Maternal expression of sstndsRNA.shRNA.Scer\UAS.P\T.2 (under the simultaneous control of Scer\GAL4otu.T:Hsim\VP16, Scer\GAL4nos.PG and Scer\GAL4nos.UTR.T:Hsim\VP16) results in defects in early embryos. Pseudocleavage and cellularization furrows extend effectively into the embryo as in controls, but then the membranes undergo abnormal perpendicular expansion from the base of the furrows. The expanded membranes are coated with a cytoskeleton marker (pnut) and are seen to encroach into the space normally occupied by the nuclei, resulting in nuclei with indentations and bottle-like shapes.
Maternal expression of sstndsRNA.shRNA.Scer\UAS.P\T.2 under the control of Scer\GAL4mat.αTub67C.T:Hsim\VP16 results in an abnormal perpendicular membrane expansion the base of cellularization furrows in early embryos.
Scer\GAL4VP16.nanos.UTR, Scer\GAL4VP16.otu, Scer\GAL4nanos.PG, sstnRNAi.UASp.2 has furrow canal | maternal effect phenotype, suppressible | maternal effect by Rho172O/Rho1[+]
Scer\GAL4VP16.mat.αTub67C, sstnRNAi.UASp.2 has furrow canal | maternal effect phenotype, suppressible | maternal effect by stepUASp.EGFP/Scer\GAL4VP16.mat.αTub67C
Maternal heterozygosity for Rho172O substantially suppresses the abnormal perpendicular membrane expansion seen at the base of cellularization furrows in embryos derived from females expressing sstndsRNA.shRNA.Scer\UAS.P\T.2 under the simultaneous control of Scer\GAL4otu.T:Hsim\VP16, Scer\GAL4nos.PG and Scer\GAL4nos.UTR.T:Hsim\VP16.
Maternal co-expression of stepScer\UAS.P\T.T:Avic\GFP-EGFP completely suppresses the abnormal perpendicular membrane expansion seen at the base of cellularization furrows in embryos derived from females expressing sstndsRNA.shRNA.Scer\UAS.P\T.2 under the control of Scer\GAL4mat.αTub67C.T:Hsim\VP16.