A novel type strain, designated SDB 2975 (=CECT 9737=DSM 105892), of the novel species Staphylococcus debuckii sp. nov. isolated from bovine milk is described. The novel species belongs to the genus Staphylococcus and showed resistance to tetracycline and was oxidase- and coagulase-negative, catalase-positive, and Gram-stain-positive. Phylogenetic relationships of Staphylococcus debuckii SDB 2975 to other staphylococcal species were inferred from 16S rRNA gene and whole-genome-based phylogenetic reconstruction. The 16S rRNA gene comparisons showed that the strain is closely related to Staphylococcus condimenti (99.73 %), Staphylococcus piscifermentans (99.66 %), Staphylococcus carnosus (99.59 %) and Staphylococcus simulans (98.03 %). Average nucleotide identity (ANI) values between S.taphylococcus debuckii SDB 2975 and its closely related Staphylococcus species were 83.96, 94.5, 84.03 and 78.09 %, respectively, and digital DNA-DNA hybridization (dDDH) values were 27.70, 58.02, 27.70 and 22.00 %, respectively. The genome of Staphylococcus debuckii SDB 2975 was sequenced with PacBio and Illumina technologies and is 2 691 850 bp long, has a G+C content of 36.6 mol% and contains 2678 genes and 80 RNAs, including six copies of each5S rRNA, 16S rRNA and 23S rRNA genes. Biochemical profiling and a newly developed PCR assay enabled differentiation of Staphylococcus debuckii SDB 2975 and three other SDB strains from its closest staphylococcal species. Differentiation was also achieved by matrix-assisted laser desorption/ionization time-of-flight mass spectrometry (MALDI-TOF). Genes unique to Staphylococcus debuckii were identified and a PCR-based assay was developed to differentiate Staphylococcus debuckii from other staphylococcal species. In conclusion, the results of phylogenetic analysis along with the ANI values <95 %, and dDDH values <70 % from closely related species along with the phenotypic and biochemical characteristics and specific MALDI-TOF profiles demonstrated that Staphylococcus debuckii SDB 2975 represents a novel species within the genus Staphylococcus, named Staphylococcus debuckii sp. nov. (SDB 2975=CECT 9737=DSM 105892).
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http://dx.doi.org/10.1099/ijsem.0.003457 | DOI Listing |
Front Cell Infect Microbiol
January 2025
VBIC, INSERM U1047, University of Montpellier, Montpellier, France.
Introduction: This study identifies as a new coagulase-negative staphylococcal species isolated from diabetic foot osteomyelitis (DFOM) and provides an in-depth analysis of its pathogenic and virulence profile, as well as demonstrating its potential to cause infection.
Methods: The NSD001 strain was examined for its planktonic growth, biofilm production, and phagocytosis rates in murine macrophages compared to NSA739. Additionally, persistence and replication within human osteoblasts were investigated, while the zebrafish embryo model was employed to assess virulence.
Food Technol Biotechnol
September 2023
Department of Food Engineering, School of Engineering, King Mongkut's Institute of Technology Ladkrabang, Ladkrabang, 10520 Bangkok, Thailand.
Research Background: One of the issues in the production of fish sauce is the legal constraints on the concentration of histamine produced by bacteria during fermentation because it causes allergic reactions in humans. The goal of this study is therefore to eliminate histamine from the final product after fermentation to enhance the quality of fish sauce for consumer safety, manufacturer exportability and domestic sales.
Experimental Approach: The bacteria that grow in the histamine medium were isolated from the salted fish.
J Dairy Sci
November 2023
M-team and Mastitis and Milk Quality Research Unit, Department of Internal Medicine, Reproduction, and Population Medicine, Faculty of Veterinary Medicine, Ghent University, 9820 Merelbeke, Belgium.
Non-aureus staphylococci and the closely related mammaliicoccal species (NASM) are the most common causes of bovine subclinical mastitis on modern dairy farms and are highly prevalent in bulk-tank milk. The purpose of this study was to determine the distribution of NASM in both composite cow milk (CCM) and bulk-tank milk (BTM) samples collected in tandem in commercial Flemish dairy herds and to estimate the origin of the different (subgroups of) NASM species present in BTM by applying strain typing (random amplification of polymorphic DNA or random amplified DNA [RAPD]). A single cross-sectional sampling was performed over 5 herds that volunteered to participate in the study.
View Article and Find Full Text PDFInt J Syst Evol Microbiol
August 2019
Department of Production Animal Health, Faculty of Veterinary Medicine, University of Calgary, 3330 Hospital Drive NW, Calgary AB, Canada.
A novel type strain, designated SDB 2975 (=CECT 9737=DSM 105892), of the novel species Staphylococcus debuckii sp. nov. isolated from bovine milk is described.
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