TY - JOUR

T1 - Whole cell bioreporter for the estimation of oil contamination

AU - Li, Chuan

AU - Zhang, Dayi

AU - Song, Yizhi

AU - Jiang, Bo

AU - Li, Guanghe

AU - Huang, Wei E.

PY - 2013/7

Y1 - 2013/7

N2 - Oil contamination has been one of the most common environmental pollution due to its threat to both human health and ecosystems. It is difficult for the application of conventional chemical analysis to detect oil contamination in-situ, estimate bioavailability and rapidly assess the environmental risk. In this study, two bioreporters were employed for the rapid and direct detection of oil content and genotoxicity in a cutting oil contaminated site in China. Acinetobacter baylyi ADPWHalk and ADPWHrecA are chromosomally-based bioreporter for the detection of alkanes and genotoxicity separately. The reporter gene cluster luxCDABE enabled cells to express bioluminescence in the presence of contaminants. Calibration curve of bioreporter response to oil in the soils illustrated a log-log linear relationship between oil content and bioluminescence expression, indicating that whole cell bioreporter can be used as a semi-quantitative analysis method to estimate the oil contamination. The oil contamination in soils detected by ADPWHalk (5760 and 1090 mg/kg) were comparable with those obtained by GC/MS (7070 and 1490 mg/kg). Furthermore, the genotoxicity bioreporter ADPWHrecA showed that the ecological genotoxicity of the soil samples were equivalent to 33-36 mg mitomycin C per kilogram soils. The results suggested that bioreporter sensing could be a rapid, simple, low-costly and in-situ detection method with unique ability for the detection of toxicity and bioavailability, and it can be a useful and complementary tool to chemical analysis.

AB - Oil contamination has been one of the most common environmental pollution due to its threat to both human health and ecosystems. It is difficult for the application of conventional chemical analysis to detect oil contamination in-situ, estimate bioavailability and rapidly assess the environmental risk. In this study, two bioreporters were employed for the rapid and direct detection of oil content and genotoxicity in a cutting oil contaminated site in China. Acinetobacter baylyi ADPWHalk and ADPWHrecA are chromosomally-based bioreporter for the detection of alkanes and genotoxicity separately. The reporter gene cluster luxCDABE enabled cells to express bioluminescence in the presence of contaminants. Calibration curve of bioreporter response to oil in the soils illustrated a log-log linear relationship between oil content and bioluminescence expression, indicating that whole cell bioreporter can be used as a semi-quantitative analysis method to estimate the oil contamination. The oil contamination in soils detected by ADPWHalk (5760 and 1090 mg/kg) were comparable with those obtained by GC/MS (7070 and 1490 mg/kg). Furthermore, the genotoxicity bioreporter ADPWHrecA showed that the ecological genotoxicity of the soil samples were equivalent to 33-36 mg mitomycin C per kilogram soils. The results suggested that bioreporter sensing could be a rapid, simple, low-costly and in-situ detection method with unique ability for the detection of toxicity and bioavailability, and it can be a useful and complementary tool to chemical analysis.

KW - Acinetobacter baylyi ADP1

KW - alkane

KW - bioreporter

KW - cutting oil

KW - genotoxicity

KW - mineral oil

KW - oil contamination

M3 - Journal article

VL - 12

SP - 1353

EP - 1358

JO - Environmental Engineering and Management Journal

JF - Environmental Engineering and Management Journal

SN - 1582-9596

IS - 7

ER -