daf-d. Strong heterochronic phenotypes in seam, somatic gonad, intestine. Class I allele. Occasional abnormal dauers under exhausted conditions.

Weak heterochronic phenotypes in seam, intestine, somatic gonad. Class V allele.

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.

daf-d. Weak heterochronic phenotypes in seam, somatic gonad and intestine. Class III allele.

dhIs64 [daf-9p::daf-9::GFP + lin-15(+)].

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.

Mig on low cholesterol. Single daf-c at 27C, weak Mig. Strong expression in intestine at all stages. Grow at 20C.

daf-d. Strong heterochronic phenotypes in seam, somatic gonad, intestine. Class I allele.

daf-d, suppresses daf-12(rh61) daf-12(rh274) gonadal migration defects.

daf-d, suppresses daf-12(rh61) daf-12(rh274) gonadal migration defects.

Precocious fusion of seam cells one stage earlier (prior to L3 molt); impenetrant gonadal migration defects; SynMig on daf-12 RNAi.

daf-d. Strong heterochronic phenotypes in seam, somatic gonad, intestine. Class I allele.

Gonadal lead cell Mig. Weak heterochronic phenotype in intestine. Weakly daf-c at 25C. Class V allele.

daf-d. Strong heterochronic phenotypes in seam and intestine. Weak heterochronic phenotypes in somatic gonad. Class II allele.

Strong heterochronic phenotypes in seam, somatic gonad, and intestine. Weakly daf-c at 15C. Class IV allele.

Daf-d, weak heterochronic phenotypes in seam, somatic gonad, intestine. Class III allele.

Daf-c, gonadal Mig, weak heterochronic phenotypes in intestine and seam. Class VI allele.

Strong heterochronic phenotypes in seam, somatic gonad, and intestine. Heterochronic phenotypes less penetrant at 15C. Weakly daf-c at 25C. Class IV allele.

daf-c. Gonadal Mig. Weak heterochronic phenotypes in intestine. Class VI allele.

mfIs42 [Cel-sid-2(+) + Cel-myo-2::dsRed]. Maintain at 15C. Feminization is partially-penetrant at 15C; most hermaphrodites are somewhat self-fertile and can lay small broods. Can be maintained by crossing with male siblings. Feminized C. briggsae strain made susceptible to RNAi knock-down by feeding dsRNA due to the transgenic expression of C. elegans SID-2. Generated by crossing parental strains JU1018 with RE665. Reference: Booth LN, eLife 2019 Jul 8;8:e46418. PMID: 31282863.

aeaIs10 [rgef-1p::GCaMP6s::3xNLS + lin-15(+)]. Worms express GCaMP6s in all neuronal nuclei. Pan-neuronal imaging strain; suitable for rapid whole-brain imaging due to brightness, good signal to noise ratio, and relative resistance to photo-bleaching. Reference: Susoy V, et al. Cell. 2021 Sep 30;184(20):5122-5137.e17. PMID: 34534446

Reduced brood size. Reduced hatching. Slow growth. Larval lethal. Larval arrest. Bursts at vulva. Suppresses the mat-3 one-cell arrest at 25C.

Unc. Gain-of-function allele of fzy-1.

Unc. Previously called AG164 by the CGC.

Maintain at 15C. Temperature-sensitive dauer constitutive: 100% dauers at 25C, leaky at 20C. Dpy. Crowds.

uthEx649 [rpn-6p::tdTomato + rol-6(su1006)]. Temperature-sensitive. Maintain at 15C; sterile at 25C. Rollers. Pick rollers to maintain array. Reference: Vilchez D, et al. Nature. 2012 Sep 13;489(7415):263-8.

uthIs235 [sur-5p::hsf-1::unc-54 3'UTR + myo-2p::tdTomato::unc-54 3' UTR]. Long-lived, thermotolerant. Small brood size. Reference: Baird NA, et al. Science. 2014 Oct 17;346(6207):360-3.

uthIs225 [sur5p::hsf-1(CT-Delta)::unc-54 3'UTR + myo-2p::tdTomato::unc-54 3' UTR]. Long-lived, thermotolerant. Small brood size. Reference: Baird NA, et al. Science. 2014 Oct 17;346(6207):360-3.

uthEx633 [myo-3p::GFP]. Maintain at 15C; sterile at 25C. Pick animals with GFP expression in body wall muscle to maintain. Reference: Vilchez D, et al. Nature. 2012 Sep 13;489(7415):263-8.

uthEx557 [sur-5p::rpn-6 + myo-3p::GFP]. Maintain at 15C; sterile at 25C. Pick animals with GFP expression in body wall muscle to maintain. Reference: Vilchez D, et al. Nature. 2012 Sep 13;489(7415):263-8.

zcIs4 [hsp-4::GFP] V. uthIs269 [sur-5p::hsf-1::unc-54 3'UTR + myo-2p::tdTomato::unc-54 3' UTR]. ER stress resistence. Reference: Taylor RC, Dillin A. Cell. 2013 Jun 20;153(7):1435-47.

otIs225 [cat-4::GFP] II. armEx218 [unc-119p::daf-18 + unc-119p::tagRFP + rol-6(su1006)]. Pick Rollers to maintain. Transgenic array expresses DAF-18 from unc-119 pan-neuronal promoter; rescues the HSN under-migration phenotype in daf-18 null mutants. Reference: Kennedy LM, et al. Cell Rep. 2013 Sep 12;4(5):996-1009.

zdIs13 [tph-1p::GFP] IV. armEx257 [dpy-7p::daf-16b::tagRFP + myo-2::GFP]. Pick animals with GFP+ pharynx to maintain. armEx257 rescues the daf-16(mu86) HSN undermigration phenotype. dpy-7p::daf-16b::tagRFP expression is localized to nuclei in hypodermal tissue during the comma, 1.5 and 2-fold stages, becoming cytoplasmic or perinuclear by the 3-fold stage and persisting into adulthood. Reference: Kennedy LM, et al. Cell Rep. 2013 Sep 12;4(5):996-1009.

Daf-d. Unc.

bafIs4 [daf-12 (fosmid) + unc-119(+)]; rescues both daf-12 and unc-119. Reference: Hochbaum D, et al. PLoS Genet. 2011 Jul;7(7):e1002179.

bafIs63 [lin-42p(mut)::GFP + unc-119(+)]. lin-42p(mut)::GFP reporter consists of 2 kb upstream of lin-42a isoform subcloned into modified pPD95.75 vector also carrying unc-119(+); all potential DAF-12 binding sites have been mutated. Reference: Hochbaum D, et al. PLoS Genet. 2011 Jul;7(7):e1002179.

bafIs62 [lin-42p::GFP + unc-119(+)]. lin-42p::GFP reporter consists of 2 kb upstream of lin-42a isoform subcloned into modified pPD95.75 vector also carrying unc-119(+). Array was crossed into strain ALF3 to create ALF82. Reference: Hochbaum D, et al. PLoS Genet. 2011 Jul;7(7):e1002179.

bafIs9 [daf-12::TAP (fosmid) + unc-119(+)]; rescues both daf-12 and unc-119. TAP tag inserted into daf-12 fosmid. Reference: Hochbaum D, et al. PLoS Genet. 2011 Jul;7(7):e1002179.

juIs76 [unc-25p::GFP + lin-15(+)] II. Maintain at 15C. Temperature sensitive dauer constitutive. 100% dauers at 25C. Leaky at 20C. Crowds. Growth slow. GFP expression in GABAergic motor neurons.

juIs76 [unc-25p::GFP + lin-15(+)] II. Maintain at 15C. Temperature-sensitive dauer constitutive.

juIs76 [unc-25p::GFP + lin-15(+)] II. Unc. Maintain at 15C. Synthetic Lethality at 25C.

juIs76 [unc-25p::GFP + lin-15(+)] II.

Maintain at 15C. Synthetic Lethality at 25C. Unc; almost paralyzed. Growth slow.

otIs117 [unc-33p::GFP + unc-4(+)] IV. Maintain at 15C. Temperature-sensitive dauer constitutive. Pan-neuronal GFP.

Maintain at 15C. Synthetic Lethality at 25C.

Maintain at 15C. Synthetic Lethality at 25C.

Maintain at 15C. Synthetic Lethality at 25C.

Derived by out-crossing parental strain OH15262 an additional six times to N2. Out-crossed strain AML318 seems healthier than parental strain when maintaining long-term under normal conditions (AML observed an increase in male and sterile progeny in parental strain in successive generations.) 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. Reference: Yemini E, et al. Cell. 2021 Jan 7;184(1):272-288.e11. PMID: 33378642.

wtfIs491 [inx-1p::twk-18(gf)::mCherry + unc-122p::RFP]. AIB(-) activated potassium channel. Expression of twk-18 gain-of-function mutant in AIB neurons causes permanent inhibition. RFP expression in coelomocytes. Reference: Chen KS, et al. Olfactory learning alters navigation strategies and behavioral variability in C. elegans. ArXiv, Feb 23:arXiv:2311.07117v2. PMID: 38013890.

Heterozygotes are WT and segregate WT (heterozygotes), Unc-4 worms which are strong Egl (ty4 homozygotes), and paralyzed Dpy Uncs (mnC1 homozygotes).