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Phylogenetic tree Syts. Phylogenetic relationship between plant Syts was calculated using the neighbor-joining algorithm. Bootstrap support values on the tree branch are indicated. Based on the phylogenetic tree, three clades (i.e. SYT1/2, SYT3, and SYT4/5) were defined. Genes from monocots and eudicots are in red and blue, respectively. The bar shows the rate of nucleotide substitution.
