标题：Polaribacter aquimarinus sp. nov., isolated from the surface of a marine red alga
作者：Xu, Wei; Chen, Xu-Yang; Wei, Xiang-Tao; Lu, De-Chen; Du, Zong-Jun
作者机构：[Xu, Wei; Chen, Xu-Yang; Wei, Xiang-Tao; Lu, De-Chen; Du, Zong-Jun] Shandong Univ, Marine Coll, Weihai 264209, Peoples R China.; [Du, Zong-Jun] Shan 更多
通讯作者地址：[Du, ZJ]Shandong Univ, Marine Coll, Weihai 264209, Peoples R China.
来源：ANTONIE VAN LEEUWENHOEK INTERNATIONAL JOURNAL OF GENERAL AND MOLECULAR MICROBIOLOGY
关键词：Polaribacter; 16S rRNA gene; Phylogenetic analysis
摘要：A Gram-stain negative, non-motile, asporogenous, aerobic and rod-shaped bacterial strain, designated ZY113(T), was isolated from the surface of a marine red alga collected from the coast in Weihai, Shandong Province, China. Strain ZY113(T) was found to grow at 4-37 degrees C (optimum at 28-30 degrees C), with 1.0-7.0% (w/v) NaCl (optimum 2.0-3.0%) and at pH 6.0-9.0 (optimum 7.0-8.0). Phylogenetic analysis based on 16S rRNA gene sequences revealed that strain ZY113(T) is a member of the genus Polaribacter, with Polaribacter dokdonensis KCTC 12392(T) as a close relative (97.4% similarity). The sole respiratory quinone was found to be menaquinone 6 (MK-6) and the major fatty acids were identified as iso-C-15:0, iso-C-15:0 3-OH and iso-C-13:0. The polar lipids were found to consist of phosphatidylethanolamine, two unidentified aminolipids and three unidentified lipids. The G + C content of the genomic DNA was determined to be 30.1 mol%. On the basis of phenotypic, genotypic and phylogenetic analysis, strain ZY113(T) is considered to represent a novel species of the genus Polaribacter, for which the name Polaribacter aquimarinus sp. nov. is proposed. The type strain is ZY113(T) (= KCTC 62374(T) = MCCC 1H00296(T)).