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Figure 2 | BMC Plant Biology

Figure 2

From: The response and recovery of the Arabidopsis thalianatranscriptome to phosphate starvation

Figure 2

Initial assessment of data and quality control. Subfigure (a) and (b) summarizes all gene expression data from 18 micro-array’s by making use of a principal components analysis (PCA). (a) The amount of variation/information captured (blue) by each principle component (PC) is combined to obtain the total variation (black). (b) A plot of the two most biologically informative PCs, PC2 and PC3. Root (red) and shoot (green) organs are shown to separate along the x-axis (PC2), whereas samples for mock (diamond), treatment (square), and recovery (triangle) separate along the y-axis (PC3). (c) Dot plot of log2 fold-change values for loci captured by micro-array (x-axis) and tiling-array (y-axis) technologies. The root response (top-left, blue) and recovery (top-right, red) each have R2 values above 0.7, whereas the shoot response (bottom-left, green) and recovery (bottom-right, purple) each have R2 values above 0.65.

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