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. 2015 Mar 4;66(7):2067–2077. doi: 10.1093/jxb/erv018

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© The Author 2015. Published by Oxford University Press on behalf of the Society for Experimental Biology.

This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/3.0/), which permits unrestricted reuse, distribution, and reproduction in any medium, provided the original work is properly cited.

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Fig. 1. — A principal component analysis (PCA) biplot for the complete data set demonstrated a distinct clustering of WT from the executer mutants (ex1 and ex2) in the two light treatments (NL and HL). Principal components 1 (PC1) and 2 (PC2)—where PC1 indicates the direction of the highest variability followed by PC2 with diminishing variability orthogonal to PC1—accounted for 51% and 11% of the study variance, respectively. PCA suggested a modification of the soluble chloroplast proteome in Arabidopsis upon light treatment. The genotype caused a large shift in the PC1 dimension to more positive values and significantly reduced the differences between NL and HL samples in PC2.