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Published online 2011 December 2. doi: 10.1186/gb-2011-12-12-r119

Figure 3

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Comparative evolution of the starch gene network between rice and wheat. (a) Twenty-nine enzyme-encoding genes involved in the starch biosynthesis network are listed at the left and 170 genes (named according to their accession numbers) are shown. Expression data from oligo-array experiments performed in rice and wheat are displayed using a classical colored scale in which yellow illustrates the absence of expression and red the observed highest level of expression (6.5 for rice, 14.5 for wheat as normalized intensity). At the right are illustrated orthologous RNA-seq clusters from one up to three homoeologous copies (black scares). (b) The starch gene network is schematically represented with black dots representing synthesized substrate and the number of gene-encoding enzymes is shown in circles. The pre-WGD (top) and post-WGD (bottom) networks illustrate the impact of paleoduplication where no impact (yellow), gain of an additional enzyme-encoding gene (blue) and more than one additional enzyme-encoding gene (red) are shown.

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