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Abstract

A Gram-stain-negative, strictly aerobic, rod-shaped motile bacterium with a single polar flagellum, designed strain ALS 81, was isolated from sediment sample collected in the AiLian Bay of Weihai, China. Phylogenetic analysis based on 16SrRNA gene sequence indicated that strain ALS 81 forms a lineage within the family   Alteromonadaceae   that is distinct from the most closely related genera   Agarivorans  (93.9–94.4 % 16S rRNA gene sequence similarity),   Celerinatantimonas   (92.0 %) and   Aliagarivorans   (91.6 %). Optimum growth occurred in the presence of 3–4 % (w/v) NaCl, at pH 8.0 and at 28 °C. The major fatty acids (>10 % of total fatty acids) were iso-C16 : 0 (27.3 %), anteiso-C15 : 0 (27.0 %) and anteiso-C17 : 0 (11.2 %). The predominant polar lipids were phosphatidylethanolamine, glycolipid and four unidentified polar lipids. The DNA G+C content of strain ALS 81 calculated on the basis of the genome sequence is 43.5 mol% and the genome size is 4.5 Mbp. The predominant isoprenoid quinone is ubiquinone 8. On the basis of polyphasic analysis, strain ALS 81 is considered to represent a novel species in a novel genus of the family   Alteromonadaceae  , for which the name Alginatibacterium sediminis gen. nov., sp. nov. is proposed. The type strain of the type species is ALS 81 (=KCTC 62397=MCCC 1K03481).

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/content/journal/ijsem/10.1099/ijsem.0.003187
2019-02-01
2020-01-21
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