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INTERNATIONAL JOURNAL OF SYSTEMATIC AND EVOLUTIONARY MICROBIOLOGY logo

Volume 74, Issue 4

sp. nov. and sp. nov., isolated from streams in China and re-examining the taxonomic status of all the genera within the families and No Access

Abstract

Three Gram-stain-negative, aerobic, rod-shaped, non-motile strains (DC2W, DC25W, 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 % with the species of genus . There was confusion due to the fact that all species of genera , , and show 16S rRNA gene sequence similarity of over 90.0 % to the above three strains, but the genus belongs to the family and the genera and belong to the family . Observing the phylogenetic trees, strains DC2W, DC25W, and LKC2W cluster closely with the species of genus , but some species within the families and 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 and were re-examined. The genera ‘’, ‘’, and should belong to the new family fam. nov., the genera , , , , and should belong to the new family fam. nov., the genera , , , , , , , and should belong to the new family fam. nov., the genus should be reassigned to the family , and the genera and should be reassigned to the family . Strains DC2W and DC25W are reported to represent two novel species of the genus , for which the names sp. nov. (type strain DC2W=GDMCC 1.3209=KCTC 92559) and sp. nov. (type strain DC25W=GDMCC 1.3210=KCTC 92557) are proposed.

  • Received:
  • Accepted:
  • Published Online:
Keyword(s): Arcicella and streams
Funding
This study was supported by the:
  • Yunnan Provincial Ministry of Science and Technology (Award 202203AC100002-02, 202305AM070002 and 202301AT070100)
    • Principle Award Recipient: HuibinLu
  • Science and Technology Projects of Southwest Joint Graduate School of Yunnan Province (Award 202302AP370001)
    • Principle Award Recipient: LiChen
© 2024 The Authors
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2024-04-17
2024-04-30
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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
Int J Syst Evol Microbiol 74, 006345 (2024); https://doi.org/10.1099/ijsem.0.006345
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