Nature, 411, 948–950 (2001).

In Figs 1 and 3 the tree branches were very faint. The corrected figures are shown below.

Figure 1: Unrooted 16S rDNA tree of Proteobacteria (purple bacteria).
figure 1

The figure shows the phylogenetic relationships between the different rhizobial genera—as represented by type species in bold—including the new rhizobial Burkholderia sp. strains. α, β, δ, γ and ε represent the different subdivisions of the Proteobacteria. The tree was constructed by using the neighbour-joining method and adapted from ref. 5. 16S rDNA sequences of published bacteria are available in GenBank. 16S rDNA from Burkholderia sp. STM 678 and Burkholderia sp. STM 815 are given in the text (AJ 302311 and AJ 302312).

Figure 3: Unrooted NodA tree showing the close phylogenetic relationship between the NodA of strain STM678 and those of α-rhizobia.
figure 2

The tree is based on full-length sequences, and constructed by using the neighbour-joining method. Bootstrap values (% from 1,000 replications) are indicated. NodA sequences of published rhizobia are available in GenBank. NodA from Burkholderia sp. STM 678 is given in the text (AJ 302321). AAzorhizobium, B, Bradyrhizobium. M, Mesorhizobium. Me, Methylobacterium. R, Rhizobium. S, Sinorhizobium.