Paracoccus seriniphilus sp. nov., an l-serine-dehydratase-producing coccus isolated from the marine bryozoan Bugula plumosa

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Abstract
A novel marine Gram-negative, non-motile, non-spore-forming, aerobic bacterium, associated with the bryozoan Bugula plumosa, was isolated in a screening programme for strains containing enzymes able to convert the amino acid l-serine. Strain MBT-A4T produced l-serine dehydratase and was able to grow on l-serine as the sole carbon and nitrogen source. The nearest phylogenetic neighbour was Paracoccus marcusii, as determined by 16S rDNA sequence analysis (97·6 % similarity). The DNA–DNA reassociation value obtained for Paracoccus marcusii DSM11574T and MBT-A4T was 32·6 %. The major ubiquinone was Q-10. Based on genotypic, chemotaxonomic and physiological characteristics, a new species of the genus Paracoccus is proposed, Paracoccus seriniphilus sp. nov., the type strain being strain MBT-A4T (=DSM 14827T =CIP 107400T).

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