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The demographic history of European populations has been well characterized, yet East Asian populations of\n                    <jats:styled-content style=\"fixed-case\">\n                      <jats:italic>C. bursa\u2010pastoris<\/jats:italic>\n                    <\/jats:styled-content>\n                    are poorly explored. Here, we use RADseq data to investigate the genetic diversity and population structure of 187\n                    <jats:styled-content style=\"fixed-case\">\n                      <jats:italic>C. bursa\u2010pastoris<\/jats:italic>\n                    <\/jats:styled-content>\n                    accessions across the Korean Peninsula, a region of mountainous terrain and extensive ecological heterogeneity. In contrast to European populations, which show high rates of selfing, we found that Korean populations exhibited signs of outcrossing, potentially resulting from high population density influenced by human activities embedded in Korean history and culture. Widespread genetic admixture contributed to the overall low genetic differentiation, as multiple introgression events into Korea may have occurred, followed by extensive gene flow among populations mediated by human activities. The genetic differentiation that was detected was largely correlated with geographic and climatic divergence. Taken together, our findings highlight the potential for range expansions to be accompanied by shifts in mating systems and suggest that Korean\n                    <jats:styled-content style=\"fixed-case\">\n                      <jats:italic>C. bursa\u2010pastoris<\/jats:italic>\n                    <\/jats:styled-content>\n                    populations provide an ecological model for studying the transition from selfing to outcrossing.\n                  <\/jats:p>","DOI":"10.1002\/ece3.73980","type":"journal-article","created":{"date-parts":[[2026,8,19]],"date-time":"2026-08-19T06:29:15Z","timestamp":1787120955000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Local Genetic Signatures of a Global Weed: Population Structure and Ecological Drivers of\n                    <scp>\n                      <i>Capsella bursa\u2010pastoris<\/i>\n                    <\/scp>\n                    Diversity in the Korean Peninsula"],"prefix":"10.1002","volume":"16","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-6134-9172","authenticated-orcid":false,"given":"Byungwook","family":"Choi","sequence":"first","affiliation":[{"name":"Department of Plant and Microbial Biology University of Minnesota  St. Paul Minnesota USA"},{"name":"Department of Environmental and Energy Engineering Gwangju Institute of Science and Technology  Gwangju Republic of Korea"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-8059-7334","authenticated-orcid":false,"given":"Eunsuk","family":"Kim","sequence":"additional","affiliation":[{"name":"Department of Environmental and Energy Engineering Gwangju Institute of Science and Technology  Gwangju Republic of Korea"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-1975-610X","authenticated-orcid":false,"given":"Peter","family":"Tiffin","sequence":"additional","affiliation":[{"name":"Department of Plant and Microbial Biology University of Minnesota  St. Paul Minnesota USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-1645-6021","authenticated-orcid":false,"given":"Sang\u2010Tae","family":"Kim","sequence":"additional","affiliation":[{"name":"Department of Medical and Biological Sciences The Catholic University of Korea  Bucheon Republic of Korea"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2026,8,18]]},"reference":[{"key":"e_1_2_10_2_1","doi-asserted-by":"publisher","DOI":"10.1111\/2041\u2010210X.12158"},{"key":"e_1_2_10_3_1","doi-asserted-by":"publisher","DOI":"10.1146\/annurev\u2010ecolsys\u2010110421\u2010102855"},{"key":"e_1_2_10_4_1","doi-asserted-by":"publisher","DOI":"10.1139\/cjps\u20102021\u20100059"},{"key":"e_1_2_10_5_1","doi-asserted-by":"publisher","DOI":"10.1038\/s41437\u2010021\u201000434\u20109"},{"key":"e_1_2_10_6_1","doi-asserted-by":"publisher","DOI":"10.2307\/2405656"},{"key":"e_1_2_10_7_1","doi-asserted-by":"publisher","DOI":"10.1371\/journal.pgen.1000890"},{"key":"e_1_2_10_8_1","doi-asserted-by":"publisher","DOI":"10.1038\/s41598\u2010017\u201005794\u2010z"},{"key":"e_1_2_10_9_1","doi-asserted-by":"publisher","DOI":"10.1111\/jeb.13169"},{"key":"e_1_2_10_10_1","doi-asserted-by":"publisher","DOI":"10.1111\/j.1365\u2010294X.2005.02743.x"},{"key":"e_1_2_10_11_1","doi-asserted-by":"publisher","DOI":"10.20307\/nps.2018.24.2.132"},{"key":"e_1_2_10_12_1","doi-asserted-by":"publisher","DOI":"10.1146\/annurev.es.18.110187.001321"},{"key":"e_1_2_10_13_1","unstructured":"Chessel D. 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