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Characterizes a novel bacterium from mussels, suggesting new taxonomic classification.
A novel bacterium, designated MH2013 T was isolated from a mussel in Wando, Republic of Korea. Cells were short rods, Gram-stain-negative, facultatively anaerobic, motile by flagella, oxidase- and catalase-positive. Growth occurred at optimum conditions of 30 °C, pH 8, in the presence of 2% salinity. Comparative analysis of 16S rRNA gene sequences showed higher similarity to Glaciecola nitratireducens FR1064 T (95.9%), Glaciecola pallidula DSM 14239 T (95.6%), Opacimonas viscosa LMIT007 T (95.0%) and Paraglaciecola aestuariiviviens JDTF T (94.9%). The major cellular fatty acids were C 16 : 0 (27.8%) and products present in summed feature 3 (C 16 : 1 ω7c and/or iso-C 15 : 0 2-OH) (27.6%). The predominant respiratory quinone was Q-8. The major polar lipids were phosphatidylethanolamine and phosphatidylglycerol. The genome is 4 Mbp (DNA G+C content, 44.5 mol%) with 3,334 protein-coding genes and 52 tRNAs. Comprehensive chemotaxonomic analysis revealed that the polar lipid profile and major fatty acid composition of strain MH2013 T were distinctly different from those of its closest phylogenetic relatives. In combination with biochemical characterization, genomic and protein analyses, these findings strongly support the classification of strain MH2013 T as a novel genus within the family Alteromonadaceae , for which the name Marinibium conchae gen. nov. sp. nov., is proposed. The type strain is MH2013 T (=KCTC 82212 T =JCM 34296 T ).
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Lee et al. (2026) studied this question.
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