Figure 2.

Evolutionary relationships among orthologous proteins of MdKAI2. Using the amino acid sequence of MdKAI2 as a template, orthologous proteins were aligned via the GenBank database, and 129 highly consistent orthologous genes were selected for analysis of their evolutionary relationships with those of Malus domestica and A. thaliana. The highlighted colors represent different groups. The species from which orthologous proteins originated are marked at the end of the branch. The symbol indicates the genus to which the species belongs (only the genus containing two or more orthologous proteins is marked). MdKAI2 is marked with a blue arrow. Evolutionary relationships were inferred via the neighbor−joining method, and the evolutionary distances were computed via the Poisson correction method.