FIG. 4.
Neighbor-joining distance matrix trees showing phylogenetic positions of uncultured 16S rDNA clones and PHBV-degrading denitrifying isolates from activated sludge. (a) Overall phylogenetic tree with Bacillus subtilis as an outgroup (scale = 0.1 Knuc). The quinone system is shown for each species incorporated and for the family Comamonadaceae. FCB, Flexibacter-Cytophaga-Bacteroides phylum (35). (b) Tree for members of the family Comamonadaceae with clone TSL-20 as an outgroup (scale = 0.02 Knuc).