Abstract
A Gram-negative, strictly aerobic, motile, short rod-shaped bacterium with peritrichous flagella, designated JYr12(T), was isolated from sediment of an amphioxus breeding zone in the coastal region of Qingdao, China. Strain JYr12(T) was found to grow optimally at 28 °C, at pH 7.0 and in the presence of 2-3 % (w/v) NaCl. The organism was determined to contain C(16:0) (28.3 %) and C(16:1) ω7c and/or C(16:1) ω6c (34.8 %) as the major fatty acids and ubiquinone-8 (90 %) as the predominant isoprenoid ubiquinone. The polar lipids were found to consist of phosphatidylglycerol, phosphatidylethanolamine, diphosphatidylglycerol and an unknown glycolipid. The G+C content of the genomic DNA was determined to be 42.3 mol %. Comparative 16S rRNA gene sequence analysis revealed that strain JYr12(T) was placed in the class Gammaproteobacteria and shared ~91.20, 91.18, 91.01, 90.95, 90.80 and 90.40 % sequence similarities with representatives of the genus Thalassolituus, Nitrincola, Oceanospirillum, Marinobacterium, Marinomonas and Microbulbifer, respectively. On the basis of phenotypic, chemotaxonomic and genotypic data, strain JYr12(T) is considered to represent a novel species in a new genus within the Gammaproteobacteria, for which the name Litoribacillus peritrichatus gen. nov., sp. nov. is proposed. The type strain of Litoribacillus peritrichatus is JYr12(T) (=CGMCC 1.10796(T) = JCM17551(T)).
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