Worms are slow growing, with reduced brood size and become sterile at elevated temperatures. CED-1::GFP used to detect apoptotic cells in germline. Reference: Zeller P, et al. Nat Genet. 2016 Nov;48(11):1385-1395. doi: 10.1038/ng.3672. PMID: 27668659.

bcIs39 [lim-7p::ced-1::GFP and lin-15(+)] V.  Temperature sensitive induction of germ cell apoptosis at 25 C. Large number of germ cells are decorated by CED-1::GFP within 48 h. Activates CED-3-mediated cleavage of IFG-1, visualized by western blot (Contreras, V., et al, 2011).

bcIs39 [lim-7p::ced-1::GFP and lin-15(+)] V.  Temperature-sensitive germ cell apoptosis leading to infertility at 25 C. Apoptosing germ cells are decorated by CED-1::GFP in the gonad. Loss of p170 form of IFG-1 (but not p130 IFG-1) confirmed by Western blot. Escaping eggs are fertilized and embryonic lethal. Mos-1 transposon insertion previously described as ifg-1::mos-1(cxP9279) II; confirmed by triple primer PCR with 5’-ACCAAACTGGGCAAACAAAG-3’, 5’-GCTCAATTCGCGCCAAACTATG-3’, and 5’-CTTCCTGAAATTTGGTTTAACAGT-3’. Homozygous ifg-1::mos yields only 444 bp product. Outcrossed heterozygotes yield both 353 bp (wild type ifg-1) and 444 bp products.

bcIs39 [lim-7p::ced-1::GFP and lin-15(+)] V.  Resistant to germ cell apoptosis. No apoptosing germ cells are decorated by CED-1::GFP in the gonad. ced-3 deletion confirmed by genomic triple primer PCR with 5’-AGTTCACCGTGACAGCGTCTCTTC-3’, 5’-CGATTACGACTTGAACTGTATCCGA-3’, and 5’-TCTTGTGTAAACGAGATTTGCAATG-3’. Homozygous ced-3(n2452) yields only 1,110 bp product. Outcrossed heterozygotes yield both 1,411 bp (wild type ced-3) and 1,110 bp products. [NOTE: (11-05-2019) A user has reported this strain exhibits temperature-sensitive sterility when raised at 25C.]

bcIs39 [lim-7p::ced-1::GFP and lin-15(+)] V.  Resistant to germ cell apoptosis. No apoptosing germ cells are decorated by CED-1::GFP in the gonad. Genetically identical to KX87 (Contreras, V., et al, 2011).

bcIs39 [lim-7p::ced-1::GFP + lin-15(+)]. Expression of functional CED-1::GFP fusion protein in the sheath cells.

hqSi11 [lim-7p::TIR1::mRuby::unc-54 3' UTR + Cbr-unc-119(+)] II. Degron and mNeonGreen tag inserted at the 3' end of the endogenous daf-2 gene locus by CRISPR/Cas9 engineering. hqSi11 was generated by replacing the eft-3 promoter of the ieSi57 insertion (oxTi179 site) with the lim-7 promoter using CRISPR/Cas9. This strain can be used for auxin-inducible degradation (AID) of DAF-2 protein in the gonadal sheath. hqSi11 previously known as hq378. Reference: Zhang Y, et al. BioRxiv. 2021 Aug 2. 2007.2031.454567. https://doi.org/10.1101/2021.07.31.454567.

hqSi11 [lim-7p::TIR1::mRuby::unc-54 3' UTR + Cbr-unc-119(+)] II. Maintain at 15C. GFP tag and degron inserted at the 3' end of the endogenous daf-16 gene locus by CRISPR/Cas9 engineering. hqSi11 was generated by replacing the eft-3 promoter of the ieSi57 insertion (oxTi179 site) with the lim-7 promoter using CRISPR/Cas9. This strain can be used for auxin-inducible degradation (AID) of DAF-16 protein in the gonadal sheath. hqSi11 previously known as hq378. Reference: Zhang Y, et al. BioRxiv. 2021 Aug 2. 2007.2031.454567. https://doi.org/10.1101/2021.07.31.454567.

maIs385 [lim-7p::mir-34 + Cbr-unc-119(+)] I. DTC migration defects. Reference: Burke SL, Hammell M, Ambros V. Genetics. 2015 Jun 15.

maIs388 [lim-7p::mir-83 + Cbr-unc-119(+)] II. DTC migration defects. Reference: Burke SL, Hammell M, Ambros V. Genetics. 2015 Jun 15.

opIs110 [lim-7p::YFP::actin + unc-119(+)] IV. YFP::ACT-5 expressed in somatic sheath cells, marks pre-disc corpses.