期刊
LETTERS IN APPLIED MICROBIOLOGY
卷 61, 期 4, 页码 403-410出版社
WILEY
DOI: 10.1111/lam.12476
关键词
Arthrobacter nicotianae; bioremediation; degradation; metabolites; Pentachloronitrobenzene (PCNB)
资金
- Agricultural Product Quality and Safety of World Bank Loan Project [2011-Z24]
- Special Fund for Ginseng Industrial Development of Jilin province
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.
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