Abstract
A Gram-stain-positive, non-motile, yellow and rod-shaped actinobacterium, designated strain Brt-AT, isolated from oil-contaminated soil, grew at 15-40 °C, at pH 5.5-10.0 and at 0-2 % (w/v) NaCl concentration. This strain was characterized by a polyphasic approach. The 16S rRNA gene sequence analysis showed that strain Brt-AT belonged to the genus Tessaracoccus and is closely related to Tessaracoccus rhinocerotis YIM 101269T, Tessaracoccus flavescens SST-39T, Tessaracoccus defluvii LNB-140T and Tessaracoccus flavus RP1T (99.03, 97.00, 96.88, and 96.46 % gene sequence similarity, respectively). The predominant respiratory quinone was MK-9(H4); the major polar lipids were phosphatidylglycerol and diphosphatidylglycerol; the predominant polyamines were spermine and spermidine; and the major fatty acids were anteiso-C15 : 0 and iso-C15 : 0. The cell-wall peptidoglycan contained ll-diaminopimelic acid; and glucose and ribose were detected as diagnostic sugars from whole-cell hydrolysates. The DNA G+C content was 68.1 mol%. The DNA-DNA relatedness between strain Brt-AT and its closely related species of the genus Tessaracoccus were between 55.0-44.0 %, which fall below the threshold value of 70 % for the strain to be considered as nov...Continue Reading
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