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Fig. 2 | BMC Plant Biology

Fig. 2

From: Metabolome analysis of 20 taxonomically related benzylisoquinoline alkaloid-producing plants

Fig. 2

Two-dimensional principal component analysis (PCA) of metabolite quantities obtained using NMR-based profiling. Results are presented as scores (a) and loadings (b) plots. The percent variance accounted for by each principal component (PC) is indicated. For the scores plot, each dot represents a one of four replicates analyzed per plant species. Areas enclosed by 95 % confidence ellipses, containing dots of the same color, define statistically significant class separations [34]. Species abbreviations are defined in Table 1. Loadings representing individual metabolites are shown as black dots (b). Metabolite names are indicated for loadings contributing more to variance. A complete listing of loadings data is found in Additional file 16

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