Defluviimonas sediminis sp. nov., isolated from mangrove sediment

A Gram-stain-negative, facultatively aerobic, motile and ovoid- to rod-shaped bacterium, designated as FT324 , was isolated from a surface mangrove sediment sample from Shenzhen, PR China. The taxonomic position of strain FT324 was determined by a combination of phylogenetic, physiological, biochemical and chemotaxonomic analyses. Strain FT324 grew at 20-40 °C (optimum, 30-37 °C), pH 5.0-9.0 (optimum, pH 8.0) and in the presence of 0-3 % (w/v) NaCl (optimum, 1 %). Its full-length 16S rRNA gene sequence was the most similar to XJ4 (97.4 %), followed by DSM 18921 (96.62 %), CAU 1312 (96.54 %) and DL5-4 (96.47 %). The major fatty acids (>10 %) of FT324 were C cyclo 8 (51.9 %) and summed feature 8(29.6 %). The predominant respiratory quinone was Q-10. Its polar lipid profile contained phosphatidylethanolamine, phosphatidylmethylethanolamine, phosphatidylglycerol, diphosphatidylglycerol, one unidentified aminolipid, one unidentified lipid and two unidentified phospholipids. Its estimated genome size was 4 294 115 bp and the genomic DNA G+C content was 69.6 mol%. Based on its distinct phenotypic, chemotaxonomic and phylogenetic characteristics, strain FT324 should represent a novel species of the genus , for which the name sp. nov. is proposed (=MCCC 1K07685 =KCTC 92477 ).