Figure 1: Neighbour-Joining phylogenetic tree of 77 Sphingomonad genomes constructed from concatenated nucleotide sequences of universally conserved genes using the Mega 6 tool.

The numbers for the interior branches are bootstrap percentages. The scale bar indicates the number of substitutions per site. The four sphingan-producing strains are S. pituitosa, S. elodea ATCC 31461, Sphingomonas sp. ATCC31, and Sphingomonas sp. WG.