Abstract
A Gram-stain-positive, aerobic, endospore-forming bacterium isolated from a coolant lubricant was studied for its taxonomic allocation. On the basis of 16S rRNA gene sequences, strain KSS164-79T shared highest similarity (92.3-92.4 %) to type strains of the species Marinicrinis sediminis,Paenibacillus dongdonensis, Paenibacillus abyssi and Paenibacillus motobuensis. In phylogenetic trees based on the 16S rRNA gene, strain KSS164-79T always formed a distinct cluster with the type strain of M. sediminis. The fatty acid profile supported the grouping of the strain to the genus Marinicrinis. As major fatty acids, anteiso-C15 : 0, iso-C15 : 0 and iso-C16 : 0 were detected. The polar lipid profile contained the major components diphosphatidylglycerol, phosphatidylglycerol, phosphatidylethanolamine and two unidentified glycolipids. The major quinone was menaquinone MK-7. In addition, physiological and biochemical test results allowed the clear phenotypic differentiation of strain KSS164-79T from M. sediminis. Hence, KSS164-79T represents a novel species of the genus Marinicrinis, for which the name Marinicrinis lubricantis sp. nov. is proposed, with KSS164-79T (=DSM 104943T=LMG 30062T=CCM 8749T=CIP 111345T) as the type strain.
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