{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,29]],"date-time":"2026-09-29T07:09:29Z","timestamp":1790665769563,"version":"4.1.0"},"reference-count":24,"publisher":"Springer Science and Business Media LLC","issue":"1","content-domain":{"domain":["link.springer.com"],"crossmark-restriction":false},"short-container-title":["BMC Genomics"],"published-print":{"date-parts":[[2008,12]]},"abstract":"<jats:title>Abstract<\/jats:title>\n          <jats:sec>\n            <jats:title>Background<\/jats:title>\n            <jats:p>\n              <jats:italic>Burkholderia pseudomallei<\/jats:italic> is a soil-dwelling saprophyte and the cause of melioidosis. Horizontal gene transfer contributes to the genetic diversity of this pathogen and may be an important determinant of virulence potential. The genome contains genomic island (GI) regions that encode a broad array of functions. Although there is some evidence for the variable distribution of genomic islands in <jats:italic>B. pseudomallei<\/jats:italic> isolates, little is known about the extent of variation between related strains or their association with disease or environmental survival.<\/jats:p>\n          <\/jats:sec>\n          <jats:sec>\n            <jats:title>Results<\/jats:title>\n            <jats:p>Five islands from <jats:italic>B. pseudomallei<\/jats:italic> strain K96243 were chosen as representatives of different types of genomic islands present in this strain, and their presence investigated in other <jats:italic>B. pseudomallei<\/jats:italic>. <jats:italic>In silico<\/jats:italic> analysis of 10 <jats:italic>B. pseudomallei<\/jats:italic> genome sequences provided evidence for the variable presence of these regions, together with micro-evolutionary changes that generate GI diversity. The diversity of GIs in 186 isolates from NE Thailand (83 environmental and 103 clinical isolates) was investigated using multiplex PCR screening. The proportion of all isolates positive by PCR ranged from 12% for a prophage-like island (GI 9), to 76% for a metabolic island (GI 16). The presence of each of the five GIs did not differ between environmental and disease-associated isolates (p &gt; 0.05 for all five islands). The cumulative number of GIs per isolate for the 186 isolates ranged from 0 to 5 (median 2, IQR 1 to 3). The distribution of cumulative GI number did not differ between environmental and disease-associated isolates (p = 0.27). The presence of GIs was defined for the three largest clones in this collection (each defined as a single sequence type, ST, by multilocus sequence typing); these were ST 70 (n = 15 isolates), ST 54 (n = 11), and ST 167 (n = 9). The rapid loss and\/or acquisition of gene islands was observed within individual clones. Comparisons were drawn between isolates obtained from the environment and from patients with melioidosis in order to examine the role of genomic islands in virulence and clinical associations. There was no reproducible association between the individual or cumulative presence of five GIs and a range of clinical features in 103 patients with melioidosis.<\/jats:p>\n          <\/jats:sec>\n          <jats:sec>\n            <jats:title>Conclusion<\/jats:title>\n            <jats:p>Horizontal gene transfer of mobile genetic elements can rapidly alter the gene repertoire of <jats:italic>B. pseudomallei<\/jats:italic>. This study confirms the utility of a range of approaches in defining the presence and significance of genomic variation in natural populations of <jats:italic>B. pseudomallei<\/jats:italic>.<\/jats:p>\n          <\/jats:sec>","DOI":"10.1186\/1471-2164-9-190","type":"journal-article","created":{"date-parts":[[2008,4,25]],"date-time":"2008-04-25T18:13:51Z","timestamp":1209147231000},"update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":71,"title":["Burkholderia pseudomallei genome plasticity associated with genomic island variation"],"prefix":"10.1186","volume":"9","author":[{"given":"Sarinna","family":"Tumapa","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Matthew TG","family":"Holden","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Mongkol","family":"Vesaratchavest","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Vanaporn","family":"Wuthiekanun","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Direk","family":"Limmathurotsakul","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Wirongrong","family":"Chierakul","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Edward J","family":"Feil","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Bart J","family":"Currie","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Nicholas PJ","family":"Day","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"William C","family":"Nierman","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Sharon J","family":"Peacock","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"297","published-online":{"date-parts":[[2008,4,25]]},"reference":[{"issue":"4","key":"1383_CR1","doi-asserted-by":"publisher","first-page":"981","DOI":"10.1086\/318116","volume":"31","author":"BJ Currie","year":"2000","unstructured":"Currie BJ, Fisher DA, Howard DM, Burrow JNC, Lo D, Selva-Nayagam S, Anstey NM, Huffam SE, Snelling PL, Marks PJ, Stephens DP, Lum GD, Jacups SP, Krause VL: Endemic melioidosis in tropical northern Australia: A 10-year prospective study and review of the literature. 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