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A novel Gram-stain positive, spore-forming, aerobic actinomycete, designated strain NEAU-QTH3-11, was isolated from muddy soil collected from a stream in Qitaihe, Heilongjiang Province, northeast China and characterised using a polyphasic approach. The 16S rRNA gene sequence analysis showed that strain NEAU-QTH3-11 belongs to the genus Streptomyces and is closely related to Streptomyces rhizosphaerihabitans NBRC 109807 (99.38%) and Streptomyces mirabilis JCM 4791 (99.03%). Phylogenetic analysis based on the 16S rRNA gene sequences indicated that the strain formed a cluster with S. rhizosphaerihabitans NBRC 109807 and Streptomyces siamensis NBRC 108799 (98.62%). The menaquinones were identified as MK-9(H), MK-9(H) and MK-9(H). The phospholipid profile was found to consist of diphosphatidylglycerol, phosphatidylethanolamine, phosphatidylinositol, an unidentified phospholipid and an unidentified lipid. The major fatty acids were identified as anteiso-C, iso-C, C and C. However, multilocus sequence analysis based on five house-keeping genes (atpD, gyrB, rpoB, recA and trpB), low DNA-DNA hybridization results and some phenotypic, physiological and biochemical properties could differentiate the strain from its close relatives in the genus Streptomyces. Therefore, strain NEAU-QTH3-11 is considered to represent a novel species of the genus Streptomyces, for which the name Streptomyces lutosisoli sp. nov. is proposed, with NEAU-QTH3-11 (=DSM 42165=CGMCC 4.7198) as the type strain.
This article was published in the following journal.
Name: Antonie van Leeuwenhoek
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