Paracoccus laeviglucosivorans sp. nov., an l-glucose-utilizing bacterium isolated from soil

Strain 43P^T was isolated as an l-glucose-utilizing bacterium from soil in Japan. Cells of the strain were Gram-stain-negative, aerobic and non-motile cocci. The 16S rRNA gene sequence of the strain showed high similarity to that of Paracoccus limosus (98.5 %). Phylogenetic analyses based on 16S rRNA gene sequences revealed that this strain belongs to the genus Paracoccus. Strain 43P^T contained Q-10 as the sole isoprenoid quinone. The major cellular fatty acids were C_18: 1ω7c or C_18: 1ω6c and C_16: 0, and C_18: 0, C_18: 1ω9c, C_10: 0 3-OH and summed feature 2 were detected as minor components. The DNA G+C content of strain 43P^T was 64.1 mol%. Strain 43P^T contained the major polar lipids phosphatidylcholine, phosphatidylglycerol, diphosphatidylglycerol, an unknown aminolipid and two unknown glycolipids. The DNA-DNA relatedness between strain 43P^T and the six related type strains of the genus Paracoccus, including P. limosus, was below 23 %. Based on the chemotaxonomic and physiological data and the values of DNA-DNA relatedness, especially the ability to assimilate l-glucose, this strain should be classified as a representative of a novel species of the genus Paracoccus, for which the name Paracoccus laeviglucosivorans sp. nov. (type strain 43P^T = JCM 30587^T = DSM 100094^T) is proposed.