FIG 4.

Statistical parsimony network of the translation elongation factor 1α sequences types, constructed in TCS v. 1.21 (38). Sequence types are represented by circles, with the number given to each sequence type in the center of the circle, and the size of the circle is proportional to the number of isolates with that sequence type. The shading represents the percentage of isolates in each sequence type from different substrates (black, soil; dark gray, roots; light gray, crowns; white, stems). The inferred ancestral sequence types are indicated with stars. Branch lengths are not to scale.