Centipeda periodontii gen. nov., sp. nov. from Human Periodontal Lesions

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Abstract
Marine strains of multiply appendaged prosthecate bacteria have been isolated. All three strains included in this study have characteristics that are typical of the genus Prosthecomicrobium. The deoxyribonucleic acid base compositions of the strains tested range from 66 to 67 mol% guanine plus cytosine; these values are similar to the value reported for Prosthecomicrobium enhydrum. However, the new strains which we studied differ from Prosthecomicrobium enhydrum because of their marine origin, immotility, requirement for a minimum salinity for growth of 5%, and lack of colony pigmentation. The marine strains have an absolute sodium ion requirement for growth, which is consistent with their being indigenous to marine environments. A new species, Prosthecomicrobium litoralum, is proposed.

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