Phylogenetic analysis of eIFiso4G1 and eIFiso4G2 isoforms in land plants. A phylogenetic tree of eIFiso4G1 and eIFiso4G2 isoforms was constructed using the maximum-likelihood method. The tree with the highest log likelihood is shown. The tree is drawn to scale, with branch lengths measured in the number of substitutions per site. Numbers on each branch denote percentages of bootstrap support. eIFiso4G isoforms from the non-vascular species, P. patens, and the early vascular species, S. moellendorffii, were used to root the tree.