Correlation analysis of phenylpropanoid transcript and metabolite levels in tubers. Pearson correlation coefficients were calculated and used to generate a heatmap in which positive correlations are shown in red and negative correlations in blue. Most abbreviations are listed in Figure 1, Figure 3, Figure 6 and supplementary Table 1. PALe is PAL enzyme activity. Phn, total phenolics; Ant, total anthocyanins; Crt, total carotenoids; FRAP, antioxidant capacity; Glu, glucose, Suc, sucrose, GA, glycoalkaloids, Asc, ascorbate.
Payyavula et al. BMC Plant Biology 2012 12:39 doi:10.1186/1471-2229-12-39