Fungal degradation of chlorpyrifos by Verticillium sp. DSP in pure cultures and its use in bioremediation of contaminated soil and pakchoi

Fang, Hua; Xiang, Yue; Hao, Yi Jie; Chu, Xiao; Pan, Xue; Yu, Jing; Yu, Yun Long

doi:10.1016/j.ibiod.2007.10.001

Cited by 95 publications

(40 citation statements)

References 37 publications

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“…Penicillium vermiculatum Hastings and Coster (1981) Phanerochaete chrysosporium Bumpus et al (1993) Saccharomyces cerevisiae Lal and Lal (1987) Trichoderma Trichoderma harzianum Hastings and Coster (1981) Trichoderma viride Mukherjee and Gopal (1996) Verticillium sp. Yu et al (2006), Fang et al (2008) Algae Chlorella vulgaris Mukherjee et al (2004) Phytoremediation (remove chlorpyrifos)…”

Section: Biodegradationmentioning

confidence: 99%

Chlorpyrifos: pollution and remediation

2015

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The widespread use of pesticides in modern agriculture is of increasing concern due to environmental contamination and subsequent biodiversity loss. Chlorpyrifos is a toxic organophosphate pesticide. Repeated applications of chlorpyrifos modify the soil microbial community structure and pose potential health risks to the other nontargets. Chlorpyrifos has been reported as the second most commonly detected pesticide in food and water. Extensive use of chlorpyrifos in agriculture and persistence in the environment have raised public concern and demand for safe technologies to overcome the pollution and toxicity problems. Here, we review pollution and toxicity issues associated with chlorpyrifos use and discuss strategies to solve pesticide contamination. Chlorpyrifos, previously shown to be resistant to enhanced degradation, has now been proved to undergo enhanced microbe-mediated decay. Here, special emphasis is given to degradation methods such as ozonation, Fenton treatment, photodegradation, and advanced oxidation processes along with microbial degradation. Finally, we focus on degradation process at enzyme and molecular levels which will enable us to elucidate the exact degradative pathway involved in biodegradation.

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Section: Biodegradationmentioning

confidence: 99%

Chlorpyrifos: pollution and remediation

2015

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“…Similar results were obtained by Shalaby and Abdalla (2006), who reported that addition of microbial fertilizer to carbofuran and ethoprophos-treated soil fell to the half life values (t 1/2 ) from 8.86 and 8.04 days to 3.38 and 4.8 days, respectively. In the same respect, Fang et al (2008) reported that the degradation rates of chlorpyrifos in inoculated soils with Verticillium sp. were 3.61, 1.50 and 1.10 times faster in comparison with the sterilized soil, previously chlorpyrifos-untreated soil, and previously chlorpyrifos-treated soil under laboratory conditions they also recorded that in contrast to the controls, the half-lives of chlorpyrifos were significantly shortened by 10.9% and 17.6% in treated pakchoi (Brassica chinensis L.), 12.0% and 37.1% in inoculated soils, respectively, in the greenhouse and open field.…”

Section: Methodsmentioning

confidence: 87%

The Influence of Soil Microorganisms and Bio- or -Organic Fertilizers on Dissipation of Some Pesticides in Soil and Potato Tubers

Shalaby¹,

Abdou²

2010

Journal of Plant Protection Research

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Abstract:The influence of soil microorganisms, biofertilizer and compost fertilization on the persistence of the two organphosphorus insecticides, chlorpyrifos, ethoprophos and carbamate insecticide, carbofuran were studied under semifield experimental conditions.Residue analysis of the initial samples of the three applied pesticides, chlorpyrifos, ethoprophos and carbofuran was relatively high (68.3, 76.0 and 80.9 ppm, respectively) in uncultivated, unfertilized and unsterilized soil. These amounts were decreased to 10.12, 14.6 and 12.0 ppm showing 85.18, 80.79 and 85.17% loss, respectively at 6 weeks after treatments. The initial deposits of these pesticides in potato cultivated soils (control) were 70.77, 74.17 and 81.17 ppm, respectively, graduate dissipation of tested pesticides was noticed through the successive intervals. At the end of the experimental period, residues detected revealed 93.0, 91.5 and 94.37% loss, respectively.Addition of certain bioactive (microbal and compost ) amendments was able to induce the pesticide degradation in the contaminated soil (the highest degradation levels was noticed in biofertilized soil, > 99.99, 99.33 and 96.11%). On the other hands, obtained data clearly showed that microorganisms living in soil play role in pesticide biodegradation. In other words, the percentages of loss of chlorpyrifos, ethoprophos and carbofuran residues were 86.35, 83.91 and 82.32% in sterilized soils, respectively, at 6 weeks after treatments. Obtained data indicated also, the residual values of tested insecticides on or in potato tubers were more than the maximum residue limits (MRL) in all treatments, this means that the tested insecticides have a translocation and accumulating properties in potato tubers.

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“…Recently, Adelowo et al [41] stated that release of phosphate ion was an indication that the first step in organophosphonates degradation by fungus was cleavage of the CarbonPhosphorus (C-P) bond. According to Fang et al [16] Degradation rates of insecticide chlorpyrifos in inoculated soils with microorganisms were 3.61, 1.50 and 1.10 times faster in comparison with the sterilized soil, previously chlorpyrifosuntreated soil. CO 2 percentage in the soil treated with insecticides and inoculated with fungi was highest than in control, these reflected the activity of the total soil microbial populations.…”

Section: Resultsmentioning

confidence: 99%

“…Degradation of chlorpyrifos in the contaminated soils was found to significantly increase with the addition of Verticillium sp. Degradation rates of chlorpyrifos in inoculated soils were faster in comparison with the sterilized soil, previously chlorpyrifos-untreated soil, and previously chlorpyrifos-treated soil under laboratory conditions [16]. Detoxifying OPs with a number of enzymes have been discovered and the majority of them belong to the class of phosphotriesterases (PTE).…”

Section: Introductionmentioning

confidence: 99%