Clustering of 874 differentially expressed Arabidopsis genes during host and non-host interactions with aphids.

Using one-way ANOVA in GeneSpring (Bonferroni correction, p-value ≤ 0.05), we identified 874 genes that display significant differential expression across different aphid treatments and timepoints. Hierarchical gene tree cluster analysis of these 874 genes using GeneSpring software identified three main clusters of genes (A, B and C) according to their expression profiles across all treatments and timepoints. Low gene expression levels are indicated by blue colour and high gene expression levels are indicated by red colour. Mc indicates Myzus cerasi, Mp indicates M. persicae and Rp indicates Rhopalosiphum padi.