Fig. 2.

Phylogenetic tree based on the 16S rRNA gene sequence of P. putida SQ1, and sequences of other strains of the species P. putida, P. aeruginosa and P. fluorescens. The sequences were aligned with the CLUSTAL W program and the tree was built with the neighbor-joining algorithm integrated in the MEGA 6.0 program [31]. The phylogenetic tree was tested with 1000 bootstrap replicates; bootstrap values are shown at each node. The scale bar represents a 0.005 % nucleotide sequence divergence