Tissue enrichment in whole stem compared to stem peels of genes with higher expression in whole stem.

The fold-enrichment between the tissue sample with the highest transcript abundance and the lowest transcript abundance was calculated for each gene. This calculation was done separately for whole stem (WS) and stem peel (SP) samples. Fold enrichment is shown in a linear scale and is the mean of 3 measurements from 3 biologically independent samples. The values not shown are genes that were not detected in those tissues. The confidence interval (CI) was calculated by using one standard deviation of the difference of the dCT between the two tissues compared. The significance of the difference between the points in the stem in stem peel and whole stem is shown in Table S2.