Bioremediation of fipronil by a Bacillus firmus isolate from soil

Chemosphere
Kousik MandalV K Gupta

Abstract

Persistence of fipronil, a new molecule in extensive use against various insect pests is causing serious problems to the environment. Bacillus firmus was isolated by selective enrichment from soil samples collected from sugar fields with known history of pesticide usage and evaluated for metabolization of fipronil in clay loam soil. Soil samples in 50 g aliquotes were fortified with fipronil @ 0.50-1.50 mg kg(-1) and inoculated with B. firmus cells (45×10(7) CFU mL(-1)) and incubated at 25 °C. Each sample in triplicates was drawn periodically up to 56 d and residual fipronil contents analyzed by gas liquid chromatograph. Fipronil residues were not detected after 35 d at lower doses of fipronil (@ 0.50, 0.75 and 1.00 mg kg(-1)). However, at higher doses (@ 1.25 and 1.50 mg kg(-1)) than this total metabolization of fipronil could be observed after 35 and 42 d, respectively. Thus whereas, B. firmus proved its potential in efficient metabolization of fipronil, the period required for the same was dose dependent. Amongst various metabolites of fipronil degradation, fipronil sulfide was found to be the main metabolite followed by fipronil sulfone and fipronil amide. Though, desulfinyl metabolite earlier reported as one of the main me...Continue Reading

References

Apr 1, 2000·Applied and Environmental Microbiology·M HayatsuS Tokuda
Feb 20, 2003·Journal of Agricultural and Food Chemistry·Asmae AajoudMichel Tissut
Jun 15, 2007·Journal of Environmental Science and Health. Part. B, Pesticides, Food Contaminants, and Agricultural Wastes·Jennifer C AnhaltWilliam C Koskinen
Aug 30, 2008·Journal of Agricultural and Food Chemistry·Kunde LinJay Gan
Oct 7, 2008·The Science of the Total Environment·Huihua TanJianqiang Li
Mar 1, 2012·Bulletin of Environmental Contamination and Toxicology·Rajinder KumarV K Gupta
Oct 2, 2012·Indian Journal of Microbiology·Sameer A Barghouthi
Dec 1, 2012·Ecotoxicology and Environmental Safety·Kousik Mandal, Balwinder Singh

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Citations

Mar 15, 2015·Current Opinion in Biotechnology·Damian E Helbling
Oct 4, 2019·Scientific Reports·Edoardo PuglisiPier Sandro Cocconcelli
May 15, 2021·Environmental Research·Ngangbam Sarat SinghDileep Kumar Singh
Sep 30, 2021·Applied Microbiology and Biotechnology·Zhe ZhouShaohua Chen

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