Additional file 4.

Hierarchical clustering of differentially expressed genes identified in PepGMV-infected pepper plants. A total of 309 genes were identified (fold change of at least ± 2 and p-value ≤ 1.57e-06) and the ratio for each comparison (Symptomatic (S) vs. Mock (M); Recovered (R) vs. Mock; Recovered vs. Symptomatic) was used for the analysis. Clustering was performed using the Smooth correlation and average linkage clustering in GeneSpring GX 7.3.1 software (Agilent Technologies®). Green indicates down-regulated, red up-regulated and black unchanged values, as shown on the color scale at the side of the figure.

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Góngora-Castillo et al. Virology Journal 2012 9:295   doi:10.1186/1743-422X-9-295