he25 is temperature sensitive. At 25C: Heterozygotes are WT and segregate WT, DpySteriles (qC1 homozygotes) and Sterile Uncs which have a head region that is broader than the tail region and have no postembryonic cell divisions. At 15C: Heterozygotes are WT and segregate WT, Dpy Steriles (qC1 homozygotes) and cdk-1 homozygotes which are slightly smaller than WT, complete nearly all cell divisions, are sterile and have less germ cells than N2 (sperm are present but no oocytes). Previously called ncc-1(he25).

Temperature sensitive Unc.

This strain carries endogenously tagged dynein heavy chain (mCherry::dhc-1). Reference: Schmidt et al., J Cell Biol. 2017 Sep 4; 216(9): 2777–2793. doi: 10.1083/jcb.201607038

he314[pie-1p::GLO-ePDZ::mCherry::smu-1::tbb-2 3'UTR] II. e259[eft-3p::PH::eGFP::LOV::tbb-2 3'UTR]) IV. Superficially wild-type. CRISPR/Cas9 was used to create insertion alleles he314 and he259 insertions into N2 background at sites of known MosSCI insertions ttTi5605 and cxTi10816, respectively. ePDZ–LOV system transgenes allow use of blue light to control protein heterodimerization, in this case, membrane recruitment of ePDZ-tagged proteins of interest. Germline-optimized cytosolic ePDZ::mCherry-tagged SMU-1 (GLO-ePDZ::mCherry::SMU-1), and membrane-bound LOV2 domain fused to a pleckstrin-homology domain (PH::eGFP::LOV). Reference: Fielmich LE, et al. eLife 2018 Aug 15;7:e38198. doi: 10.7554/eLife.38198.

utdSi51[mex-5p::tomm-20(aa 1-55)::halotag::lov::tbb-2 3’UTR] II. Maintain at 23C and protect from light. Strain is sickly, seems to grow best and lay more eggs at 23C. Upon stimulation with 488nm light, the LOV-ePDZ optogenetic system will recruit mitochondria to the dynein heavy chain in the worm embryo. Embryonic cell divisions can be stopped by if mitochondrial recruitment is stimulated in early development. Room light can also induce mitochondria re-localization and cause infertility; store this strain in the dark. Reference: Fan X, et al. G3 (accepted).