Fig. 2

Hierarchical cluster analysis of 137 overlapping genes with greater than twofold changes in transcript abundance in Arabidopsis roots grown under Fe or Pi deficiency. a–f Indicate six representative sub-clusters. Complete clustering results of the 137 overlapping genes can be found in Additional file 2. Results shown are parts of the representative clusters from Additional file 2. Fold change in transcript abundance was defined as transcript level (reads per kilobase per million mapped reads) in Fe-deficient (Fe−) conditions divided by the level in normal conditions (Fe+), with three biological repeats. The same strategy was applied to Pi treatment. The color key indicates log2 transformed intensity; grey indicates that the number is missing