aatIs3 [unc-17p::YC3.60]. Expression of YC3.60 in VA, DA, VB, DB, AS, VC, and other head and tail neurons. Reference: Haspel et al. J Neurosci. 2010 Aug 18;30(33):11151-6.

Defective phototaxis (light avoidance). To identify lite-1(xu7) homozygotes, place day 1 adults on a freshly seeded NGM plate with a thin lawn of OP50. Deliver 2 second pulses of short wavelength light (UV, purple, blue) from an arc lamp to the head of a worm that is slowly moving forward through a 5-10x objective lens in conjunction with a room lens under a fluorescent dissection scope. Manually move the plate so only the anterior of the worm appears in the field of view. Wild-type worms respond by initiating reversals while homozygous mutants do not. Maintain under normal conditions. Reference: Liu J, et al (2010) Nature Neurosci 13:715-22.

No obvious altered phenotype. Deletion removes 1.9 kb from within pes-1, including more than half of the forkhead domain encoding region.

F11A6.1a. Slow-growing, slightly small and slightly Unc in the head region. Attribution: This strain was provided by the C. elegans Reverse Genetics Core Facility at the University of British Columbia, which is part of the international C. elegans Gene Knockout Consortium, which should be acknowledged in any publications resulting from its use. Paper_evidence WBPaper00041807

ZK1151.1b. Homozygous lethal 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 ok817 homozygotes (variable arrest stage; larvae often Dpy with lumpy tail and lumpy or notched head; adults often explode or disintegrate). Homozygous hT2[bli-4 let-? qIs48] inviable. Note: qIs48 has been observed to recombine off hT2, typically leaving behind a functional homozygous viable hT2 with Bli-4 phenotype. Pick WT GFP and check for correct segregation of progeny to maintain. Attribution: This strain was provided by the C. elegans Reverse Genetics Core Facility at the University of British Columbia, which is part of the international C. elegans Gene Knockout Consortium, which should be acknowledged in any publications resulting from its use. Paper_evidence WBPaper00041807

gfEx1 [hmt-1p::GFP + unc-119(+)]. Maintain under normal conditions. GFP expression detected in Intestinal cells, terminal pharyngeal bulb, coelomocytes, and head & tail neurons. Reference: Schwartz MS, et al., PLoS One. 2010 Mar 5;5(3):e9564.

oyIs14 [sra-6p::GFP + lin-15(+)]. sra-6p::GFP marks both PVQ neurons as well as the ASI and ASH neurons in the head. Reference: Ding C, et al. Elife. 2022 Mar 14;11:e73557. PMID: 35285800.

ccIs4595 [ceh-24::GFP + rol-6(su1006)]. wpEx482 [ceh-17::NLS::TagRFP + pha-1(+)]. Maintain at 25C to retain array. GFP expression in vulval muscles, m8, and set of neurons in the head. The four SIA neurons are marked with both GFP and RFP. Can be used to isolate SIA by FACS. Used by CeNGEN project for RNA-Seq (https://www.cengen.org/).

Probably null calreticulin. W28 amber. Slow growth (one day developmental delay). Nearly sterile if raised at 25C. Suppresses mec-4(d)-induced neurodegeneration. Bent-head.

Probably null W231opa. Probably null calreticulin - slow growth (one day developmental delay). Nearly sterile if reared at 25C. Suppresses mec-4(d)-induced neurodegeneration. Bent-head.

Point mutation C133Y. No easily detected phenotype, selected for suppression of mec-4(d)-induced degeneration caused by ectopic expression of mec-4(d)-induced neurodegeneration. Bent-head.

Point mutation in G102E. No easily detected phenotype, selected for suppression of mec-4(d)-induced degeneration caused by ectopic expression of mec-4(u231) in the ventral nerve cord. Bent-head.

iaIs25 [gcy-37p::GFP + unc-119(+)]. gcy-37::GFP is consistently expressed in AQR, PQR, URXL. and URXR neurons. Expression also observed in AVM and two unidentified neurons located in the head.

hpIs774 [twk-40p(short)::GCaMP6s::mNeptune]. hpEx4081 [rig-3p::LoxP::eBFP::Stop::LoxP::gtACR2::wCherry + twk-40p(short)::Cre + myo-2p::RFP]. Pick RFP+ (pharynx) to maintain. Transgenic animals are GFP and RFP positive in multiple neurons in the head, but strong RFP signals in AVA neurite. Superficially wild type. Activation of gtACR2 decreases AVA and AVB’s calcium signals. hpEx4081 can be maintained by picking animals with weak pharyngeal RFP signals (seems to be a common artifact of the Cre-LoxP system).

hpIs774 [twk-40p(short)::GCaMP6s::mNeptune]. hpEx4292 [pdf-1p::LoxP::eBFP::LoxP::gtACR2::Cherry + twk-40p(short)::Cre + lin-15(+)]. Pick non-Muv to maintain. Red and green fluorescence in multiple head neurons. Activation of gtACR2 reduces AVB signals but does not generate specific changes in AVA.

ljIs131 [myo-3p::GCaMP3::UrSL2::tagRFP-T]. hpEx4340 [nmr-1p::TeTx::wCherry + sra-11p::TeTx::wCherry + HygromycinR]. Animals carrying the array show additional red fluorescence in the head compared to those that have lost the array. Transgenic animals are severely Unc. RFP positive head neuron soma can be observed under V16 in older animals. Hygromycin can be used to select for hpEx4340 transgenic animals. Reference: Lu Y, et al. Curr Biol. 2022 Nov 7;32(21):4631-4644.e5. doi: 10.1016/j.cub.2022.09.002. PMID: 36182701.

ljIs131 [myo-3p::GCaMP3::UrSL2::tagRFP-T]. hpEx4343 [acr-5p::TeTx::wCherry + unc-4p::TeTx::wCherry + HygromycinR]. Pick animals with wCherry expression in ventral cord neurons to maintain hpEx4343. Animals carrying the array show additional red fluorescence in the head compared to those that have lost the array. Animals carrying hpEx4343 rest as coilers strongly biased towards ventral bend as L1 larvae and are severely Unc as adults. Coiling is somewhat suppressed in the ljIs131 background, but animals still exhibit an obvious bias towards ventral bend during movement. Hygromycin can be used to select for hpEx4343 transgenic animals. Reference: Lu Y, et al. Curr Biol. 2022 Nov 7;32(21):4631-4644.e5. doi: 10.1016/j.cub.2022.09.002. PMID: 36182701.

hpIs860 [twk-40p(short)::eGFP + myo-2p::wCherry]. Cytosolic GFP expression in AVA, AVE & AVB in the head, with the strongest signal in AVA. Additional fluorescent signal in RVG (SAB) and tail (DVA).

hpIs860 [twk-40p(short)::eGFP + myo-2p::wCherry]. twk-40 gain-of-function allele. Paralyzed, no backward movement upon head touch. Cytosolic GFP expression in AVA, AVE & AVB in the head, with the strongest signal in AVA. Additional fluorescent signal in RVG (SAB) and tail (DVA).

hpIs860 [twk-40p(short)::eGFP + myo-2p::wCherry]. Loopy movement with increased reversals. Cytosolic GFP expression in AVA, AVE & AVB in the head, with the strongest signal in AVA. Additional fluorescent signal in RVG (SAB) and tail (DVA).

hpEx4479 [npr-4p::snb-1::pHluorin + lin-15(+)]. Pick animals with green fluorescence in VNC to maintain. twk-40(bln336) is a gain-of-function allele. Paralyzed; no backward movement upon head touch. Synapse exocytosis marker for AVA. Transgenic animals exhibit punctate fluorescent signals along AVA neurites in the ventral cord, with weaker expression than in a wild-type background.

hpIs157 [glr-1p::YC3.60 + lin-15(+)]. Strong fluorescent marker for inter-neuron/head motor neuron Ca2+ imaging (FRET). Construct includes 5.3 kb glr-1 genomic promoter sequence upstream of the ATG start codon. Reference: Kawano T, et al. Neuron. 2011 Nov 17;72(4):572-86. PMID: 22099460

hpIs193 [nlf-1p::nlf-1::GFP + lin-15(+)]. GFP expression in head and tail neurons, as well as along ventral cord. Reference: Xie L, et al. Neuron. 2013 Mar 20;77(6):1069-82. PMID: 23522043

hpIs179 [sra-11p::D3cpv]. 2.8 kb sra-11 promoter sequence drives Cameleon (a genetically-induced calcium indicator) in AVB, AIA, and AIY head interneurons. Reference: Kawano T, et al. Neuron. 2011 Nov 17;72(4):572-86.

hpIs459 [unc-4p::GCaMP3::wCherry + lin-15(+)]. Strong GCaMP3 and wCherry expression in A-class motor neurons, as well as some head and tail neurons. It is recommended to use L4 stage animals when using this strain for calcium imaging and recording. Transgene expression becomes dimmer in many A-class neurons (except DA9), and is expression in VC neurons of adults. Reference: Gao S, et al. eLife, 7, e29915. https://doi.org/10.7554/eLife.29915 PMID: 29360035

hpIs587 [flp-14p::GCaMP6::wCherry + lin-15(+)]. CGaMP6 and wCherry expressed in RID, ALA, some head neurons, a mid-body neuron and a tail neuron. Reference: Lim et al., 2016. Elife 5. pii: e19887. doi: 10.7554/eLife.19887.

Increased angle of head bending. Maintain under normal conditions. Reference: Chen B, et al. J Neurosci. 2010 Dec 8;30(49):16651-61.

Pseudowild levamisole resistance. Head more resistant than body. Body resistance is temperature sensitive. WT phenotype.

Heterozygotes are WT and segregate WT, Unc-36, DpyUncLet and dead eggs. Lethal early larval. Maintain by picking WT. [This strain is acting strangely: it is throwing bent heads. 12/95]

Severe roundheaded Dpy. Almost inviable at 15C.

High Tc1 copy number, arose spontaneously in CB30. Him. Small, roundheaded.

Short, round-headed, especially in early larvae. Adults have slight rolling tendency. Males can mate.

vab-2(ju1) has embryonic lethality (12%) and notched heads (about 40%). vab-2(ju1) is considered a null allele (W30opal), and was previously called efn-1. Vab, embryonic ventral enclosure defects, male ray fusions.

vab-2(ju1) has embryonic lethality (12%) and notched heads (about 40%). vab-2(ju1) is considered a null allele (W30opal). pka efn-1.