Transfer of "Pseudomonas riboflavina" (Foster 1944), a Gram-Negative, Motile Rod with Long-Chain 3-Hydroxy Fatty Acids, to Devosia riboflavina gen. nov., sp. nov., nom. rev.

The taxonomic position of "Pseudomonas riboflavina" was studied by 16S rRNA gene sequencing and chemotaxonomic methods. This organism is a gram-negative, strictly aerobic rod and has a DNA guanine-plus-cytosine content of 61.4 mol%; the major isoprenoid quinone is ubiquinone 10, and the unusual cellular fatty acids 3-hydroxytetracosenoic acid (3-OH 24:1) and 3-hydroxyhexacosenoic acid (3-OH 26:1) are the major 3-hydroxy cellular fatty acids. A phylogenetic analysis based on 16S rRNA sequences revealed that "P. riboflavina" IFO 13584T (T = type strain) occupies an independent position in the alpha subclass of the Proteobacteria. On the basis of our data, we propose that "P. riboflavina" IFO 13584T should be transferred to the genus Devosia gen. nov. as Devosia riboflavina sp. nov., nom. rev.