Academic Journal

Recombination, mobile genetic elements, and genetic transfer contribute to the adaptation of Streptococcus uberis causing mastitis.

Λεπτομέρειες βιβλιογραφικής εγγραφής
Τίτλος: Recombination, mobile genetic elements, and genetic transfer contribute to the adaptation of Streptococcus uberis causing mastitis.
Συγγραφείς: Srithanasuwan A; Infectious Disease Epidemiology, Wageningen University, Droevendaalsesteeg 1, 6708PB, Wageningen, The Netherlands.; School of Veterinary Medicine, Faculty of Veterinary Medicine, Chiang Mai University, Chiang Mai, 50100, Thailand., Zou Y; Infectious Disease Epidemiology, Wageningen University, Droevendaalsesteeg 1, 6708PB, Wageningen, The Netherlands., Zadoks RN; Sydney School of Veterinary Science, Faculty of Science, University of Sydney, Camden, NSW, 2570, Australia., Suriyasathaporn W; School of Veterinary Medicine, Faculty of Veterinary Medicine, Chiang Mai University, Chiang Mai, 50100, Thailand. suriyasathaporn.witaya.y3@f.mail.nagoya-u.ac.jp.; Research Center of Producing and Development of Products and Innovations for Animal Health and Production, Chiang Mai University, Chiang Mai, 50100, Thailand. suriyasathaporn.witaya.y3@f.mail.nagoya-u.ac.jp.; Cambodia Campus, Asian Satellite Campuses Institute, Nagoya University, Nagoya, 464-8601, Japan. suriyasathaporn.witaya.y3@f.mail.nagoya-u.ac.jp., Schukken YH; Infectious Disease Epidemiology, Wageningen University, Droevendaalsesteeg 1, 6708PB, Wageningen, The Netherlands. ynte.schukken@wur.nl.; GD Animal Health, PO Box 9, 7400 AA, Deventer, The Netherlands. ynte.schukken@wur.nl.; Department of Population Health Sciences, Utrecht University, 3584 CL, Utrecht, The Netherlands. ynte.schukken@wur.nl.
Πηγή: Veterinary research [Vet Res] 2026 Jul 07; Vol. 57 (1). Date of Electronic Publication: 2026 Jul 07.
Τύπος έκδοσης: Journal Article
Γλώσσα: English
Στοιχεία περιοδικού: Publisher: BioMed Central Country of Publication: England NLM ID: 9309551 Publication Model: Electronic Cited Medium: Internet ISSN: 1297-9716 (Electronic) Linking ISSN: 09284249 NLM ISO Abbreviation: Vet Res Subsets: MEDLINE
Imprint Name(s): Publication: 2011- : London : BioMed Central
Original Publication: Paris : Editions Scientifiques Elsevier ; INRA, c1993-
Ιατρικοί όροι (MeSH): Streptococcus*/genetics , Streptococcus*/physiology , Mastitis, Bovine*/microbiology , Streptococcal Infections*/veterinary , Streptococcal Infections*/microbiology , Interspersed Repetitive Sequences* , Recombination, Genetic* , Gene Transfer, Horizontal*, Adaptation, Physiological/genetics ; Animals ; Cattle ; Genome, Bacterial ; Female ; Thailand
Περίληψη: Streptococcus uberis is a major cause of bovine mastitis. However, the genomic mechanisms that facilitate adaptation of the pathogen within different host-associated environment or selection pressures remain poorly understood. This study analyzed whole-genome sequence data from three Thai dairy herds to investigate the contributions of recombination and mobile genetic elements (MGEs) to S. uberis evolution and adaptation. Among the 138 S. uberis genomes, 42 core genome sequence types (cgSTs) were identified, along with frequent detection of MGEs such as plasmid-associated genes (81.1% of isolates), prophages (67.4% of isolates), and insertion sequences (26.1% of isolates). The isolates from farm A exhibited the longest recombined fragment size, but with extremely low recombination frequency and recombination-to-mutation ratio. By contrast, the isolates from farm B, which had the highest prevalence of antimicrobial resistance (AMR) gene, showed a high recombination-to-mutation ratio (R/θ = 4.42) and more frequently contained MGEs associated with AMR genes. Finally, isolates from farm C shared a single core genome and AMR profile but harbored diverse prophages. Several prophages shared high sequence similarity (>99%) with phages infecting other bacterial genera, suggesting that ecological overlap between bacterial species may facilitate cross-genus genetic exchange, highlighting the influence of microbial ecology on the evolution of S. uberis. Collectively, our results illustrate the variety of mechanisms and genetic elements that contribute to the adaptive evolution of S. uberis in dairy farming environments.
(© 2026. The Author(s).)
Competing Interests: Declarations. Ethics approval and consent to participate: All S. uberis genome sequences used in this study were derived from a previous study approved by the Chiang Mai University Animal Care and Use Committee (Ref. no. S26/2562). No new animal sampling was conducted. Consent for publication: Not applicable. Competing interests: The authors declare no competing interests.
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Contributed Indexing: Keywords: Streptococcus uberis; antimicrobial resistance; mobile genetic elements; prophage; recombinant event
SCR Organism: Streptococcus uberis
Entry Date(s): Date Created: 20260708 Date Completed: 20260708 Latest Revision: 20260813
Update Code: 20260814
PubMed Central ID: PMC13343983
DOI: 10.1186/s13567-026-01795-x
PMID: 42415201
Βάση Δεδομένων: MEDLINE