Streptomyces lopnurensis sp. nov., an actinomycete isolated from soil
2014
Zheng, Bei | Han, Xiao-Xue | Xia, Zhan-Feng | Wan, Chuan-Xing | Zhang, Li Li
A novel actinomycete, designated strain TRM 49590 ᵀ, was isolated from a soil sample from Lop Nur in Xinjiang Province, China. Strain TRM 49590 ᵀ was aerobic, Gram-staining-positive, with an optimum NaCl concentration for growth of 1.5 % (w/v) and an optimum temperature for growth of 28–37 °C. The aerial mycelium was sparse, cylindrical and smooth-surfaced with irregular branches on ISP medium 4. The whole-cell sugars of strain TRM 49590 ᵀ were ribose and glucose. The diagnostic diamino acid contained ll -diaminopimelic acid. The predominant menaquinones were MK-9(H ₆) and MK-9(H ₈), with MK-9(H ₄) and MK-10(H ₆) present in smaller amounts. The major fatty acids were iso-C ₁₆ : ₀, anteiso-C ₁₅ : ₀ and anteiso-C ₁₇ : ₀. The G + C content of the genomic DNA was 62.2 mol%. The major polar lipids were diphosphatidylglycerol, phosphatidylethanolamine, phosphatidylcholine, phosphatidylinositol and phosphatidylinositol mannoside. Phylogenetic analysis based on 16S rRNA gene sequences showed that strain TRM 49590 ᵀ belongs to the genus Streptomyces with a sequence similarity of 97.16 % with the most closely related species Streptomyces sodiiphilus . Based on these observations, strain TRM 49590 ᵀ is proposed to represent a novel species of the genus Streptomyces for which the name Streptomyces lopnurensis sp. nov. is suggested. The type strain is TRM 49590 ᵀ (= CCTCC AA 2013018 ᵀ = NRRL B59109 ᵀ).
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