An alkaliphilic and moderately halophilic actinobacterium, designated strain GP10-3T, was isolated from Populus euphratica collected from the southern edge of Taklimakan desert, Xinjiang, China. Cells of this strain were Gram-stain-positive, non-motile and non-spore-forming short rods. Strain GP10-3T grew optimally at 37 °C on LB agar media in the presence of 5–10 % (w/v) NaCl at pH 9.0. The menaquinones were MK-7, MK-8 and MK-9. The major fatty acids (>10 %) were anteiso-C17 : 0, anteiso-C15 : 0 and iso-C16 : 0. The peptidoglycan type was variation A4α, l-Lys-l-Glu. The polar lipids consisted of diphosphatidylglycerol, phosphatidylglycerol, phosphatidylglycolipid, phosphatidylcholine, phosphatidylinositol, glycolipid and an unidentified phospholipid. The DNA G+C content was 67.4 mol%. Phylogenetic analysis based on 16S rRNA gene sequence showed that strain GP10-3T belonged to the genus Nesterenkonia, sharing 94.6–96.9 % sequence similarity with the type strains of species within this genus with validly published names. Based on the evidence of the polyphasic taxonomic study, strain GP10-3T represents a novel species of the genus Nesterenkonia, for which the name Nesterenkonia populi sp. nov. is proposed. The type strain is GP10-3T ( = DSM 27959T = KCTC 29119T).
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Funding
This study was supported by the:
National Natural Sciences Foundation of China
(Award 81172963 and 81373308)
Ministry of Science and Technology of China
(Award 2012ZX09301-002-001-018)
Ministry of Education of China
(Award 20111106110032)
Natural Sciences Foundation of Beijing
(Award 7133249)
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