In this study, we tested the ability of Streptomyces to use for their growth benzene, toluene, ethylbenzene, and o-, m-, p-xylenes as sole source of carbon and energy. These bacteria were isolated from agricultural soils and activated sludge samples from a wastewater treatment plant. The results show that Streptomyces are capable of degrading at least one of the BTEX compounds. Among them, 3 isolates from activated sludge called (U, F and V) and a single isolate (SA13) isolated from an agricultural soil, can use as the sole source of carbon and energy, all of these BTEX compounds at concentrations of 1500 mg/L. Based on the analysis of the 16S rRNA gene sequence, two active strains were identified as Streptomyces fimicarius, Streptomyces cavourensis, Streptomyces flavogriseus and Streptomyces pratensis. These strains can be excellent candidates for the bioremediation of the telluric and aquatic sites polluted by these xenobiotics.

中文翻译：

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从活性污泥和农业土壤中分离出的链霉菌属对 BTEX 化合物的有氧降解

在这项研究中，我们测试了 Streptomyces 使用苯、甲苯、乙苯和邻二甲苯、间二甲苯、对二甲苯作为唯一碳和能量来源的能力。这些细菌是从农业土壤和废水处理厂的活性污泥样品中分离出来的。结果表明链霉菌能够降解至少一种 BTEX 化合物。其中，从活性污泥中分离出的 3 种分离物（U、F 和 V）和从农业土壤中分离出的单一分离物（SA13）可以作为唯一的碳源和能源，所有这些 BTEX 化合物的浓度均为 1500 毫克/L。通过对16S rRNA基因序列的分析，鉴定出2株活性菌株，分别为Streptomyces fimicarius、Streptomyces cavourensis、Streptomyces flavogriseus和Streptomyces pratensis。