cuf2Δ and fzr1Δ cells show a defect in meiotic termination.

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cuf2Δ and fzr1Δ cells show a defect in meiotic termination. cuf2Δ and fzr1Δ cells show a defect in meiotic termination. (A) WT, cuf2Δ, fzr1Δ and cuf2Δ fzr1Δ cells were inoculated onto SPA and the number of nuclei generated in each zygote was counted after incubation at 30 °C for 24 h. Percentages were calculated on a diploid zygotic cell basis. The frequencies of cells with ⩾5 nuclei in fzr1Δ and cuf2Δfzr1Δ were not significantly different (P=0.79; Student's t‐test). Data are averages of three independent experiments. (B,C) Abnormal reassembly of spindle microtubules and additional nuclear divisions were observed after meiosis II in the cuf2Δ and fzr1Δ strains. Time‐lapse images of cells expressing GFP–Atb2 (microtubules; green), Htb1–CFP (histone H2B; blue) and Sfi1–mCherry (SPB; red) were filmed from meiosis II. (B) WT, (C) cuf2Δ. Movies corresponding to these panels are given in supplementary Movies S1 and S2 online. Images for fzr1Δ are shown in supplementary Fig S1A online. (D) Percentages of WT, cuf2Δ and fzr1Δ cells that formed ectopic spindles after meiosis II. Some cells also showed nuclear division. Cells were incubated on SPA at 25 °C for 24 h. (E,F) Additional duplication of SPBs and bipolar spindle formation in fzr1Δ cells. Time‐lapse images of cells expressing GFP‐Atb2, Mis6‐2mRFP (kinetochore; red) and Sid4‐2ECFP (SPB; blue) were filmed from meiosis II in WT (E) and fzr1Δ (F). Movies corresponding to these panels are given in supplementary Movies S3 and S4 online. Insets in (F), indicating a bipolar spindle with kinetochore alignment (a) and a monopolar spindle with SPB duplication (b), are magnified on the right. CFP, cyan fluorescent protein; ECFP, enhanced cyan fluorescent protein; GFP, green fluorescent protein; mRFP, monomeric red fluorescent protein; SPA, sporulation agar; SPB, spindle pole body; WT, wild type. Scale bar, 2 μm. Yuki Aoi et al. EMBO Rep. 2013;14:553-560 © as stated in the article, figure or figure legend