Thalassotalea profundi sp. nov. isolated from a deep-sea seamount

The Gram-stain-negative, rod-shaped, strictly aerobic, motile bacterial strain, designated YM155 T , was isolated from a seamount near the Yap Trench in the tropical western Pacific. Phylogenetic analysis based on 16S rRNA gene sequence showed that strain YM155 T was related to the genus Thalassotalea and had highest 16S rRNA gene sequence similarities with the type strains of Thalassotalea piscium T202 T (97.2 %) and Thalassotalea agariperforans M-M1 T (97.2 %). The predominant cellular fatty acids were C17 : 1ω8c, summed feature 3 (composed of iso-C15 : 0 2-OH and/or C16 : 1ω7c) and iso-C16 : 0. Ubiquinone 8 (Q-8) was the respiratory quinone. The polar lipid profile contained phosphatidylglycerol, phosphatidylethanolamine, two unidentified phospholipids and one unidentified lipid. The genomic DNA G+C content of strain YM155 T was 36.1 mol%. On the basis of the evidence presented in this study, strain YM155 T represents a novel species of the genus Thalassotalea, for which we propose the name Thalassotalea profundi sp. nov. (type strain YM155 T =KACC 18563 T =CGMCC 1.15922 T ).