sp. nov., a new marine bacterium isolated from rearings and collectors of the scallop Free

Abstract

Four bacterial strains were isolated from larval cultures and collectors of the scallop . They showed a high level of intragroup genomic relatedness (84–95%) as determined by DNA-DNA hybridization. The cells were Gram-negative, strictly aerobic, motile, ovoid rods. They grew at temperatures from 15 to 37 °C and from pH 7·0 to 10, but did not grow in the absence of NaCl and required growth factors. They had the ability to use a wide variety of compounds as sole carbon source: -mannose, -galactose, -fructose, -glucose, -xylose, melibiose, trehalose, maltose, cellobiose, sucrose, -erythritol, -mannitol, glycerol, -sorbitol, -inositol, succinate, propionate, butyrate, γ-aminobutyrate, -hydroxybutyrate, 2-ketoglutarate, pyruvate, fumarate, glycine, -α-alanine, β-alanine, -glutamate, -arginine, -lysine, -ornithine and -proline. They exhibited oxidase and catalase activities but no denitrification activity. The isolates did not contain bacteriochlorophyll a. The G+C content ranged from 57·6 to 58 mol%. Phylogenetic analyses of the 16S rRNA sequence revealed that these isolates belong to the genus . On the basis of quantitative hybridization data, it is proposed that these isolates should be placed in a new species, . The type strain is BS107(= CIP 105210).

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1998-04-01
2024-03-29
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