Differential expression of the same genes in poplar leaves without infection (X-axis) and with infection by M. brunnea (Y-axis) (p < 0.001). The amount of gene expression is described by a log10 ratio of the read number of the gene to total read number. Red, blue and gray dots represent up- regulation, down-regulation, and no differential expression, respectively. This figure thus shows the number of genes significantly up- or down-regulated for M. brunnea and Populus during early stages of infection.
Zhu et al. BMC Genomics 2012 13:382 doi:10.1186/1471-2164-13-382