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Marinimicrobium locisalis sp. nov., isolated from a marine solar saltern, and emended description of the genus Marinimicrobium

Korea Research Institute of Bioscience and Biotechnology (KRIBB), PO Box 115, Yusong, Taejon, Republic of Korea

Correspondence
Jung-Hoon Yoon
jhyoon{at}kribb.re.kr

A Gram-negative, motile and rod-shaped bacterial strain, designated ISL-43^T, was isolated from a marine solar saltern of the Yellow Sea, Korea, and its taxonomic position was investigated by means of a polyphasic study. Strain ISL-43^T grew optimally at pH 7.0–8.0 and 30 °C and in the presence of approximately 2 % NaCl. It contained Q-8 as the predominant ubiquinone and C_{16 : 0}, C_{19 : 0}8c, C_{16 : 1}7c and/or iso-C_{15 : 0} 2-OH, and C_{18 : 1}7c as the major fatty acids. The DNA G+C content was 58.4 mol%. Phylogenetic analyses based on 16S rRNA gene sequences showed that strain ISL-43^T fell within the genus Marinimicrobium, clustering with Marinimicrobium agarilyticum M18^T with a bootstrap value of 100 %. Strain ISL-43^T exhibited 16S rRNA gene sequence similarity values of 98.1 and 95.5 % to M. agarilyticum M18^T and Marinimicrobium koreense M9^T, respectively. Strain ISL-43^T exhibited DNA–DNA relatedness values of 17 and 10 % to M. agarilyticum KCTC 12357^T and M. koreense KCTC 12356^T, respectively. On the basis of phenotypic, phylogenetic and genetic data, strain ISL-43^T represents a novel species within the genus Marinimicrobium, for which the name Marinimicrobium locisalis sp. nov. is proposed. The type strain is ISL-43^T (=KCTC 22484^T=CCUG 56757^T).