Fig. 3. DiaCA induces planar-polarized cell shape changes in the
epidermis. Drosophila embryos: anterior leftwards, genotypes and
antigens indicated. (A-C) Stage 16. Deep segmental grooves (arrows).
(D-M) Dorsal closure. (D) Wild-type groove cells (arrows).
(E-F''') DiaCAxen-GAL4. DE-cad D/V enrichment
and F-actin accumulation (arrows). (G) Myosin in elongating wild-type
epidermis. (H-I'') Wild-type groove cells. Myosin, DE-cad and
EGFP::Dia (e22c-GAL4) D/V enrichment (arrows). (J,J')
DiaCA D/V enrichment. (K-M)
DiaCAxprd-GAL4. (K'',K''') Region indicated by
yellow bracket in K'. DE-Cad and Myosin D/V enrichment (arrows). (L)
Movie frame showing Arm::GFP. (L,M) DiaCA-expressing cells
delimited by double-headed arrows. (N,O) Quantitation of planar
polarization in indicated cell types. Error bars indicate s.d. (P)
Wild-type elongating and groove cells. Scale bars: 20 µm.