{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,5,19]],"date-time":"2026-05-19T16:30:29Z","timestamp":1779208229178,"version":"3.51.4"},"reference-count":51,"publisher":"Microbiology Society","issue":"3","license":[{"start":{"date-parts":[[2025,3,5]],"date-time":"2025-03-05T00:00:00Z","timestamp":1741132800000},"content-version":"unspecified","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[2025,3,5]]},"abstract":"<jats:p>\n                  <jats:italic>Staphylococcus pseudintermedius<\/jats:italic> is the foremost cause of opportunistic canine skin and mucosal infections worldwide. Multidrug-resistant (MDR) and methicillin-resistant <jats:italic>Staphylococcus pseudintermedius<\/jats:italic> (MRSP) lineages have disseminated globally in the last decade and present significant treatment challenges. However, little is known regarding the factors that contribute to the success of MDR lineages. In this study, we compared the genome sequence of 110 UK isolates of <jats:italic>S. pseudintermedius<\/jats:italic> with 2166 genomes of <jats:italic>S. pseudintermedius<\/jats:italic> populations from different continents. A novel core genome multi-locus typing scheme was generated to allow large-scale, rapid and detailed analysis of <jats:italic>S. pseudintermedius<\/jats:italic> phylogenies and was used to show that the <jats:italic>S. pseudintermedius<\/jats:italic> population structure is broadly segregated into an MDR population and a non-MDR population. MRSP lineages are predicted to encode certain resistance genes either chromosomally or on plasmids, and this is associated with their MLST sequence type. A comparison of lineages most frequently implicated in disease, ST-45 and ST-71, with the phylogenetically related ST-496 lineage that has a comparatively low disease rate, revealed that ST-45 and ST-71 genomes encode distinct combinations of phage-defence systems and concurrently encode a high number of intact prophages. In contrast, ST-496 genomes encode a wider array of phage defence systems and lack intact and complete prophages. These findings indicate that MRSP lineages have significant structural genomic differences and that prophage integration and differential antiviral systems correlate with the emergence of successful genotypes.<\/jats:p>","DOI":"10.1099\/mgen.0.001369","type":"journal-article","created":{"date-parts":[[2025,3,5]],"date-time":"2025-03-05T17:18:10Z","timestamp":1741195090000},"source":"Crossref","is-referenced-by-count":4,"title":["Global phylogenomic analysis of Staphylococcus pseudintermedius reveals genomic and prophage diversity in multidrug-resistant lineages"],"prefix":"10.1099","volume":"11","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-7708-2169","authenticated-orcid":false,"given":"Lucy F.","family":"Grist","sequence":"first","affiliation":[{"name":"Department of Comparative Biomedical Sciences, School of Veterinary Medicine, Faculty of Health and Medical Sciences, University of Surrey, Guildford GU2 7A, UK"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0009-0003-0822-3786","authenticated-orcid":false,"given":"Alice","family":"Brown","sequence":"additional","affiliation":[{"name":"Department of Life Sciences, Imperial College London, London SW7 2AZ, UK"},{"name":"MRC London Institute of Medical Sciences, Du Cane Road, London W12 0NN, UK"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Noel","family":"Fitzpatrick","sequence":"additional","affiliation":[{"name":"Department of Veterinary Clinical Sciences, School of Veterinary Medicine, Faculty of Health and Medical Sciences, University of Surrey, Guildford GU2 7AL, UK"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-1197-2123","authenticated-orcid":false,"given":"Giuseppina","family":"Mariano","sequence":"additional","affiliation":[{"name":"Discipline of Microbes, Infection and Immunity, School of Biosciences, Faculty of Health and Medical Sciences, University of Surrey, Guildford GU2 7XH, UK"},{"name":"School of Infection and Immunity, University of Glasgow, Glasgow, UK"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-5861-613X","authenticated-orcid":false,"given":"Roberto M.","family":"La Ragione","sequence":"additional","affiliation":[{"name":"Discipline of Microbes, Infection and Immunity, School of Biosciences, Faculty of Health and Medical Sciences, University of Surrey, Guildford GU2 7XH, UK"},{"name":"Department of Comparative Biomedical Sciences, School of Veterinary Medicine, Faculty of Health and Medical Sciences, University of Surrey, Guildford GU2 7A, UK"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-0203-1305","authenticated-orcid":false,"given":"Arnoud H. 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