Relative transcript abundance profiles of Populus MIPs. A heat map showing the transcript abundance of MIPs from all Populus subfamilies  is displayed using the program "Heatplus" . This heat map is produced using the expression data obtained from Populus eFP browser . The transcript abundance levels for the Populus MIPs were clustered using hierarchical clustering based on Pearson correlation coefficients. Each row corresponds to the normalized expression profile of a particular gene and their names are shown. Data obtained for nine different tissues for each gene are represented in columns. Symbols in the map represent as follows: ML -- mature leaf; YL -- young leaf; R -- root; DG -- dark-grown seedlings, etiolated; DL -- dark grown seedling etiolated and then exposed to light for 3 hrs; CL -- continuous light-grown seedling; FC -- female catkins; MC -- male catkins; X -- xylem. The data is normalized for each gene (row-normalized). The relative transcript accumulation is represented in a color code with green and red showing respectively the lower and higher levels of transcript accumulation.