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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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Song J, Gu J, Zhai Y, Wu W, Wang H, Ruan Z, Shi Y, Yan Y. Biodegradation of nicosulfuron by a Talaromyces flavus LZM1. BIORESOURCE TECHNOLOGY 2013; 140:243-248. [PMID: 23707911 DOI: 10.1016/j.biortech.2013.02.086] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/13/2012] [Revised: 02/20/2013] [Accepted: 02/22/2013] [Indexed: 06/02/2023]
Abstract
The fungal strain LZM1 was isolated from activated sludge and found to be capable of utilizing nicosulfuron as the sole nitrogen source for growth. Based on morphological and internal transcribed spacer evaluations, LZM1 was identified as a Talaromyces flavus strain. Under optimum conditions (pH 6.1, 29°C), T. flavus LZM1 degraded 100% of the initially added nicosulfuron (100 mg L(-1)) within 5d. T. flavus LZM1 was also found to be highly efficient in degrading tribenuron methyl, chlorsulfuron, bensulfuron methyl, ethametsulfuron methyl, cinosulfuron, and rimsulfuron. Metabolites from nicosulfuron degradation were identified by liquid chromatography mass spectrometry, and a possible degradation pathway was deduced. These results show that T. flavus LZM1 may possess potential to be used in bioremediation of nicosulfuron-contaminated environments.
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Affiliation(s)
- Jinlong Song
- Graduate School, Chinese Academy of Agricultural Sciences, Beijing 100081, China
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Peng X, Huang J, Liu C, Xiang Z, Zhou J, Zhong G. Biodegradation of bensulphuron-methyl by a novel Penicillium pinophilum strain, BP-H-02. JOURNAL OF HAZARDOUS MATERIALS 2012; 213-214:216-221. [PMID: 22365387 DOI: 10.1016/j.jhazmat.2012.01.077] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/09/2011] [Revised: 12/30/2011] [Accepted: 01/25/2012] [Indexed: 05/31/2023]
Abstract
A fungal strain able to rapidly degrade bensulphuron-methyl (BSM), called BP-H-02, was isolated for the first time from soil that had been contaminated with BSM for several years. BP-H-02 can use BSM as the sole carbon and energy source for growth in a mineral salt medium. Based on morphological and internal transcribed spacer (ITS) analysis, BP-H-02 was identified as Penicillium pinophilum. Under optimal conditions (pH 6.5, temperature 30 °C and 200 mg/L VSSinoculum), more than 87% of the initially added BSM (50mg/L) was degraded after 60 h. Metabolites were identified as 2-amino-4,6-dimethoxypyrimidine and 1-(4,6-dimethoxypyrimidin-2-yl) urea by liquid chromatography-mass spectrometry (LC-MS), and a possible degradation pathway was deduced. In a soil bioremediation experiment, inoculation of soil with BP-H-02 promoted the degradation of BSM more effectively than did the control. These results revealed that BP-H-02 can biodegrade bensulphuron-methyl efficiently and could potentially be used to bioremediate sulphonylurea herbicides contamination.
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Affiliation(s)
- Xingxing Peng
- Key Laboratory of Pesticide and Chemical Biology, Ministry of Education; and Laboratory of Insect Toxicology, South China Agricultural University, Guangzhou 510642, PR China
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Pizzul L, Pilar Castillo MD, Stenström J. Characterization of selected actinomycetes degrading polyaromatic hydrocarbons in liquid culture and spiked soil. World J Microbiol Biotechnol 2006. [DOI: 10.1007/s11274-005-9100-6] [Citation(s) in RCA: 53] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Mostafa FIY, Helling CS. Isolation and 16S DNA characterization of soil microorganisms from tropical soils capable of utilizing the herbicides hexazinone and tebuthiuron. JOURNAL OF ENVIRONMENTAL SCIENCE AND HEALTH. PART. B, PESTICIDES, FOOD CONTAMINANTS, AND AGRICULTURAL WASTES 2003; 38:783-797. [PMID: 14649709 DOI: 10.1081/pfc-120025579] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
Six non-fermentative bacteria were isolated from Colombian (South America) and Hawaiian (USA) soils after enrichment with minimal medium supplemented with two herbicides, hexazinone (Hex) and tebuthiuron (Teb). Microscopic examination and physiological tests were followed by partial 16S DNA sequence analysis, using the first 527 bp of the 16S rRNA gene for bacterial identification. The isolated microorganisms (and in brackets, the herbicide that each degraded) were identified as: from Colombia. Methylobacterium organophilum [Teb], Paenibacillus pabuli [Teb], and Micrmbacterium foliorum [Hex]; and from Hawaii, Methylobacterium radiotolerans [Teb], Paenibacillus illinoisensis [Hex], and Rhodococcus equi [Hex]. The findings further explain how these herbicides, which have potential for illicit coca (Erythroxylum sp.) control, dissipate following their application to tropical soils.
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Affiliation(s)
- Fadwa I Y Mostafa
- Alternate Crops and Systems Laboratory, Agricultural Research Service, US Department of Agriculture, Beltsville, Maryland 20705, USA
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