Figure 1

Phylogenetic analysis of 45 homologous proteins of Si transporters identified in tomato and Si transporters available in other species. The tree was constructed using the maximum likelihood method (MLM) with 1000 bootstraps. Each of the five different clades is represented by a specific color and named as I, II, III, IV and V. Proteins from tomato are marked with red solid circles. Proteins from other species are marked with hollow circles. Hv stands for barley (Hordeum vulgare L.), Ta stands for wheat (Triticum aestivum L.), Zm stands for corn (Zea mays L.), Sb stands for sorghum (Sorghum bicolor L.), Cm stands for pumpkin (Cucurbita moschata L.), St stands for potato (Solanum tuberosum L.), Os stands for rice (Oryza sativa L.), Cs stands for cucumber (Cucumis sativus L.).