Fig. 2.

Phylogenetic tree of 16S rRNA genes based on the representative sequences of operational taxonomic units (OTUs) for potato-associated fluorescent pseudomonads (FPs). The tree was constructed using the neighbor-joining method. Scale represents 0.1 substitutions per site. Numbers at the nodes are the proportions of 1,000 bootstrap resamplings, and values <500 are not shown. Dominant OTUs showing a significantly biased distribution in terms of the numbers of isolates in the leaf compared with the root are indicated as L and R, respectively. LR indicates dominant OTUs with no significantly biased distribution to the leaf or root.