Abstract
A Gram-stain-positive, aerobic actinomycete, designated strain BMP B8144T, was isolated from desert soil, in Xinjiang province, northwest China. The isolate produced scanty aerial mycelium and fragmented substrate mycelium on most tested media. Cell-wall hydrolysates contained meso-diaminopimelic acid, galactose and mannose. The diagnostic phospholipids were diphosphatidylglycerol, phosphatidylethanolamine, phosphatidylhydroxylethanolamine, phosphatidylinositol, and phosphatidylinositol mannosides. The major fatty acids included iso-C16 : 0, C17 : 1 ω8c and iso-C15 : 0. The predominant menaquinones were MK-9(H4) and MK-10(H4). The DNA G+C content was 70.4 mol% (genome). Based on the 16S rRNA gene sequence analysis on EzBioCloud server, strain BMP B8144T showed the closest similarities to Saccharothrix lopnurensis YIM LPA2hT (98.9 %) and 'Saccharothrix yanglingensis' Hhs.015 (98.6 %). However, it can be distinguished from the closest strains based on the low levels of DNA-DNA relatedness (59.3±1.8 and 47.9±2.3 %, respectively). A combination of morphological, chemotaxonomic and phylogenetic characteristics, strain BMP B8144T represents a novel species of the genus Saccharothrix, for which the name Saccharothrix deserti sp. nov. is proposed. The type strain is BMP B8144T (=CGMCC 4.7490T=KCTC 49001T).
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