Pageman analysis of microarray data in response to abiotic stress. For each abiotic stress experiment in rice and Arabidopsis, the significant fold-changes for the entire set of differentially expressed genes were analysed using the PageMan tool. Statistical analysis of over-represented functional categories was carried out using the Fisher method. Functional categories that did not show significant changes were collapsed for display. Statistical significances are represented by a false colour heat map (up, red; down, blue) where a z-score of 1.96 represents a p-value of 0.05.