Figure 7

The maximum likelihood phylogenetic relationships of root nodule rhizobial isolates obtained from Polhillia pallens (red) and Wiborgia obcordata (blue) based on Mesorhizobium-nifH sequence analysis. Test isolates are shown in bold. The significance of each branch is indicated by a bootstrap value = > 50 for each node (1000 replicates). The scale bar represents the number of changes per nucleotide position.