Figure 2: Recent duplication and the expression of bamboo CesA and Csl genes.

(a) Phylogenetic neighbor-joining tree of the CesA genes. Red branches indicate a recent duplication after speciation. Filled circles indicate the tissues where the gene had high expression. Clades A, B, C, E and G correspond to the phylogenetic tree in Supplementary Figure 12a. The divergence time of the corresponding duplication is shown in blue. The scale bar represents the bootstrap percentage of each branch. (b) Phylogenic tree of the Csl genes. The clustered CslA, CslC, CslD, CslE and CslF genes were derived from the phylogenic tree in Supplementary Figure 12b. Filled circles indicate the tissues where the gene had high expression. The divergence time of recent duplications is shown in blue beside the corresponding branch in red. (c) History of recent duplication for the CesA and Csl genes. Each bracket indicates a duplication event of the CesA or Csl genes. Divergence time is shown along a bar ranging from 0 to 50 million years ago. Filled red circles indicate genes highly expressed in the shoot.