Representation of genomic loci of TLP genes in the genome of Populus trichocarpa 'Nisqually-1'. (A), Position of TLP genes on scaffold 1. Transposable element coverage of the TLP cluster is presented below scaffold 1 (dark grey: LTR-retrotransposon; light grey: DNA transposon). (B), position of TLP genes on scaffolds 2 to 21. Black lines: scaffolds; triangles: TLP genes; triangles in rectangles: TLP-kinase genes. Grey and white triangles respectively correspond to regulated and non-regulated genes in rust-infected poplar leaves as shown in Figure 1.