2025/12/03 by Seung Seob Bae, Yoon-Hee Jung, Yong Min Kwon +4 · 1 voice
Biochemistry, Genetics and Molecular Biology · Agricultural and Biological Sciences · #Genomics and Phylogenetic Studies #Seaweed-derived Bioactive Compounds #Polyamine Metabolism and Applications
paper · doi:10.1099/ijsem.0.006988
openalex created_date 2025/12/03 · openalex publication_date 2025/12/03 · openalex updated_date 2026/06/11
A marine bacterium capable of degrading alginate, designated as strain TSD2052 T , was isolated from a tidal flat sediment sample collected in Taean County, Republic of Korea. Phylogenetic analysis based on 16S rRNA gene sequences revealed that strain TSD2052 T belonged to the genus Agarivorans, showing 96.2–97.8% sequence similarity. The whole genome of strain TSD2052 T was 4.62 Mb, with a DNA G+C content of 44.3 mol%. The average nucleotide identity, average amino acid identity and digital DNA–DNA hybridization values between strain TSD2052 T and all genome-sequenced species of the genus Agarivorans were below 76.7%, 81.7% and 20.6%, respectively, indicating values lower than the standard cut-off for species delineation. Growth was observed at 10–35 °C (optimum 25 °C), pH 6–10 (optimum pH 8) and 1–5% (w/v) NaCl (optimum 3%). The major fatty acids (>10%) were C 12:0 , C 16:0 , summed feature 3 (C 16 : 1 ω 6 c and/or C 16 : 1 ω 7c ) and summed feature 8 (C 18 : 1 ω 6 c and/or C 18:1 ω 7c ). The respiratory quinone was ubiquinone-8. The major polar lipids were phosphatidylethanolamine, phosphatidylglycerol, an unidentified aminolipid and four unidentified lipids. Based on the results of phenotypic characterization, phylogenetic analysis and genome-based comparisons, strain TSD2052 T represents a novel species in the genus Agarivorans , for which we propose the name Agarivorans sediminis sp. nov. (=KCTC 92288 T =JCM 35392 T ).