{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,14]],"date-time":"2026-10-14T21:47:11Z","timestamp":1792014431622,"version":"4.4.0"},"reference-count":42,"publisher":"Microbiology Society","issue":"8","license":[{"start":{"date-parts":[[2026,8,10]],"date-time":"2026-08-10T00:00:00Z","timestamp":1786320000000},"content-version":"unspecified","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"LabEX IBEID","award":["ANR LBX-62 IBEID"],"award-info":[{"award-number":["ANR LBX-62 IBEID"]}]},{"name":"Institut Pasteur"},{"name":"Institut Pasteur"},{"name":"Sant\u00e9 publique France"},{"name":"Sant\u00e9 publique France"},{"DOI":"10.13039\/100020595","name":"National Science and Technology Council of Taiwan","doi-asserted-by":"crossref","award":["NSTC-114-2311-B-002-017"],"award-info":[{"award-number":["NSTC-114-2311-B-002-017"]}],"id":[{"id":"10.13039\/100020595","id-type":"DOI","asserted-by":"crossref"}]},{"name":"Institut Pasteur"},{"name":"Sant\u00e9 publique France"},{"name":"Sant\u00e9 publique France"},{"name":"Institut Pasteur"},{"name":"National Antarctic Scientific Center, State Targeted Scientific and Technical Program for Antarctic Research, Ukraine"},{"name":"LabEX IBEID","award":["ANR LBX-62 IBEID"],"award-info":[{"award-number":["ANR LBX-62 IBEID"]}]},{"name":"LabEX IBEID","award":["ANR LBX-62 IBEID"],"award-info":[{"award-number":["ANR LBX-62 IBEID"]}]},{"name":"LabEX IBEID","award":["ANR LBX-62 IBEID"],"award-info":[{"award-number":["ANR LBX-62 IBEID"]}]},{"name":"LabEX IBEID","award":["ANR LBX-62 IBEID"],"award-info":[{"award-number":["ANR LBX-62 IBEID"]}]},{"name":"Sant\u00e9 pubique France"},{"name":"Institut Pasteur"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[2026,8,10]]},"abstract":"<jats:p>\n                    Five Gram-negative strains, designated BI01\n                    <jats:sup>T<\/jats:sup>\n                    , BI02, BI1211, BI4D and BI67 isolated from the gut of the Antarctic endemic insect\n                    <jats:italic>Belgica antarctica<\/jats:italic>\n                    , were characterized by a polyphasic approach. Comparative 16S rRNA gene sequences indicated that the bacterial strains belonged to the genus\n                    <jats:italic>Yersinia<\/jats:italic>\n                    . A cgMLST-based phylogeny based on 500 concatenated core genes strongly supported a clade encompassing the 5 strains that was distinct from the currently recognized 27 species of the genus\n                    <jats:italic>Yersinia<\/jats:italic>\n                    . Average nucleotide identity (ANI) among the five strains consistently exceeded 99%, but comparisons to their closest relative,\n                    <jats:italic>Yersinia intermedia<\/jats:italic>\n                    , yielded an ANI of 93% and a digital DNA\u2013DNA hybridization value of 51.74. Metabolic profiling further differentiated the five strains from other closely related species within the genus\n                    <jats:italic>Yersinia<\/jats:italic>\n                    , notably with respect to\n                    <jats:sc>l<\/jats:sc>\n                    -fucose and potassium 2-ketogluconate fermentation, acetoin production and an absence of pyrazinamidase activity. Interestingly, three of the five strains exhibited resistance to\n                    <jats:italic>\u03b2<\/jats:italic>\n                    -lactams (amoxicillin and amoxicillin\/clavulanate) and first- and second-generation cephalosporins (cefalexin and cefoxitin) associated with the presence of the\n                    <jats:italic>ampC<\/jats:italic>\n                    gene, encoding a class C beta-lactamase, in their genome. None of the five isolates harbour the classic virulence determinants of enteropathogenic\n                    <jats:italic>Yersinia<\/jats:italic>\n                    . The DNA G+C content of the five strains is 47.8 mol%. Based on these results, they represent a novel species of the genus\n                    <jats:italic>Yersinia<\/jats:italic>\n                    , for which the name\n                    <jats:italic>Yersinia antarctica<\/jats:italic>\n                    sp. nov. is proposed. Notably, this represents the first\n                    <jats:italic>Yersinia<\/jats:italic>\n                    species reported from Antarctic terrestrial invertebrates. The type strain is BI01\n                    <jats:sup>T<\/jats:sup>\n                    (=CIP 112622\n                    <jats:sup>T<\/jats:sup>\n                    =DSM 121309\n                    <jats:sup>T<\/jats:sup>\n                    ). The distribution of this species is not limited to Antarctica, as few publicly available genomes indicate its presence in continental Russia and the Russian Arctic, with isolates recovered from rodents, polar bears and birds.\n                  <\/jats:p>","DOI":"10.1099\/ijsem.0.007268","type":"journal-article","created":{"date-parts":[[2026,8,10]],"date-time":"2026-08-10T15:15:52Z","timestamp":1786374952000},"source":"Crossref","is-referenced-by-count":1,"title":["Yersinia antarctica sp. nov., isolated from an Antarctic insect \u2013 expanding the genus into polar ecosystems"],"prefix":"10.1099","volume":"76","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-1051-6740","authenticated-orcid":false,"given":"Anne-Sophie","family":"Le Guern","sequence":"first","affiliation":[{"name":"Institut Pasteur, Universit\u00e9 de Paris Cit\u00e9, Yersinia Research Unit, National Reference Center for Plague & Other Yersinioses, WHO Collaborating Centre for Plague FRA-146, F-75015 Paris, France"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-4413-4097","authenticated-orcid":false,"given":"Matan","family":"Shelomi","sequence":"additional","affiliation":[{"name":"Department of Entomology, National Taiwan University, No. 1, Sec. 4, Roosevelt Rd., Taipei 106319, Taiwan, ROC"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-1390-8571","authenticated-orcid":false,"given":"Tetiana","family":"Bahlai","sequence":"additional","affiliation":[{"name":"National Antarctic Scientific Center of Ukraine, 16 blvd. 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