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Devosia equisanguinis sp. nov., isolated from horse blood

Abstract : A Gram-stain-negative, aerobic, non-endospore-forming organism isolated from horse blood was studied for its taxonomic allocation. On the basis of 16S rRNA gene sequence similarity comparisons, strain M6-77 T grouped within the genus Devosia and was most closely related to Devosia elaeis (97.6 %) and Devosia indica (97.55 %). The 16S rRNA gene sequence similarity to type strains of other Devosia species was below 97.5 %. The average nucleotide identity and digital DNA–DNA hybridization values between the M6-77 T genome assembly and those of the closest relative Devosia type strains were <85 and <25 %, respectively. Strain M6-77 T grew optimally at 25–37 °C (range: 10–36 °C), at a pH range of pH 6.5–10.5 and in the presence of up to 3 % (w/v) NaCl. The fatty acid profile from whole-cell hydrolysates supported the allocation of the strain to the genus Devosia . Major fatty acids were C 18 : 1 ω 7 c, 11-methyl C 18 : 1 ω 7 c and C 16 : 0 . The quinone system consisted exclusively of ubiquinone Q-10. The polar lipid profile was composed of the major lipids diphosphatidylglycerol, phosphatidylglycerol and three unidentified glycolipids. In the polyamine pattern, putrescine was predominant and spermidine was detected in moderate amounts. The diamino acid of the peptidoglycan was meso- diaminopimelic acid. In addition, the results of physiological and biochemical tests also allowed phenotypic differentiation of strain M6-77 T from the closely related species. Hence, M6-77 T represents a new species of the genus Devosia , for which we propose the name Devosia equisanguinis sp. nov., with M6-77 T (=CIP 111628 T =LMG 30659 T =CCM 8868 T ) as the type strain.
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Submitted on : Thursday, September 29, 2022 - 10:49:31 AM
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Peter Kämpfer, Hans-Jürgen Busse, Dominique Clermont, Alexis Criscuolo, Stefanie Glaeser. Devosia equisanguinis sp. nov., isolated from horse blood. International Journal of Systematic and Evolutionary Microbiology, 2021, 71 (11), ⟨10.1099/ijsem.0.005090⟩. ⟨pasteur-03791350⟩



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