Pseudomonas tohonis sp. nov., isolated from the skin of a patient with burn wounds in Japan.
2021
Strain TUM18999T was isolated from the skin of a patient with burn wounds in Japan. The strain was successfully cultured at 20-42 °C (optimum, 30-35 °C) in 1.0-4.0% NaCl (w/v) and at pH 5.5-9.5, optimum pH 5.5-8.5. The phylogenetic tree reconstructed using 16S rRNA, gyrB, rpoB and rpoD gene sequences indicated that strain TUM18999T is closely related to Pseudomonas otitidis MCC10330T. Although the partial 16S rRNA gene sequence (1412 bp) of TUM18999T exhibits high similarity to those of Pseudomonas alcaligenes NBRC 14159T (99.08 %) and Pseudomonas otitidis MCC10330T (98.51 %), multi-locus sequence analysis using 16S rRNA, gyrB, rpoB and rpoD genes reveals a clear distinction between TUM18999T and other Pseudomonas species. In addition, an average nucleotide identity >90 % was not observed in the P. aeruginosa group. Moreover, TUM18999T and P. otitidis can be distinguished based on the minimum inhibitory concentration for carbapenem. Meanwhile, the cellular fatty acids are enriched with C18 : 1 ω7c/C18 : 1 ω6c (34.35 %), C16 : 1 ω7c/C16 : 1 ω6c (24.22 %), C16 : 0 (19.79 %) and C12 : 0 (8.25 %). Based on this evidence, strain TUM18999T can be defined as representing a novel Pseudomonas species, with the proposed name Pseudomonas tohonis sp. nov. The type strain is TUM18999T (GTC 22698T=NCTC 14580T).
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