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Rakowiecki M, Studzińska S, Ścianowski J, Bosiak MJ, Wolan A, Budny M. Synthetic approach to iodosulfuron-methyl and metsulfuron-methyl metabolites and their application for water analysis. RSC Adv 2024; 14:15848-15855. [PMID: 38756849 PMCID: PMC11095237 DOI: 10.1039/d4ra01725k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2024] [Accepted: 05/09/2024] [Indexed: 05/18/2024] Open
Abstract
A synthetic approach to ten metabolites of iodosulfuron-methyl sodium and metsulfuron-methyl was performed and reported in this study. The compounds of interest were prepared by controlled hydrolytic degradation of active substances or by de novo synthesis from commercially available triazine precursor 10. Obtained compounds were characterized by IR, NMR, and elemental analysis techniques. Metabolites and active substances were utilized during the development of a separation and quantification method using reversed-phase high-performance liquid chromatography coupled with tandem mass spectrometry. The validated method was applied for the analysis of all studied compounds in the extracts from water samples collected from the Vistula river (Toruń, Poland).
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Affiliation(s)
| | - Sylwia Studzińska
- Department of Environmental Chemistry and Bioanalytics, Faculty of Chemistry, Nicolaus Copernicus University Gagarina 7 87-100 Toruń Poland
| | - Jacek Ścianowski
- Department of Organic Chemistry, Faculty of Chemistry, Nicolaus Copernicus University Gagarina 7 87-100 Toruń Poland
| | - Mariusz J Bosiak
- Department of Organic Chemistry, Faculty of Chemistry, Nicolaus Copernicus University Gagarina 7 87-100 Toruń Poland
- Noctiluca S.A. Gagarina 7/41B 87-100 Toruń Poland
| | - Andrzej Wolan
- Synthex Technologies Sp. z o.o. Gagarina 7/134B 87-100 Toruń Poland
- Department of Organic Chemistry, Faculty of Chemistry, Nicolaus Copernicus University Gagarina 7 87-100 Toruń Poland
| | - Marcin Budny
- Synthex Technologies Sp. z o.o. Gagarina 7/134B 87-100 Toruń Poland
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2
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Anwar S, Wahla AQ, Ali T, Khaliq S, Imran A, Tawab A, Afzal M, Iqbal S. Biodegradation and Subsequent Toxicity Reduction of Co-contaminants Tribenuron Methyl and Metsulfuron Methyl by a Bacterial Consortium B2R. ACS OMEGA 2022; 7:19816-19827. [PMID: 35721981 PMCID: PMC9202245 DOI: 10.1021/acsomega.2c01583] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/16/2022] [Accepted: 05/11/2022] [Indexed: 06/15/2023]
Abstract
AllyMax is a widely used herbicide formulation in wheat-rice cropping areas of the world. The residues of its active ingredients, tribenuron methyl (TBM) and metsulfuron methyl (MET), persist in soil and water as co-contaminants, and cause serious threats to nontarget organisms. This study was performed to assess the potential of a bacterial consortium for the degradation and detoxification of TBM and MET individually and as co-contaminants. A bacterial consortium (B2R), comprising Bacillus cereus SU-1, Bacillus velezensis OS-2, and Rhodococcus rhodochrous AQ1, capable of degrading TBM and MET in liquid cultures was developed. Biodegradation of TBM and MET was optimized using the Taguchi design of experiment. Optimum degradation of both TBM and MET was obtained at pH 7 and 37 °C. Regarding media composition, optimum degradation of TBM and MET was obtained in minimal salt medium (MSM) supplemented with glucose, and MSM without glucose, respectively. The consortium simultaneously degraded TBM and MET (94.8 and 80.4%, respectively) in cultures containing the formulation AllyMax, where TBM and MET existed as co-contaminants at 2.5 mg/L each. Mass spectrometry analysis confirmed that during biodegradation, TBM and MET were metabolized into simpler compounds. Onion (Allium cepa) root inhibition and Comet assays revealed that the bacterial consortium B2R detoxified TBM and MET separately and as co-contaminants. The consortium B2R can potentially be used for the remediation of soil and water co-contaminated with TBM and MET.
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Affiliation(s)
- Samina Anwar
- Soil
& Environmental Biotechnology Division, National Institute for Biotechnology and Genetic Engineering College,
Pakistan Institute of Engineering and Applied Sciences (NIBGE-C, PIEAS), Faisalabad 38000, Pakistan
| | - Abdul Qadeer Wahla
- Soil
& Environmental Biotechnology Division, National Institute for Biotechnology and Genetic Engineering College,
Pakistan Institute of Engineering and Applied Sciences (NIBGE-C, PIEAS), Faisalabad 38000, Pakistan
| | - Tayyaba Ali
- Department
of Zoology, Government College University, Allama Iqbal Road, Faisalabad 38000, Pakistan
| | - Shazia Khaliq
- Industrial
Biotechnology Division, National Institute
for Biotechnology and Genetic Engineering College, Pakistan Institute
of Engineering and Applied Sciences (NIBGE-C, PIEAS), Faisalabad 38000, Pakistan
| | - Asma Imran
- Soil
& Environmental Biotechnology Division, National Institute for Biotechnology and Genetic Engineering College,
Pakistan Institute of Engineering and Applied Sciences (NIBGE-C, PIEAS), Faisalabad 38000, Pakistan
| | - Abdul Tawab
- Health
Biotechnology Division, National Institute
for Biotechnology and Genetic Engineering College, Pakistan Institute
of Engineering and Applied Sciences (NIBGE-C, PIEAS), Faisalabad 38000, Pakistan
| | - Muhammad Afzal
- Soil
& Environmental Biotechnology Division, National Institute for Biotechnology and Genetic Engineering College,
Pakistan Institute of Engineering and Applied Sciences (NIBGE-C, PIEAS), Faisalabad 38000, Pakistan
| | - Samina Iqbal
- Soil
& Environmental Biotechnology Division, National Institute for Biotechnology and Genetic Engineering College,
Pakistan Institute of Engineering and Applied Sciences (NIBGE-C, PIEAS), Faisalabad 38000, Pakistan
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3
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Yang TT, Zhang HW, Wang J, Li XY, Li X, Su ZC. High bioremediation potential of strain Chenggangzhangella methanolivorans CHL1 for soil polluted with metsulfuron-methyl or tribenuron-methyl in a pot experiment. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2021; 28:4731-4738. [PMID: 32951166 DOI: 10.1007/s11356-020-10825-w] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/17/2020] [Accepted: 09/13/2020] [Indexed: 06/11/2023]
Abstract
Soil contamination caused by long-term application of metsulfuron-methyl and tribenuron-methyl has become an issue of increasing concern. In our previous study, strain Chenggangzhangella methanolivorans CHL1, capable of efficiently degrading sulfonylurea herbicides, was isolated. Here, the bioremediation potential of strain CHL1 was assessed for soil polluted with metsulfuron-methyl or tribenuron-methyl in a pot experiment. The growth parameters of waxy maize were measured on day 21 of the pot experiment. Additionally, the residues of metsulfuron-methyl and tribenuron-methyl in soils were analyzed, and the soil microbial community was investigated using a phospholipid fatty acids (PLFAs) method on days 1, 7, 14, and 21. The results indicated that strain CHL1 greatly accelerated the degradation of metsulfuron-methyl and tribenuron-methyl in soils. The degradation rates in the treatments inoculated with strain CHL1were all more than 91% after 7 days, significantly higher than the 25-36% degradation measured in non-inoculated treatments. Furthermore, strain CHL1 reduced the negative effects of tribenuron-methyl and metsulfuron-methyl on waxy maize growth, especially the primary root length. Moreover, inoculation with strain CHL1 also reduced the effects of tribenuron-methyl and metsulfuron-methyl on soil microbial biomass, diversity, and community structure. The present study demonstrates that strain CHL1 has great potential application to remediate soil contaminated with metsulfuron-methyl or tribenuron-methyl.
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Affiliation(s)
- Ting-Ting Yang
- Key Laboratory of Pollution Ecology and Environmental Engineering, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang, China
| | - Hui-Wen Zhang
- Key Laboratory of Pollution Ecology and Environmental Engineering, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang, China
| | - Jian Wang
- Key Laboratory of Pollution Ecology and Environmental Engineering, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang, China
- Shenyang Research Institute of Chemical Industry Co. Ltd., Shenyang, 110021, China
| | - Xin-Yu Li
- Key Laboratory of Pollution Ecology and Environmental Engineering, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang, China.
| | - Xu Li
- Key Laboratory of Pollution Ecology and Environmental Engineering, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang, China
| | - Zhen-Cheng Su
- Key Laboratory of Pollution Ecology and Environmental Engineering, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang, China
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4
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Yu Z, Zhang H, Fu X, Li X, Guo Q, Yang T, Li X. Immobilization of esterase SulE in cross-linked gelatin/chitosan and its application in remediating soils polluted with tribenuron-methyl and metsulfuron-methyl. Process Biochem 2020. [DOI: 10.1016/j.procbio.2020.08.014] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
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Noshadi M, Foroutani A, Sepaskhah A. Evaluation of HYDRUS-1D and modified PRZM-3 models for tribenuron methyl herbicide transport in soil profile under vetiver cultivation. INTERNATIONAL JOURNAL OF PHYTOREMEDIATION 2019; 21:878-891. [PMID: 30931580 DOI: 10.1080/15226514.2019.1583632] [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: 06/09/2023]
Abstract
Tribenuron methyl (TBM) is widely used in weed control. Due to its phytotoxicity, concerns on TBM pollution to soil have been raised. In this research, TBM concentration in the soil profile and vetiver grass were measured and simulated using HYDRUS-1D and modified PRZM-3 models. The treatments were two herbicide concentrations to soil with vetiver (C1V and C2V) and without vetiver (C1S and C2S). In control treatment (Co) no herbicide was applied to the soil. In general, according to the measured data, TBM soil residues in C1V and C2V treatments were 39.8% and 30.1% lower than that obtained in C1S and C2S treatments, respectively. The TBM was leached to 90 cm soil depth and it was limited to about 50 cm in the treatments with vetiver grass. The simulated herbicide residue in the soil profile in modified PRZM-3 model was more accurate than the HYDRUS-1D model. The dissipation processes of herbicides in soil and solving method of water movement in soil, considered in the modified PRZM-3 model, are more precise than that obtained in the HYDRUS-1D model. However, the prediction of TBM uptake by vetiver in the HYDRUS-1D model was closer to the measured values than that obtained in the modified PRZM-3 model.
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Affiliation(s)
- Masoud Noshadi
- a Water Engineering Department , Shiraz University , Shiraz , Iran ( the Islamic Republic of )
| | - Azadeh Foroutani
- a Water Engineering Department , Shiraz University , Shiraz , Iran ( the Islamic Republic of )
| | - Alireza Sepaskhah
- a Water Engineering Department , Shiraz University , Shiraz , Iran ( the Islamic Republic of )
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Rogacz D, Lewkowski J, Malinowski Z, Matusiak A, Morawska M, Rychter P. Effect of New Thiophene-Derived Aminophosphonic Derivatives on Growth of Terrestrial Plants. Part 2. Their Ecotoxicological Impact and Phytotoxicity Test Toward Herbicidal Application in Agriculture. MOLECULES (BASEL, SWITZERLAND) 2018; 23:molecules23123173. [PMID: 30513789 PMCID: PMC6321426 DOI: 10.3390/molecules23123173] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/15/2018] [Revised: 11/25/2018] [Accepted: 11/29/2018] [Indexed: 11/20/2022]
Abstract
Background: The aim of this work was to evaluate phytotoxicity of the thiophene derivatives against three persistent weeds of a high degree of resistance (Galinsoga parviflora Cav., Rumex acetosa L., and Chenopodium album) as well as their ecotoxicological impact on Heterocypris incongruens. In addition, Aliivibrio fischeri was measured. Two of eight described aminophosphonates, namely dimethyl N-(2-methoxyphenyl)amino(2-thienyl)methylphosphonate (2d) and dimethyl N-(tert-butyl)- (2-thienyl)methylphosphonate (2h), have never been reported before. Methods: The phytotoxicity of tested aminophosphonates toward their potential application as soil-applied herbicides was evaluated according to the OECD 208 Guideline. Ecotoxicological properties of investigated compounds were made using the OSTRACODTOXKITTM and Microtox® tests. Results: Obtained results showed that four aminophosphonates have interesting herbicidal properties and N-(2-methylphenyl)amino- (2-thienyl)methylphosphonate (2a) was found to kill efficiently the most resistant plant Chenopodium album. None of the tested compounds showed important toxicity against Aliivibrio fischeri. However, their toxic impact on Heterocypris incongruens was significantly elevated. Conclusions: The aminophosphonate 2a showed herbicidal potential and it is not toxic against tested bacteria (EC50 over 1000 mg/L). It was found to be moderately toxic against ostracods [mortality 48% at 10 mg/kg of soil dry weight (s.d.w.)] and this problem should be solved by the use of the controlled release from a polymeric carrier.
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Affiliation(s)
- Diana Rogacz
- Faculty of Mathematics and Natural Science, Jan Długosz University in Częstochowa, 42-200 Częstochowa, 13/15 Armii Krajowej Av., Poland.
| | - Jarosław Lewkowski
- Department of Organic Chemistry, Faculty of Chemistry, University of Łódź, Tamka 12, 91-403 Łódź, Poland.
| | - Zbigniew Malinowski
- Department of Organic Chemistry, Faculty of Chemistry, University of Łódź, Tamka 12, 91-403 Łódź, Poland.
| | - Agnieszka Matusiak
- Department of Organic Chemistry, Faculty of Chemistry, University of Łódź, Tamka 12, 91-403 Łódź, Poland.
| | - Marta Morawska
- Department of Organic Chemistry, Faculty of Chemistry, University of Łódź, Tamka 12, 91-403 Łódź, Poland.
| | - Piotr Rychter
- Faculty of Mathematics and Natural Science, Jan Długosz University in Częstochowa, 42-200 Częstochowa, 13/15 Armii Krajowej Av., Poland.
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Rachedi K, Zermane F, Tir R, Ayache F, Duran R, Lauga B, Karama S, Simon M, Boulahrouf A. Effect of sulfonylurea tribenuron methyl herbicide on soil Actinobacteria growth and characterization of resistant strains. Braz J Microbiol 2018; 49:79-86. [PMID: 28844884 PMCID: PMC5790578 DOI: 10.1016/j.bjm.2017.05.004] [Citation(s) in RCA: 16] [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: 10/28/2016] [Revised: 04/15/2017] [Accepted: 05/06/2017] [Indexed: 11/17/2022] Open
Abstract
Repeated application of pesticides disturbs microbial communities and cause dysfunctions on soil biological processes. Granstar® 75 DF is one of the most used sulfonylurea herbicides on cereal crops; it contains 75% of tribenuron-methyl. Assessing the changes on soil microbiota, particularly on the most abundant bacterial groups, will be a useful approach to determine the impact of Granstar® herbicide. For this purpose, we analyzed Actinobacteria, which are known for their diversity, abundance, and aptitude to resist to xenobiotic substances. Using a selective medium for Actinobacteria, 42 strains were isolated from both untreated and Granstar® treated soils. The number of isolates recovered from the treated agricultural soil was fewer than that isolated from the corresponding untreated soil, suggesting a negative effect of Granstar® herbicide on Actinobacteria community. Even so, the number of strains isolated from untreated and treated forest soil was quite similar. Among the isolates, resistant strains, tolerating high doses of Granstar® ranging from 0.3 to 0.6% (v/v), were obtained. The two most resistant strains (SRK12 and SRK17) were isolated from treated soils showing the importance of prior exposure to herbicides for bacterial adaptation. SRK12 and SRK17 strains showed different morphological features. The phylogenetic analysis, based on 16S rRNA gene sequencing, clustered the SRK12 strain with four Streptomyces type strains (S. vinaceusdrappus, S. mutabilis, S. ghanaensis and S. enissocaesilis), while SRK17 strain was closely related to Streptomyces africanus. Both strains were unable to grow on tribenuron methyl as unique source of carbon, despite its advanced dissipation. On the other hand, when glucose was added to tribenuron methyl, the bacterial development was evident with even an improvement of the tribenuron methyl degradation. In all cases, as tribenuron methyl disappeared, two compounds were detected with increased concentrations. These by-products appeared to be persistent and were not degraded either chemically or by the studied strains. Based on these observations, we suggested that bacterial activity on carbon substrates could be directly involved in the partial breakdown of tribenuron methyl, by generating the required acidity for the first step of the hydrolysis. Such a process would be interesting to consider in bioremediation of neutral and alkaline tribenuron methyl-polluted soils.
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Affiliation(s)
- Kounouz Rachedi
- Université Frères Mentouri, Faculté des Sciences de la Nature et de la Vie, Laboratoire de Génie Microbiologique et Applications, Constantine, Algeria; Université Frères Mentouri, Institut de la Nutrition, de l'Alimentation et des Technologies Agro-Alimentaires (INATAA), Constantine, Algeria.
| | - Ferial Zermane
- Université Frères Mentouri, Faculté des Sciences de la Nature et de la Vie, Laboratoire de Génie Microbiologique et Applications, Constantine, Algeria; Université Frères Mentouri, Faculté des Sciences de la Nature et de la Vie, Département de Microbiologie, Constantine, Algeria
| | - Radja Tir
- Université Frères Mentouri, Faculté des Sciences de la Nature et de la Vie, Laboratoire de Biologie Moléculaire et Cellulaire, Constantine, Algeria
| | | | - Robert Duran
- Université de Pau et des Pays de l'Adour, Unité Mixte de Recherche 5254, Equipe Environnement et Microbiologie, Pau, France
| | - Béatrice Lauga
- Université de Pau et des Pays de l'Adour, Unité Mixte de Recherche 5254, Equipe Environnement et Microbiologie, Pau, France
| | - Solange Karama
- Université de Pau et des Pays de l'Adour, Unité Mixte de Recherche 5254, Equipe Environnement et Microbiologie, Pau, France
| | - Maryse Simon
- Université de Pau et des Pays de l'Adour, Unité Mixte de Recherche 5254, Equipe Environnement et Microbiologie, Pau, France
| | - Abderrahmane Boulahrouf
- Université Frères Mentouri, Faculté des Sciences de la Nature et de la Vie, Laboratoire de Génie Microbiologique et Applications, Constantine, Algeria; Université Frères Mentouri, Faculté des Sciences de la Nature et de la Vie, Département de Microbiologie, Constantine, Algeria
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Pei M, Zhu X, Huang X. Mixed functional monomers-based monolithic adsorbent for the effective extraction of sulfonylurea herbicides in water and soil samples. J Chromatogr A 2018; 1531:13-21. [DOI: 10.1016/j.chroma.2017.11.030] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2017] [Revised: 10/24/2017] [Accepted: 11/14/2017] [Indexed: 12/13/2022]
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9
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Feng W, Wei Z, Song J, Qin Q, Yu K, Li G, Zhang J, Wu W, Yan Y. Hydrolysis of nicosulfuron under acidic environment caused by oxalate secretion of a novel Penicillium oxalicum strain YC-WM1. Sci Rep 2017; 7:647. [PMID: 28381881 PMCID: PMC5428040 DOI: 10.1038/s41598-017-00228-2] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2016] [Accepted: 02/15/2017] [Indexed: 11/09/2022] Open
Abstract
A novel Penicillium oxalicum strain YC-WM1, isolated from activated sludge, was found to be capable of completely degrading 100 mg/L of nicosulfuron within six days when incubated in GSM at 33 °C. Nicosulfuron degradation rates were affected by GSM initial pH, nicosulfuron initial concentration, glucose initial concentration, and carbon source. After inoculation, the medium pH was decreased from 7.0 to 4.5 within one day and remained at around 3.5 during the next few days, in which nicosulfuron degraded quickly. Besides, 100 mg/L of nicosulfuron were completely degraded in GSM medium at pH of 3.5 without incubation after 4 days. So, nicosulfuron degradation by YC-WM1 may be acidolysis. Based on HPLC analysis, GSM medium acidification was due to oxalate accumulation instead of lactic acid and oxalate, which was influenced by different carbon sources and had no relationship to nicosulfuron initial concentration. Furthermore, nicosulfuron broke into aminopyrimidine and pyridylsulfonamide as final products and could not be used as nitrogen source and mycelium didn’t increase in GSM medium. Metabolomics results further showed that nicosulfuron degradation was not detected in intracellular. Therefore, oxalate secretion in GSM medium by strain YC-WM1 led to nicosulfuron acidolysis.
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Affiliation(s)
- Weimin Feng
- Graduate School, Chinese Academy of Agricultural Sciences, Beijing, 100081, China
| | - Zheng Wei
- Graduate School, Chinese Academy of Agricultural Sciences, Beijing, 100081, China.,Insitute of Crop Science/Natonal Key Facility for Crop Gene Resources and Genetic Improvement, Chinese Academy of Agriculture Sciences, Beijing, 100081, China
| | - Jinlong Song
- Graduate School, Chinese Academy of Agricultural Sciences, Beijing, 100081, China.,Chinese Academy of fishery sciences, Beijing, 100141, China
| | - Qiao Qin
- Insitute of Crop Science/Natonal Key Facility for Crop Gene Resources and Genetic Improvement, Chinese Academy of Agriculture Sciences, Beijing, 100081, China
| | - Kaimin Yu
- Graduate School, Chinese Academy of Agricultural Sciences, Beijing, 100081, China
| | - Guochao Li
- Graduate School, Chinese Academy of Agricultural Sciences, Beijing, 100081, China
| | - Jiayu Zhang
- Graduate School, Chinese Academy of Agricultural Sciences, Beijing, 100081, China
| | - Wei Wu
- Graduate School, Chinese Academy of Agricultural Sciences, Beijing, 100081, China
| | - Yanchun Yan
- Graduate School, Chinese Academy of Agricultural Sciences, Beijing, 100081, China.
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10
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Carles L, Joly M, Bonnemoy F, Leremboure M, Batisson I, Besse-Hoggan P. Identification of sulfonylurea biodegradation pathways enabled by a novel nicosulfuron-transforming strain Pseudomonas fluorescens SG-1: Toxicity assessment and effect of formulation. JOURNAL OF HAZARDOUS MATERIALS 2017; 324:184-193. [PMID: 28340990 DOI: 10.1016/j.jhazmat.2016.10.048] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/10/2016] [Revised: 10/19/2016] [Accepted: 10/21/2016] [Indexed: 06/06/2023]
Abstract
Nicosulfuron is a selective herbicide belonging to the sulfonylurea family, commonly used on maize culture. A bacterial strain SG-1 was isolated from an agricultural soil previously treated with nicosulfuron. This strain was identified as Pseudomonas fluorescens and is able to quantitatively dissipate 77.5% of nicosulfuron (1mM) at 28°C in the presence of glucose within the first day of incubation. Four metabolites were identified among which ASDM (2-(aminosulfonyl)-N,N-dimethyl-3-pyridinecarboxamide) and ADMP (2-amino-4,6-dimethoxypyrimidine) in substantial proportions, corresponding to the hydrolytic sulfonylurea cleavage. Two-phase dissipation kinetics of nicosulfuron by SG-1 were observed at the highest concentrations tested (0.5 and 1mM) due to biosorption. The extend and rate of formulated nicosulfuron transformation were considerably reduced compared to those with the pure active ingredient (appearance of a lag phase, 30% dissipation after 10days of incubation instead of 100% with the pure herbicide) but the same metabolites were observed. The toxicity of metabolites (standardized Microtox® test) showed a 20-fold higher toxicity of ADMP than nicosulfuron. P. fluorescens strain SG-1 was also able to biotransform two other sulfonylureas (metsulfuron-methyl and tribenuron-methyl) with various novel pathways. These results provide new tools for a comprehensive picture of the sulfonylurea environmental fate and toxicity of nicosulfuron in the environment.
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Affiliation(s)
- Louis Carles
- Clermont Université, Université Blaise Pascal, F-63000 Clermont-Ferrand, France; CNRS, UMR 6023, Laboratoire Microorganismes: Génome et Environnement, TSA 60026, CS 60026, 63178 Aubière Cedex, France; CNRS, UMR 6296, Institut de Chimie de Clermont-Ferrand, TSA 60026, CS 60026, 63178 Aubière Cedex, France
| | - Muriel Joly
- Clermont Université, Université Blaise Pascal, F-63000 Clermont-Ferrand, France; CNRS, UMR 6023, Laboratoire Microorganismes: Génome et Environnement, TSA 60026, CS 60026, 63178 Aubière Cedex, France
| | - Frédérique Bonnemoy
- Clermont Université, Université Blaise Pascal, F-63000 Clermont-Ferrand, France; CNRS, UMR 6023, Laboratoire Microorganismes: Génome et Environnement, TSA 60026, CS 60026, 63178 Aubière Cedex, France
| | - Martin Leremboure
- Clermont Université, Université Blaise Pascal, F-63000 Clermont-Ferrand, France; CNRS, UMR 6296, Institut de Chimie de Clermont-Ferrand, TSA 60026, CS 60026, 63178 Aubière Cedex, France
| | - Isabelle Batisson
- Clermont Université, Université Blaise Pascal, F-63000 Clermont-Ferrand, France; CNRS, UMR 6023, Laboratoire Microorganismes: Génome et Environnement, TSA 60026, CS 60026, 63178 Aubière Cedex, France.
| | - Pascale Besse-Hoggan
- Clermont Université, Université Blaise Pascal, F-63000 Clermont-Ferrand, France; CNRS, UMR 6296, Institut de Chimie de Clermont-Ferrand, TSA 60026, CS 60026, 63178 Aubière Cedex, France.
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11
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The Effect of New Thiophene-Derived Aminophosphonic Derivatives on Growth of Terrestrial Plants: A Seedling Emergence and Growth Test. Molecules 2016; 21:molecules21060694. [PMID: 27248990 PMCID: PMC6272962 DOI: 10.3390/molecules21060694] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2016] [Revised: 05/22/2016] [Accepted: 05/23/2016] [Indexed: 11/26/2022] Open
Abstract
The aim of this work was to synthesize selected thiophene-derived aminophosphonic systems and evaluate the phytotoxicity of newly obtained products according to the OECD 208 Guideline. Seven new thiophene-derived N-substituted dimethyl aminomethylphosphonic acid esters 2a–h were synthesized by the addition of an appropriate phosphite to azomethine bond of starting Schiff bases 1a–h, and NMR spectroscopic properties of aminophosphonates were investigated. These eight compounds were analyzed in regard to their phytotoxicity towards two plants, radish (Raphanus sativus) and oat (Avena sativa). On the basis of the obtained results, it was found that tested aminophosphonates 2a–h showed an ecotoxicological impact against selected plants, albeit to various degrees.
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12
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B. S. I, O. K. E, M. A. T. Degradation of Triazine-2-(14)C Metsulfuron-Methyl in Soil from an Oil Palm Plantation. PLoS One 2015; 10:e0138170. [PMID: 26437264 PMCID: PMC4593563 DOI: 10.1371/journal.pone.0138170] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2015] [Accepted: 08/27/2015] [Indexed: 11/18/2022] Open
Abstract
Triazine-2-14C metsulfuron–methyl is a selective, systemic sulfonylurea herbicide. Degradation studies in soils are essential for the evaluation of the persistence of pesticides and their breakdown products. The purpose of the present study was to investigate the degradation of triazine-2-14C metsulfuron–methyl in soil under laboratory conditions. A High Performance Liquid Chromatograph (HPLC) equipped with an UV detector and an on-line radio-chemical detector, plus a Supelco Discovery column (250 x 4.6 mm, 5 μm), and PRP–1 column (305 x 7.0 mm, 10 μm) was used for the HPLC analysis. The radioactivity was determined by a Liquid Scintillation Counter (LSC) in scintillation fluid. The soil used was both sterilized and non-sterilized in order to observe the involvement of soil microbes. The estimated DT50 and DT90 values of metsulfuron-methyl in a non-sterile system were observed to be 13 and 44 days, whereas in sterilized soil, the DT50 and DT90 were 31 and 70 days, respectively. The principal degradation product after 60 days was CO2. The higher cumulative amount of 14CO2 in 14C- triazine in the non-sterilized soil compared to that in the sterile system suggests that biological degradation by soil micro-organisms significantly contributes to the dissipation of the compound. The major routes of degradation were O-demethylation, sulfonylurea bridge cleavage and the triazine “ring-opened.”
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Affiliation(s)
- Ismail B. S.
- School of Environmental and Natural Resource Sciences, Faculty of Science and Technology, Universiti Kebangsaan Malaysia, 43600 UKM, Bangi, Selangor, Malaysia
- * E-mail:
| | - Eng O. K.
- School of Environmental and Natural Resource Sciences, Faculty of Science and Technology, Universiti Kebangsaan Malaysia, 43600 UKM, Bangi, Selangor, Malaysia
| | - Tayeb M. A.
- School of Environmental and Natural Resource Sciences, Faculty of Science and Technology, Universiti Kebangsaan Malaysia, 43600 UKM, Bangi, Selangor, Malaysia
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Zhao W, Xu L, Li D, Li X, Wang C, Zheng M, Pan C, Qiu L. Biodegradation of thifensulfuron-methyl by Ochrobactrum sp. in liquid medium and soil. Biotechnol Lett 2015; 37:1385-92. [DOI: 10.1007/s10529-015-1807-3] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2014] [Accepted: 02/24/2015] [Indexed: 11/30/2022]
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14
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Yang L, Li X, Li X, Su Z, Zhang C, Zhang H. Microbial community dynamics during the bioremediation process of chlorimuron-ethyl-contaminated soil by Hansschlegelia sp. strain CHL1. PLoS One 2015; 10:e0117943. [PMID: 25689050 PMCID: PMC4331280 DOI: 10.1371/journal.pone.0117943] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2014] [Accepted: 01/05/2015] [Indexed: 11/18/2022] Open
Abstract
Long-term and excessive application of chlorimuron-ethyl has led to a series of environmental problems. Strain Hansschlegelia sp. CHL1, a highly efficient chlorimuron-ethyl degrading bacterium isolated in our previous study, was employed in the current soil bioremediation study. The residues of chlorimuron-ethyl in soils were detected, and the changes of soil microbial communities were investigated by phospholipid fatty acid (PLFA) analysis. The results showed that strain CHL1 exhibited significant chlorimuron-ethyl degradation ability at wide range of concentrations between 10μg kg-1 and 1000μg kg-1. High concentrations of chlorimuron-ethyl significantly decreased the total concentration of PLFAs and the Shannon-Wiener indices and increased the stress level of microbes in soils. The inoculation with strain CHL1, however, reduced the inhibition on soil microbes caused by chlorimuron-ethyl. The results demonstrated that strain CHL1 is effective in the remediation of chlorimuron-ethyl-contaminated soil, and has the potential to remediate chlorimuron-ethyl contaminated soils in situ.
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Affiliation(s)
- Liqiang Yang
- State Key Laboratory of Forest and Soil Ecology, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang, China
- University of Chinese Academy of Sciences, Beijing, China
| | - Xinyu Li
- State Key Laboratory of Forest and Soil Ecology, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang, China
| | - Xu Li
- State Key Laboratory of Forest and Soil Ecology, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang, China
| | - Zhencheng Su
- State Key Laboratory of Forest and Soil Ecology, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang, China
| | - Chenggang Zhang
- State Key Laboratory of Forest and Soil Ecology, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang, China
| | - Huiwen Zhang
- State Key Laboratory of Forest and Soil Ecology, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang, China
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15
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De Gerónimo E, Aparicio VC, Bárbaro S, Portocarrero R, Jaime S, Costa JL. Presence of pesticides in surface water from four sub-basins in Argentina. CHEMOSPHERE 2014; 107:423-431. [PMID: 24548646 DOI: 10.1016/j.chemosphere.2014.01.039] [Citation(s) in RCA: 141] [Impact Index Per Article: 14.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/16/2013] [Revised: 11/30/2013] [Accepted: 01/07/2014] [Indexed: 06/03/2023]
Abstract
Argentina has 31 million hectares given over to agriculture comprising 2.2% of the world's total area under cultivation (Stock Exchange of Rosario, Argentina). Despite the intensity of this agricultural activity, data on pesticide pollution in surface water are rather scarce. In this sense, the aim of this work is to determine the presence of pesticides in surface water of four agricultural sub-basins of Argentine. An environmental monitoring was carried out to determine the impact of twenty-nine pesticides used in agricultural activities on the surface water quality of agricultural areas within the San Vicente, Azul, Buenos Aires southeast and Mista stream sub-basins. The samples were analyzed by solid-phase extraction (SPE) using OASIS HLB 60 mg cartridges and ultra-high-pressure liquid chromatography coupled to tandem mass spectrometry (UHPLC/MSMS) that provided good analytical quality parameters. The southeast of Buenos Aires was the site with the highest frequency of pesticides detection, followed by Azul and San Vicente microbasins. The most detected pesticides, considering all surface water samples, were atrazine, tebuconazole and diethyltoluamide with maximum concentration levels of 1.4, 0.035, and 0.701 μg L(-1), respectively. The results obtained for all basins studied show the presence of residual pesticides in surface waters according the different agricultural activities developed.
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Affiliation(s)
- Eduardo De Gerónimo
- Instituto Nacional de Tecnología Agropecuaria (INTA), Estación Experimental Agropecuaria Balcarce, Route 226 Km 73,5, 7620 Balcarce, Buenos Aires, Argentina.
| | - Virginia C Aparicio
- Instituto Nacional de Tecnología Agropecuaria (INTA), Estación Experimental Agropecuaria Balcarce, Route 226 Km 73,5, 7620 Balcarce, Buenos Aires, Argentina
| | - Sebastián Bárbaro
- Instituto Nacional de Tecnología Agropecuaria (INTA), Estación Experimental Agropecuaria Cerro Azul, Misiones, Argentina
| | - Rocío Portocarrero
- Instituto Nacional de Tecnología Agropecuaria (INTA), Estación Experimental Agropecuaria Famaillá, Tucumán, Argentina
| | - Sebastián Jaime
- Instituto Nacional de Tecnología Agropecuaria (INTA), Agencia de Extensión Azul, Buenos Aires, Argentina
| | - José L Costa
- Instituto Nacional de Tecnología Agropecuaria (INTA), Estación Experimental Agropecuaria Balcarce, Route 226 Km 73,5, 7620 Balcarce, Buenos Aires, Argentina
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Benzi M, Robotti E, Gianotti V. Study on the photodegradation of amidosulfuron in aqueous solutions by LC-MS/MS. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2013; 20:9034-9043. [PMID: 23771442 DOI: 10.1007/s11356-013-1900-x] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/30/2013] [Accepted: 06/03/2013] [Indexed: 06/02/2023]
Abstract
Sulfonylurea herbicides are extensively widespread for the protection of a variety of crops and vegetables because of their low application rates, high selectivity and low persistency in the environment; unfortunately, their low persistence does not always correspond to a lower toxicity, since new species potentially more toxic and stable than the precursor herbicides can form, owing to natural degradation processes. Here, the photodegradation of amidosulfuron in aqueous solutions was studied by high-performance liquid chromatography with diode array detection and tandem mass spectrometry to identify the degradation products in order to outline the environmental fate of the molecules generating from the simulation of one of the natural processes that can occur, i.e., photoinduced degradation. The photodegradation process results in a first order kinetic reaction with a t 1/2 value of 276 h (11.5 days) and a kinetic constant of 0.0027 h(-1), and three possible degradation products were identified. The results obtained are then compared to those obtained in previous works carried out in comparable experimental conditions about nicosulfuron and tribenuron-methyl, two sulfonylurea herbicides belonging to different classes, and to literature data: hypotheses on the existence of preferential degradation pathways are then drawn, in consequence of the molecular structure of the sulfonylurea pesticide. In particular, the use of organic solvents to obtain complete solubilization of the sample plays a fundamental role and deeply influences the degradation processes that, therefore, not always fully adhere to the actual natural photodegradation pathways. Moreover, considerations about toxicity were driven since the complete mineralisation of the sample is not reached: even when the parent pesticides are totally degraded, they are, however, transformed into other organic compounds showing, if subject to ecotoxicological tests, at least the same toxicity of the precursor herbicides. The evidence here presented suggests that, at least for the class of sulfonylurea pesticides, their professed low persistence actually does not produce any real advantage.
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Affiliation(s)
- M Benzi
- ARPA Valle d'Aosta, Località Grande Charrière 44, 11020, Saint-Christophe, AO, Italy
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Sondhia S, Waseem U, Varma RK. Fungal degradation of an acetolactate synthase (ALS) inhibitor pyrazosulfuron-ethyl in soil. CHEMOSPHERE 2013; 93:2140-2147. [PMID: 23993642 DOI: 10.1016/j.chemosphere.2013.07.066] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/26/2013] [Revised: 07/25/2013] [Accepted: 07/29/2013] [Indexed: 06/02/2023]
Abstract
Owing to reported phytotoxicity of some sulfonylurea class of herbicides in number of sensitive crops and higher persistence in soil, present study was conducted to isolate and identify pyrazosulfuron-ethyl degrading fungi from soil of rice field. Penicillium chrysogenum and Aspergillus niger, were isolated and identified from rhizospere soil of rice field, as potent pyrazosulfuron-ethyl degrading fungi. Degradation of pyrazosulfuron-ethyl by P. chrysogenum and A. niger, yielded transformation products/metabolites which were identified and characterized by LC/MS/MS. The rate of dissipation of pyrazosulfuron-ethyl was found higher in soil of rice field and soil inoculated with P. chrysogenum. This showed important route of degradation of pyrazosulfuron-ethyl by microbes apart from chemical degradation.
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Affiliation(s)
- Shobha Sondhia
- Department of Chemistry, Directorate of Weed Science Research, Adhartal, Jabalpur, MP, India.
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Wang NX, Tang Q, Ai GM, Wang YN, Wang BJ, Zhao ZP, Liu SJ. Biodegradation of tribenuron methyl that is mediated by microbial acidohydrolysis at cell-soil interface. CHEMOSPHERE 2012; 86:1098-1105. [PMID: 22217454 DOI: 10.1016/j.chemosphere.2011.12.013] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/13/2011] [Revised: 12/07/2011] [Accepted: 12/07/2011] [Indexed: 05/31/2023]
Abstract
Tribenuron methyl (TBM) is a member of the sulfonylurea herbicide family and is widely used in weed control. Due to its phytotoxicity to rotating-crops, concerns on TBM-pollution to soil have been raised. In this study, experimental results indicated that microbial activity played a key role in TBM removal from polluted soil. Twenty-six bacterial strains were isolated and their degradation of TBM was evaluated. Serratia sp. strain BW30 was selected and subjected to further investigation on its degradative mechanism. TBM degradation by strain BW30 was dependent on glucose that was converted into lactic or oxalic acids. HPLC-MS analysis revealed two end-products from TBM degradation, and they were identical to the products from TBM acidohydrolysis. Based on this observation, it is proposed that microbe-mediated acidohydrolysis of TBM was involved in TBM degradation in soil, and possible application of this observation in bioremediation of TBM-polluted soil is discussed.
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Affiliation(s)
- Nan-Xi Wang
- State Key Laboratory of Microbial Resources, Institute of Microbiology, Chinese Academy of Sciences, Beijing 100101, China
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Tang Q, Zhao Z, Liu Y, Wang N, Wang B, Wang Y, Zhou N, Liu S. Augmentation of tribenuron methyl removal from polluted soil with Bacillus sp. strain BS2 and indigenous earthworms. J Environ Sci (China) 2012; 24:1492-1497. [PMID: 23513692 DOI: 10.1016/s1001-0742(11)60947-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
Tribenuron methyl (TBM) is a member of the sulfonylurea herbicide family and is widely used worldwide. In this study, TBM-degrading bacteria were enriched with TBM as potential carbon, nitrogen or sulfur source, and 44 bacterial isolates were obtained. These isolates were phylogenetically diverse, and were grouped into 25 operational taxonomic units and 14 currently known genera. Three representatives, Bacillus sp. strain BS2, Microbacterium sp. strain BS3, and Cellulosimicrobium sp. strain BS11, were selected, and their growth and TBM removal from culture broth were investigated. In addition, indigenous earthworms were collected and applied to augment TBM degradation in lab-scale soil column experiments. Results demonstrated that Bacillus sp. strain BS2 and earthworms significantly increased TBM removal during soil column experiments.
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Affiliation(s)
- Qiang Tang
- State Key Laboratory of Microbial Resources, Institute of Microbiology, Chinese Academy of Sciences, Beijing 100101, China.
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20
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HPLC-DAD-MSn to investigate the photodegradation pathway of nicosulfuron in aqueous solution. Anal Bioanal Chem 2010; 399:1705-14. [PMID: 21136044 DOI: 10.1007/s00216-010-4467-0] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2010] [Revised: 11/19/2010] [Accepted: 11/23/2010] [Indexed: 11/26/2022]
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21
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Wang H, Xu J, Yates SR, Zhang J, Gan J, Ma J, Wu J, Xuan R. Mineralization of metsulfuron-methyl in Chinese paddy soils. CHEMOSPHERE 2010; 78:335-341. [PMID: 19906402 DOI: 10.1016/j.chemosphere.2009.10.023] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/27/2009] [Revised: 10/04/2009] [Accepted: 10/09/2009] [Indexed: 05/28/2023]
Abstract
A laboratory study was conducted to investigate the mineralization of metsulfuron-methyl (MSM) in paddy soils in response to soil moisture, temperature and soil properties. The results indicated that MSM mineralization was relatively limited in the paddy soils when soil temperature was low. Only 2.2-6.0% of the applied (14)C mineralized after 84d of incubation at 15 degrees C. The mineralization of MSM was enhanced by increasing soil moisture and soil temperature. Soil moisture would have different impact on the response of MSM mineralization to variation in soil temperature. An increase of 10 degrees C accelerated the average rate of MSM mineralization by 2.3 times at 50% water-holding capacity (WHC) and 1.9 times at 40% WHC. Regression analysis showed that soil pH, organic carbon contents, microbial biomass carbon contents, and silt/clay fractions were the dominant factors affecting MSM mineralization, with pH as the most important factor. The relatively slow mineralization rate of MSM suggested long persistence of this herbicide in soil, thus increasing its potential ecological risk, especially when applied in alkaline soils and in cold areas.
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Affiliation(s)
- Haizhen Wang
- Institute of Soil and Water Resources and Environmental Science, Zhejiang University, Hangzhou 310029, China
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22
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Ma JP, Wang Z, Lu P, Wang HJ, Waseem Ali S, Li SP, Huang X. Biodegradation of the sulfonylurea herbicide chlorimuron-ethyl by the strainPseudomonassp. LW3. FEMS Microbiol Lett 2009; 296:203-9. [DOI: 10.1111/j.1574-6968.2009.01638.x] [Citation(s) in RCA: 70] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
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23
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Wang H, Wu J, Yates S, Gan J. Residues of 14C-metsulfuron-methyl in Chinese paddy soils. PEST MANAGEMENT SCIENCE 2008; 64:1074-1079. [PMID: 18506672 DOI: 10.1002/ps.1607] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
BACKGROUND Metsulfuron-methyl is widely used for controlling many annual grasses and broadleaf weeds in cereal crops. Nonetheless, increasing evidence has demonstrated that even extremely low levels of metsulfuron-methyl residues in soil can be toxic to subsequent crops or non-target organisms. The behavior of herbicides in soils is mostly related to their residual forms. The intent of the present study was to investigate the dynamics of extractable residues (ERs) and non-extractable residues (NERs) of (14)C-metsulfuron-methyl in twelve Chinese paddy soils and their relationships to soil properties. RESULTS ERs decreased gradually after application, whereas NERs increased rapidly during the initial 28 days, and gradually decreased thereafter. ERs and NERs were respectively 10.1-67.9% and 5.6-28.7% of applied radioactivity in soils at 224 days after application. ERs correlated positively with soil pH and silt fractions, and negatively with microbial biomass carbon (MBC) and clay fractions, but the opposite was observed for NERs. CONCLUSION Both ERs and NERs may be present in the soil at the time of planting following rice crops, and the risk of phytotoxic effects needs to be considered. Soil pH, MBC and clay/silt fractions were the main factors in affecting the amounts of both ERs and NERs of metsulfuron-methyl in the tested soils.
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Affiliation(s)
- Haizhen Wang
- Institute of Soil and Water Resources and Environmental Science, Zhejiang University, Hangzhou 310029, China.
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Bottaro M, Frascarolo P, Gosetti F, Mazzucco E, Gianotti V, Polati S, Pollici E, Piacentini L, Pavese G, Gennaro MC. Hydrolytic and photoinduced degradation of tribenuron methyl studied by HPLC-DAD-MS/MS. JOURNAL OF THE AMERICAN SOCIETY FOR MASS SPECTROMETRY 2008; 19:1221-1229. [PMID: 18571428 DOI: 10.1016/j.jasms.2008.05.009] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/21/2007] [Revised: 05/13/2008] [Accepted: 05/13/2008] [Indexed: 05/26/2023]
Abstract
The paper studies, with the help of HPLC-DAD-MS/MS technique, the hydrolytic and photoinduced degradation processes that take place in aqueous solutions of tribenuron methyl, both when preserved in the dark and when undergoing solar box irradiation under conditions that simulate sun light. The results indicate that the degradation products formed by hydrolysis alone and by photoirradiation are the same, but kinetics of the hydrolysis reaction is much slower. The degradation products are identified as 2-methoxy-4-methylamino-6-methyl-1,3,5-triazine (P1), methyl 2-aminosulfonylbenzoate (P2), and saccharin (P3) and quantified. Ecotoxicological biotests performed on 0.1 microg L(-1) photoirradiated solutions of the herbicide give a border line toxicity situation comparable to that of the precursor and indicate that the herbicide is characterized by low persistence in the environment, as required. Its degradation, however, does not lead to mineralization but to the formation of products of comparable toxicity. To evaluate the matrix effects, the photodegradation of the herbicide is also studied in the presence of rice paddy waters: the process is slower than in ultrapure water but leads to the same products. Experiments performed for comparison by irradiating ultrapure water solutions with UV lamp (254 nm) show that the degradation process is not only faster with respect to sunlight, but gives a different pathway, without in anyway leading to mineralization.
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Affiliation(s)
- Michela Bottaro
- DISAV Dipartimento di Scienze dell'Ambiente e della Vita, University of Piemonte Orientale, via Bellini 25/G, Alessandria, Italy
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Baelum J, Nicolaisen MH, Holben WE, Strobel BW, Sørensen J, Jacobsen CS. Direct analysis of tfdA gene expression by indigenous bacteria in phenoxy acid amended agricultural soil. ISME JOURNAL 2008; 2:677-87. [PMID: 18356824 DOI: 10.1038/ismej.2008.21] [Citation(s) in RCA: 87] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Expression of the functional gene tfdA involved in degradation of phenoxyacetic acids such as 2,4-dichlorophenoxyacetic acid (2,4-D) and 4-chloro-2-methylphenoxyacetic acid (MCPA) was investigated during degradation scenarios in natural unseeded soil samples. The results illustrate how messenger RNA (mRNA)-based analysis is well suited to quantitatively study the activity of specific microbial populations in soil using phenoxyacetic acid biodegradation as a model system. Via quantitative real-time PCR, a clear response to the presence of phenoxy acids was shown during degradation in soil amended with 20 mg 2,4-D or MCPA per kg soil. Further, we found a relatively high degree of correlation between expression of the functional gene and the rates of mineralization. Melting curve analyses of real-time PCR products, supported by tfdA-denaturing gradient gel electrophoresis analysis showed that, although only class I tfdA genes were apparent in the indigenous microbial population, class III tfdA genes became predominant during incubation, and were the only genes expressed during degradation of MCPA in soil. In contrast, both classes were expressed during degradation of the structurally similar compound 2,4-D. The ability to quantify microbial transcripts directly in environmental samples will have a profound impact on our understanding of microbial processes in the environment in future studies.
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Affiliation(s)
- Jacob Baelum
- Department of Geochemistry, Geological Survey of Denmark and Greenland (GEUS), Copenhagen K, Denmark
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26
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He YH, Shen DS, Fang CR, Zhu YM. Rapid biodegradation of metsulfuron-methyl by a soil fungus in pure cultures and soil. World J Microbiol Biotechnol 2006. [DOI: 10.1007/s11274-006-9148-y] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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27
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Sørensen SR, Schultz A, Jacobsen OS, Aamand J. Sorption, desorption and mineralisation of the herbicides glyphosate and MCPA in samples from two Danish soil and subsurface profiles. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2006; 141:184-94. [PMID: 16203072 DOI: 10.1016/j.envpol.2005.07.023] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/18/2005] [Accepted: 07/01/2005] [Indexed: 05/04/2023]
Abstract
The vertical distribution of the sorption, desorption and mineralisation of glyphosate and MCPA was examined in samples from two contrasting soil and subsurface profiles, obtained from a sandy agricultural site and a non-agricultural clay rich site. The highest mineralisation of [14C-methylen]glyphosate, with 9.3-14.7% degraded to 14CO2 within 3 months was found in the deepest sample from the clay site. In the deeper parts of the sandy profile high sorption and low desorption of glyphosate coincided with no or minor mineralisation indicating a limited glyphosate bioavailability. MCPA was readily mineralised except in the deepest samples from both sites. The highest MCPA mineralisation was detected just below the surface layers with 72% or 44% degraded to 14CO2 at the sandy or the clay sites, respectively. MCPA sorped to a minor extent in all samples and no indications of sorption-controlled mineralisation was revealed. None of the herbicides were mineralised under anoxic conditions.
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Affiliation(s)
- Sebastian R Sørensen
- Department of Geochemistry, Geological Survey of Denmark and Greenland (GEUS), Øster Voldgade 10, DK-1350 Copenhagen K, Denmark.
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Baelum J, Henriksen T, Hansen HCB, Jacobsen CS. Degradation of 4-chloro-2-methylphenoxyacetic acid in top- and subsoil is quantitatively linked to the class III tfdA gene. Appl Environ Microbiol 2006; 72:1476-86. [PMID: 16461702 PMCID: PMC1392919 DOI: 10.1128/aem.72.2.1476-1486.2006] [Citation(s) in RCA: 76] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
The tfdA gene is known to be involved in the first step of the degradation of the phenoxy acid herbicide 4-chloro-2-methylphenoxyacetic acid (MCPA) in several soil bacteria, but bacteria containing other tfdA-like genes have been isolated as well. A quantitative real-time PCR method was used to monitor the increase in the concentration of tfdA genes during degradation of MCPA in sandy topsoil and subsoil over a period of 115 days. Quantitative PCR revealed growth in the tfdA-containing bacterial community, from 500 genes g(-1) soil to approximately 3 x 10(4) genes g(-1) soil and to 7 x 10(5) genes g(-1) soil for topsoil initially added to 2.3 mg MCPA kg(-1) (dry weight) soil and 20 mg MCPA kg(-1) (dry weight) soil, respectively. We analyzed the diversity of the tfdA gene during the degradation experiment. Analyses of melting curves of real-time PCR amplification products showed that a shift in the dominant tfdA population structure occurred during the degradation period. Further denaturing gradient gel electrophoresis and sequence analysis revealed that the tfdA genes responsible for the degradation of MCPA belonged to the class III tfdA genes, while the tfdA genes present in the soil before the occurrence of degradation belonged to the class I tfdA genes. The implications of these results is that the initial assessment of functional genes in soils does not necessarily reflect the organisms or genes that would carry out the degradation of the compounds in question.
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Affiliation(s)
- Jacob Baelum
- Department of Geochemistry, Geological Survey of Denmark and Greenland, Øster Voldgade 10, DK-1350 Copenhagen K, Denmark
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Si Y, Wang S, Zhou J, Hua R, Zhou D. Leaching and degradation of ethametsulfuron-methyl in soil. CHEMOSPHERE 2005; 60:601-9. [PMID: 15963798 DOI: 10.1016/j.chemosphere.2005.01.051] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/05/2004] [Revised: 10/19/2004] [Accepted: 01/18/2005] [Indexed: 05/03/2023]
Abstract
Leaching and degradation of the herbicide ethametsulfuron-methyl[methyl 2-[(4-ethoxy-6-methylamino-1,3,5-triazine-2-yl)carbamoylsulfamoyl]benzoate] in three soils were investigated under laboratory conditions. Ethametsulfuron-methyl was mobile on soils when tested using non-aged and aged soil columns; this mobility agreed reasonably well with Freundlich soil isotherm constants. It was found that ethametsulfuron-methyl was more mobile in alkaline sandy Vertisol soil and neutral loamy Alfisol soil than in acidic clayey Red soil. Degradation of ethametsulfuron-methyl in soils was pH-dependent; calculated half-life (t(1/2)) values ranged from 13 to 67 days. Ethametsulfuron-methyl was more persistent in neutral or weakly basic than in acidic soil. Five soil metabolites were isolated and identified by LC/MS/MS analysis. The degradation pathways included the cleavage of the sulfonylurea bridge, N- and O-dealkylation, and triazine ring opening.
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Affiliation(s)
- Youbin Si
- College of Resource and Environmental Science, Anhui Agricultural University, Hefei 230036, China.
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Taylor JP, Mills MS, Burns RG. Dissipation of acetochlor and its distribution in surface and sub-surface soil fractions during laboratory incubations. PEST MANAGEMENT SCIENCE 2005; 61:539-548. [PMID: 15657909 DOI: 10.1002/ps.1006] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
Pesticides in soil are subject to a number of processes that result in transformation and biodegradation, sorption to and desorption from soil components, and diffusion and leaching. Pesticides leaching through a soil profile will be exposed to changing environmental conditions as different horizons with distinct physical, chemical and biological properties are encountered. The many ways in which soil properties influence pesticide retention and degradation need to be addressed to allow accurate predictions of environmental fate and the potential for groundwater pollution. Degradation and sorption processes were investigated in a long-term (100 days) study of the chloroacetanilide herbicide, acetochlor. Soil cores were collected from a clay soil profile and samples taken from 0-30 cm (surface), 1.0-1.3 m (mid) and 2.7-3.0 m (deep) and treated with acetochlor (2.5, 1.25, 0.67 microg acetochlor g(-1) dry wt soil, respectively). In sterile and non-sterile conditions, acetochlor concentration in the aqueous phase declined rapidly from the surface and subsoil layers, predominantly through nonextractable residue (NER) formation on soil surfaces, but also through biodegradation and biotic transformation. Abiotic transformation was also evident in the sterile soils. Several metabolites were produced, including acetochlor-ethane sulphonic acid and acetochlor-oxanilic acid. Transformation was principally microbial in origin, as shown by the differences between non-sterile and sterile soils. NER formation increased rapidly over the first 21 days in all soils and was mainly associated with the macroaggregate (>2000 microm diameter) size fractions. It is likely that acetochlor is incorporated into the macroaggregates through oxidative coupling, as humification of particulate organic matter progresses. The dissipation (ie total loss of acetochlor) half-life values were 9.3 (surface), 12.3 (mid) and 12.6 days (deep) in the non-sterile soils, compared with 20.9 [surface], 23.5 [mid], and 24 days [deep] in the sterile soils, demonstrating the importance of microbially driven processes in the rapid dissipation of acetochlor in soil.
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Affiliation(s)
- Jason P Taylor
- Research School of Biosciences, University of Kent, Canterbury, Kent CT2 7NJ, UK
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