Comparison of gene expression levels between the two libraries.

<p>For comparing gene expression levels between the two libraries, each library was normalised to 1 million tags. Red dots represent transcripts more prevalent in the infected leaf library, green dots show those present at a lower frequency in the infected tissue and blue dots indicate transcripts that did not change significantly. The parameters FDR <0.001 and log2 ratio ≥ 1 were used as the threshold to judge the significance of gene expression difference.