Fig. 4. Rescue of DE-cadherin expression. Expression of indicated FOI
proteins in foi-mutant embryos. (A) Graph indicates the
percentage of gonads with higher levels of DE-cadherin expression than
foi-mutant controls. (B-G) Confocal images of representative
stage 15-16 gonads, immunolabeled with
-DCAD2 (DE-cadherin). Insets
show positions of germ cells (
-VAS, blue) relative to DE-cadherin
(
-DCAD2, red). (B) Wild type, (C) foi mutant, (D-G)
foi mutants with the indicated HA-FOI proteins expressed. Wild type
(B), HA-FOI (D), T557P (F) and Y646A (G) gonads express DE-cadherin, while
foi20.71 (C) and H554A (E) gonads do not. DE-cadherin
expression in gonads expressing T557P (F) is more diffuse than in wild type
(B). DE-cadherin in neighboring tracheal branches is labeled (tr). Perimeter
of gonad is outlined. Scale bars: 10 µm.