Fig. 6
Late-p1 is severely affected in itga8 and fras1 single and double mutants. (A-D) Tissue sections labeled with anti-P63 (epithelial nuclei) and sox9a:EGFP (cartilage) at 72 hpf, and oriented as shown in A′. The late-forming outpocketing of pouch-1 (late-p1) is indicated with a yellow dotted line in wild type. However, late-p1 is absent in (B) itga8b1161, (C) fras1b1048, and (D) fras1b1048;itga8b1161 double mutants, leaving a large gap (blue line) between endoderm and ectoderm. (E) Symplectic cartilage length and ectoderm-endoderm gap distance were measured on confocal stacks of whole-mounted embryos expressing sox9a:GFP and labeled with anti-P63. Each measurement pair is plotted as a dot, with 95% density ellipses shown for each genotype.
Reprinted from Developmental Biology, 416(1), Talbot, J.C., Nichols, J.T., Yan, Y.L., Leonard, I.F., BreMiller, R.A., Amacher, S.L., Postlethwait, J.H., Kimmel, C.B., Pharyngeal morphogenesis requires fras1-itga8- dependent epithelial-mesenchymal interaction, 136-48, Copyright (2016) with permission from Elsevier. Full text @ Dev. Biol.