Inactivation of TGA1 and/or TGA4 corrects pny and pny pnf defects in inflorescence architecture and flowering. Shown are 6-week-old plants grown under continuous light. A, A wild-type inflorescence apex. B, A pny mutant with clustered siliques (arrows). C, A tga1 pny mutant showing partial rescue of clustering (arrow). D, A tga4 pny mutant showing little or no rescue of clustering (arrows). E, A tga1 tga4 pny mutant showing no clusters, similar to wild typeF, A wild-type flowering plant. G, A nonflowering pny pnf mutant. H, A tga1 pny pnf mutant showing restored flowering and partial rescue of clustered siliques (arrow). I, A tga4 pny pnf mutant showing restored flowering and little or no rescue of clustered siliques (arrow). J, A tga1 tga4 pny pnf mutant showing restored flowering and no clusters, similar to wild type. Scale bars = 1.5 cm.