Pseudomonas asiatica sp. nov., isolated from hospitalized patients in Japan and Myanmar.

A novel Gram-negative, aerobic, rod-shaped, non-spore-forming bacterial strain, RYU5, was isolated from a stool sample of an inpatient at a hospital in Okinawa, Japan. The optimal growth temperature of RYU5 was 30 °C. Phylogenetic analysis based on the sequences of housekeeping genes, including the 16S rRNA, rpoB, rpoD and gyrB genes, showed that RYU5 was a member of the Pseudomonas putida group and was located close to Pseudomonas monteilii and P. putida. Whole-genome comparisons, using average nucleotide identity and digital DNA-DNA hybridization, confirmed that strain RYU5 should be classified as a novel species of Pseudomonas. Phenotypic characterization tests showed that utilization of d-mannose, d-serine, l-arabinose and d-fructose could distinguish this strain from other related species of the genus Pseudomonas. Based on genetic and phenotypic evidence, strain RYU5 should be classified as a novel species, for which the name Pseudomonas asiatica sp. nov. is proposed. The type strain is RYU5 (=DSM 107182, =JCM 32716), with a DNA G+C content of 62.25 mol%.