MapMan visualization of genes involved in secondary metabolism. Pathway visualization was performed using our tobacco MapMan mapping . Blue denotes genes that are up-regulated and red genes that are down-regulated. The color scheme is shown in a rectangle using a log 2 scale. The most intense color therefore represents changes of 8-fold or more. A. Changes in root after 40 minutes. B. Changes in root after 4 hours. C. Changes in leaf after 40 minutes. D. Changes in leaf after 4 hours.