Idiomarina planktonica sp. nov., isolated from a saline lake in Qinghai, China----中国科学院微生物研究所

科研成果

论文题目:	Idiomarina planktonica sp. nov., isolated from a saline lake in Qinghai, China
作者:	Zhong Zhi Ping, Liu Ying, Liu Hong-Can, Wang Fang, Song Lei, Liu Zhi-Pei*
联系作者:	Liu Zhi-Pei*
刊物名称:	Int J Syst Evol Microbiol
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年份:	2014
影响因子:	2.632
论文下载:	http://ijs.sgmjournals.org/content/early/2014/07/11/ijs.0.065938-0.long
摘要:	A Gram-negative bacterium, strain TS-T11T, was isolated from Tuosu Lake, a saline lake (salinity 5.4 %, w/w) in Qaidam basin, Qinghai province, China. Its taxonomic position was determined by using a polyphasic approach. Cells of strain TS-T11T were non-spore-forming rods, 0.6-0.8 mum wide and 0.8-2.2 mum long, and motile by means of a single polar flagellum. Strain TS-T11T was strictly heterotrophic and aerobic. Catalase- and oxidase-positive. Growth was observed in the presence of 0.5-11.0 % (w/v) NaCl (optimum, 4.0-6.0 %) and at 4-40 degrees C (optimum, 30-35 degrees C) and pH 6.0-10.5 (optimum, pH 7.5-8.5). Strain TS-T11T contained iso-C15:0, iso-C17:0 and iso-C17:1omega9c as the predominant fatty acids (>10 %). The major respiratory quinone was Q-8. The polar lipids consisted of a mixture of phosphatidylethanolamine (PE), phosphatidylglycerol (PG), diphosphatidylglycerol (DPG) and nine uncharacterized phospholipids. The DNA G+C content was 46.8 mol % (Tm). Phylogenetic trees based on 16S rRNA gene sequences showed that strain TS-T11T was associated with the genus Idiomarina, and showed highest 16S rRNA gene sequence similarity to Idiomarina aestuarii KYW314T (97.4 %) and Idiomarina salinarum ISL-52T (97.4 %). DNA-DNA relatedness of strain TS-T11T to Idiomarina aestuarii JCM 16344T and Idiomarina salinarum DSM 21900T was 22.2 +/- 2.4 and 11.5 +/- 1.6 %, respectively. Based on the data presented above, it is concluded that strain TS-T11T represents a novel species of the genus Idiomarina, for which the name Idiomarina planktonica sp. nov. is proposed. The type strain is TS-T11T (=CGMCC 1.12458T=JCM 19263T).