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Manure and soil samples were collected on day 0 before and after manure application on six farms in North Carolina, and sequential soil samples were recollected on days 7, 14, and 21 from the same plots. All environmental samples were processed for\n            <jats:named-content content-type=\"genus-species\">Salmonella<\/jats:named-content>\n            , and their plasmid contents were further characterized. A total of 14 isolates including\n            <jats:named-content content-type=\"genus-species\">Salmonella enterica<\/jats:named-content>\n            serotypes Johannesburg (\n            <jats:italic>n<\/jats:italic>\n            = 2), Ohio (\n            <jats:italic>n<\/jats:italic>\n            = 2), Rissen (\n            <jats:italic>n<\/jats:italic>\n            = 1), Typhimurium var5\u2212 (\n            <jats:italic>n<\/jats:italic>\n            = 5), Worthington (\n            <jats:italic>n<\/jats:italic>\n            = 3), and 4,12:i:\u2212 (\n            <jats:italic>n<\/jats:italic>\n            = 1), representing different farms, were selected for plasmid analysis. Antimicrobial susceptibility testing was done by broth microdilution against a panel of 14 antimicrobials on the 14 confirmed transconjugants after conjugation assays. The plasmids were isolated by modified alkaline lysis, and PCRs were performed on purified plasmid DNA to identify the AMR determinants and the plasmid replicon types. The plasmids were sequenced for further analysis and to compare profiles and create phylogenetic trees. A class 1 integron with an ANT(2\u2033)-Ia-\n            <jats:italic>aadA2<\/jats:italic>\n            cassette was detected in the 50-kb IncN plasmids identified in\n            <jats:italic>S<\/jats:italic>\n            . Worthington isolates. We identified 100-kb and 90-kb IncI1 plasmids in\n            <jats:italic>S<\/jats:italic>\n            . Johannesburg and\n            <jats:italic>S<\/jats:italic>\n            . Rissen isolates carrying the\n            <jats:italic>bla<\/jats:italic>\n            <jats:sub>CMY-2<\/jats:sub>\n            and\n            <jats:italic>tet<\/jats:italic>\n            (A) genes, respectively. An identical 95-kb IncF plasmid was widely disseminated among the different serotypes and across different farms. Our study provides evidence on the importance of horizontal dissemination of resistance determinants through plasmids of multiple\n            <jats:named-content content-type=\"genus-species\">Salmonella<\/jats:named-content>\n            serotypes distributed across commercial swine farms after manure application.\n          <\/jats:p>\n          <jats:p>\n            <jats:bold>IMPORTANCE<\/jats:bold>\n            The horizontal gene transfer of antimicrobial resistance (AMR) determinants located on plasmids is considered to be the main reason for the rapid proliferation and spread of drug resistance. The deposition of manure generated in swine production systems into the environment is identified as a potential source of AMR dissemination. In this study, AMR gene-carrying plasmids were detected in multiple\n            <jats:named-content content-type=\"genus-species\">Salmonella<\/jats:named-content>\n            serotypes across different commercial swine farms in North Carolina. The plasmid profiles were characterized based on\n            <jats:named-content content-type=\"genus-species\">Salmonella<\/jats:named-content>\n            serotype donors and incompatibility (Inc) groups. We found that different Inc plasmids showed evidence of AMR gene transfer in multiple\n            <jats:named-content content-type=\"genus-species\">Salmonella<\/jats:named-content>\n            serotypes. We detected an identical 95-kb plasmid that was widely distributed across swine farms in North Carolina. These conjugable resistance plasmids were able to persist on land after swine manure application. Our study provides strong evidence of AMR determinant dissemination present in plasmids of multiple\n            <jats:named-content content-type=\"genus-species\">Salmonella<\/jats:named-content>\n            serotypes in the environment after manure application.\n          <\/jats:p>","DOI":"10.1128\/aem.01503-17","type":"journal-article","created":{"date-parts":[[2017,8,12]],"date-time":"2017-08-12T01:00:40Z","timestamp":1502499640000},"update-policy":"https:\/\/doi.org\/10.1128\/asmj-crossmark-policy-page","source":"Crossref","is-referenced-by-count":51,"title":["Horizontal Dissemination of Antimicrobial Resistance Determinants in Multiple Salmonella Serotypes following Isolation from the Commercial Swine Operation Environment after Manure Application"],"prefix":"10.1128","volume":"83","author":[{"given":"Suchawan","family":"Pornsukarom","sequence":"first","affiliation":[{"name":"Department of Population Health and Pathobiology, College of Veterinary Medicine, North Carolina State University, Raleigh, North Carolina, USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-3787-9939","authenticated-orcid":false,"given":"Siddhartha","family":"Thakur","sequence":"additional","affiliation":[{"name":"Department of Population Health and Pathobiology, College of Veterinary Medicine, North Carolina State University, Raleigh, North Carolina, USA"},{"name":"Comparative Medicine Institute, North Carolina State University, Raleigh, North Carolina, USA"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"235","reference":[{"key":"e_1_3_2_2_2","doi-asserted-by":"publisher","DOI":"10.1146\/annurev-food-041715-033251"},{"key":"e_1_3_2_3_2","volume-title":"Global action plan on antimicrobial resistance","author":"World Health Organization (WHO)","year":"2015","unstructured":"World Health Organization (WHO). 2015. 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