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Li Q, Zhou Q, Chen Y, Hu K, Sarrà M, Li J, Liu A, Zou L, Liu S. Whole-genome sequencing of Sphingobium baderi SC-1 and identification of a crucial 3-phenoxybenzoic acid-degrading gene. Front Microbiol 2024; 15:1361335. [PMID: 38646623 PMCID: PMC11026547 DOI: 10.3389/fmicb.2024.1361335] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2023] [Accepted: 03/22/2024] [Indexed: 04/23/2024] Open
Abstract
As an efficient degradation strain, Sphingobium baderi SC-1 can breakdown 3-phenoxybenzoic acid (3-PBA) with high proficiency. To investigate the internal factors that regulate this process, we conducted whole-genome sequencing and successfully identified the pivotal 3-PBA-degrading gene sca (1,230 bp). After sca was expressed in engineered bacteria, a remarkable degradation efficiency was observed, as 20 mg/L 3-PBA was almost completely decomposed within 24 h. The phenol was formed as one of the degradation products. Notably, in addition to their ability to degrade 3-PBA, the resting cells proficiently degraded 4'-HO-3-PBA and 3'-HO-4-PBA. In conclusion, we successfully identified and validated sca as the pivotal enzyme responsible for the efficient degradation of 3-PBA from Sphingomonas baderi, providing a crucial theoretical foundation for further explorations on the degradation potential of SC-1.
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Affiliation(s)
- Qin Li
- College of Food Science, Sichuan Agricultural University, Ya’an, Sichuan, China
| | - Qiao Zhou
- College of Food Science, Sichuan Agricultural University, Ya’an, Sichuan, China
| | - Yuan Chen
- College of Food Science, Sichuan Agricultural University, Ya’an, Sichuan, China
| | - Kaidi Hu
- College of Food Science, Sichuan Agricultural University, Ya’an, Sichuan, China
| | - Montserrat Sarrà
- Departament d’Enginyeria Química, Biològica i Ambiental, Escola d’Enginyeria, Universitat Autònoma de Barcelona, Bellaterra, Barcelona, Spain
| | - Jianlong Li
- College of Food Science, Sichuan Agricultural University, Ya’an, Sichuan, China
| | - Aiping Liu
- College of Food Science, Sichuan Agricultural University, Ya’an, Sichuan, China
| | - Likou Zou
- College of Resources, Sichuan Agricultural University, Chengdu, Sichuan, China
| | - Shuliang Liu
- College of Food Science, Sichuan Agricultural University, Ya’an, Sichuan, China
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2
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Yu X, Wang S, Tang J, Zhang Y, Zhou X, Peng C, Chen X, Zhang Q. Microbial Fermentation as an Efficient Method for Eliminating Pyrethroid Pesticide Residues in Food: A Case Study on Cyfluthrin and Aneurinibacillus aneurinilyticus D-21. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2024; 72:4393-4404. [PMID: 38359781 DOI: 10.1021/acs.jafc.3c09024] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/17/2024]
Abstract
The microbial fermentation of food has emerged as an efficient means to eliminate pesticide residues in agricultural products; however, the specific degradation characteristics and mechanisms remain unclear. In this study, a Gram-positive bacterium, Aneurinibacillus aneurinilyticus D-21, isolated from fermented Pixian Douban samples exhibited the capability to degrade 45 mg/L of cyfluthrin with an efficiency of 90.37%. Product analysis unveiled a novel cyfluthrin degradation pathway, involving the removal of the cyanide group and ammoniation of the ester bond into an amide. Whole genome analysis discovered the enzymes linked to cyfluthrin degradation, including nitrilase, esterase, carbon-nitrogen ligases, and enzymes associated with aromatic degradation. Additionally, metabolome analysis identified 140 benzenoids distributed across various aromatic metabolic pathways, further substantiating D-21's catabolic capability toward aromatics. This study underscores the exceptional pyrethroid degradation prowess of A. aneurinilyticus D-21, positioning it as a promising candidate for the biotreatment of pesticide residues in food systems.
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Affiliation(s)
- Xuan Yu
- School of Food and Bioengineering, Xihua University, Chengdu 610039, Sichuan, China
- Food Microbiology Key Laboratory of Sichuan Province, Xihua University, Chengdu 610039, Sichuan, China
| | - Su Wang
- School of Food and Bioengineering, Xihua University, Chengdu 610039, Sichuan, China
| | - Jie Tang
- School of Food and Bioengineering, Xihua University, Chengdu 610039, Sichuan, China
- Food Microbiology Key Laboratory of Sichuan Province, Xihua University, Chengdu 610039, Sichuan, China
- Chongqing Key Laboratory of Speciality Food Co-Built by Sichuan and Chongqing, Xihua University, Chengdu 610039, Sichuan, China
| | - Yingyue Zhang
- School of Food and Bioengineering, Xihua University, Chengdu 610039, Sichuan, China
| | - Xuerui Zhou
- School of Food and Bioengineering, Xihua University, Chengdu 610039, Sichuan, China
| | - Chuanning Peng
- School of Food and Bioengineering, Xihua University, Chengdu 610039, Sichuan, China
| | - Xuejiao Chen
- School of Food and Bioengineering, Xihua University, Chengdu 610039, Sichuan, China
- Food Microbiology Key Laboratory of Sichuan Province, Xihua University, Chengdu 610039, Sichuan, China
| | - Qing Zhang
- School of Food and Bioengineering, Xihua University, Chengdu 610039, Sichuan, China
- Food Microbiology Key Laboratory of Sichuan Province, Xihua University, Chengdu 610039, Sichuan, China
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3
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Lumlong K, Siritham C, Mak WC, Kanatharana P, Thavarungkul P, Thammakhet-Buranachai C. A poly(o-phenylenediamine) coated aluminum garter spring micro-solid phase extractor for pyrethroids in chili. Food Chem 2024; 434:137430. [PMID: 37703775 DOI: 10.1016/j.foodchem.2023.137430] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2023] [Revised: 08/25/2023] [Accepted: 09/05/2023] [Indexed: 09/15/2023]
Abstract
An aluminum garter spring coated with poly(o-phenylenediamine) (PoPD) was developed as a sorbent for the micro-solid phase extraction of seven pyrethroids, bifenthrin, fenpropathrin, lambda-cyhalothrin, cyfluthrin, permethrin, cypermethrin and deltamethrin from fresh chili, chili flakes, and curry pastes. The extraction was qualified and quantified by a gas chromatograph coupled with an electron capture detector. Under optimum conditions, the linearity was at a concentration range of 10-3000 µg kg-1. The limits of detection and limits of quantitation of 9.3 to 34.2 μg kg-1, and 11.8 to 48.6 μg kg-1, respectively, were obtained with good sorbent-to-sorbent reproducibility, and outstanding reusability. When applied to determine the seven pyrethroids in chili samples, some pyrethroids were detected up to 30.3 ± 1.2 μg kg-1. This proposed method is simple, with potential applications in the trace analysis of other compounds.
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Affiliation(s)
- Kednipa Lumlong
- Division of Physical Science, Faculty of Science, Prince of Songkla University, Hat Yai, Songkhla 90110, Thailand; Center of Excellence for Trace Analysis and Biosensor, Prince of Songkla University, Hat Yai, Songkhla 90110, Thailand; Center of Excellence for Innovation in Chemistry, Faculty of Science, Prince of Songkla University, Hat Yai, Songkhla 90110, Thailand
| | - Charinrat Siritham
- Regional Medical Sciences Center 10 Ubon Ratchathani, Mueang Ubon Ratchathani, Ubon Ratchathani 34000, Thailand
| | - Wing Cheung Mak
- Department of Biomedical Engineering, Chinese University of Hong Kong, Ma Liu Shui, Hong Kong
| | - Proespichaya Kanatharana
- Division of Physical Science, Faculty of Science, Prince of Songkla University, Hat Yai, Songkhla 90110, Thailand; Center of Excellence for Trace Analysis and Biosensor, Prince of Songkla University, Hat Yai, Songkhla 90110, Thailand; Center of Excellence for Innovation in Chemistry, Faculty of Science, Prince of Songkla University, Hat Yai, Songkhla 90110, Thailand
| | - Panote Thavarungkul
- Division of Physical Science, Faculty of Science, Prince of Songkla University, Hat Yai, Songkhla 90110, Thailand; Center of Excellence for Trace Analysis and Biosensor, Prince of Songkla University, Hat Yai, Songkhla 90110, Thailand; Center of Excellence for Innovation in Chemistry, Faculty of Science, Prince of Songkla University, Hat Yai, Songkhla 90110, Thailand
| | - Chongdee Thammakhet-Buranachai
- Division of Physical Science, Faculty of Science, Prince of Songkla University, Hat Yai, Songkhla 90110, Thailand; Center of Excellence for Trace Analysis and Biosensor, Prince of Songkla University, Hat Yai, Songkhla 90110, Thailand; Center of Excellence for Innovation in Chemistry, Faculty of Science, Prince of Songkla University, Hat Yai, Songkhla 90110, Thailand.
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4
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Zhang Y, Tang J, Wang S, Zhou X, Peng C, Zhou H, Wang D, Lin H, Xiang W, Zhang Q, Cai T, Yu X. Mechanism of deltamethrin biodegradation by Brevibacillus parabrevis BCP-09 with proteomic methods. CHEMOSPHERE 2024; 350:141100. [PMID: 38171393 DOI: 10.1016/j.chemosphere.2023.141100] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/25/2023] [Revised: 11/02/2023] [Accepted: 12/30/2023] [Indexed: 01/05/2024]
Abstract
Ester-containing deltamethrin pesticides are widely used in farmland and have inevitable side effects on the biosphere and human health. Microbia have been used for efficient degradation of deltamethrin, but the related mechanism and enzyme characteristics have not been elucidated. In this study, a species Brevibacillus parabrevis BCP-09 could degrade up to 75 mg L-1 deltamethrin with a degradation efficiency of 95.41%. Proteomic and genomic methods were used to explore its degradation mechanism. Enzymes belonged to hydrolases, oxidases and aromatic compound degrading enzymes were expressed enhanced and might participate in the deltamethrin degradtion. RT-PCR experiment and enzyme activity analysis verified the degradation of deltamethrin by bacterial protein. Additionally, the formation of endospores can help strain BCP-09 resist the toxicity of deltamethrin and enhance its degradation. This study supplies a scientific evidence for the application of Brevibacillus parabrevis BCP-09 in the bioremediation of environmental pollution and enriches the resources of deltamethrin-biodegradable proteins.
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Affiliation(s)
- Yingyue Zhang
- School of Food and Bioengineering, Xihua University, Chengdu, 610039, Sichuan, China
| | - Jie Tang
- School of Food and Bioengineering, Xihua University, Chengdu, 610039, Sichuan, China; Food Microbiology Key Laboratory of Sichuan Province, Xihua University, Chengdu, 610039, Sichuan, China; Chongqing Key Laboratory of Speciality Food Co-Built by Sichuan and Chongqing, Xihua University, Chengdu, 610039, China.
| | - Su Wang
- School of Food and Bioengineering, Xihua University, Chengdu, 610039, Sichuan, China
| | - Xuerui Zhou
- School of Food and Bioengineering, Xihua University, Chengdu, 610039, Sichuan, China
| | - Chuanning Peng
- School of Food and Bioengineering, Xihua University, Chengdu, 610039, Sichuan, China
| | - Hu Zhou
- School of Food and Bioengineering, Xihua University, Chengdu, 610039, Sichuan, China
| | - Dan Wang
- School of Food and Bioengineering, Xihua University, Chengdu, 610039, Sichuan, China
| | - Haoran Lin
- School of Food and Bioengineering, Xihua University, Chengdu, 610039, Sichuan, China
| | - Wenliang Xiang
- School of Food and Bioengineering, Xihua University, Chengdu, 610039, Sichuan, China; Food Microbiology Key Laboratory of Sichuan Province, Xihua University, Chengdu, 610039, Sichuan, China
| | - Qing Zhang
- School of Food and Bioengineering, Xihua University, Chengdu, 610039, Sichuan, China; Food Microbiology Key Laboratory of Sichuan Province, Xihua University, Chengdu, 610039, Sichuan, China
| | - Ting Cai
- School of Food and Bioengineering, Xihua University, Chengdu, 610039, Sichuan, China; Food Microbiology Key Laboratory of Sichuan Province, Xihua University, Chengdu, 610039, Sichuan, China
| | - Xuan Yu
- School of Food and Bioengineering, Xihua University, Chengdu, 610039, Sichuan, China; Food Microbiology Key Laboratory of Sichuan Province, Xihua University, Chengdu, 610039, Sichuan, China
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5
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Zhang G, Dilday S, Kuesel RW, Hopkins B. Phytochemicals, Probiotics, Recombinant Proteins: Enzymatic Remedies to Pesticide Poisonings in Bees. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2024; 58:54-62. [PMID: 38127782 PMCID: PMC10785755 DOI: 10.1021/acs.est.3c07581] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/14/2023] [Revised: 11/30/2023] [Accepted: 11/30/2023] [Indexed: 12/23/2023]
Abstract
The ongoing global decline of bees threatens biodiversity and food safety as both wild plants and crops rely on bee pollination to produce viable progeny or high-quality products in high yields. Pesticide exposure is a major driving force for the decline, yet pesticide use remains unreconciled with bee conservation since studies demonstrate that bees continue to be heavily exposed to and threatened by pesticides in crops and natural habitats. Pharmaceutical methods, including the administration of phytochemicals, probiotics (beneficial bacteria), and recombinant proteins (enzymes) with detoxification functions, show promise as potential solutions to mitigate pesticide poisonings. We discuss how these new methods can be appropriately developed and applied in agriculture from bee biology and ecotoxicology perspectives. As countless phytochemicals, probiotics, and recombinant proteins exist, this Perspective will provide suggestive guidance to accelerate the development of new techniques by directing research and resources toward promising candidates. Furthermore, we discuss practical limitations of the new methods mentioned above in realistic field applications and propose recommendations to overcome these limitations. This Perspective builds a framework to allow researchers to use new detoxification techniques more efficiently in order to mitigate the harmful impacts of pesticides on bees.
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Affiliation(s)
- Ge Zhang
- Department of Entomology, Washington State University, Pullman, Washington 99164, United States
| | - Sam Dilday
- Department of Entomology, Washington State University, Pullman, Washington 99164, United States
| | - Ryan William Kuesel
- Department of Entomology, Washington State University, Pullman, Washington 99164, United States
| | - Brandon Hopkins
- Department of Entomology, Washington State University, Pullman, Washington 99164, United States
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6
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Chen WJ, Zhang W, Lei Q, Chen SF, Huang Y, Bhatt K, Liao L, Zhou X. Pseudomonas aeruginosa based concurrent degradation of beta-cypermethrin and metabolite 3-phenoxybenzaldehyde, and its bioremediation efficacy in contaminated soils. ENVIRONMENTAL RESEARCH 2023; 236:116619. [PMID: 37482127 DOI: 10.1016/j.envres.2023.116619] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/15/2023] [Revised: 07/01/2023] [Accepted: 07/10/2023] [Indexed: 07/25/2023]
Abstract
Beta-cypermethrin is one of the widely used pyrethroid insecticides, and problems associated with the accumulation of its residues have aroused public attention. Thus, there is an urgent need to effectively remove the beta-cypermethrin that is present in the environment. Biodegradation is considered a cost-effective and environmentally friendly method for removing pesticide residues. However, the beta-cypermethrin-degrading microbes that are currently available are not optimal. In this study, Pseudomonas aeruginosa PAO1 was capable of efficiently degrading beta-cypermethrin and its major metabolite 3-phenoxybenzaldehyde in water/soil environments. Strain PAO1 could remove 91.4% of beta-cypermethrin (50 mg/L) in mineral salt medium within 120 h. At the same time, it also possesses a significant ability to metabolize 3-phenoxybenzaldehyde-a toxic intermediate of beta-cypermethrin. The Andrews equation showed that the maximum substrate utilization concentrations of beta-cypermethrin and 3-phenoxybenzaldehyde by PAO1 were 65.3558 and 49.6808 mg/L, respectively. Box-Behnken design-based response surface methodology revealed optimum conditions for the PAO1 strain-based degradation of beta-cypermethrin as temperature 30.6 °C, pH 7.7, and 0.2 g/L inoculum size. The results of soil remediation experiments showed that indigenous micro-organisms helped to promote the biodegradation of beta-cypermethrin in soil, and beta-cypermethrin half-life in non-sterilized soil was 6.84 days. The bacterium transformed beta-cypermethrin to produce five possible metabolites, including 3-phenoxybenzyl alcohol, methyl 2-(4-hydroxyphenoxy)benzoate, diisobutyl phthalate, 3,5-dimethoxyphenol, and 2,2-dimethyl-1-(4-phenoxyphenyl)propanone. Among them, methyl 2-(4-hydroxyphenoxy)benzoate and 3,5-dimethoxyphenol were first identified as the intermediate products during the beta-cypermethrin degradation. In addition, we propose a degradation pathway for beta-cypermethrin that is metabolized by strain PAO1. Beta-cypermethrin could be biotransformed firstly by hydrolysis of its carboxylester linkage, followed by cleavage of the diaryl bond and subsequent metabolism. Based on the above results, P. aeruginosa PAO1 could be a potent candidate for the beta-cypermethrin-contaminated environmental bioremediation.
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Affiliation(s)
- Wen-Juan Chen
- Guangdong Laboratory for Lingnan Modern Agriculture, Integrative Microbiology Research Centre, College of Plant Protection, South China Agricultural University, Guangzhou, 510642, China
| | - Wenping Zhang
- Guangdong Laboratory for Lingnan Modern Agriculture, Integrative Microbiology Research Centre, College of Plant Protection, South China Agricultural University, Guangzhou, 510642, China; Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming, 650500, China
| | - Qiqi Lei
- Guangdong Laboratory for Lingnan Modern Agriculture, Integrative Microbiology Research Centre, College of Plant Protection, South China Agricultural University, Guangzhou, 510642, China
| | - Shao-Fang Chen
- Guangdong Laboratory for Lingnan Modern Agriculture, Integrative Microbiology Research Centre, College of Plant Protection, South China Agricultural University, Guangzhou, 510642, China
| | - Yaohua Huang
- Guangdong Laboratory for Lingnan Modern Agriculture, Integrative Microbiology Research Centre, College of Plant Protection, South China Agricultural University, Guangzhou, 510642, China
| | - Kalpana Bhatt
- Department of Food Science, Purdue University, West Lafayette, IN, USA
| | - Lisheng Liao
- Guangdong Laboratory for Lingnan Modern Agriculture, Integrative Microbiology Research Centre, College of Plant Protection, South China Agricultural University, Guangzhou, 510642, China.
| | - Xiaofan Zhou
- Guangdong Laboratory for Lingnan Modern Agriculture, Integrative Microbiology Research Centre, College of Plant Protection, South China Agricultural University, Guangzhou, 510642, China.
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7
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Borowik A, Wyszkowska J, Zaborowska M, Kucharski J. Microbial Diversity and Enzyme Activity as Indicators of Permethrin-Exposed Soil Health. Molecules 2023; 28:4756. [PMID: 37375310 DOI: 10.3390/molecules28124756] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2023] [Revised: 05/22/2023] [Accepted: 06/12/2023] [Indexed: 06/29/2023] Open
Abstract
Owing to their wide range of applications in the control of ticks and insects in horticulture, forestry, agriculture and food production, pyrethroids pose a significant threat to the environment, including a risk to human health. Hence, it is extremely important to gain a sound understanding of the response of plants and changes in the soil microbiome induced by permethrin. The purpose of this study has been to show the diversity of microorganisms, activity of soil enzymes and growth of Zea mays following the application of permethrin. This article presents the results of the identification of microorganisms with the NGS sequencing method, and of isolated colonies of microorganisms on selective microbiological substrates. Furthermore, the activity of several soil enzymes, such as dehydrogenases (Deh), urease (Ure), catalase (Cat), acid phosphatase (Pac), alkaline phosphatase (Pal), β-glucosidase (Glu) and arylsulfatase (Aryl), as well as the growth of Zea mays and its greenness indicators (SPAD), after 60 days of growth following the application of permethrin, were presented. The research results indicate that permethrin does not have a negative effect on the growth of plants. The metagenomic studies showed that the application of permethrin increases the abundance of Proteobacteria, but decreases the counts of Actinobacteria and Ascomycota. The application of permethrin raised to the highest degree the abundance of bacteria of the genera Cellulomonas, Kaistobacter, Pseudomonas, Rhodanobacter and fungi of the genera Penicillium, Humicola, Iodophanus, Meyerozyma. It has been determined that permethrin stimulates the multiplication of organotrophic bacteria and actinomycetes, decreases the counts of fungi and depresses the activity of all soil enzymes in unseeded soil. Zea mays is able to mitigate the effect of permethrin and can therefore be used as an effective phytoremediation plant.
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Affiliation(s)
- Agata Borowik
- Department of Soil Science and Microbiology, Faculty of Agriculture and Forestry, University of Warmia and Mazury in Olsztyn, 10-719 Olsztyn, Poland
| | - Jadwiga Wyszkowska
- Department of Soil Science and Microbiology, Faculty of Agriculture and Forestry, University of Warmia and Mazury in Olsztyn, 10-719 Olsztyn, Poland
| | - Magdalena Zaborowska
- Department of Soil Science and Microbiology, Faculty of Agriculture and Forestry, University of Warmia and Mazury in Olsztyn, 10-719 Olsztyn, Poland
| | - Jan Kucharski
- Department of Soil Science and Microbiology, Faculty of Agriculture and Forestry, University of Warmia and Mazury in Olsztyn, 10-719 Olsztyn, Poland
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8
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Liu Y, Tang S, Wang X, Wang X, Tang X, Wu Q, Huang Z, Ding J. A novel thermostable and salt-tolerant carboxylesterase involved in the initial aerobic degradation pathway for pyrethroids in Glycomyces salinus. JOURNAL OF HAZARDOUS MATERIALS 2023; 451:131128. [PMID: 36893599 DOI: 10.1016/j.jhazmat.2023.131128] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/21/2022] [Revised: 02/25/2023] [Accepted: 03/01/2023] [Indexed: 06/18/2023]
Abstract
The long-term and excessive use of pyrethroid pesticides poses substantial health risks and ecosystem concerns. Several bacteria and fungi have been reported that could degrade pyrethroids. The ester-bond hydrolysis using hydrolases is the initial regulatory metabolic reaction of pyrethroids. However, the thoroughly biochemical characterization of hydrolases involved in this process is limited. Here, a novel carboxylesterase, designated as EstGS1 that could hydrolyze pyrethroid pesticides was characterized. EstGS1 showed low sequence identity (<27.03%) compared to other reported pyrethroid hydrolases and belonged to the hydroxynitrile lyase family that preferred short short-chain acyl esters (C2 to C8). EstGS1 displayed the maximal activity of 213.38 U/mg at 60 °C and pH 8.5 using pNPC2 as substrate, with Km and Vmax were 2.21 ± 0.72 mM and 212.90 ± 41.78 µM/min, respectively. EstGS1 is a halotolerant esterase and remains stable in 5.1 M NaCl. Based on molecular docking and mutational analysis, the catalytic triad of S74-D181-H212 and three other substrate-binding residues I108, S159, and G75 are critical for the enzymatic activity of EstGS1. Additionally, 61 and 40 mg/L of deltamethrin and λ-cyhalothrin were hydrolyzed by 20 U of EstGS1 in 4 h. This work presents the first report on a pyrethroid pesticide hydrolase characterized from a halophilic actinobacteria.
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Affiliation(s)
- Yan Liu
- Engineering Research Center of Sustainable Development and Utilization of Biomass Energy, Ministry of Education, Yunnan Normal University, Kunming 650500, China
| | - Shukun Tang
- Yunnan Institute of Microbiology, Key Laboratory for Conservation and Utilization of Bio-Resource, School of Life Sciences, Yunnan University, Kunming 650091, China
| | - Xu Wang
- Engineering Research Center of Sustainable Development and Utilization of Biomass Energy, Ministry of Education, Yunnan Normal University, Kunming 650500, China
| | - Xiaoliang Wang
- Engineering Research Center of Sustainable Development and Utilization of Biomass Energy, Ministry of Education, Yunnan Normal University, Kunming 650500, China
| | - Xianghua Tang
- Engineering Research Center of Sustainable Development and Utilization of Biomass Energy, Ministry of Education, Yunnan Normal University, Kunming 650500, China
| | - Qian Wu
- Engineering Research Center of Sustainable Development and Utilization of Biomass Energy, Ministry of Education, Yunnan Normal University, Kunming 650500, China
| | - Zunxi Huang
- Engineering Research Center of Sustainable Development and Utilization of Biomass Energy, Ministry of Education, Yunnan Normal University, Kunming 650500, China; Key Laboratory of Yunnan Province for Biomass Energy and Environmental Biotechnology, Yunnan Normal University, Kunming 650500, China
| | - Junmei Ding
- Engineering Research Center of Sustainable Development and Utilization of Biomass Energy, Ministry of Education, Yunnan Normal University, Kunming 650500, China; Key Laboratory of Yunnan Province for Biomass Energy and Environmental Biotechnology, Yunnan Normal University, Kunming 650500, China.
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9
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Lu Q, Pan K, Liu J, Zhang T, Yang L, Yi X, Zhong G. Quorum sensing system effectively enhances DegU-mediated degradation of pyrethroids by Bacillus subtilis. JOURNAL OF HAZARDOUS MATERIALS 2023; 455:131586. [PMID: 37178530 DOI: 10.1016/j.jhazmat.2023.131586] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/27/2023] [Revised: 04/24/2023] [Accepted: 05/04/2023] [Indexed: 05/15/2023]
Abstract
The contamination of the natural environment is a growing concern that threatens all life forms, including microorganisms. Bacteria protect themselves by initiating quorum sensing (QS), a bacterial cell-cell communication, to generate adaptive responses to these pollutants. Bacillus subtilis has a typical QS ComQXPA system that regulates the phosphorylation of the transcription factor DegU (DegU-P), and thus can mediate the expression of various downstream genes under different stress conditions. Herein, we found that cesB, a gene of Bacillus subtilis 168, plays a key role in pyrethroid degradation, and cesB-mediated degradation could be enhanced by coordinating with the ComX communication system. Using β-cypermethrin (β-CP) as a paradigm, we demonstrated that DegU-P increased upon exposure to β-CP, thus facilitating β-CP degradation by binding to the upstream regulatory regions of cesB, leading to the activation of the expression of cesB. Further, we showed that the expression of different levels of phosphorylated DegU in a degU deletion strain resulted in varying degrees of β-CP degradation efficiency, with phosphorylated DegUH12L achieving 78.39% degradation efficiency on the first day, surpassing the 56.27% degradation efficiency in the wild type strain. Consequently, based on the conserved regulatory mechanism of ComQXPA system, we propose that DegU-P-dependent regulation serves as a conserved defense mechanism owing to its ability to fine-tune the expression of genes involved in the degradation of pollutants upon exposure to different pesticides.
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Affiliation(s)
- Qiqi Lu
- National Key Laboratory of Green Pesticide, South China Agricultural University, Guangzhou, China; Key Laboratory of Crop Integrated Pest Management in South China, Ministry of Agriculture, South China Agricultural University, Guangzhou, China; Key Laboratory of Natural Pesticide and Chemical Biology, Ministry of Education, South China Agricultural University, Guangzhou, China
| | - Keqing Pan
- National Key Laboratory of Green Pesticide, South China Agricultural University, Guangzhou, China; Key Laboratory of Crop Integrated Pest Management in South China, Ministry of Agriculture, South China Agricultural University, Guangzhou, China; Key Laboratory of Natural Pesticide and Chemical Biology, Ministry of Education, South China Agricultural University, Guangzhou, China
| | - Jie Liu
- National Key Laboratory of Green Pesticide, South China Agricultural University, Guangzhou, China; Key Laboratory of Crop Integrated Pest Management in South China, Ministry of Agriculture, South China Agricultural University, Guangzhou, China; Key Laboratory of Natural Pesticide and Chemical Biology, Ministry of Education, South China Agricultural University, Guangzhou, China
| | - Tong Zhang
- Guangdong Province Key Laboratory of Microbial Signals and Disease Control, College of Plant Protection, South China Agricultural University, Guangzhou, China
| | - Liying Yang
- National Key Laboratory of Green Pesticide, South China Agricultural University, Guangzhou, China; Key Laboratory of Crop Integrated Pest Management in South China, Ministry of Agriculture, South China Agricultural University, Guangzhou, China; Key Laboratory of Natural Pesticide and Chemical Biology, Ministry of Education, South China Agricultural University, Guangzhou, China
| | - Xin Yi
- National Key Laboratory of Green Pesticide, South China Agricultural University, Guangzhou, China; Key Laboratory of Crop Integrated Pest Management in South China, Ministry of Agriculture, South China Agricultural University, Guangzhou, China; Key Laboratory of Natural Pesticide and Chemical Biology, Ministry of Education, South China Agricultural University, Guangzhou, China.
| | - Guohua Zhong
- National Key Laboratory of Green Pesticide, South China Agricultural University, Guangzhou, China; Key Laboratory of Crop Integrated Pest Management in South China, Ministry of Agriculture, South China Agricultural University, Guangzhou, China; Key Laboratory of Natural Pesticide and Chemical Biology, Ministry of Education, South China Agricultural University, Guangzhou, China.
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10
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Fan X, Zhao M, Wen H, Zhang Y, Zhang Y, Zhang J, Liu X. Enhancement degradation efficiency of pyrethroid-degrading esterase (Est816) through rational design and its application in bioremediation. CHEMOSPHERE 2023; 319:138021. [PMID: 36731665 DOI: 10.1016/j.chemosphere.2023.138021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/17/2022] [Revised: 01/12/2023] [Accepted: 01/29/2023] [Indexed: 06/18/2023]
Abstract
The pervasive use of pyrethroids is seriously hazardous to the environment and even human health. Enzymatic bioremediation is potentially a rapid and environmentally friendly technology to combat the pollution of pyrethroid pesticides. The hydrolysis of ester linkages is the initial and critical enzymatic step in microbial degradation pathways. Here, the versatile and thermostable esterase Est816 was cloned and its new function, pyrethroid-hydrolysis activity, was expanded. To further improve its pyrethroid-hydrolysis ability, Est816 was modified by rational design. After two rounds of mutation, the best-performing mutant, Est816A216V/K238N/M97V, was obtained, which could completely degrade 1 mg/L λ-cyhalothrin, cypermethrin, and deltamethrin within 20 min, and efficiently degrade fenvalerate, reaching over 80% conversion. Degradation activity analyses showed that three substitutions (A216V, K238 N and M97V) were beneficial for enhancing the activity of Est816. Enzymatic characterization showed that Est816A216V/K238N/M97V inherited broad substrate specificity and possessed excellent stability and adaptability over wide ranges of temperature and pH, which is essential for bioremediation in frequently changing conditions. Furthermore, Est816A216V/K238N/M97V had the best degradation effect on all four pyrethroid residues in Panax notoginseng root, with more than 87% conversion after 24 h. Pyrethroid residues in tea, cucumber, and soil were reduced by more than 76%, 80%, and 76%, respectively. Taken together, these findings highlight the great potential of Est816A216V/K238N/M97V in the bioremediation of pyrethroid-contaminated soil and agricultural products.
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Affiliation(s)
- Xinjiong Fan
- College & Hospital of Stomatology, Anhui Medical University, Key Lab. of Oral Diseases Research of Anhui Province, Hefei, 230032, China; School of Basic Medical Sciences, Anhui Medical University, 81 Meishan Rd, Hefei, 230032, Anhui, China
| | - Meng Zhao
- School of Basic Medical Sciences, Anhui Medical University, 81 Meishan Rd, Hefei, 230032, Anhui, China; Minhang Branch, Zhongshan Hospital, Fudan University,170 Xinsong Rd, Shanghai 200000, China
| | - Huamei Wen
- School of Basic Medical Sciences, Anhui Medical University, 81 Meishan Rd, Hefei, 230032, Anhui, China
| | - Yanyu Zhang
- School of Basic Medical Sciences, Anhui Medical University, 81 Meishan Rd, Hefei, 230032, Anhui, China
| | - Yixin Zhang
- School of Basic Medical Sciences, Anhui Medical University, 81 Meishan Rd, Hefei, 230032, Anhui, China
| | - Jing Zhang
- College & Hospital of Stomatology, Anhui Medical University, Key Lab. of Oral Diseases Research of Anhui Province, Hefei, 230032, China.
| | - Xiaolong Liu
- University of Science and Technology of China, Hefei, Anhui 230026, China.
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11
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Zhou X, Tang J, Wang S, Zhang Y, Ye H, Zhang Q, Xiang W, Cai T, Zeng C. Whole genome sequencing and transcriptomics-based characterization of a novel β-cypermethrin-degrading Gordonia alkanivorans GH-1 isolated from fermented foods. CHEMOSPHERE 2023; 320:138017. [PMID: 36736480 DOI: 10.1016/j.chemosphere.2023.138017] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/07/2022] [Revised: 01/28/2023] [Accepted: 01/28/2023] [Indexed: 06/18/2023]
Abstract
Beta-cypermethrin (β-CY) is an organic compound that is widely used as a synthetic pesticide in agriculture and family. Excessive accumulation of β-CY inevitably causes environmental pollution, which has led to food safety and human health concerns. Identification of microorganisms from food sources that are capable of β-CY biodegradation may help prevent pollution due to β-CY accumulation. Here, Gordonia alkanivorans GH-1, which was isolated from the traditional Sichuan fermented food, Pixian Doubanjiang, could not only degrade 82.76% of 50 mg/L β-CY at 96 h, but also degraded the intermediate degradation products including dibutyl phthalate (DBP), benzoic acid (BA) and phenol (Ph). This bacterial strain, thus, effectively improved the efficiency of removal of β-CY and its related metabolites, without being limited by toxic intermediates. Whole genome sequencing and transcriptomics analyses have demonstrated that the bacteria affected the transcription of genes related to cell response and material transport under the stress induced by β-CY, and thereby promoted degradation and transformation of β-CY. Moreover, a complete pathway of β-CY degradation is proposed based on the key genes involved in degradation. This study provides important theoretical significance and reference value for eliminating pesticide residues in agricultural products and food to ensure food safety.
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Affiliation(s)
- Xuerui Zhou
- Food Microbiology Key Laboratory of Sichuan Province, School of Food Science and Bioengineering, Xihua University, Chengdu, 610039, China
| | - Jie Tang
- Food Microbiology Key Laboratory of Sichuan Province, School of Food Science and Bioengineering, Xihua University, Chengdu, 610039, China.
| | - Su Wang
- Food Microbiology Key Laboratory of Sichuan Province, School of Food Science and Bioengineering, Xihua University, Chengdu, 610039, China
| | - Yingyue Zhang
- Food Microbiology Key Laboratory of Sichuan Province, School of Food Science and Bioengineering, Xihua University, Chengdu, 610039, China
| | - Hong Ye
- Food Microbiology Key Laboratory of Sichuan Province, School of Food Science and Bioengineering, Xihua University, Chengdu, 610039, China
| | - Qing Zhang
- Food Microbiology Key Laboratory of Sichuan Province, School of Food Science and Bioengineering, Xihua University, Chengdu, 610039, China
| | - Wenliang Xiang
- Food Microbiology Key Laboratory of Sichuan Province, School of Food Science and Bioengineering, Xihua University, Chengdu, 610039, China
| | - Ting Cai
- Food Microbiology Key Laboratory of Sichuan Province, School of Food Science and Bioengineering, Xihua University, Chengdu, 610039, China
| | - Chaoyi Zeng
- Food Microbiology Key Laboratory of Sichuan Province, School of Food Science and Bioengineering, Xihua University, Chengdu, 610039, China
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12
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Birolli WG, Porto ALM. Esfenvalerate biodegradation by marine fungi is affected by seawater and emulsifier formulation. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:38394-38408. [PMID: 36580257 DOI: 10.1007/s11356-022-24921-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/09/2022] [Accepted: 12/19/2022] [Indexed: 06/17/2023]
Abstract
Pesticides already were detected in the oceans, and their fates require evaluation in these environmental conditions. Therefore, marine-derived fungi were assessed for Esfenvalerate biodegradation, approaching the effects of seawater and use of commercial emulsifiable formulation. Residual pesticide and four metabolites were quantified. Furthermore, kinetics were determined for the three tested strains (Microsphaeropsis sp. CBMAI 1675, Acremonium sp. CBMAI 1676, and Westerdykella sp. CBMAI 1679). These facultative marine fungi biodegraded up to 87 ± 2% of 100 mg L-1 Esfenvalerate in liquid media. However, Esfenvalerate biodegradation was faster in low salinity conditions than in artificial seawater. Moreover, rates of consumption were higher for Esfenvalerate in the pure form than for the commercial emulsifiable formulation. These results suggest that half-life of Esfenvalerate formulated with inert ingredients in seawater can have a double prolongation effect that can contribute to health and environmental issues.
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Affiliation(s)
- Willian Garcia Birolli
- Laboratory of Organic Chemistry and Biocatalysis, São Carlos Institute of Chemistry, University of São Paulo, Avenida João Dagnone, 1100, Ed. Prof. Douglas Wagner Franco, Jd. Santa Angelina, Sao Carlos, SP, 13563-120, Brazil.
| | - André Luiz Meleiro Porto
- Laboratory of Organic Chemistry and Biocatalysis, São Carlos Institute of Chemistry, University of São Paulo, Avenida João Dagnone, 1100, Ed. Prof. Douglas Wagner Franco, Jd. Santa Angelina, Sao Carlos, SP, 13563-120, Brazil
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13
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Hu K, Li J, Zhao T, Zhou Q, Li Q, Hu X, Han G, Li S, Zou L, Liu S. Transcriptomic analysis reveals peripheral pathway in 3-phenoxybenzoic acid degradation by Aspergillus oryzae M-4. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2023; 325:116626. [PMID: 36327606 DOI: 10.1016/j.jenvman.2022.116626] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/01/2022] [Revised: 10/23/2022] [Accepted: 10/23/2022] [Indexed: 06/16/2023]
Abstract
As a major intermediate metabolite of synthetic pyrethroids, the occurrence of 3-phenoxybenzoic acid hinders the decomposition of the parent pesticide and poses uncertain risks to environmental ecology and living organisms. Strain Aspergillus oryzae M-4 was previously reported to degrade 3-PBA and several substances were identified as downstream transformation products (TPs). But the mechanism underlying the cleavage of ether bond remains largely unclear. Here, we attempted to address such concern through identifying the peripheral TPs and analyzing transcriptomics, coupled with serial batch degradation experiments. Analysis results of chromatographic/mass spectrometry suggested that 3-PBA underwent twice hydroxylation, to yield mono- and dihydroxylated 3-PBA successively. In parallel, a mutual transformation between 3-PBA and 3-phenoxybenzyl alcohol (3-PBOH) also existed. The proposal of peripheral pathway represents an important advance towards fully understanding the whole 3-PBA metabolism in M-4. A specific altered metabolization was found for the first time, that is, resting cells of M-4 skipped the reduction step and initiate hydroxylation directly, by comparison with growing cells. Transcriptome analysis indicated that 3-PBA induced the up-regulation of genes related to energy investment, oxidative stress response, membrane transport and DNA repair. In-depth functional interpretation of differential expression genes suggested that the generation 3-PBOH and hydroxylated 3-PBA may be due to the participation of flavin-dependent monooxygenases (FMOs) and cytochrome P450 (CYP450), respectively. This study provides new insight to reveal the biodegradation mechanism of 3-PBA by A. oryzae M-4.
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Affiliation(s)
- Kaidi Hu
- College of Food Science, Sichuan Agricultural University, Ya'an, Sichuan, 625014, PR China
| | - Jianlong Li
- College of Food Science, Sichuan Agricultural University, Ya'an, Sichuan, 625014, PR China
| | - Tianye Zhao
- College of Food Science, Sichuan Agricultural University, Ya'an, Sichuan, 625014, PR China
| | - Qiao Zhou
- College of Food Science, Sichuan Agricultural University, Ya'an, Sichuan, 625014, PR China
| | - Qin Li
- College of Food Science, Sichuan Agricultural University, Ya'an, Sichuan, 625014, PR China
| | - Xinjie Hu
- College of Food Science, Sichuan Agricultural University, Ya'an, Sichuan, 625014, PR China
| | - Guoquan Han
- College of Food Science, Sichuan Agricultural University, Ya'an, Sichuan, 625014, PR China
| | - Shuhong Li
- College of Food Science, Sichuan Agricultural University, Ya'an, Sichuan, 625014, PR China
| | - Likou Zou
- College of Resources, Sichuan Agricultural University, Chengdu, Sichuan, 611130, PR China
| | - Shuliang Liu
- College of Food Science, Sichuan Agricultural University, Ya'an, Sichuan, 625014, PR China.
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14
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Sheng Y, Benmati M, Guendouzi S, Benmati H, Yuan Y, Song J, Xia C, Berkani M. Latest eco-friendly approaches for pesticides decontamination using microorganisms and consortia microalgae: A comprehensive insights, challenges, and perspectives. CHEMOSPHERE 2022; 308:136183. [PMID: 36058371 DOI: 10.1016/j.chemosphere.2022.136183] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/20/2022] [Revised: 08/13/2022] [Accepted: 08/20/2022] [Indexed: 06/15/2023]
Abstract
Pesticides are chemical compounds that are considered toxic to many organisms, including humans. Their elimination from polluted sites attracted the attention of Scientifics in the last decade; Among the various methods used to decontaminate pesticides from the environment, the microbial-algae consortium is a promising bioremediation technology, which implies several advantages as an eco-friendly process that generate biomass produced that could be valorized in the form of bioenergy, In this review, we will discuss the latest eco-friendly approaches using microorganisms to remediate sites contaminated by pesticides, and shows the ability of microbial, algae and their consortium to remove pesticides and the role of different enzymes in degradation processes.
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Affiliation(s)
- Yequan Sheng
- College of Biological and Food Engineering, Anhui Polytechnic University, Wuhu, Anhui, 241000, China; Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, International Innovation Center for Forest Chemicals and Materials, College of Materials Science and Engineering, Nanjing Forestry University, Nanjing, Jiangsu, 210037, China
| | - Mahbouba Benmati
- Biotechnology Laboratory, National Higher School of Biotechnology, BP E66, 25100, Constantine, Algeria
| | - Salma Guendouzi
- Biotechnology Laboratory, National Higher School of Biotechnology, BP E66, 25100, Constantine, Algeria
| | - Hadjer Benmati
- Laboratoire de Biologie et Environnement, Campus Chaab-Erssas, Biopole Université des Frères Mentouri Constantine 1, Ain Bey, 25000 Constantine Algeria
| | - Yan Yuan
- School of Chemistry and Life Science, Suzhou University of Science and Technology, Suzhou, Jiangsu, 215009, PR China
| | - Junlong Song
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, International Innovation Center for Forest Chemicals and Materials, College of Materials Science and Engineering, Nanjing Forestry University, Nanjing, Jiangsu, 210037, China
| | - Changlei Xia
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, International Innovation Center for Forest Chemicals and Materials, College of Materials Science and Engineering, Nanjing Forestry University, Nanjing, Jiangsu, 210037, China.
| | - Mohammed Berkani
- Biotechnology Laboratory, National Higher School of Biotechnology, BP E66, 25100, Constantine, Algeria.
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15
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Whole genome sequencing exploitation analysis of dibutyl phthalate by strain Stenotrophomonas acidaminiphila BDBP 071. FOOD BIOSCI 2022. [DOI: 10.1016/j.fbio.2022.102185] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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16
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Huang Y, Chen WJ, Li J, Ghorab MA, Alansary N, El-Hefny DE, El-Sayyad GS, Mishra S, Zhang X, Bhatt P, Chen S. Novel mechanism and degradation kinetics of allethrin using Bacillus megaterium strain HLJ7 in contaminated soil/water environments. ENVIRONMENTAL RESEARCH 2022; 214:113940. [PMID: 35952736 DOI: 10.1016/j.envres.2022.113940] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/23/2022] [Revised: 07/14/2022] [Accepted: 07/18/2022] [Indexed: 06/15/2023]
Abstract
As a common pyrethroid insecticide, allethrin is widely used for various purposes in agriculture and home applications. At present, allethrin residues have been frequently detected worldwide, yet little is known about the kinetics and degradation mechanisms of this insecticide. In this study, a highly efficient allethrin-degrading bacterium, Bacillus megaterium strain HLJ7, was obtained through enrichment culture technology. Strain HLJ7 can remove 96.5% of 50 mg L-1 allethrin in minimal medium within 11 days. The first-order kinetic analysis of degradation demonstrated that the half-life of allethrin degradation by strain HLJ7 was 3.56 days, which was significantly shorter than the 55.89 days of the control. The Box-Behnken design of the response surface method optimized the degradation conditions for strain HLJ7: temperature 32.18 °C, pH value 7.52, and inoculation amount 1.31 × 107 CFU mL-1. Using Andrews equation, the optimal concentration of strain HLJ7 to metabolize allethrin was determined to be 21.15 mg L-1, and the maximum specific degradation rate (qmax), half-rate constant (Ks) and inhibition coefficient (Ki) were calculated to be 1.80 d-1, 1.85 mg L-1 and 68.13 mg L-1, respectively. Gas chromatography-mass spectrometry identified five intermediate metabolites, suggesting that allethrin could be degraded firstly by cleavage of its carboxylester bond, followed by degradation of the five-carbon ring and subsequent metabolism. The results of soil remediation experiments showed that strain HLJ7 has excellent bioremediation potential in the soils. After 15 days of treatment, about 70.8% of the initial allethrin (50 mg kg-1) was removed and converted into nontoxic intermediate metabolites, and its half-life was significantly reduced in the soils. Taken together, these findings shed light on the degradation mechanisms of allethrin and also highlight the promising potentials of B. megaterium HLJ7 in bioremediation of allethrin-comtaminated environment.
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Affiliation(s)
- Yaohua Huang
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, Guangdong Province Key Laboratory of Microbial Signals and Disease Control, Integrative Microbiology Research Centre, South China Agricultural University, Guangzhou, 510642, China; Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou, 510642, China
| | - Wen-Juan Chen
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, Guangdong Province Key Laboratory of Microbial Signals and Disease Control, Integrative Microbiology Research Centre, South China Agricultural University, Guangzhou, 510642, China; Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou, 510642, China
| | - Jiayi Li
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, Guangdong Province Key Laboratory of Microbial Signals and Disease Control, Integrative Microbiology Research Centre, South China Agricultural University, Guangzhou, 510642, China; Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou, 510642, China
| | - Mohamed A Ghorab
- Wildlife Toxicology Laboratory, Department of Animal Science, Institute for Integrative Toxicology (IIT), Michigan State University, East Lansing, MI, 48824, USA
| | - Nasser Alansary
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, Guangdong Province Key Laboratory of Microbial Signals and Disease Control, Integrative Microbiology Research Centre, South China Agricultural University, Guangzhou, 510642, China; Plant Protection Department, Division of Pesticides, Faculty of Agriculture, Al-Azhar University, Cairo, Egypt
| | - Dalia E El-Hefny
- Pesticide Residues and Environmental Pollution Department, Central of Agricultural Pesticide Laboratory, Agricultural Research Center, Dokki, Giza, Egypt
| | - Gharieb S El-Sayyad
- Department of Microbiology and Immunology, Faculty of Pharmacy, Galala University, New Galala City, Suez, Egypt; Drug Microbiology Lab, Drug Radiation Research Department, National Center for Radiation Research and Technology (NCRRT), Egyptian Atomic Energy Authority (EAEA), Cairo, Egypt
| | - Sandhya Mishra
- Environmental Technologies Division, CSIR-National Botanical Research Institute, Rana Pratap Marg, Lucknow, 226001, India
| | - Xidong Zhang
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, Guangdong Province Key Laboratory of Microbial Signals and Disease Control, Integrative Microbiology Research Centre, South China Agricultural University, Guangzhou, 510642, China; Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou, 510642, China
| | - Pankaj Bhatt
- Department of Agricultural & Biological Engineering, Purdue University, West Lafayette, 47906, USA.
| | - Shaohua Chen
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, Guangdong Province Key Laboratory of Microbial Signals and Disease Control, Integrative Microbiology Research Centre, South China Agricultural University, Guangzhou, 510642, China; Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou, 510642, China.
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17
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He J, Zhang K, Wang L, Du Y, Yang Y, Yuan C. Highly efficient degradation of cypermethrin by a co-culture of Rhodococcus sp. JQ-L and Comamonas sp. A-3. Front Microbiol 2022; 13:1003820. [PMID: 36188009 PMCID: PMC9522905 DOI: 10.3389/fmicb.2022.1003820] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2022] [Accepted: 08/19/2022] [Indexed: 11/13/2022] Open
Abstract
Cypermethrin is an important synthetic pyrethroid pesticide that widely used to control pests in agriculture. However, extensive use has caused its residue and the metabolite 3-phenoxybenzoic acid (3-PBA) to seriously pollute the environments and agricultural products. In this study, a highly efficient cypermethrin-degrading bacterial consortium was acclimated from long-term pyrethroid-contaminated soil. Two strains, designated JQ-L and A-3, were screened from the consortium, and identified as Rhodococcus sp. and Comamonas sp., respectively. Strain JQ-L transformed 100 mg/L of cypermethrin to 3-PBA within 60 h of incubation; however, 3-PBA could not be further degraded by the strain. Strain A-3 utilized 3-PBA as sole carbon for growth, and completely degraded 100 mg/L of 3-PBA within 15 h of incubation. Co-culture of JQ-L and A-3 completely degraded 100 mg/L of cypermethrin within 24 h of incubation. Furthermore, a complete catabolic pathway of cypermethrin and the metabolite 3-PBA by the co-culture was proposed. This study provided a promising strategy for efficient elimination of cypermethrin residue-contaminated environments and agricultural products.
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Affiliation(s)
- Jian He
- College of Rural Revitalization, Jiangsu Open University, Nanjing, China
- Key Laboratory of Agricultural Environmental Microbiology, Ministry of Agriculture, College of Life Sciences, Nanjing Agricultural University, Nanjing, China
| | - Kaiyun Zhang
- Key Laboratory of Agricultural Environmental Microbiology, Ministry of Agriculture, College of Life Sciences, Nanjing Agricultural University, Nanjing, China
| | - Lin Wang
- College of Rural Revitalization, Jiangsu Open University, Nanjing, China
| | - Yingchun Du
- College of Rural Revitalization, Jiangsu Open University, Nanjing, China
| | - Ying Yang
- College of Rural Revitalization, Jiangsu Open University, Nanjing, China
| | - Cansheng Yuan
- College of Rural Revitalization, Jiangsu Open University, Nanjing, China
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18
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Bhatt P, Rene ER, Huang Y, Wu X, Zhou Z, Li J, Kumar AJ, Sharma A, Chen S. Indigenous bacterial consortium-mediated cypermethrin degradation in the presence of organic amendments and Zea mays plants. ENVIRONMENTAL RESEARCH 2022; 212:113137. [PMID: 35358545 DOI: 10.1016/j.envres.2022.113137] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/19/2021] [Revised: 02/23/2022] [Accepted: 03/15/2022] [Indexed: 06/14/2023]
Abstract
Cypermethrin is a toxic pyrethroid insecticide that is widely used in agricultural and household activities. One of the most serious issues is its persistence in the environment, because it is easily transported to the soil and aquatic ecosystem. The biodegradation of cypermethrin is emerging as an environmentally friendly method for large-scale treatment. This study examined the application of a novel binary bacterial combination-based (Bacillus thuringiensis strain SG4 and Bacillus sp. strain SG2) approach used for the enhanced degradation of cypermethrin from the environment. The bacterial strains degraded cypermethrin (80% and 85%) in the presence of external nitrogen sources (KNO3 and NaNO3). Furthermore, when immobilized in agar disc beads, the co-culture degraded cypermethrin (91.3%) with a half-life (t1/2) of 4.3 days compared to 4.9 days using sodium alginate beads. Cereal straw, farmyard manure, press mud compost, fresh cow dung, and gypsum were used as organic amendments in the soil to stimulate cypermethrin degradation. Cereal straw promoted the fastest cypermethrin degradation among the different organic amendments tested, with a t1/2 of 4.4 days. The impact of cypermethrin-degrading bacterial consortium on cypermethrin rhizoremediation was also investigated. Bacterial inoculums exhibited beneficial effects on plant biomass. Moreover, Zea mays and the bacterial partnership substantially enhanced cypermethrin degradation in soil. Six intermediate metabolites were detected during the degradation of cypermethrin, indicating that cypermethrin could be degraded first by the hydrolysis of its carboxyl ester bond, followed by the cleavage of the diaryl linkage and subsequent metabolism. Our findings highlight the promising potential and advantages of the bacterial consortium for the bioremediation of a cypermethrin-contaminated environment.
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Affiliation(s)
- Pankaj Bhatt
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, Guangdong Provincial Key Laboratory of Agricultural & Rural Pollution Abatement and Environmental Safety, Integrative Microbiology Research Centre, South China Agricultural University, Guangzhou, 510642, China; Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou, 510642, China; Department of Microbiology, G. B Pant University of Agriculture and Technology, Pantnagar, U. S Nagar, 263145, India.
| | - Eldon R Rene
- Department of Water Supply, Sanitation and Environmental Engineering, IHE Delft Institute for Water Education, Westvest 7, 2601DA Delft, the Netherlands
| | - Yaohua Huang
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, Guangdong Provincial Key Laboratory of Agricultural & Rural Pollution Abatement and Environmental Safety, Integrative Microbiology Research Centre, South China Agricultural University, Guangzhou, 510642, China; Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou, 510642, China
| | - Xiaozhen Wu
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, Guangdong Provincial Key Laboratory of Agricultural & Rural Pollution Abatement and Environmental Safety, Integrative Microbiology Research Centre, South China Agricultural University, Guangzhou, 510642, China; Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou, 510642, China
| | - Zhe Zhou
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, Guangdong Provincial Key Laboratory of Agricultural & Rural Pollution Abatement and Environmental Safety, Integrative Microbiology Research Centre, South China Agricultural University, Guangzhou, 510642, China; Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou, 510642, China
| | - Jiayi Li
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, Guangdong Provincial Key Laboratory of Agricultural & Rural Pollution Abatement and Environmental Safety, Integrative Microbiology Research Centre, South China Agricultural University, Guangzhou, 510642, China; Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou, 510642, China
| | | | - Anita Sharma
- Department of Microbiology, G. B Pant University of Agriculture and Technology, Pantnagar, U. S Nagar, 263145, India
| | - Shaohua Chen
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, Guangdong Provincial Key Laboratory of Agricultural & Rural Pollution Abatement and Environmental Safety, Integrative Microbiology Research Centre, South China Agricultural University, Guangzhou, 510642, China; Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou, 510642, China.
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Abdelkader AA, Khalil MS, Mohamed MSM. Simultaneous biodegradation of λ-cyhalothrin pesticide and Vicia faba growth promotion under greenhouse conditions. AMB Express 2022; 12:44. [PMID: 35426615 PMCID: PMC9012055 DOI: 10.1186/s13568-022-01383-0] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2022] [Accepted: 04/02/2022] [Indexed: 11/10/2022] Open
Abstract
λ-cyhalothrin is a widely used synthetic pyrethroid insecticide and its persistence in plant, soil and water exerts a detrimental effect on humans as well as the environment. There are many studies regarding isolated bacteria capable of degrading λ-cyhalothrin in vitro. However, limited work has been done examining the microbial degradation of λ-cyhalothrin together with plant growth promotion under greenhouse conditions. In this study, 43 bacterial strains were isolated from heavily polluted soil with λ-cyhalothrin by the enrichment technique. The plant growth promotion characteristics of all isolates were evaluated. The results revealed that five isolates were potential in λ-cyhalothrin biodegradation at high concentration (1200 mg/L) within only 24 h together with their high plant growth promotion abilities. The morphological, biochemical and 16S rDNA sequence analyses identified the isolates as Bacillus subtilis strains. The GC/MS analysis revealed that the selected isolates reached high levels of degradation after only two days, the degradation percentage ranged from 95.72 to 99.52% after 48 h of incubation. Furthermore, the degradation pathway for complete detoxification and metabolism of λ-cyhalothrin was established. Moreover, greenhouse experiment was conducted, the results indicate that the application of seed coat significantly enhanced Vicia faba seedling growth and caused an increase from 38.4 to 40.2% percentage of fresh and dry weight, respectively compared to untreated control. All isolates were effective to remove the pesticide residues in Vicia faba seedlings and recorded the highest degradation percentage of 83.79 under greenhouse conditions. Therefore, it can be concluded that the Bacillus subtilis strains isolated in this study have a dual potential role in complete mineralization of λ-cyhalothrin residues in vivo as well as effective biofertilization for future use in sustainable agriculture.
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Wu M, Tang J, Zhou X, Lei D, Zeng C, Ye H, Cai T, Zhang Q. Isolation of Dibutyl Phthalate-Degrading Bacteria and Its Coculture with Citrobacter freundii CD-9 to Degrade Fenvalerate. J Microbiol Biotechnol 2022; 32:176-186. [PMID: 35058397 PMCID: PMC9628840 DOI: 10.4014/jmb.2110.10048] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2021] [Revised: 01/10/2022] [Accepted: 01/12/2022] [Indexed: 12/15/2022]
Abstract
Continued fenvalerate use has caused serious environmental pollution and requires large-scale remediation. Dibutyl phthalate (DBP) was discovered in fenvalerate metabolites degraded by Citrobacter freundii CD-9. Coculturing is an effective method for bioremediation, but few studies have analyzed the degradation pathways and potential mechanisms of cocultures. Here, a DBP-degrading strain (BDBP 071) was isolated from soil contaminated with pyrethroid pesticides (PPs) and identified as Stenotrophomonas acidaminiphila. The optimum conditions for DBP degradation were determined by response surface methodology (RSM) analysis to be 30.9 mg/l DBP concentration, pH 7.5, at a culture temperature of 37.2°C. Under the optimized conditions, approximately 88% of DBP was degraded within 48 h and five metabolites were detected. Coculturing C. freundii CD-9 and S. acidaminiphila BDBP 071 promoted fenvalerate degradation. When CD-9 was cultured for 16 h before adding BDBP 071, the strain inoculation ratio was 5:5 (v/v), fenvalerate concentration was 75.0 mg/l, fenvalerate was degraded to 84.37 ± 1.25%, and DBP level was reduced by 5.21 mg/l. In addition, 12 fenvalerate metabolites were identified and a pathway for fenvalerate degradation by the cocultured strains was proposed. These results provide theoretical data for further exploration of the mechanisms used by this coculture system to degrade fenvalerate and DBP, and also offer a promising method for effective bioremediation of PPs and their related metabolites in polluted environments.
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Affiliation(s)
- Min Wu
- Key Laboratory of Food Biotechnology, College of Food and Bioengineering, Xihua University, Chengdu 610039, Sichuan, P.R. China
| | - Jie Tang
- Key Laboratory of Food Biotechnology, College of Food and Bioengineering, Xihua University, Chengdu 610039, Sichuan, P.R. China,Corresponding authors J. Tang Phone: +86-28-87720552 Fax: +86-28-87720552 E-mail:
| | - Xuerui Zhou
- Key Laboratory of Food Biotechnology, College of Food and Bioengineering, Xihua University, Chengdu 610039, Sichuan, P.R. China
| | - Dan Lei
- Key Laboratory of Food Biotechnology, College of Food and Bioengineering, Xihua University, Chengdu 610039, Sichuan, P.R. China
| | - Chaoyi Zeng
- Key Laboratory of Food Biotechnology, College of Food and Bioengineering, Xihua University, Chengdu 610039, Sichuan, P.R. China
| | - Hong Ye
- Key Laboratory of Food Biotechnology, College of Food and Bioengineering, Xihua University, Chengdu 610039, Sichuan, P.R. China
| | - Ting Cai
- Key Laboratory of Food Biotechnology, College of Food and Bioengineering, Xihua University, Chengdu 610039, Sichuan, P.R. China
| | - Qing Zhang
- Key Laboratory of Food Biotechnology, College of Food and Bioengineering, Xihua University, Chengdu 610039, Sichuan, P.R. China,
Q. Zhang E-mail:
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Guo Y, Huang Y, Pang S, Zhou T, Lin Z, Yu H, Zhang G, Bhatt P, Chen S. Novel Mechanism and Kinetics of Tetramethrin Degradation Using an Indigenous Gordonia cholesterolivorans A16. Int J Mol Sci 2021; 22:ijms22179242. [PMID: 34502147 PMCID: PMC8431606 DOI: 10.3390/ijms22179242] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2021] [Revised: 08/23/2021] [Accepted: 08/23/2021] [Indexed: 12/22/2022] Open
Abstract
Tetramethrin is a pyrethroid insecticide that is commonly used worldwide. The toxicity of this insecticide into the living system is an important concern. In this study, a novel tetramethrin-degrading bacterial strain named A16 was isolated from the activated sludge and identified as Gordonia cholesterolivorans. Strain A16 exhibited superior tetramethrin degradation activity, and utilized tetramethrin as the sole carbon source for growth in a mineral salt medium (MSM). High-performance liquid chromatography (HPLC) analysis revealed that the A16 strain was able to completely degrade 25 mg·L−1 of tetramethrin after 9 days of incubation. Strain A16 effectively degraded tetramethrin at temperature 20–40 °C, pH 5–9, and initial tetramethrin 25–800 mg·L−1. The maximum specific degradation rate (qmax), half-saturation constant (Ks), and inhibition constant (Ki) were determined to be 0.4561 day−1, 7.3 mg·L−1, and 75.2 mg·L−1, respectively. The Box–Behnken design was used to optimize degradation conditions, and maximum degradation was observed at pH 8.5 and a temperature of 38 °C. Five intermediate metabolites were identified after analyzing the degradation products through gas chromatography–mass spectrometry (GC-MS), which suggested that tetramethrin could be degraded first by cleavage of its carboxylester bond, followed by degradation of the five-carbon ring and its subsequent metabolism. This is the first report of a metabolic pathway of tetramethrin in a microorganism. Furthermore, bioaugmentation of tetramethrin-contaminated soils (50 mg·kg−1) with strain A16 (1.0 × 107 cells g−1 of soil) significantly accelerated the degradation rate of tetramethrin, and 74.1% and 82.9% of tetramethrin was removed from sterile and non-sterile soils within 11 days, respectively. The strain A16 was also capable of efficiently degrading a broad spectrum of synthetic pyrethroids including D-cyphenothrin, chlorempenthrin, prallethrin, and allethrin, with a degradation efficiency of 68.3%, 60.7%, 91.6%, and 94.7%, respectively, after being cultured under the same conditions for 11 days. The results of the present study confirmed the bioremediation potential of strain A16 from a contaminated environment.
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Affiliation(s)
- Yuxin Guo
- Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, Integrative Microbiology Research Centre, South China Agricultural University, Guangzhou 510642, China; (Y.G.); (Y.H.); (S.P.); (T.Z.); (Z.L.); (H.Y.); (G.Z.)
- Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou 510642, China
| | - Yaohua Huang
- Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, Integrative Microbiology Research Centre, South China Agricultural University, Guangzhou 510642, China; (Y.G.); (Y.H.); (S.P.); (T.Z.); (Z.L.); (H.Y.); (G.Z.)
- Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou 510642, China
| | - Shimei Pang
- Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, Integrative Microbiology Research Centre, South China Agricultural University, Guangzhou 510642, China; (Y.G.); (Y.H.); (S.P.); (T.Z.); (Z.L.); (H.Y.); (G.Z.)
- Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou 510642, China
| | - Tianhao Zhou
- Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, Integrative Microbiology Research Centre, South China Agricultural University, Guangzhou 510642, China; (Y.G.); (Y.H.); (S.P.); (T.Z.); (Z.L.); (H.Y.); (G.Z.)
- Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou 510642, China
| | - Ziqiu Lin
- Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, Integrative Microbiology Research Centre, South China Agricultural University, Guangzhou 510642, China; (Y.G.); (Y.H.); (S.P.); (T.Z.); (Z.L.); (H.Y.); (G.Z.)
- Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou 510642, China
| | - Hongxiao Yu
- Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, Integrative Microbiology Research Centre, South China Agricultural University, Guangzhou 510642, China; (Y.G.); (Y.H.); (S.P.); (T.Z.); (Z.L.); (H.Y.); (G.Z.)
| | - Guorui Zhang
- Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, Integrative Microbiology Research Centre, South China Agricultural University, Guangzhou 510642, China; (Y.G.); (Y.H.); (S.P.); (T.Z.); (Z.L.); (H.Y.); (G.Z.)
| | - Pankaj Bhatt
- Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, Integrative Microbiology Research Centre, South China Agricultural University, Guangzhou 510642, China; (Y.G.); (Y.H.); (S.P.); (T.Z.); (Z.L.); (H.Y.); (G.Z.)
- Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou 510642, China
- Correspondence: (P.B.); (S.C.); Tel.: +86-20-8528-8229 (P.B. & S.C.); Fax: +86-20-8528-0292 (P.B. & S.C.)
| | - Shaohua Chen
- Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, Integrative Microbiology Research Centre, South China Agricultural University, Guangzhou 510642, China; (Y.G.); (Y.H.); (S.P.); (T.Z.); (Z.L.); (H.Y.); (G.Z.)
- Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou 510642, China
- Correspondence: (P.B.); (S.C.); Tel.: +86-20-8528-8229 (P.B. & S.C.); Fax: +86-20-8528-0292 (P.B. & S.C.)
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