Microbial Degradation of Organophosphate Pesticides: A Review

Kumar, Shardendu; Kaushik, Garima; Dar, Mohd Ashraf; Nimesh, Surendra; López-Chuken, Ulrico Javier; Villarreal-Chiu, Juan Francisco

doi:10.1016/s1002-0160(18)60017-7

Cited by 247 publications

(108 citation statements)

References 81 publications

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“…Cell density, protease, and keratinase activities measuring from individuals were used to evaluate the dissimilarity between distinct dilutions. Approximately 21 % (5) and 92 % (22) of the diluted replicates displayed no cell growth from dilution 10 −9 and 10 −10 , respectively. Dilution 10 −10 was excluded based on the observed low growth and lack of sufficient degradation efficiency.…”

Section: Resultsmentioning

confidence: 99%

“…Biodegradation is widely used in agricultural and industrial fields, especially when dealing with substances, which are difficult to dissolve and/or resistant to decomposition under mild conditions (2, 3). Large number of microorganisms have been isolated and characterized for their efficient capacity to degrade recalcitrant molecules such as organophosphorus compounds, being the most commercially favored group of pesticides, also posing a risk to human health (4, 5). Another example is the utilization of microbes to metabolize lignocellulose materials which represent a renewable carbon source with potential application as biofuel (6).…”

Section: Introductionmentioning

confidence: 99%

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Construction of simplified microbial consortia to degrade recalcitrant materials based on enrichment and dilution-to-extinction cultures

Kang

Jacquiod

Herschend

et al. 2019

Preprint

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The capacity of microbes degrading recalcitrant materials has been extensively explored from environmental remediation to industrial applications. Although significant achievements were obtained with single strains, focus is now going toward the use of microbial consortia because of advantages in terms of functional stability and efficiency. While consortia assembly attempts were made from several known single strains, another approach consists in obtaining consortia from complex environmental microbial communities in search for novel microbial species, genes and functions. However, assembling efficient microbial consortia from complex environmental communities is far from trivial due to large diversity and biotic interactions at play. Here we propose a strategy containing enrichment and dilution-to-extinction cultures to construct simplified microbial consortia (SMC) for keratinous waste management, from complex environmental communities. Gradual dilutions were performed from a keratinolytic microbial consortium, and dilution 10−9 was selected to construct a SMC library. Further compositional analysis and keratinolytic activity assays demonstrated that microbial consortia were successfully simplified, without impacting their biodegradation capabilities. These SMC possess promising potential for efficient keratinous valorization. More importantly, this reasoning and methodology could be transferred to other topics involving screening for simplified communities for biodegradation, thus considerably broadening its application scope.ImportanceMicrobial consortia have got more and more attention and extensive applications due to their potential advantages. However, a high diversity of microbes is likely to hide uncontrollable risks in practice specific to novel strains and complicated interaction networks. Exploring a convenient and efficient way to construct simplified microbial consortia is able to broaden the applied scope of microbes. This study presents the approach based on enrichment and dilution-to-extinction cultures, which gain abundance microbial consortia including some without losing efficiency from the enriched functional microbial community. The microbial interactions at the strain level were evaluated by using compositional identification and correlation analysis, which contribute to revealing the roles of microbes in the degradation process of recalcitrant materials. Our findings provide a systematic scheme to achieve optimizing microbial consortia for biodegradation from an environmental sample, could be readily applied to a range of recalcitrant materials management from environmental remediation to industrial applications.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Construction of simplified microbial consortia to degrade recalcitrant materials based on enrichment and dilution-to-extinction cultures

Kang

Jacquiod

Herschend

et al. 2019

Preprint

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“…The longest half-life value (t 1/2 ) of CYP was in the sterilized soil (24.8 days), and the shortest was in the soil amended with SiO 2 (6.41 days). This may be due to the microbial degradation mechanism, which is summarized in three parts [93]. First, the target was adsorption; it passed onto the cell membrane surface and was a dynamic balance process that was also critical.…”

Section: Discussionmentioning

confidence: 99%

Reduction of soil contamination by cypermethrin residues using phytoremediation with Plantago major and some surfactants

Aioub

Qie

et al. 2019

Environ Sci Eur

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Background: Surfactant-enhanced phytoremediation is an eco-friendly treatment for reducing soil contamination. Cypermethrin (CYP) is one of the most widely used pyrethroid insecticides against different pests, and its use causes soil contamination. The aim of this study was to investigate the removal of CYP from contaminated soil by Plantago major (PM) and some surfactants. For the first time, we documented the uptake and translocation of CYP from the soil and used some strategies to improve the effectiveness of this technology, which involved the use of various surfactants to solubilize the contaminant. In a pot experiment, four surfactants [liquid silicon dioxide (SiO 2 , 750 mg L −1 ), 2-hydroxypropyl-beta-cyclodextrin (HPßCD, 1%), humic acid (HA, 10 mg L −1 ) and Tween 80 (Tw80, 9.2 mg L −1 )] were used to facilitate the phytoremediation of CYP (10 µg g −1 )-contaminated soil by PM.Results: Our data showed that amending the soil with PM plus SiO 2 significantly reduced the amount of CYP in the soil and highly increased the concentrations of CYP in the plant roots and leaves. The longest half-life value (t 1/2 ) of CYP was in the sterilized soil treatment (24.8 days), and the shortest was in the soil with PM amended with SiO 2 (6.41 days). The half-life value (t 1/2 ) of CYP in soil with PM alone was 10.0 days. Through in vitro experiments, a batch equilibrium technique showed that hydroxypropyl-ß-cyclodextrin (HPßCD) is the best surfactant to most efficiently eliminate CYP from the soil. However, in the greenhouse experiment, the addition of SiO 2 to soil cultivated with PM was more effective than the use of other solubility-enhancing surfactants in the removal of significant amounts of CYP (p > 0.05) from the contaminated soil. Conclusions:The integration of SiO 2 + PM is the best treatment and is recommended for minimizing plant contaminant contents in CYP-contaminated soil. which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.

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“…A number of bacteria that are capable of degrading OP pesticides have been identified from soil samples from different parts of the world [15]. These include Pseudomonas pseudoalcaligenes, Pseudomonas diminuta, Agrobacterium radiobacter, Alteromonas haloplanktis and Saccharomyces cerevisiae, Pseudomonas monteilii, and Geobacillus stearothermophilus [13,16,17].…”

Section: Bacterial Phosphotriesterase 3d Structuresmentioning

confidence: 99%

“…Moreover, mutation at the substrate binding pocket (H257Y/L303T) also enhances the k cat /K m of YT mutant towards G-type nerve gases as compared to the wild type from 2.4 × 10 5 to 2 × 10 6 ; 1.5 × 10 4 to 5 × 10 5 ; and 2.3 × 10 5 to 8 × 10 5 M −1 s −1 for sarin (GB), soman (GD), and cyclosarin (GF), respectively [9,38]. The manipulation of large and small pockets of PTE allows the researcher to enhance, diminish, or reverse the hydrolysis of the substrate [6,7,15]. These approaches have enhanced the hydrolysis of the most toxic enantiomers of GB and GD by over two orders of magnitude and approximately 25-fold for the nerve agent VX [11,39].…”

Section: Mechanism Of Hydrolysis and Stereoselectivity Of Ptementioning

confidence: 99%

Microbial Phosphotriesterase: Structure, Function, and Biotechnological Applications

et al. 2019

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The role of phosphotriesterase as an enzyme which is able to hydrolyze organophosphate compounds cannot be disputed. Contamination by organophosphate (OP) compounds in the environment is alarming, and even more worrying is the toxicity of this compound, which affects the nervous system. Thus, it is important to find a safer way to detoxify, detect and recuperate from the toxicity effects of this compound. Phosphotriesterases (PTEs) are mostly isolated from soil bacteria and are classified as metalloenzymes or metal-dependent enzymes that contain bimetals at the active site. There are three separate pockets to accommodate the substrate into the active site of each PTE. This enzyme generally shows a high catalytic activity towards phosphotriesters. These microbial enzymes are robust and easy to manipulate. Currently, PTEs are widely studied for the detection, detoxification, and enzyme therapies for OP compound poisoning incidents. The discovery and understanding of PTEs would pave ways for greener approaches in biotechnological applications and to solve environmental issues relating to OP contamination.

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Microbial Degradation of Organophosphate Pesticides: A Review

Cited by 247 publications

References 81 publications

Construction of simplified microbial consortia to degrade recalcitrant materials based on enrichment and dilution-to-extinction cultures

Construction of simplified microbial consortia to degrade recalcitrant materials based on enrichment and dilution-to-extinction cultures

Reduction of soil contamination by cypermethrin residues using phytoremediation with Plantago major and some surfactants

Microbial Phosphotriesterase: Structure, Function, and Biotechnological Applications

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