{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,6,16]],"date-time":"2026-06-16T23:11:43Z","timestamp":1781651503578,"version":"3.54.5"},"reference-count":44,"publisher":"Microbiology Society","issue":"4","funder":[{"name":"Science and Technology Projects of Southwest Joint Graduate School of Yunnan Province","award":["202302AP370001"],"award-info":[{"award-number":["202302AP370001"]}]},{"name":"Yunnan Provincial Ministry of Science and Technology","award":["202203AC100002-02, 202305AM070002 and 202301AT070100"],"award-info":[{"award-number":["202203AC100002-02, 202305AM070002 and 202301AT070100"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[2024,4,17]]},"abstract":"<jats:p>Three Gram-stain-negative, aerobic, rod-shaped, non-motile strains (DC2W<jats:sup>T<\/jats:sup>, DC25W<jats:sup>T<\/jats:sup>, and LKC2W) were isolated from streams in China. Comparisons based on the 16S rRNA gene sequences showed that these three strains share 16S rRNA gene sequence similarity values over 97.0\u200a% with the species of genus <jats:italic>Arcicella<\/jats:italic>. There was confusion due to the fact that all species of genera <jats:italic>Flectobacillus<\/jats:italic>, <jats:italic>Aquirufa<\/jats:italic>, and <jats:italic>Sandaracinomonas<\/jats:italic> show 16S rRNA gene sequence similarity of over 90.0\u200a% to the above three strains, but the genus <jats:italic>Flectobacillus<\/jats:italic> belongs to the family <jats:italic>Spirosomataceae<\/jats:italic> and the genera <jats:italic>Aquirufa<\/jats:italic> and <jats:italic>Sandaracinomonas<\/jats:italic> belong to the family <jats:italic>Cytophagaceae<\/jats:italic>. Observing the phylogenetic trees, strains DC2W<jats:sup>T<\/jats:sup>, DC25W<jats:sup>T<\/jats:sup>, and LKC2W cluster closely with the species of genus <jats:italic>Arcicella<\/jats:italic>, but some species within the families <jats:italic>Spirosomataceae<\/jats:italic> and <jats:italic>Cytophagaceae<\/jats:italic> are not monophyletic. The phylogenomic tree also showed a confused phylogenetic relationships among these non-monophyletic species. Combining the phylogenetic relationships and average nucleotide identity values, the current taxonomic status of all the genera within the families <jats:italic>Spirosomataceae<\/jats:italic> and <jats:italic>Cytophagaceae<\/jats:italic> were re-examined. The genera \u2018<jats:italic>Chryseosolibacter<\/jats:italic>\u2019, \u2018<jats:italic>Dawidia<\/jats:italic>\u2019, and <jats:italic>Chryseotalea<\/jats:italic> should belong to the new family <jats:italic>Chryseotaleaceae<\/jats:italic> fam. nov., the genera <jats:italic>Arcicella<\/jats:italic>, <jats:italic>Flectobacillus<\/jats:italic>, <jats:italic>Pseudarcicella<\/jats:italic>, <jats:italic>Aquirufa<\/jats:italic>, and <jats:italic>Sandaracinomonas<\/jats:italic> should belong to the new family <jats:italic>Flectobacillaceae<\/jats:italic> fam. nov., the genera <jats:italic>Fluviimonas<\/jats:italic>, <jats:italic>Taeseokella<\/jats:italic>, <jats:italic>Arcticibacterium<\/jats:italic>, <jats:italic>Emticicia<\/jats:italic>, <jats:italic>Jiulongibacter<\/jats:italic>, <jats:italic>Marinilongibacter<\/jats:italic>, <jats:italic>Lacihabitans<\/jats:italic>, and <jats:italic>Leadbetterella<\/jats:italic> should belong to the new family <jats:italic>Leadbetterellaceae<\/jats:italic> fam. nov., the genus <jats:italic>Litoribacter<\/jats:italic> should be reassigned to the family <jats:italic>Cyclobacteriaceae<\/jats:italic>, and the genera <jats:italic>Arundinibacter<\/jats:italic> and <jats:italic>Tellurirhabdus<\/jats:italic> should be reassigned to the family <jats:italic>Spirosomataceae<\/jats:italic>. Strains DC2W<jats:sup>T<\/jats:sup> and DC25W<jats:sup>T<\/jats:sup> are reported to represent two novel species of the genus <jats:italic>Arcicella<\/jats:italic>, for which the names <jats:italic>Arcicella gelida<\/jats:italic> sp. nov. (type strain DC2W<jats:sup>T<\/jats:sup>=GDMCC 1.3209<jats:sup>T<\/jats:sup>=KCTC 92559<jats:sup>T<\/jats:sup>) and <jats:italic>Arcicella lustrica<\/jats:italic> sp. nov. (type strain DC25W<jats:sup>T<\/jats:sup>=GDMCC 1.3210<jats:sup>T<\/jats:sup>=KCTC 92557<jats:sup>T<\/jats:sup>) are proposed.<\/jats:p>","DOI":"10.1099\/ijsem.0.006345","type":"journal-article","created":{"date-parts":[[2024,4,17]],"date-time":"2024-04-17T13:20:29Z","timestamp":1713360029000},"source":"Crossref","is-referenced-by-count":3,"title":["Arcicella gelida sp. nov. and Arcicella lustrica sp. nov., isolated from streams in China and re-examining the taxonomic status of all the genera within the families Spirosomataceae and Cytophagaceae"],"prefix":"10.1099","volume":"74","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-4520-5400","authenticated-orcid":false,"given":"Huibin","family":"Lu","sequence":"first","affiliation":[{"name":"Yunnan Key Laboratory of Plateau Geographical Process and Environmental Changes, Faculty of Geography, Yunnan Normal University, Kunming 650500, PR 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