agIs219 [T24B8.5p::GFP::unc-54-3' UTR + ttx-3p::GFP::unc-54-3' UTR] III. qd130 suppresses increased pathogen susceptibiliy (Esp) of atf-7(qd22). References: Shivers RP, et al. PLoS Genet. 2010 Apr 1;6(4):e1000892.

agIs219 [T24B8.5p::GFP::unc-54-3' UTR + ttx-3p::GFP::unc-54-3' UTR] III. atf-7(qd22 qd130) suppresses increased pathogen susceptibiliy (Esp) of pmk-1(km25). References: Shivers RP, et al. PLoS Genet. 2010 Apr 1;6(4):e1000892.

agIs219 [T24B8.5p::GFP::unc-54-3' UTR + ttx-3p::GFP::unc-54-3' UTR] III. atf-7(qd22 qd130) suppresses increased pathogen susceptibiliy (Esp) of sek-1(km4). References: Shivers RP, et al. PLoS Genet. 2010 Apr 1;6(4):e1000892.

Isolated by Adeline Seah and Takao Inoue from a rotten fruit in an urban garden in Singapore (1.32°N, 103.82°E) on 7/19/2006.

Isolated by Adeline Seah and Takao Inoue from a rotten fruit in an urban garden in Singapore (1.45°N, 103.72°E) on 7/19/2007.

dhIs26 [daf-12a::GFP + lin-15(+)]. DAF-12::GFP localized primarily in nucleus, except during mitosis. Expressed widely in most cells including tissues modified for dauer formation or by stage from embryo to adult, but most elevated and widespread during L2.

dhIs59 [Topo::daf-9::GFP + lin-15(+)]. Perinuclear expression in a ventral pair of bilateral neurons identified as the IL1Vs or URAVs in the anterior ganglia. By mid-L2, expression in the cytoplasm of the hypodermis, the syncitial epidermis, but absent from midline, epidermal seam cells. Levels peak around the L2 molt and diminish during L4. In some cases, transient expression seen in the L3 vulval blast cells. Also expressed within the hermaphrodite spermatheca starting in late L4 larvae and continuing eve in old adults. In males, expression in IL1V/URAVs and hypodermis but not somatic gonad. In dauer larvae, strong expression in IL1V/URAV and specifically extends into axonal but not dendritic processes. In post-dauer stages, expression in a pattern similar to reproductively growing animals, except expression is absent in the hypodermis. Grow at 20C. May still contain lin-15(n765) mutation in the background.

non-Daf. Temperature-sensitive phenotypes: at 20C half of the animals are egg-laying defective with occasional mispositioned gonadal arms; at 25C, 18% arrest as embryos: those animals that hatch usually display variable morphology defects in body and pharynx; nearly all animals that live to adults are small, clear, slightly uncoordinated, constipated, and virtually sterile. Maintain at 20C or below.

acd-1 and delm-2 are tandem paralogs. This double mutant was created by CRISPR-engineered deletion of acd-1 in a delm-2(ok1822) background (parental strain RB1523). acd-1(sta6) is predicted to be a null allele (~200bp indel causing frameshift in exon 4).

acd-1 and delm-2 are tandem paralogs. This double mutant was created by CRISPR-engineered deletion of acd-1 in a delm-2(ok1822) background (parental strain RB1523). acd-1(sta6) is predicted to be a null allele (~200bp indel causing frameshift in exon 4). This triple mutant strain was made by crossing the acd-1(sta6) delm-2(ok1822) double mutant with delm-1(ok1226) parental strain RB1177.

staEx4 [T20F7.6p(R81Q)::T20F7.6 + pha-1(+)]. Constitutively active T20f7.6 promoter construct (CA3). Maintain at 25 degrees. Superficially wild-type with increased lifespan and stress resistance. Reference: Greer EL et al Curr Biol 2007 Oct 9;17(19):1646-56.

Reduced lifespan. Maintain under normal conditions. The parental rbr-2 strain was outcrossed 6x and the parental set-2 strain was outcrossed 2x. Reference: Greer EL et al Nature (2010) doi: 10.1038/nature09195.

asEx83 [spe-19(+) + myo-3p::GFP]. Pick GFP+ to maintain. asEx83 contains 7.3kb genomic fragment including spe-19 (Y113G7A.10) and 850bp of upstream sequence. Transgene rescues spe-19(eb52) sperm activation defect. GFP+ hermaphrodites are fertile. non-GFP hermaphrodites are sterile. All males are fertile.

asEx78 [spe-38p::spe-38(cDNA)::spe-38 3'UTR + myo-3p::GFP]. Pick GFP+ to maintain. GFP+ worms are fertile; animals that have lost the array are sterile.

Him. Temperature-sensitive sterile. Small brood size even at permissive temperatures; pick fertile animals and maintain at 15C. Worms lacking spe-45 function produce morphologically normal and motile sperm that cannot fuse with oocytes despite direct contact in the reproductive tract. spe-45 hermaphrodites and males are subfertile at 16C and sterile at 25C. Reference: Singaravelu G, et al. Current Biology 2015. http://dx.doi.org/10.1016/j.cub.2015.10.055

Endogenous cycl-2 locus tagged with mNeonGreen (mNG). Green fluorescence in sperm. Him. Reference: Krauchunas AR, et al. (2020). C. elegans CYLC-2 localizes to sperm. microPublication Biology. 10.17912/micropub.biology.000314.

Dark in color.

Isolated in Pennsylvania. SDS resistant dauers. Males are rare.

Isolated in Pennsylvania. Males are rare.

Mesorhabditis spiculigera. Isolated in Pennsylvania. NOTE: (06/10/2016) AF72 was originally described as Mesorhabditis miotki, but K. Kiontke has determined through morphological inspection that this is actually a strain of Mesorhabditis spiculigera.

Isolated in Ohio.

Isolated at Niagara Falls in Canada. SDS resistant dauers look like C. elegans predauers. Males are rare.

Temperature-sensitive embryonic-lethal mutant. Maintain at 15C. Shift L4s to 25C overnight to observe mutant phenotype of embryos produced by adults. Mutants lack 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). This strain can be used for CRISPR-Cas9 co-conversion. There is a causal mis-sense mutation present in zen-4(cle5), GAC to AAC (D520N), and one silent mutation, GCA to GCT at codon 519, that introduces an AluI site for RFLP analysis. A previous deposited version of this strain, zen-4(ok153), possessed two mis-sense mutations: GAC to AAC (D520N) and GAT to AAT (D735N). Reference: Farboud B, et al. Genetics Early online November 30, 2018; https://doi.org/10.1534/genetics.118.301775.

Temperature-sensitive embryonic-lethal mutant. Maintain at 15C. Shift L4s to 25C overnight to observe mutant phenotype of embryos produced by adults. Mutants lack 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). This strain can be used for CRISPR-Cas9 co-conversion. There is a causal mis-sense mutation present in zen-4(cle10), GAC to AAC (D520N), and two silent mutations. One silent mutation is a CGA to CGG mutation at codon 523 that creates a recognition site for a Cas9 guide RNA, in order to use zen-4(cle10ts) as a CRISPR/Cas9 co-conversion marker. The other silent mutation is a GCA to GCT mutation at codon 519 that introduces an AluI site for RFLP analysis. Reference: Farboud B, et al. Genetics Early online November 30, 2018; https://doi.org/10.1534/genetics.118.301775.

zdIs13 [tph-1p::GFP] IV. armIs5 [zfp-1(fosmid)::FLAG + unc-119(+)]. Integrated zfp-1 transgene expressed in the germline. Fosmid-based zfp-1::FLAG transgene fully rescues stress-sensitivity and reduced lifespan in zfp-1(ok554) homozygotes. ChIP with anti-FLAG antibody detects ZFP-1::FLAG localization to promoters of highly expressed genes. References: Mansisidor AR, et al. PLoS Genet. 2011 Sep;7(9):e1002299. Avgousti DC, et al. Mol Cell Biol. 2013 Mar;33(5):999-1015. Cecere G, et al. Mol Cell. 2013 Jun 27;50(6):894-907.

armEx58 [WRM0611aH08-Del8mer + unc-119(+)]. Pick non-Unc to maintain. This strain contains a transgenic array that expresses a derivative WRM0611aH08 fosmid. The WRM0611aH08 fosmid contains the niDF199 locus (around 4 kb) that is deleted in the natural C. elegans isolate strain JU258. JU258 worms lack specific 21U-RNAs normally present in N2 worms due to this deletion of the niDF199 locus. This derivative fosmid construct lacks the upstream 8-mer motif (CTGTTTCA) next to 21U-3372. The expression of this individual 21U-RNA is lost in transgenic animals. unc-119(ed3) was crossed into JU258, the niDf199IV deletion was confirmed by PCR, and these Unc worms were used for bombardment. Reference: Cecere G, et al. Mol Cell. 2012 Sep 14;47(5):734-45.

armEx53 [WRM0611aH08 + unc-119(+)]. Pick non-Unc to maintain. unc-119(ed3) was crossed into JU258, the niDf199IV deletion was confirmed by PCR, and these Unc worms were used for bombardment. This strain contains a transgenic array that expresses the WRM0611aH08 fosmid construct. This fosmid contains the niDF199 locus (around 4 kb) that is deleted in the natural C. elegans isolate strain JU258. JU258 worms lack specific 21U-RNAs normally present in N2 worms due to this deletion of the niDF199 locus. Expression of this fosmid construct in JU258 worms restores the expression of the missing 21U-RNAs in the germline, as measured by RT-qPCR. Reference: Cecere G, et al. Mol Cell. 2012 Sep 14;47(5):734-45.

armEx5 [zfp-1(fosmid)::GFP + unc-119(+)]. Pick non-Unc to maintain. Fosmid-based zfp-1::GFP transgene fully rescues stress-sensitivity and reduced lifespan in zfp-1(ok554) homozygotes. Nuclear expression of zfp-1::GFP is observed ubiquitously in somatic cells in all developmental stages; high levels of GFP expression is observed in oocytes with lower levels of expression in the distal germline. References: Mansisidor AR, et al. PLoS Genet. 2011 Sep;7(9):e1002299. Avgousti DC, et al. Mol Cell Biol. 2013 Mar;33(5):999-1015.

armEx196 [mex-5p::unc-130::GFP::tbb-2 3'UTR + Cbr-unc-119(+)]. Pick non-Unc to maintain. unc-119(ed3) was crossed into JU258, the niDf199IV deletion was confirmed by PCR, and these Unc worms were used for bombardment. JU258 worms lack specific 21U-RNAs normally present in N2 worms due to deletion of the niDF199 locus. Reference: Cecere G, et al. Mol Cell. 2012 Sep 14;47(5):734-45. Reference: Cecere G, et al. Mol Cell. 2012 Sep 14;47(5):734-45.

sra-13(zh13) mutants display stronger chemotaxis to limiting concentrations of isoamylalcohol and diacetyl than WT animals. Deletion allele. 396 bp of 5' promoter sequence and all but the last exon are removed; probably a null allele.

CRISPR allele of endogenous let-23, which expresses let-23::GFP fusion protein and is susceptible for conditional knock-out via incorporated FRT sites with FLPase expression. Reference: Konietzka et al. 2019. Current Biology (accepted).

rmIs175 [unc-54p::Hsa-sod-1 (WT)::YFP]. Array encodes wild-type human SOD-1. YFP expression in body wall muscle. Array is prone to silencing; maintain by picking worms displaying typical aggregation patterns. Reference: Gidalevitz T, et al., PLoS Genet. 2009 Mar;5(3):e1000399.

rmIs290 [unc-54p::Hsa-sod-1 (127X)::YFP]. Array encodes mutated form of human SOD-1. YFP expression in body wall muscle. Array is prone to silencing; maintain by picking worms displaying typical aggregation patterns. Reference: Gidalevitz T, et al., PLoS Genet. 2009 Mar;5(3):e1000399.

sosIs5 [rab-3p::Cerulean-Venus::lgg-1 + unc-119(+)]. Maintain at 15 degrees. Temperature-sensitive embryonic lethal. 100% dead embryos at 25 degrees. Small, posteriorly displaced first mitotic spindle with defective chomosome segregation and cytokinesis.

olaEx3013 [ttx-3p:mCherry::eGFP::lgg-1 + unc-122p::mCherry]. Pick animals with mCherry+ coelomocytes to maintain array. Unc. Tandem tags on LGG-1 label immature autophagosomes with both GFP and mCherry, but because GFP is preferentially quenched in an acidic environment, mature structures lose their GFP signal and display solely mCherry signal. Reference: Hill SE & Colon-Ramos D. 2018 bioRxiv 287144; doi: https://doi.org/10.1101/287144

olaEx3013 [ttx-3p:mCherry::eGFP::lgg-1 + unc-122p::mCherry]. Pick animals with mCherry+ coelomocytes to maintain array. Paralyzed Unc. Tandem tags on LGG-1 label immature autophagosomes with both GFP and mCherry, but because GFP is preferentially quenched in an acidic environment, mature structures lose their GFP signal and display solely mCherry signal. Reference: Hill SE & Colon-Ramos D. 2018 bioRxiv 287144; doi: https://doi.org/10.1101/287144

olaEx3013 [ttx-3p::mCherry::eGFP::lgg-1 + unc-122p::mCherry]. Pick animals with mCherry+ coelomocytes to maintain array. Unc. Slow moving. Tandem tags on LGG-1 label immature autophagosomes with both GFP and mCherry, but because GFP is preferentially quenched in an acidic environment, mature structures lose their GFP signal and display solely mCherry signal. Reference: Hill SE & Colon-Ramos D. 2018 bioRxiv 287144; doi: https://doi.org/10.1101/287144

jamSi2 [mex-5p::rde-1(+)] II. mex-5p::rde-1(+) inserted into ttTi5605 on LG II. Tissue-specific RNAi rescue allows silencing in germline and intestine. Reference: Marre JA, et al. Proc Natl Acad Sci USA. 2016.

wtfIs145 [rab-3p::his-24::GCaMP6s::unc-54 3' UTR + pBX]. wtfIs348 [pAS3-5xQUAS::(delta)pes-10p::AI::gur-3G::unc-54 3' UTR + pAS3-5xQUAS::(delta)pes-10p::AI::prdx-2G::unc-54 3' UTR + pAS-3-rab-3p::AI::QF+GR::unc-54 3' UTR + unc-122::GFP]. Keeps plates covered to avoid unnecessary exposure to light. This strain expresses a purple light-sensitive optogenetic protein system (i.e., GUR-3 and PRDX-2) in each neuron, and GFP in coelomocytes. GCaMP6s transgene allows for imaging whole-brain calcium activity with neuronal identification using NeuroPAL system. unc-31(wtf502) is a CRISPR-engineered deletion allele. otIs669 [UPN::NLS::TagRFP-T + acr-5::NLS::mTagBFP2::H2B + flp-1::NLS::mTagBFP2::H2B + flp-6::NLS::mTagBFP2::H2B + flp-18::NLS::mTagBFP2::H2B + flp-19::NLS::mTagBFP2::H2B + flp-26::NLS::mTagBFP2::H2B + gcy-18::NLS::mTagBFP2::H2B + ggr-3::NLS::mTagBFP2::H2B + lim-4::NLS::mTagBFP2::H2B + pdfr-1::NLS::mTagBFP2::H2B + srab-20::NLS::mTagBFP2::H2B + unc-25::NLS::mTagBFP2::H2B + cho-1::NLS::CyOFP1::H2B + flp-13::NLS::CyOFP1::H2B + flp-20::NLS::CyOFP1::H2B + gcy-36::NLS::CyOFP1::H2B + gpa-1::NLS::CyOFP1::H2B + nlp-12::NLS::CyOFP1::H2B + nmr-1::NLS::CyOFP1::H2B + ocr-1::NLS::CyOFP1::H2B + osm-9::NLS::CyOFP1::H2B + srh-79::NLS::CyOFP1::H2B + sri-1::NLS::CyOFP1::H2B + srsx-3::NLS::CyOFP1::H2B + unc-8::NLS::CyOFP1::H2B + acr-2::NLS::mNeptune2.5 + ceh-2::NLS::mNeptune2.5 + dat-1::NLS::mNeptune2.5 + dhc-3::NLS::mNeptune2.5 + eat-4::NLS::mNeptune2.5 + flp-3::NLS::mNeptune2.5 + gcy-35::NLS::mNeptune2.5 + glr-1::NLS::mNeptune2.5 + gcy-21::NLS::CyOFP1::H2B::T2A::NLS::mTagBFP2::H2B + klp-6::NLS::mNeptune2.5::T2A::NLS::CyOFP1::H2B + lim-6::NLS::mNeptune2.5::T2A::NLS::CyOFP1::H2B + mbr-1::NLS::mNeptune2.5::T2A::NLS::mTagBFP2::H2B + mec-3::NLS::CyOFP1::H2B::T2A::NLS::mTagBFP2::H2B + odr-1::NLS::mNeptune2.5::T2A::NLS::mTagBFP2::H2B + srab-20::NLS::mNeptune2.5::T2A::NLS::mTagBFP2::H2B] V. UPN (Ultra Pan-Neuronal) promoter contains four short pan-neuronal promoters fused together (unc-11::rgef-1::ehs-1::ric-19). NeuroPAL (Neuronal Polychromatic Atlas of Landmarks) transgene used to resolve unique neural identities in whole-brain images. Derived by out-crossing parental strain OH15262 an additional six times before incorporating other transgenes. References: Yu X, et al. Elife. 2021 Jul 14;10:e66410. doi: 10.7554/eLife.66410. PMID: 34259623 Randi F, et al. (2022). A functional connectivity atlas of C. elegans measured by neural activation. arXiv:2208.04790. https://doi.org/10.48550/arXiv.2208.04790

ieSi57 [eft-3p::TIR1::mRuby::unc-54 3'UTR + Cbr-unc-119(+)] II. cer135 is a rpb-2::GFP(delta)piRNA::AID::3xFLAG tag inserted into the endogenous rpb-2 locus. This strain allows auxin-dependent disruption of RNA polymerase II with dose-dependent lifespan shortening. Reference: Oswal N, et al. PLoS Comput Biol. 2022 Sep 30;18(9):e1010415. PMID: 36178967.

adeIs1 [mex-5::spd-1::GFP + unc-119(+)] II. The transgene has been inserted on chromosome II, using the MosSCI technique. This strains expresses the SPD-1 protein fused to GFP in the germline (both males and females) and in embryos. SPD-1 is nucleolar in interphase and labels the central spindle in mitosis and meiosis, later accumulating at the midbody. Reference: Nahaboo W, et al. Mol Biol Cell. 2015 Jun 1;26(11):2020-9. doi: 10.1091/mbc.E14-12-1577.

adeIs1 [mex-5::spd-1::GFP + unc-119(+)] II. ltIs37 [pie-1p::mCherry::his-58 + unc-119(+)] IV. Superficially wild-type. SPD-1::GFP and mCherry-tagged histones allow visualisation of chromatin with central spindle/midbody during cell divisions. Reference: Nahaboo W, et al. Mol Biol Cell. 2015 Jun 1;26(11):2020-9.

kyIs140 [str-2::GFP + lin-15(+)] I. Kinker; can't back up. srf-6 mutants express str-2::GFP in both AWC neurons (2AWC ON phenotype; wild-type phenotype is 1AWC ON): check for this phenotype to avoid reversion of srf-6(yj13). srf-6 mutants were originally identified by binding of an L1-specific antibody in later larval stages (L1-L4).

Heterozygotes are Unc and segregate Uncs (heterozygotes), non-Unc spo-11 homozygotes, and dead eggs (nT1 homozygotes). spo-11 homozygotes produce an average of ~200 fertilized eggs but only about 0.1 progeny survive to adulthood. When mated to N2 males, spo-11 homozygotes will produce at least 5-10 cross progeny.

Can be maintained by chunking or setting up male/hermaphrodite crosses. Dpy.

Balanced heterozygotes are GFP+ Unc and segregate GFP+ Unc (heterozygotes), non-GFP non-Unc spo-11(me44) homozygotes, and dead eggs (nT1 homozygotes). spo-11(me44) homozygotes are viable and produce more than 90% dead eggs (a large fraction of the survivors are males — strong Him phenotype); cytologically they lack chiasmata in diakinesis-stage oocytes and lack RAD-51 foci. Maintain by picking Unc.

Sperm activation in virgin males. Poor sperm transfer.

Sperm activation in virgin males. Very poor sperm transfer.