Biodegradation of pentachloronitrobenzene by Arthrobacter nicotianae DH19

文献类型： 外文期刊

第一作者： Wang, Y.

作者： Wang, Y.;Gao, J.;Wang, C.;Li, A.

作者机构：

关键词： Arthrobacter nicotianae;bioremediation;degradation;metabolites;Pentachloronitrobenzene (PCNB)

期刊名称：LETTERS IN APPLIED MICROBIOLOGY （ 影响因子：2.858； 五年影响因子：2.776 ）

ISSN：

年卷期：

页码：

收录情况： SCI

摘要： A pentachloronitrobenzene (PCNB)-degrading bacterial strain was identified as Arthrobacter nicotianae based on morphological, physiological and biochemical tests, and 16S rRNA gene sequences analysis. The strain could grow on mineral salt medium (MSM) containing PCNB as the sole carbon source. Under optimal conditions (pH 6.85, 30 degrees C and inoculum biomass amount of 1.45 g l(-1)), more than 90% residues of PCNB were degraded by strain DH19 within 7 days. Strain DH19 could efficiently degrade dichlorodiphenyl trichloroethane, hexachlorocyclohexane, cypermethrin and cyhalothrin. Metabolites from PCNB degradation were identified by using gas chromatography (GC) coupled with triple quadrupole mass spectrometry. A possible degradation pathway for PCNB was deduced. This is the first report of PCNB-degrading strain DH19 isolated from the rhizospheric soil. Therefore, strain DH19 could potentially be employed in bioremediation of PCNB.

分类号： Q939

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