The genotype effect. (A) Joint genotype effect scores from the targeted variable model, and corresponding loadings for: (B) transcripts, (C) proteins and (D) metabolites. Many significant compounds are highlighted in their respective plots and discussed in the text. The directions of the “red colored” arrow heads and tails represent increasingly high levels of transcripts/proteins/metabolites in the transgenic hipI-SOD plants relative to WT plants, and vice versa, respectively. The variation in the WT is too small to be visible on this score plot.