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INTERNATIONAL JOURNAL OF SYSTEMATIC AND EVOLUTIONARY MICROBIOLOGY logo International Journal of Systematic and Evolutionary Microbiology

Volume 75, Issue 2

gen. nov., sp. nov., a marine bacterium of the family isolated from a halophyte No Access

Abstract

Two Gram-stain-negative, facultative anaerobic, rod-shaped and non-gliding bacteria, designated as HL-DH10 and HL-DH14, were isolated from the halophyte in a mudflat, Republic of Korea. Based on the results of 16S rRNA gene pairwise analysis, the two isolates were the members of the family , and SC17 was the most closely related to strains HL-DH10 and HL-DH14 with 96.3% and 95.4% sequence similarity, respectively. The average nt identity and digital DNA–DNA hybridization values between strains HL-DH10 and HL-DH14 and other related species were all less than 79.2% and 21.9%, respectively. The genomic DNA G+C contents of strains HL-DH10 and HL-DH14 were 32.0% and 31.5%, respectively. Cells of these strains showed optimal growth at 25 °C, pH 6.5–7.0 and 2.5–4.0% (w/v) sea salts. The major respiratory quinone was menaquinone-6. The major cellular fatty acids were iso-C (14.0–16.0%), iso-C G (10.0–12.0%), iso-C 3-OH (12.4–13.9%), iso-C 3-OH (11.8–14.9%) and anteiso-C (9.4–10.6%). The polar lipids consisted of phosphatidylethanolamine, an unidentified aminophospholipid, two to three unidentified aminolipids and three unidentified lipids. The comprehensive phylogenetic, genomic, phenotypic and chemotaxonomic results indicate that strains HL-DH10 and HL-DH14 are considered to represent a novel genus of . Hence, we propose the novel genus gen. nov., sp. nov. The type strain is HL-DH10 (=KCCM 90512=JCM 36598).

  • Received:
  • Accepted:
  • Published Online:
Keyword(s): halophyte , new genus , new species and Thalassobellus suaedae
Funding
This study was supported by the:
  • Ministry of Science and ICT, South Korea (Award NRF-2021M3I6A1091272)
    • Principal Award Recipient: Yeon HwangChung
  • Korea Institute of Marine Science and Technology promotion (Award 20210427)
    • Principal Award Recipient: Yeon HwangChung
  • Korea Institute of Marine Science and Technology promotion (Award RS-2023-00238486)
    • Principal Award Recipient: Yeon HwangChung
© 2025 The Authors
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Thalassobellus suaedae gen. nov., sp. nov., a marine bacterium of the family Flavobacteriaceae isolated from a halophyte Suaeda japonica
Int J Syst Evol Microbiol 75, 006663 (2025); https://doi.org/10.1099/ijsem.0.006663
/content/journal/ijsem/10.1099/ijsem.0.006663
/content/journal/ijsem/10.1099/ijsem.0.006663
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