Spindle Orientation in Follicle Cells Does Not Depend on aPKC
(A–C) The apical polarity determinants aPKC (A, red), Crumbs-GFP (B, red), and Bazooka (C, red), disappear from the apical cortex of mitotic follicle cells, although Dlg (green) remains along the lateral cortex. Dlg-YFP is shown in (A), and anti-Dlg staining is shown in (B) and (C). pH3, shown in blue, marks mitotic cells.
(D) aPKCpsu14 mutant follicle cell clones have normal epithelial architecture. The aPKCpsu14 mutant cells are marked by the loss of GFP (green).
(E) Metaphase spindles are not misoriented in aPKCpsu14 mutant follicle cell clones (marked by the absence of GFP).
(F) Cumulative plot of metaphase spindle angles in aPKCpsu141 mutant follicle cells.
(G) An apkcts/apkck06403 egg chamber at 18° showing a cyst encapsulation defect, as well as normal tissue.
(H) Metaphase spindles are correctly oriented in an apkcts/apkck06403 egg chamber at 18°.
(I) Cumulative plot of metaphase spindle angles in apkcts/apkck06403 follicle cells at 18°.