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

Volume 75, Issue 3

sp. nov., a novel halophilic bacterium isolated from salted shrimp jeotgal Open Access

Abstract

A novel bacterial species, designated FBL11, was isolated from salted shrimp jeotgal, a traditional Korean fermented food sampled in the Republic of Korea. This strain showed the highest 16S rRNA gene sequence similarity to strain F2608 (NR_181578.1) at 98.3%. The genome size of strain FBL11 was 3,294,493 bp with a G+C content of 42.5 mol%. Computation of relatedness indicates that strain FBL11 shares the highest relatedness of 78.5% with strain KC-40 (NZ_CAJGZP01) and 25.2% with strain CIP110854 (NZ_FUGE01), with values clearly below the cut-offs for species distinction. Polyphasic characterization using biochemical tests and matrix-assisted laser desorption/ionization time-of-flight MS analysis confirmed these findings. Strain FBL11 grew at 10–30 °C (optimum, 20–30 °C) with 0–15% NaCl (w/v; optimum, 3–6%). Analysis of biosynthetic gene clusters responsible for secondary metabolite production revealed that strain FBL11 generates unique products such as beta-lactone and redox-cofactors within this genus. Based on the genomic and phenotypic data obtained, we propose that strain FBL11 represents a novel species, for which we propose the name sp. nov. (type strain FBL11=KACC 23745=KCTC 8655=JCM 37231).

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Keyword(s): marine species , novel species , Psychrobacter saeujeotis and salted fermented shrimp
Funding
This study was supported by the:
  • National Research Foundation of Korea (Award No. RS-2023-00212751)
    • Principal Award Recipient: EiseulKim
© 2025 The Authors
  • This is an open-access article distributed under the terms of the Creative Commons Attribution License. This article was made open access via a Publish and Read agreement between the Microbiology Society and the corresponding author’s institution.
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2025-03-25
2026-01-18

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Psychrobacter saeujeotis sp. nov., a novel halophilic bacterium isolated from salted shrimp jeotgal
Int J Syst Evol Microbiol 75, 006734 (2025); https://doi.org/10.1099/ijsem.0.006734
/content/journal/ijsem/10.1099/ijsem.0.006734
/content/journal/ijsem/10.1099/ijsem.0.006734
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