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Int J Syst Evol Microbiol. 2020 Jan 10. doi: 10.1099/ijsem.0.003928. [Epub ahead of print]

Pseudomonas carnis sp. nov., isolated from meat.

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Department of Safety and Quality of Meat, Max Rubner-Institut, E.-C.-Baumann-Strasse 20, D-95326 Kulmbach, Germany.
Center for Biotechnology - CeBiTec, Bielefeld University, Universitätsstraße 27, D-33615 Bielefeld, Germany.
Bioinformatics and Systems Biology, Justus-Liebig University Gießen, Ludwigstr. 23, D-35390 Gießen, Germany.
VFG Labor GmbH & Co. KG, Nordfeldstr. 19, D-33775 Versmold, Germany.


During investigations of spoilage-associated meat microbiota, Pseudomonas isolates were found in two different laboratories showing highest similarities to Pseudomonas lactis DSM 29167T, Pseudomonas paralactis DSM 29164T and Pseudomonas azotoformans DSM 18862T based on 16S rRNA gene sequence comparisons. Phylogenetic analysis of the complete rpo B gene sequences of isolates B4-1T and SpeckC indicated a separate branch with 99.0 and 99.1 % identity, respectively, to their closest relative (P. lactis DSM 29167T). Further phenotypic and chemotaxonomic characterizations, as well as average nucleotide identity (ANIb) values obtained from the draft genomes, revealed that these isolates could be considered as representing a novel species, with ANIb values of around 94 and 90 % with their closest relatives P. lactis and P. paralactis. Other related species showed ANIb values below 90 %, including Pseudomonas libanensis DSM 17149T, Pseudomonas synxantha DSM 18928T, Pseudomonas orientalis DSM 17489T, Pseudomonas veronii DSM 11331T and P. azotoformans DSM 18862T. Genome-to-genome distance calculations between B4-1T and its closest relative, P. lactis DSM 29167T, showed 62.6 % relatedness. The G+C contents of B4-1T and SpeckC were 59.8 and 59.9 mol%, respectively. The major cellular lipids were phosphatidylethanolamine, phosphatidylglycerol and diphosphatidylglycerol; the major quinone was Q9. Based on these data, the new species Pseudomonas carnis sp. nov. is proposed, the type strain is B4-1T (=DSM 107652T=LMG 30892T); a second strain is SpeckC (=DSM 107651=LMG 30893).


Pseudomonas; meat; rpoB


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