Fig. 3

Overlap study of up- and down-regulated genes in high root isoflavonoid cultivars. Venn diagrams depicting the number of (a, b) upregulated and (c, d) downregulated genes and their overlap in four pair-wise differential expression studies: AC Glengarry with AC Colombe, AC Glengarry with Conrad, Pagoda with AC Colombe, Pagoda with Conrad. Venn diagrams are based on differential expression analysis with ‘baseline’ p < 0.05 (a, c) or ‘high’ p < 0.001 (b, d) significance. Therefore, a core of 138 and 104 genes are consistently up- and down-regulated, respectively; the higher p-value reduces this list to 29 and 35 highly up- and down-regulated genes, respectively