Phylogenetic tree based on the 16S ribosomal DNA sequence data showing the relationships of strains C157 and C190 with the most closely related bacteria identified in the GenBank database. Included in the analysis are Actinoplanes utahensis, Aeromicroblum fastidiosum, N. simplex, N. plantarum, Nocardioides albus, N. jensenii, S. lividans, and R. globerulus as an outlier. The bar indicates 0.01 substitutions per nucleotide position.