{"created":"2025-11-26T02:27:12.733650+00:00","id":2015886,"links":{},"metadata":{"_buckets":{"deposit":"fc21bff9-c534-4cd9-ad62-dcc8d3cc34b1"},"_deposit":{"created_by":92,"id":"2015886","owner":"92","owners":[92],"pid":{"revision_id":0,"type":"depid","value":"2015886"},"status":"published"},"_oai":{"id":"oai:fra.repo.nii.ac.jp:02015886","sets":["15"]},"author_link":["4083"],"control_number":"2015886","item_10001_biblio_info_7":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"2025-11-12","bibliographicIssueDateType":"Issued"},"bibliographicPageStart":"19","bibliographic_titles":[{"bibliographic_title":"mSystems","bibliographic_titleLang":"en"}]}]},"item_10001_description_5":{"attribute_name":"抄録","attribute_value_mlt":[{"subitem_description":"Giant viruses (GVs) of the phyla Nucleocytoviricota and Mirusviricota are large double-stranded DNA viruses that infect diverse eukaryotic hosts and impact biogeochemical cycles. Their diversity and ecological roles have been well studied in the photic layer of the ocean, but less is known about their activity, population dynamics, and adaptive strategies in the aphotic layers. Here, we conducted eight seasonal time-series samplings of the surface and mesopelagic layers at a coastal site in Muroto, Japan, and integrated 18S metabarcoding, metagenomic, and metatranscriptomic data to investigate mesopelagic GVs and their potential hosts. The analysis identified 48 GV genomes including six that were exclusively detected in the mesopelagic layer. Notably, these mesopelagic-specific GVs showed persistent activity across seasons. To further investigate the distribution and phylogenomic features of GVs at a global scale across broader depths, we compiled 4,473 species-level GV genomes from the OceanDNA MAG project and other resources and analyzed 1,890 marine metagenomes. This revealed 101 deep-sea-specific GVs, distributed across the GV phylogenetic tree, indicating that adaptation to deep-sea environments has occurred in multiple lineages. One clade enriched with deep-sea-specific GVs included a GV genome identified in our Muroto data, which displayed a wide geographic distribution. Seventy-six KEGG orthologs and 74 Pfam domains were specifically enriched in deep-sea-specific GVs, encompassing functions related to the ubiquitin system, energy metabolism, and nitrogen acquisition. These findings support the scenario that distinct GV lineages have adapted to hosts in aphotic marine environments by altering their gene repertoire to thrive in this unique habitat.","subitem_description_language":"en","subitem_description_type":"Abstract"}]},"item_10001_description_6":{"attribute_name":"内容記述","attribute_value_mlt":[{"subitem_description":"Open Peer Review","subitem_description_language":"en","subitem_description_type":"Other"}]},"item_10001_publisher_8":{"attribute_name":"出版者","attribute_value_mlt":[{"subitem_publisher":"American Society for Microbiology","subitem_publisher_language":"en"}]},"item_10001_relation_14":{"attribute_name":"DOI","attribute_value_mlt":[{"subitem_relation_type":"isIdenticalTo","subitem_relation_type_id":{"subitem_relation_type_id_text":"10.1128/msystems.00932-25","subitem_relation_type_select":"DOI"}}]},"item_10001_relation_16":{"attribute_name":"情報源","attribute_value_mlt":[{"subitem_relation_name":[{"subitem_relation_name_language":"ja","subitem_relation_name_text":"水産技術研究所 環境・応用部門 沿岸生体システム部 （廿日市）"}],"subitem_relation_type":"isIdenticalTo","subitem_relation_type_id":{"subitem_relation_type_id_text":"25342006","subitem_relation_type_select":"Local"}}]},"item_10001_relation_17":{"attribute_name":"関連サイト","attribute_value_mlt":[{"subitem_relation_name":[{"subitem_relation_name_language":"en","subitem_relation_name_text":"ASM Journals"}],"subitem_relation_type":"isIdenticalTo","subitem_relation_type_id":{"subitem_relation_type_id_text":"https://doi.org/10.1128/msystems.00932-25","subitem_relation_type_select":"URI"}}]},"item_10001_source_id_9":{"attribute_name":"ISSN","attribute_value_mlt":[{"subitem_source_identifier":"2379-5077","subitem_source_identifier_type":"EISSN"}]},"item_10001_version_type_20":{"attribute_name":"著者版フラグ","attribute_value_mlt":[{"subitem_version_resource":"http://purl.org/coar/version/c_970fb48d4fbd8a85","subitem_version_type":"VoR"}]},"item_access_right":{"attribute_name":"アクセス権","attribute_value_mlt":[{"subitem_access_right":"open access","subitem_access_right_uri":"http://purl.org/coar/access_right/c_abf2"}]},"item_creator":{"attribute_name":"著者","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"Liu, Wenwen","creatorNameLang":"en","creatorNameType":"Organizational"}]},{"creatorNames":[{"creatorName":"Nagasaka, Komei","creatorNameLang":"en","creatorNameType":"Organizational"}]},{"creatorNames":[{"creatorName":"Wu, Junyi","creatorNameLang":"en","creatorNameType":"Organizational"}]},{"creatorNames":[{"creatorName":"Ban, Hiroki","creatorNameLang":"en","creatorNameType":"Organizational"},{"creatorName":"伴, 広輝","creatorNameLang":"ja","creatorNameType":"Organizational"},{"creatorName":"バン, ヒロキ","creatorNameLang":"ja-Kana","creatorNameType":"Organizational"}],"familyNames":[{"familyName":"Ban","familyNameLang":"en"},{"familyName":"伴","familyNameLang":"ja"},{"familyName":"バン","familyNameLang":"ja-Kana"}],"givenNames":[{"givenName":"Hiroki","givenNameLang":"en"},{"givenName":"広輝","givenNameLang":"ja"},{"givenName":"ヒロキ","givenNameLang":"ja-Kana"}],"nameIdentifiers":[{"nameIdentifier":"4083","nameIdentifierScheme":"WEKO"},{"nameIdentifier":"51007547","nameIdentifierScheme":"e-Rad_Researcher","nameIdentifierURI":"https://kaken.nii.ac.jp/ja/search/?qm=51007547"}]},{"creatorNames":[{"creatorName":"Mimick, Ethan","creatorNameLang":"en","creatorNameType":"Organizational"}]},{"creatorNames":[{"creatorName":"Meng, Lingjie","creatorNameLang":"en","creatorNameType":"Organizational"}]},{"creatorNames":[{"creatorName":"Neches, Russell Y.","creatorNameLang":"en","creatorNameType":"Organizational"}]},{"creatorNames":[{"creatorName":"Ogata, Hiroyuki","creatorNameLang":"en","creatorNameType":"Organizational"}]}]},"item_files":{"attribute_name":"ファイル情報","attribute_type":"file","attribute_value_mlt":[{"accessrole":"open_access","date":[{"dateType":"Available","dateValue":"2025-11-26"}],"filename":"25342006.pdf","filesize":[{"value":"1.9 MB"}],"format":"application/pdf","mimetype":"application/pdf","url":{"url":"https://fra.repo.nii.ac.jp/record/2015886/files/25342006.pdf"},"version_id":"c0f9b001-6f50-433d-8907-ed4ccdcc833b"},{"accessrole":"open_access","date":[{"dateType":"Available","dateValue":"2025-11-26"}],"filename":"25342006_Supplementary_Figures.pdf","filesize":[{"value":"3.3 MB"}],"format":"application/pdf","mimetype":"application/pdf","url":{"url":"https://fra.repo.nii.ac.jp/record/2015886/files/25342006_Supplementary_Figures.pdf"},"version_id":"2f609f7c-66f8-4166-acf0-c62791b1ef26"}]},"item_keyword":{"attribute_name":"キーワード","attribute_value_mlt":[{"subitem_subject":"giant viruses; deep ocean; the Kochi Prefectural Deep Seawater Laboratory; metatranscriptome; adaptation","subitem_subject_language":"en","subitem_subject_scheme":"Other"}]},"item_language":{"attribute_name":"言語","attribute_value_mlt":[{"subitem_language":"eng"}]},"item_resource_type":{"attribute_name":"資源タイプ","attribute_value_mlt":[{"resourcetype":"journal article","resourceuri":"http://purl.org/coar/resource_type/c_6501"}]},"item_title":"Giant viruses specific to deep oceans show persistent presence and activity","item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"Giant viruses specific to deep oceans show persistent presence and activity","subitem_title_language":"en"}]},"item_type_id":"10001","owner":"92","path":["15"],"pubdate":{"attribute_name":"PubDate","attribute_value":"2025-11-26"},"publish_date":"2025-11-26","publish_status":"0","recid":"2015886","relation_version_is_last":true,"title":["Giant viruses specific to deep oceans show persistent presence and activity"],"weko_creator_id":"92","weko_shared_id":-1},"updated":"2025-11-26T23:58:50.269403+00:00"}