Layton AC, Muccini M, Ghosh MM, Sayler GS
The Center for Environmental Biotechnology, The University of Tennessee, Knoxville, Tennessee 37996-1605, USA.
Appl Environ Microbiol. 1998 Dec;64(12):5023-6. doi: 10.1128/AEM.64.12.5023-5026.1998.
A bioluminescent reporter strain, Ralstonia eutropha ENV307(pUTK60), was constructed for the detection of polychlorinated biphenyls by inserting the biphenyl promoter upstream of the bioluminescence genes. In the presence of a nonionic surfactant, which enhances the solubility of chlorinated biphenyls, bioluminescence was induced three- to fourfold over background by biphenyl, monochlorinated biphenyls, and Aroclor 1242. The minimum detection limits for these compounds ranged from 0.15 mg/liter for 4-chlorobiphenyl to 1.5 mg/liter for Aroclor 1242.
通过将联苯启动子插入生物发光基因上游,构建了一株用于检测多氯联苯的生物发光报告菌株,即真养产碱菌ENV307(pUTK60)。在非离子表面活性剂(可提高氯化联苯的溶解度)存在的情况下,联苯、单氯联苯和Aroclor 1242诱导的生物发光比背景值高出三到四倍。这些化合物的最低检测限范围为:4-氯联苯为0.15毫克/升,Aroclor 1242为1.5毫克/升。