Expression of betacyanin biosynthetic genes in response to salt stress.

Relative expression levels2 were determined in leaves, stems and roots of A. hypochondriacus plants, with contrasting pigmentation patterns, subjected to salt stress. Induced or repressed levels of expression (i.e. relative expression ≥1.5 or ≤0.5) are shown in bold text and italics, respectively.1The genotypes examined in this study were Ah cv. Nutrisol (AhNut; with predominantly betacyanic leaves), Ah India Red (AhIR; with predominantly betacyanic stems) and Ah India Green (AhIG; with all tissues acyanic).2The fold change in the expression of the target genes was calculated using the 2−ΔΔCt method according to [76].