scribΔPDZs.UASp.GFP/Scer\GAL469B partially rescues scribird15/scrib673
scribΔPDZs.UASp.GFP/Scer\GAL469B partially rescues scribdt6/scrib673
scribΔPDZs.UASp.GFP/Scer\GAL469B partially rescues scribj7B3/scrib673
Expression of scribΔPDZs.Scer\UAS.P\T.T:Avic\GFP under the control of Scer\GAL469B fully rescues the cell polarization phenotype but only partially rescues the disc overgrowth phenotype of scrib673/scribird15 transheterozygotes.
Co-expression of scribΔLRR.Scer\UAS.P\T.T:Myr6,T:Avic\GFP and scrib<up>ΔPDZs.Scer\UAS.P\T. T:Avic \GFP</up> under the control of Scer\GAL469B fails to rescue the cell polarization and disc overgrowth phenotypes of scrib673/scribird15 transheterozygotes, even when expression levels are increased via raising larvae at 29 oC.
Expression of scribΔPDZs.Scer\UAS.P\T.T:Avic\GFP under the control of Scer\GAL469B provides a more complete rescue of the size phenotype of scrib673/scribdt6 and scrib673/scribj7B3 transheterozygous discs compared to scrib null discs. Increasing the level of transgene expression via raising larvae at 29 oC further increases this rescue. Moreover, the apicolateral enhancement of septate junction markers is restored and cell shape is columnar rather than cuboidal in rescued scrib673/scribdt6 discs.