Figure 2

Comparisons of genes between poplar and other species. Poplar xylem unigenes and gene models (nucleotide or protein sequences) were blasted with blastn (A) and tblastn (or blastp) (B) against gene indices, gene models or scaffolds of other plant species. Percentage of hits is presented on the Y-axis at three E-value cut-offs (0, 1e-50 and 1e-5). Seven databases used for blasts are presented on the X-axis, including pine (PGI) (1) and spruce gene indices (SGI) (2), Eucalyptus scaffolds (3), and gene models of Arabidopsis (4), rice (5), Selaginella (6) and moss (7), respectively. These databases include four plant groups: conifers (1-2), angiosperms (woody 3 and herbaceous 4-5), Selaginella (6) and moss (7).