{"entity": "researcher", "timestamp": "2026-08-22T08:32:25.669Z", "family": "Vosseberg", "given": "Julian", "initials": "J", "orcid": "0000-0002-3105-9414", "affiliations": ["Theoretical Biology and Bioinformatics, Department of Biology, Utrecht University, Utrecht, the Netherlands."], "links": {"self": {"href": "https://publications-affiliated.scilifelab.se/researcher/0319ec5bebac4d47a58435559b7a61c1.json"}, "display": {"href": "https://publications-affiliated.scilifelab.se/researcher/0319ec5bebac4d47a58435559b7a61c1"}}, "publications": [{"entity": "publication", "iuid": "e8468149b2674c47bef3146c253de7b6", "links": {"self": {"href": "https://publications-affiliated.scilifelab.se/publication/e8468149b2674c47bef3146c253de7b6.json"}, "display": {"href": "https://publications-affiliated.scilifelab.se/publication/e8468149b2674c47bef3146c253de7b6"}}, "title": "Phylogenetic affiliation of mitochondria with Alpha-II and Rickettsiales is an artefact.", "authors": [{"family": "Martijn", "given": "Joran", "initials": "J", "orcid": "0000-0001-7651-5252", "researcher": {"href": "https://publications-affiliated.scilifelab.se/researcher/067943a3ac3147ea87a3d839f3bb3bdb.json"}}, {"family": "Vosseberg", "given": "Julian", "initials": "J", "orcid": "0000-0002-3105-9414", "researcher": {"href": "https://publications-affiliated.scilifelab.se/researcher/0319ec5bebac4d47a58435559b7a61c1.json"}}, {"family": "Guy", "given": "Lionel", "initials": "L", "orcid": "0000-0001-8354-2398", "researcher": {"href": "https://publications-affiliated.scilifelab.se/researcher/93e170c891c742838951a1fc8b50d223.json"}}, {"family": "Offre", "given": "Pierre", "initials": "P", "orcid": "0000-0002-3660-2164", "researcher": {"href": "https://publications-affiliated.scilifelab.se/researcher/750682b08112445882768c1b18f38407.json"}}, {"family": "Ettema", "given": "Thijs J G", "initials": "TJG", "orcid": "0000-0002-6898-6377", "researcher": {"href": "https://publications-affiliated.scilifelab.se/researcher/6a7921cec2bb45a7a7b0454f41b5f1aa.json"}}], "type": "letter", "published": "2022-12-00", "journal": {"title": "Nat Ecol Evol", "issn": "2397-334X", "volume": "6", "issue": "12", "pages": "1829-1831", "issn-l": "2397-334X"}, "abstract": null, "doi": "10.1038/s41559-022-01871-3", "pmid": "36280780", "labels": [], "xrefs": [{"db": "pii", "key": "10.1038/s41559-022-01871-3"}, {"db": "figshare", "key": "10.6084/m9.figshare.17108234.v1"}], "notes": [], "created": "2026-08-20T08:55:10.313Z", "modified": "2026-08-20T08:55:10.531Z"}, {"entity": "publication", "iuid": "8ebcb7172a7a448dbd5525040178b920", "links": {"self": {"href": "https://publications-affiliated.scilifelab.se/publication/8ebcb7172a7a448dbd5525040178b920.json"}, "display": {"href": "https://publications-affiliated.scilifelab.se/publication/8ebcb7172a7a448dbd5525040178b920"}}, "title": "The evolutionary origin of host association in the Rickettsiales.", "authors": [{"family": "Sch\u00f6n", "given": "Max E", "initials": "ME", "orcid": "0000-0002-4453-4173", "researcher": {"href": "https://publications-affiliated.scilifelab.se/researcher/a439173e8ce64fcfb4d09e457f1c6bec.json"}}, {"family": "Martijn", "given": "Joran", "initials": "J"}, {"family": "Vosseberg", "given": "Julian", "initials": "J", "orcid": "0000-0002-3105-9414", "researcher": {"href": "https://publications-affiliated.scilifelab.se/researcher/0319ec5bebac4d47a58435559b7a61c1.json"}}, {"family": "K\u00f6stlbacher", "given": "Stephan", "initials": "S", "orcid": "0000-0001-6710-7572", "researcher": {"href": "https://publications-affiliated.scilifelab.se/researcher/497897f0d7104ab78bc4e873348af3dd.json"}}, {"family": "Ettema", "given": "Thijs J G", "initials": "TJG", "orcid": "0000-0002-6898-6377", "researcher": {"href": "https://publications-affiliated.scilifelab.se/researcher/6a7921cec2bb45a7a7b0454f41b5f1aa.json"}}], "type": "journal article", "published": "2022-08-00", "journal": {"title": "Nat. Microbiol", "issn": "2058-5276", "volume": "7", "issue": "8", "pages": "1189-1199", "issn-l": "2058-5276"}, "abstract": "The evolution of obligate host-association of bacterial symbionts and pathogens remains poorly understood. The Rickettsiales are an alphaproteobacterial order of obligate endosymbionts and parasites that infect a wide variety of eukaryotic hosts, including humans, livestock, insects and protists. Induced by their host-associated lifestyle, Rickettsiales genomes have undergone reductive evolution, leading to small, AT-rich genomes with limited metabolic capacities. Here we uncover eleven deep-branching alphaproteobacterial metagenome assembled genomes from aquatic environments, including data from the Tara Oceans initiative and other publicly available datasets, distributed over three previously undescribed Rickettsiales-related clades. Phylogenomic analyses reveal that two of these clades, Mitibacteraceae and Athabascaceae, branch sister to all previously sampled Rickettsiales. The third clade, Gamibacteraceae, branch sister to the recently identified ectosymbiotic 'Candidatus Deianiraea vastatrix'. Comparative analyses indicate that the gene complement of Mitibacteraceae and Athabascaceae is reminiscent of that of free-living and biofilm-associated bacteria. Ancestral genome content reconstruction across the Rickettsiales species tree further suggests that the evolution of host association in Rickettsiales was a gradual process that may have involved the repurposing of a type IV secretion system.", "doi": "10.1038/s41564-022-01169-x", "pmid": "35798888", "labels": [], "xrefs": [{"db": "mid", "key": "EMS145532"}, {"db": "pmc", "key": "PMC9352585"}, {"db": "pii", "key": "10.1038/s41564-022-01169-x"}, {"db": "figshare", "key": "10.6084/m9.figshare.c.5494977"}], "notes": [], "created": "2026-08-21T11:50:42.935Z", "modified": "2026-08-21T11:50:43.096Z"}, {"entity": "publication", "iuid": "8b140e750f1c40f1ad97d8d17f1d2fdc", "links": {"self": {"href": "https://publications-affiliated.scilifelab.se/publication/8b140e750f1c40f1ad97d8d17f1d2fdc.json"}, "display": {"href": "https://publications-affiliated.scilifelab.se/publication/8b140e750f1c40f1ad97d8d17f1d2fdc"}}, "title": "Hikarchaeia demonstrate an intermediate stage in the methanogen-to-halophile transition.", "authors": [{"family": "Martijn", "given": "Joran", "initials": "J"}, {"family": "Sch\u00f6n", "given": "Max E", "initials": "ME", "orcid": "0000-0002-4453-4173", "researcher": {"href": "https://publications-affiliated.scilifelab.se/researcher/a439173e8ce64fcfb4d09e457f1c6bec.json"}}, {"family": "Lind", "given": "Anders E", "initials": "AE"}, {"family": "Vosseberg", "given": "Julian", "initials": "J", "orcid": "0000-0002-3105-9414", "researcher": {"href": "https://publications-affiliated.scilifelab.se/researcher/0319ec5bebac4d47a58435559b7a61c1.json"}}, {"family": "Williams", "given": "Tom A", "initials": "TA", "orcid": "0000-0003-1072-0223", "researcher": {"href": "https://publications-affiliated.scilifelab.se/researcher/e04da3526c024149866bf6f24edc2d64.json"}}, {"family": "Spang", "given": "Anja", "initials": "A", "orcid": "0000-0002-6518-8556", "researcher": {"href": "https://publications-affiliated.scilifelab.se/researcher/ee19a6765cb847caac5c440aeb15b509.json"}}, {"family": "Ettema", "given": "Thijs J G", "initials": "TJG", "orcid": "0000-0002-6898-6377", "researcher": {"href": "https://publications-affiliated.scilifelab.se/researcher/6a7921cec2bb45a7a7b0454f41b5f1aa.json"}}], "type": "journal article", "published": "2020-10-30", "journal": {"title": "Nat Commun", "issn": "2041-1723", "volume": "11", "issue": "1", "pages": "5490", "issn-l": "2041-1723"}, "abstract": "Halobacteria (henceforth: Haloarchaea) are predominantly aerobic halophiles that are thought to have evolved from anaerobic methanogens. This remarkable transformation most likely involved an extensive influx of bacterial genes. Whether it entailed a single massive transfer event or a gradual stream of transfers remains a matter of debate. To address this, genomes that descend from methanogen-to-halophile intermediates are necessary. Here, we present five such near-complete genomes of Marine Group IV archaea (Hikarchaeia), the closest known relatives of Haloarchaea. Their inclusion in gene tree-aware ancestral reconstructions reveals an intermediate stage that had already lost a large number of genes, including nearly all of those involved in methanogenesis and the Wood-Ljungdahl pathway. In contrast, the last Haloarchaea common ancestor gained a large number of genes and expanded its aerobic respiration and salt/UV resistance gene repertoire. Our results suggest that complex and gradual patterns of gain and loss shaped the methanogen-to-halophile transition.", "doi": "10.1038/s41467-020-19200-2", "pmid": "33127909", "labels": [], "xrefs": [{"db": "pmc", "key": "PMC7599335"}, {"db": "pii", "key": "10.1038/s41467-020-19200-2"}, {"db": "figshare", "key": "10.6084/m9.figshare.11117894.v1"}, {"db": "figshare", "key": "10.6084/m9.figshare.11118164.v1"}, {"db": "figshare", "key": "10.6084/m9.figshare.12964832.v3"}, {"db": "figshare", "key": "10.6084/m9.figshare.11352140"}], "notes": [], "created": "2026-08-21T11:48:40.761Z", "modified": "2026-08-21T11:48:40.825Z"}]}