Meta-analysis of Arabidopsis poly(A) factor gene expression in response to biotic stress and different light treatments. Normalized expression data for the NASC Arabidopsis biotic stress series (Additional file 1) were extracted and plotted as shown. The legends indicate the correspondence between the plots and the respective Arabidopsis gene identification designation. The numerical key for each array experiment is given along the X-axis. While the full list of the agents can be found in Additional file 1, here is a brief list: 1–16, control and Pseudomonas syringae infection; 17–22, control and Phytophthora infection; 23–36, control and elicitors treatment; 37–52, dark and different light treatment.