Figure 1

Joined phylogenetic tree of NAC domain-containing proteins from Populus , Arabidopsis and rice. The deduced full-length amino acid sequences of 163 Populus, 105 Arabidopsis and 140 rice NAC genes were aligned by Clustal X 1.83 and the phylogenetic tree was constructed using MEGA 4.0 by the Neighbor-Joining (NJ) method with 1,000 bootstrap replicates. Each NAC subfamily was indicated in a specific color. Members of NAC protein from Populus were denoted in red.