Patterns of gene expressions on primary metabolic networks. ( A ) Glycolysis was reconstructed based on transcripts of enzymes (in EC numbers) mapped to KEGG. Variation among the samples was indicated by stunt arrows, with up-pointing ones showing increasing gene expression levels (> 2 fold). Red arrows refer to the petal samples relative to leaf and green ones referring to leaf gene expression relative to the mean of petals. Green and red arrows in parallel are for cases where alternative forms of transcripts were found for leaf and flower, respectively. Approximation sign (≈) shows within 2-fold variation among the samples. Blue thin arrows display known functions of enzymes in glycolysis and the black long arrow shows the bridge to the biosynthesis of malonyl-CoA. ( B ) Amino acid syntheses were similarly rebuilt to show gene expression patterns leading to the synthesis of p-coumaroyl CoA in phenylpropanoid synthesis (partial). The enzyme in black rectangle refers to the case where the transcript was identified via individual searching of the Arabidopsis homolog (AEE29352) and absent in the initial annotation. Enzymes in brown rectangles are transcripts associated with phenylpropanoid synthesis.