delaney K, et al. Genetics. 2018 Apr 10. pii: genetics.300909.2018. doi: 10.1534/genetics.118.300909. [Epub ahead of print].

Superficially wild-type. Reference: Delaney K, et al. Genetics. 2018 Apr 10. pii: genetics.300909.2018. doi: 10.1534/genetics.118.300909. [Epub ahead of print].

zzIs16 [(pJE3) eff-1p::GFP + rol-6(su1006)]. GFP+ Rollers. Chromosomal insertion of zzEx10. Integration site of zzIs16 not yet mapped, but it is not tightly linked to eff-1 II, unc-119 III, or jcIs1 IV. pJE3 has 7.5 kb of eff-1 upstream sequence inserted into pPD95.75, driving cytoplasmic GFP expression.

C-terminus of endogenous mig-17 locus tagged with mNeonGreen using CRISPR/Cas9. Reference: Fan J, et al. Elife. 2020 Apr 7;9:e55890. PMID: 32255430

Dpy. Semi-sterile. Bergerac background. [NOTE: Presumably sterile at 25°C because of temperature-sensitive zyg-12(ct350) in the background (Malone et al., Cell 2003).]

Dpy. Semi-sterile. Bergerac background. [NOTE: Presumably sterile at 25°C because of temperature-sensitive zyg-12(ct350) in the background (Malone et al., Cell 2003).]

Dpy. Bergerac background. [NOTE: Presumably sterile at 25°C because of temperature-sensitive zyg-12(ct350) in the background (Malone et al., Cell 2003).]

Dpy. Bergerac background. [NOTE: Presumably sterile at 25°C because of temperature-sensitive zyg-12(ct350) in the background (Malone et al., Cell 2003).]

Dpy. Bergerac background. [NOTE: Presumably sterile at 25°C because of temperature-sensitive zyg-12(ct350) in the background (Malone et al., Cell 2003).]

Dpy. Bergerac background. [NOTE: Presumably sterile at 25°C because of temperature-sensitive zyg-12(ct350) in the background (Malone et al., Cell 2003).]