Bacterial degradation of three dithioate pesticides

Barik, S.; Munnecke, Douglas M.; Fletcher, John S.

doi:10.1016/0141-4607(84)90008-8

Cited by 12 publications

(6 citation statements)

References 11 publications

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“…The growth substrate has two effects on cometabolic process: first, it may simulate cell growth and enhance the transformation of the nongrowth substrate (Grant and Betts, 2004); second, it may act as a cosubstrate in xenobiotic metabolism by inducing certain enzymatic pathways that both the growth substrate and the nongrowth substrate may share (Aziz et al, 1999;Girbal et al, 2000). It has been verified by Barik et al (1984) and Bourquin (1977) that malathion was degraded more rapidly in the environment when certain growth substrates were provided. However, there were only few reports that described malathion degradation with cometabolism, and its cometabolic mechanism was not clear.…”

Section: Introductionmentioning

confidence: 99%

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Biodegradation of malathion by Acinetobacter johnsonii MA19 and optimization of cometabolism substrates

Xie

Liu

et al. 2009

Journal of Environmental Sciences

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To enhance the removal efficiency of malathion in the wastewater from organophosphate pesticide mill, a bacterium, Acinetobacter johnsonii MA19, that could degrade malathion with cometabolism was isolated from malathion-polluted soil samples using enrichment culture techniques. Four kinds of additional compounds, sodium succinate, sodium acetate, glucose, and fructose were tested to choose a favorite carbon source for the cometabolism of strain MA19. The results showed that sodium succinate and sodium acetate could promote malathion biodegradation and cell growth. The investigation results of the effects of sodium succinate concentrations on the malathion biodegradation indicated that the more sodium succinate supplied resulted in quick degradation of malathion and fast cells multiplied. Zero-order kinetic model was appropriate to describe the malathion biodegradation when the concentration of sodium succinate was more than 0.5144 g/L. The degradation rate constant (K) reached the maximum value of 3.5837 mg/(L·h) when the mass ratio of sodium succinate to malathion was 128.6 mg/mg. The aquatic toxicity of the malathion was evaluated using the test organism, Limnodrilus hoffmeisteri. The data obtained suggested that the toxicity of malathion could be ignored after 84 h biodegradation. Our result demonstrates the potential for using bacterium A. johnsonii MA19 for malathion biodegradation and environmental bioremediation when some suitable conventional carbon sources are supplied.

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Section: Introductionmentioning

confidence: 99%

“…Several strains that can utilize malathion as sole phosphorus source or carbon source were successfully isolated from soil and sludge samples (Barik et al, 1984;Rosenberg and Alexander, 1979). Besides microorganisms, some enzymes, such as Fusarium oxysporum f. sp.…”

Section: Introductionmentioning

confidence: 99%

Biodegradation of malathion by Acinetobacter johnsonii MA19 and optimization of cometabolism substrates

Xie

Liu

et al. 2009

Journal of Environmental Sciences

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“…Microbial degradation is an important way to cope with malathion contamination for the degradation process can be greatly accelerated with the help of microorganisms [ 30 ]. To date, several bacteria and fungi have been reported to degrade malathion, using different pathways involving hydrolases, esterases, phosphatases, and oxidoreductases [ 27 , 30 , 31 , 32 , 33 ]. Rhodococcus rhodochrous also shows malathion degradation activity, but the related genes and catabolic pathway have not been illuminated [ 34 ].…”

Section: Introductionmentioning

confidence: 99%

Environmental Adaptability and Organic Pollutant Degradation Capacity of a Novel Rhodococcus Species Derived from Soil in the Uninhabited Area of the Qinghai-Tibet Plateau

Huang

Ning

et al. 2022

Microorganisms

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The Qinghai-Tibet Plateau (QTP) is known for extreme natural environments and, surprisingly, has been reported to contain widespread organic pollutants. Rhodococcus can survive a variety of extreme environments and degrade many organic contaminants. Here, we isolated a Rhodococcus strain (FXJ9.536 = CGMCC 4.7853) from a soil sample collected in the QTP. Phylogenomic analysis indicated that the strain represents a novel Rhodococcus species, for which the name Rhodococcus tibetensis sp. nov. is proposed. Interestingly, R. tibetensis FXJ9.536 maintained a fast growth rate and degraded 6.2% of p-nitrophenol (4-NP) and 50.0% of malathion even at 10 °C. It could degrade 53.6% of 4-NP and 99.9% of malathion at a moderate temperature. The genome of R. tibetensis FXJ9.536 contains 4-hydroxyphenylacetate 3-monoxygenase and carboxylesterase genes, which are likely associated with the degradation of 4-NP and malathion, respectively. Further genomic analysis revealed that the strain might employ multiple strategies to adapt to the harsh QTP environment. These include synthesizing cold shock proteins, compatible solutes, secondary metabolites, and storage compounds, utilizing inorganic compounds as energy and nutrition sources, as well as degrading a range of organic pollutants. Overall, our study reveals the potential of a QTP-derived new actinobacterial species for environmental adaptation and remediation in cold regions.

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“…The mineral salt medium (MSM) used during the experiments had the following composition per liter of deionized water: 0.1 g K 2 HPO 4 , 0.2 g MgSO 4 , 0.001 g FeSO 4 , 1.0 g (NH 4 ) 2 SO 4 , 1.0 g NaCl, and 0.0033 g NaMoO 4 (Barik et al, 1984). Technical malathion (95 %) with molecular weight of 330 g/mol was obtained from Alphyte Co., Algeria.…”

Section: Microorganisms and Cultivation Mediamentioning

confidence: 99%

“…Little information is available concerning degradation of malathion by activated sludge culture (Barik et al, 1984;Kanazawa, 1987 Evaluation of substrate inhibition becomes an important consideration in the treatment of toxic compounds in engineered systems such as activated sludge processes (Hao et al, 2002), and mathematical modeling can be helpful for understanding the behavior of biological processes and predicting the component concentrations in the system (Tziotzios et al, 2008). The kinetics of biodegradation can be normally described by a cell growth model ( µ x ) or a substrate utilization model ( r s ).…”

Section: Introductionmentioning

confidence: 99%

Comparison of different models of substrate inhibition in aerobic batch biodegradation of malathion

Tazdaït¹,

Abdi²,

Grib³

et al. 2013

Turkish J Eng Env Sci

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Abstract:In this study, the biodegradation of malathion by a culture of acclimated indigenous activated sludge was investigated under aerobic conditions. Specific substrate consumption rates ( rs) of the culture under different initial malathion concentrations of from 5 mg/L to 140 mg/L were calculated. The results showed the potential for using local activated sludge for malathion biodegradation. However, malathion exhibited inhibition of substrate degradation rate at 140 mg/L. Various substrate inhibition models were compared by fitting them to the experimental data using Statistica 7.0 software. Experimentally it was observed that the kinetic biodegradation of malathion was best described by both the Andrews and Yano and Koga models, which gave high coefficients of determination (0.97 and 0.98, respectively). On the other hand, the degradation ability of the activated sludge was found to be weak when the pesticide was used as the sole source of sulfur or phosphorus.

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Bacterial degradation of three dithioate pesticides

Cited by 12 publications

References 11 publications

Biodegradation of malathion by Acinetobacter johnsonii MA19 and optimization of cometabolism substrates

Biodegradation of malathion by Acinetobacter johnsonii MA19 and optimization of cometabolism substrates

Environmental Adaptability and Organic Pollutant Degradation Capacity of a Novel Rhodococcus Species Derived from Soil in the Uninhabited Area of the Qinghai-Tibet Plateau

Comparison of different models of substrate inhibition in aerobic batch biodegradation of malathion

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