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Nesterenkonia halophila sp. nov., a moderately halophilic, alkalitolerant actinobacterium isolated from a saline soil

Wen-Jun Li^1,, Yu-Qin Zhang^1,2,, Peter Schumann³, Hong-Yu Liu², Li-Yan Yu², Yue-Qin Zhang^2,, Erko Stackebrandt³, Li-Hua Xu¹ and Cheng-Lin Jiang¹

¹ The Key Laboratory for Microbial Resources of the Ministry of Education, PR China, and Laboratory for Conservation and Utilization of Bio-Resources, Yunnan Institute of Microbiology, Yunnan University, Kunming, Yunnan 650091, PR China
² Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100050, PR China
³ DSMZ – Deutsche Sammlung von Mikroorganismen und Zellkulturen GmbH, Inhoffenstrasse 7B, D-38124 Braunschweig, Germany

Correspondence
Wen-Jun Li
wjli{at}ynu.edu.cn

A Gram-positive, non-motile, moderately halophilic, alkalitolerant actinobacterium, designated strain YIM 70179^T, was isolated from a saline soil sample collected from Xinjiang Province, north-west China, and was subjected to a polyphasic taxonomic study. The cell-wall peptidoglycan type of strain YIM 70179^T was A4, L-Lys–Gly–L-Glu. Cells of the isolate contained diphosphatidylglycerol, phosphatidylglycerol, phosphatidylinositol and an unknown glycolipid, MK-8 as major menaquinone and anteiso-C_{15 : 0}, anteiso-C_{17 : 0} and iso-C_{16 : 0} as major fatty acids. The DNA G+C content was 68.4 mol%. Phylogenetic analysis based on 16S rRNA gene sequences showed that strain YIM 70179^T fell within the radiation of species of the genus Nesterenkonia. Levels of 16S rRNA gene sequence similarity between strain YIM 70179^T and the type strains of recognized Nesterenkonia species were below 97 %, except to Nesterenkonia halobia DSM 20541^T (99.6 %), but these two strains exhibited a low level of DNA–DNA relatedness (18.4 %). Based on genetic and phenotypic evidence, it is proposed that strain YIM 70179^T represents a novel species of the genus Nesterenkonia, for which the name Nesterenkonia halophila sp. nov. is proposed. The type strain is YIM 70179^T (=DSM 16378^T =KCTC 19048^T).

The GenBank/EMBL/DDBJ accession number for the 16S rRNA gene sequence of strain YIM 70179^T is AY820953.

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