Sequencing results of four mutants for NcbZIP19. A Genome organization of the bZIP19 genes of A. thaliana (At) and N. caerulescens (Nc). Untranslated regions are indicated with red boxes, exons are indicated with yellow boxes, introns are indicated with black horizontal lines. The EMS-induced mutations are indicated by red (non-synonymous) and black (synonymous) arrows below the first exon. B Point mutations confirmed by sequencing. The two non-synonymous substations are shown in the red circles. Two synonymous substitutions are shown in black circles.