Search Strains

OLLAS tag inserted at C-terminus of the endogenous meg-1 locus by CRISPR. Reference: Cassani M & Seydoux G. Development 2022 Nov 1;149(21):dev200920. doi: 10.1242/dev.200920. PMID: 36196602.

Embryonic P granules not segregated, 30% maternal effect sterility on average, RNAi insensitivity. meg-3(ax3055) and meg-4(ax3052) are precise deletions of the entire coding sequence made by CRISPR/Cas9, designed to be cut again to make insertions at the endogenous locus. References: Smith, J. et al. Elife. 2016 Dec 3;5:e21337. doi: 10.7554/eLife.21337. PMID: 27914198 Ouyang JPT, et al. Dev Cell. 2019 Sep 23;50(6):716-728.e6. PMID: 31402283

P granule size reduced, detection of MEG-3 by anti-OLLAS antibody. References: Smith, J. et al. Elife. 2016 Dec 3;5:e21337. doi: 10.7554/eLife.21337. PMID: 27914198 Schmidt H, bioRxiv 2020.10.15.340570 (2020) doi:10.1101/2020.10.15.340570.

meGFP inserted between P121 and V122 of endogenous MEG-3. Reference: Putnam A, et al. Nat Struct Mol Biol. 2019 Mar;26(3):220-226. Smith et al. Elife. 2016 Dec 3;5. pii: e21337.

tagRFP tag inserted into endogenous gtbp-1 locus. meGFP tag inserted between P121 and V122 of endogenous MEG-3. Reference: Lee, CYS, et al. Elife. 020 Jan 24:9:e52896. doi: 10.7554/eLife.52896. PMID: 31975687.

meGFP tag inserted at C-terminus of endogenous mut-16 locus. Reference: Thomas, Bodas, and Seydoux (2025). "FG repeats drive co-clustering of nuclear pores and P granules in the C. elegans germline."

meGFP inserted between P121 and V122 of endogenous MEG-3. qIs51 [myo-2p::GFP + pes-10p::GFP + F22B7.9p::GFP]. Heterozygotes are wild-type GFP+ and segregate non-GFP par-1 homozygotes (viable, lay dead embryos), wild-type GFP+ heterozygotes, and arrested nT1[qIs51] aneuploids. Pick wild-type GFP+ and check for correct segregation of progeny to maintain. Replacement of threonine 983 with alanine eliminates PAR-1 asymmetry. Reference: Folkman AW & Seydoux G. Development. 2019 Mar 25;146(6):dev171116. doi: 10.1242/dev.171116. PMID: 30814118

meGFP tag inserted at C-terminus of endogenous par-1 locus. Reference: Folkman AW & Seydoux G. Development. 2019 Mar 25;146(6):dev171116. doi: 10.1242/dev.171116. PMID: 30814118

qIs51 [myo-2p::GFP + pes-10p::GFP + F22B7.9p::GFP]. Heterozygotes are wild-type GFP+ and segregate non-GFP par-1 homozygotes (viable, lay viable progeny that are completely sterile), wild-type GFP+ heterozygotes, and arrested nT1[qIs51] aneuploids. Pick wild-type GFP+ and check for correct segregation of progeny to maintain. par-1(ax4208) removes the KA1 domain from a GFP-tagged version of PAR-1. Reference: Folkman AW & Seydoux G. Development. 2019 Mar 25;146(6):dev171116. doi: 10.1242/dev.171116. PMID: 30814118

mCherry inserted at C terminus of endogenous meg-3 locus. fog-2(q71) is male/female strain. Maintain by mating. XX animals are female. XO animals are WT males. Reference: Putnam A, et al. Nat Struct Mol Biol. 2019 Mar;26(3):220-226.

mCherry inserted at C terminus of endogenous pgl-3 locus. fog-2(q71) is male/female strain. Maintain by mating. XX animals are female. XO animals are WT males. Reference: Putnam A, et al. Nat Struct Mol Biol. 2019 Mar;26(3):220-226.

qIs51 [myo-2p::GFP + pes-10p::GFP + F22B7.9p::GFP]. Heterozygotes are wild-type myo-2::GFP+ and segregate non-myo-2::GFP ax3050; ax4209 homozygotes (maternal effect lethal), wild-type myo-2::GFP+ heterozygotes, and arrested nT1[qIs51] aneuploids. Pick wild-type myo-2::GFP+ and check for correct segregation of progeny to maintain. References: Smith J, et al. eLife. 2016 Dec 3;5:e21337. doi: 10.7554/eLife.21337. PMID: 27914198. Folkman A, et al. Development. 2019 Mar 25;146(6):dev171116. doi: 10.1242/dev.171116. PMID: 30814118.

20% Maternal effect sterility on average, embryonic P granule defect, RNAi insensitivity. Engineered mutations in the endogenous meg-3 locus disrupt the binding and localization of PGL proteins to P granules in the early embryo while MEG-3 itself is still forms an asymmetric cytoplasmic gradient and granules. References: Smith, J. et al. Elife. 2016 Dec 3;5:e21337. doi: 10.7554/eLife.21337. PMID: 27914198 Schmidt H, bioRxiv 2020.10.15.340570 (2020) doi:10.1101/2020.10.15.340570.

bqSi189 [lmn-1p::mCherry::his-58::pie-1 3'utr] II. mNeonGreen is inserted at the N-terminus of the endogenous npp-10 locus. bqSi189 is a single-copy MosSCI insertion into ttTi5605. Reference: Thomas et al. 2022. Cytoplasmic nucleoporin foci are stress-sensitive, non-essential condensates in C. elegans

OLLAS is inserted at the C-terminus of the endogenous npp-14 locus. Reference: Thomas et al. 2022. Cytoplasmic nucleoporin foci are stress-sensitive, non-essential condensates in C. elegans

ax4523 is a deletion residues 24-1387 of the npp-14 coding region. Reference: Thomas et al. 2022. Cytoplasmic nucleoporin foci are stress-sensitive, non-essential condensates in C. elegans

wrmScarlet is inserted at the C-terminus of the endogenous tdp-1 locus. Reference: Thomas et al. 2022. Cytoplasmic nucleoporin foci are stress-sensitive, non-essential condensates in C. elegans

wrmScarlet is inserted at the C-terminus of the endogenous ran-2 locus. Reference: Thomas et al. 2022. Cytoplasmic nucleoporin foci are stress-sensitive, non-essential condensates in C. elegans

bqSi189 [lmn-1p::mCherry::his-58::pie-1 3'utr] II. mNeonGreen is inserted at the N-terminus of the endogenous npp-9 locus. bqSi189 is a single-copy MosSCI insertion into ttTi5605. Reference: Thomas et al. 2022. Cytoplasmic nucleoporin foci are stress-sensitive, non-essential condensates in C. elegans

ax4544 is a CRISPR-engineered null mutant of npp-12. Reference: Thomas, Bodas, and Seydoux (2025). "FG repeats drive co-clustering of nuclear pores and P granules in the C. elegans germline."

bqSi189 [lmn-1p::mCherry::his-58::pie-1 3'utr] II. mNeonGreen is inserted at the C-terminus of the endogenous xpo-1 locus. bqSi189 is a single-copy MosSCI insertion into ttTi5605. Reference: Thomas et al. 2022. Cytoplasmic nucleoporin foci are stress-sensitive, non-essential condensates in C. elegans

3xFlag tag inserted at C-terminus of endogenous pgl-3 locus. Inserted into parental strain JH3503 meg-3(ax3054[meg-3::meGFP]). Reference: Ouyang JPT, et al. Nature Cell Biology 2022 (24)1129–1140. DOI: 10.1038/s41556-022-00940-w.

3xFlag tag inserted at truncated C-terminus of endogenous pgl-3 locus. Inserted into parental strain JH3503 meg-3(ax3054[meg-3::meGFP]). Reference: Ouyang JPT, et al. Nature Cell Biology 2022 (24)1129–1140. DOI: 10.1038/s41556-022-00940-w.

wrmScarlet is inserted at the C-terminus of the endogenous npp-11 locus. Reference: Thomas et al. 2022. Cytoplasmic nucleoporin foci are stress-sensitive, non-essential condensates in C. elegans

wrmScarlet is inserted at the C-terminus of the endogenous npp-22 locus. Reference: Thomas et al. 2022. Cytoplasmic nucleoporin foci are stress-sensitive, non-essential condensates in C. elegans

mNeonGreen tag inserted at the C-terminus of the endogenous npp-12 locus. Reference: Thomas L, et al. EMBO J. 2023 Jul 3;42(13):e112987. doi: 10.15252/embj.2022112987. PMID: 37254647.

mNeonGreen tag inserted at the C-terminus of the endogenous npp-14 locus. NPP-14::mNeonGreen is expressed in all tissues. Reference: Thomas L, et al. Development. 2025 Mar 15;152(6):dev204585. doi: 10.1242/dev.204585. PMID: 40067309.

mNeonGreen tag inserted at N-terminus of endogenous imb-1 locus. Expressed in all tissues. Reference: Thomas, Bodas, and Seydoux (2025). "FG repeats drive co-clustering of nuclear pores and P granules in the C. elegans germline."

wrmScarlet tag inserted at C-terminus of endogenous nucl-1 locus. Reference: Thomas, Bodas, and Seydoux (2025). "FG repeats drive co-clustering of nuclear pores and P granules in the C. elegans germline."

AID*::3xFLAG tags inserted at C-terminus of endogenous npp-11 locus. AID* is a minimal AID construct of 44 amino acids (https://academic.oup.com/genetics/article/217/3/iyab006/6104563). Reference: Thomas, Bodas, and Seydoux (2025). "FG repeats drive co-clustering of nuclear pores and P granules in the C. elegans germline."

ax4587 is a CRISPR-engineered deletion removing the FGG repeats of GLH-1. Reference: Thomas, Bodas, and Seydoux (2025). "FG repeats drive co-clustering of nuclear pores and P granules in the C. elegans germline."

wrmScarlet tag inserted at C-terminus of endogenous car-1 locus. Reference: Thomas, Bodas, and Seydoux (2025). "FG repeats drive co-clustering of nuclear pores and P granules in the C. elegans germline."

ujIs113 [pie-1p::mCherry::H2B::pie-1 3'UTR + nhr-2p::his-24::mCherry::let-858 3'UTR + unc-119(+)] II. ujIs193 [nhr-67::TY1::EGFP::3xFLAG + unc-119(+)]. TY1::EGFP::3xFLAG tag inserted in frame at C-terminus of coding sequence in fosmid ID#WRM0633cC01 by recombineering. Expression of transgene confirmed by GFP.

ujIs113 [pie-1p::mCherry::H2B::pie-1 3'UTR + nhr-2p::his-24::mCherry::let-858 3'UTR + unc-119(+)] II. ujIs153 [ceh-13::TY1::EGFP::3xFLAG + unc-119(+)]. TY1::EGFP::3xFLAG tag inserted in frame at C-terminus of coding sequence in fosmid ID#WRM0622c06 by recombineering. Expression of transgene confirmed by GFP.

Heterozygotes are WT and segregate WT, Dpys which give only dead eggs, mid-larval lethals (hT1 homozygotes), males and dead eggs. Mutation in pop-1 results in the MS blastomere adopting the fate of the E blastomere. pop-1 mutant embryos have twice the amount of wild type gut and only make anterior pharynx. him-5 is outside the region balanced by hT2.

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. Embryos from unc-30 mex-5 homozygotes produce approximately the WT number of cells but do not undergo body morphogenesis and die without hatching.

Heterozygotes are WT. Embryos from mex-6; unc-30 mex-5 homozygotes produce approximately the WT number of cells but do not undergo body morphogenesis and die without hatching.

zuIs20 [par-3p::par-3::ZF1::GFP + unc-119(+)]. Transgenic PAR-3 is subject to ZIF-1-dependent degradation. GFP-tagged PAR-3 is degraded in early embryonic somatic cells. Worms carrying the transgene are non-Unc and express GFP very weakly in early embryos (only detectable by antibody staining), and later in adherens junctions of epithelial cells.

zuIs54 [par-6p::par-6::ZF1::GFP + unc-119(+)]. Unc. GFP-tagged PAR-6 that degrades in early embryonic somatic cells; rescues the Par phenotype of par-6(zu222). Delayed gastrulation of endodermal cells. Reference: Nance J, Munro EM, Priess JR. Development. 2003 Nov;130(22):5339-50.

zuIs20 [par-3p::par-3::ZF1::GFP + unc-119(+)]. Lon. Him. Transgenic PAR-3 is subject to ZIF-1-dependent degradation. GFP-tagged PAR-3 that is degraded in early embryonic somatic cells. Rescues the Par phenotype of par-3(it71). Delayed endodermal cell gastrulation. Reference: Nance J, Munro EM, Priess JR. Development. 2003 Nov;130(22):5339-50.

Slow growth and a maternal-effect enhancer of the efl-1(se1) embyronic lethal phenotype. Unc.

Heterozygotes are WT and segregate WT, DpyUnc and Rollers. Rollers give only dead eggs. Maintain by picking WT. mex-1 is to the right of rol-1, is uncovered by mnDf87 and is allelic to mel-21.

Heterozygotes are WT and segregate WT, Dpy Uncs, and homozygous q343 (make small abnormal oocytes. Pick WT and check for correct segregation of progeny to maintain. Reference: Francis R, et al. Genetics. 1995 Feb; 139(2): 579–606. doi: 10.1093/genetics/139.2.579 PMID: 7713419.

Heterozygotes are WT and segregate WT, DpyUnc and early larval lethals. Received new stock 5/98. Check carefully for segregation of Dpy Unc progeny; dpy-13 can be lost easily. Do not distribute this strain; other labs should request it from the CGC.

Semi-dominant Mog. Temperature-sensitive sterile. Maintain at 15C. Masculization of germline (Mog) at 25C.

qIs19 [lag-2p::GFP::unc-54 3'UTR + rol-6(su1006)] V. Rollers. Integration of qEx233. GFP expression in DTCs and other defined regions. Do not distribute this strain; other labs should request it directly from the CGC.

qEx319 [lag-2::cMyc + rol-6(su1006)].  Rollers.  Extrachromosomal array carrying myc-tagged LAG-2 protein partially rescues lag-2(null).  About 70% of progeny are Lag.  Survivors are Rollers.  Reference: Crittenden et al., Mol Biol Cell. 2006 Jul;17(7):3051-61.

Temperature-sensitive allele of cyd-1. Phenotypically wild-type at 15C. At 25C, approximately one-third of q626 hermaphrodites were missing one distal tip cell (DTC) and approximately one-half of q626 males were missing the linker cell (LC). q626 also feminizes the XO gonad. q626 affects the production of SGP daughters in both sexes. There is also a maternal component since the mutant phenotype is almost fully penetrant in offspring of homozygous mothers, but less penetrant in offspring of heterozygous mothers. Reference: Tilmann C & Kimble J. Dev Cell. 2005 Oct;9(4):489-99.

qIs26 [lag-2::GFP + rol-6(su1006)]. Throws heterozygous Rollers and Unc eT1 homozygotes. qIs26 was integrated into qC1 and in the process made qC1 homozygous lethal. The distal tip cells are GFP+. It was an integration of qEx233. Do not distribute this strain; other labs should request it directly from the CGC.