Figure 1.

Evolutionary relationships of the phosphate-solubilizing bacteria (PSB) isolated in the present study and related strains in the NCBI database based on 16S rRNA gene sequences. The percentages of replicate trees in which the associated taxa clustered together in the bootstrap test (1000 replicates) are shown next to the branches. The tree is drawn to scale with branch lengths similar to those of the evolutionary distances used to infer the phylogenetic tree. Bacterial strains in boldface indicate PSB included in the present study. Accession numbers are provided in parentheses.