Echinicola salinicaeni sp. nov., a novel bacterium isolated from saltern mud

A novel gram-negative, aerobic, pink, motile, gliding, rod-shaped bacterium, designated P51 T , was isolated from saline silt samples in Yantai, China. It was able to grow at 4–42 °C (optimum 33 °C), pH 4.0–9.0 (optimum 7.0), and in 0–11.0% NaCl (optimum 4.0%, w/v). It grew at 4 °C, which was lower than the minimum temperature for related strains. The genome consisted of 4111 genes with a total length of 5 139 782 bp. The 16S rRNA gene sequence analysis indicated that strain P51 T was a member of the genus Echinicola and most closely related to ‘ Echinicola shivajiensis ’. A genome analysis identified genes encoding proteins associated with carbon source utilisation, and the carotenoid biosynthesis and β -lactam resistance pathways. Strain P51 T shared an average nucleotide identity value below 84.7%, an average amino acid identity value between 70.8 and 89.3%, and a digital DNA-DNA hybridisation identity of between 17.9–28.2% with closely related type strains within the genus Echinicola . The sole menaquinone was MK-7, and the major fatty acids were iso-C 15:0 , summed feature 3 (C 16:1 ω 7 c and/or C 16:1 ω 6 c ), summed feature 4 (anteiso-C 17:1 B and/or iso-C 17:1 I), and summed feature 9 (iso-C 17:1 ω 9 c and/or 10-methyl C 16:0 ). The polar lipids included one phosphatidylethanolamine, one unidentified aminophospholipid, one unidentified phospholipid, three unidentified aminolipids, and one unknown lipid. The phenotypic, chemotaxonomic, and phylogenetic analyses suggest that strain P51 T is a novel species of the genus Echinicola , for which the name Echinicola salinicaeni sp. nov. is proposed. The type strain was P51 T (KCTC 82513 T = MCCC 1K04413 T ).