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Bharti J, Verma R, Gupta I, Chakraborty P, Eashwaran M, Sony SK, Nehra M, Thangraj A, Kaul R, Fathy K, Kaul T. Functional characterization of novel mutations in the conserved region of EPSPS for herbicide resistance in pigeonpea: structure-based coherent design. J Biomol Struct Dyn 2024; 42:6065-6080. [PMID: 37652402 DOI: 10.1080/07391102.2023.2243522] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2023] [Accepted: 06/21/2023] [Indexed: 09/02/2023]
Abstract
Prospectively, agroecosystems for the growth of crops provide the potential fertile, productive, and tropical environment which attracts infestation by weedy plant species that compete with the primary crop plants. Infestation by weed is a major biotic stress factor faced by pigeonpea that hampers the productivity of the crop. In the modern era with the development of chemicals the problem of weed infestation is dealt with armours called herbicides. The most widely utilized, post-emergent, broad-spectrum herbicide has an essential active ingredient called glyphosate. Glyphosate mechanistically inhibits a chloroplastic enzyme 5-enolpyruvylshikimate-3-phosphate synthase (EPSPS) by competitively interacting with the PEP binding site which hinders the shikimate pathway and the production of essential aromatic amino acids (Phe, Tyr, Trp) and other secondary metabolites in plants. Moreover, herbicide spray for weed management is lethal to both the primary crop and the weeds. Therefore, it is critical to develop herbicide-resistant crops for field purposes to reduce the associated yield and economic losses. In this study, the in-silico analysis drove the selection and validation of the point mutations in the conserved region of the EPSPS gene, which confers efficient herbicide resistance to mutated-CcEPSPS enzyme along with the retention of the normal enzyme function. An optimized in-silico validation of the target mutation before the development of the genome-edited resistant plant lines is a prerequisite for testing their efficacy as a proof of concept. We validated the combination of GATIPS mutation for its no-cost effect at the enzyme level via molecular dynamic (MD) simulation.Communicated by Ramaswamy H. Sarma.
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Affiliation(s)
- Jyotsna Bharti
- Nutritional Improvement of Crops Group, Plant Biology & Biotechnology, International Centre for Genetic Engineering and Biotechnology (ICGEB), New Delhi, India
| | - Rachana Verma
- Nutritional Improvement of Crops Group, Plant Biology & Biotechnology, International Centre for Genetic Engineering and Biotechnology (ICGEB), New Delhi, India
| | - Isha Gupta
- Nutritional Improvement of Crops Group, Plant Biology & Biotechnology, International Centre for Genetic Engineering and Biotechnology (ICGEB), New Delhi, India
| | - Puja Chakraborty
- Nutritional Improvement of Crops Group, Plant Biology & Biotechnology, International Centre for Genetic Engineering and Biotechnology (ICGEB), New Delhi, India
| | - Murugesh Eashwaran
- Nutritional Improvement of Crops Group, Plant Biology & Biotechnology, International Centre for Genetic Engineering and Biotechnology (ICGEB), New Delhi, India
| | - Sonia Khan Sony
- Nutritional Improvement of Crops Group, Plant Biology & Biotechnology, International Centre for Genetic Engineering and Biotechnology (ICGEB), New Delhi, India
| | - Mamta Nehra
- Nutritional Improvement of Crops Group, Plant Biology & Biotechnology, International Centre for Genetic Engineering and Biotechnology (ICGEB), New Delhi, India
| | - Arulprakash Thangraj
- Nutritional Improvement of Crops Group, Plant Biology & Biotechnology, International Centre for Genetic Engineering and Biotechnology (ICGEB), New Delhi, India
| | - Rashmi Kaul
- Nutritional Improvement of Crops Group, Plant Biology & Biotechnology, International Centre for Genetic Engineering and Biotechnology (ICGEB), New Delhi, India
| | - Khaled Fathy
- Nutritional Improvement of Crops Group, Plant Biology & Biotechnology, International Centre for Genetic Engineering and Biotechnology (ICGEB), New Delhi, India
| | - Tanushri Kaul
- Nutritional Improvement of Crops Group, Plant Biology & Biotechnology, International Centre for Genetic Engineering and Biotechnology (ICGEB), New Delhi, India
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Cornish CM, Johnson OF, Bansal S, Meier JA, Harris TD, Sweetman JN. Common use herbicides increase wetland greenhouse gas emissions. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 933:172881. [PMID: 38701922 DOI: 10.1016/j.scitotenv.2024.172881] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/26/2024] [Revised: 04/27/2024] [Accepted: 04/27/2024] [Indexed: 05/05/2024]
Abstract
Wetlands play a disproportionate role in the global climate as major sources and sinks of greenhouse gases. Herbicides are the most heavily used agrochemicals and are frequently detected in aquatic ecosystems, with glyphosate and 2,4-Dichlorophenoxyacetic acid (2,4-D), representing the two most commonly used worldwide. In recent years, these herbicides are being used in mixtures to combat herbicide-tolerant noxious weeds. While it is well documented that herbicide use for agriculture is expected to increase, their indirect effects on wetland greenhouse gas dynamics are virtually unknown. To fill this knowledge gap, we conducted a factorial microcosm experiment using low, medium, and high concentrations of glyphosate or 2,4-D, individually and in combination to investigate their effects on wetland methane, carbon dioxide, and nitrous oxide fluxes. We predicted that mixed herbicide treatments would have a synergistic effect on greenhouse gases compared to individual herbicides. Our results showed that carbon dioxide flux rates and cumulative emissions significantly increased from both individual and mixed herbicide treatments, whereas methane and nitrous oxide dynamics were less affected. This study suggests that extensive use of glyphosate and 2,4-D may increase carbon dioxide emissions from wetlands, which could have implications for climate change.
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Affiliation(s)
- Christine M Cornish
- Environmental and Conservation Sciences, North Dakota State University, 1340 Administration Avenue, Fargo, ND 58105, United States.
| | - Olivia F Johnson
- U.S. Geological Survey, Northern Prairie Wildlife Research Center, Jamestown, ND, United States; Department of Biological Sciences, Kent State University, Kent, OH, United States
| | - Sheel Bansal
- U.S. Geological Survey, Northern Prairie Wildlife Research Center, Jamestown, ND, United States
| | - Jacob A Meier
- U.S. Geological Survey, Northern Prairie Wildlife Research Center, Jamestown, ND, United States
| | - Ted D Harris
- Kansas Biological Survey and Center for Ecological Research, Lawrence, KS, United States
| | - Jon N Sweetman
- Department of Ecosystem Science and Management, The Pennsylvania State University, 457 ASI Building, University Park, PA 16802, United States
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3
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Souza MMV, Souza ADV, Rodrigues AA, Batista PF, Castro ST, Silva IMHL, Jakelaitis A, Costa AC, Sales JF. The allelopathic effects of aqueous Talinum triangulare (jacq.) willd extracts on the development of Lactuca sativa L. seedlings. BRAZ J BIOL 2024; 84:e279983. [PMID: 38922190 DOI: 10.1590/1519-6984.279983] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2023] [Accepted: 04/09/2024] [Indexed: 06/27/2024] Open
Abstract
Plants that produce allelopathic compounds against weeds have emerged as a potential solution for the development of ecologically correct bioherbicides. Talinum triangulare is noteworthy in this regard, as its phytochemical composition encompasses flavonoids, alkaloids and other metabolites that can be used to develop inhibitory weed growth solutions. Lactuca sativa (lettuce) has been widely applied as a bioindicator species for bioherbicides and several chemicals, animal waste, water and soil quality, and atmospheric contamination, among others. In this context, this study aimed to assess the potential allelopathic effect of aqueous T. triangulare extracts on the development of L. sativa seedlings. A completely randomized design employing a 2x4 factorial scheme (shoot and root extracts) x the concentration of each extract (0, 2.5, 5, 7.5%) was applied, comprising four replications. Lactuca sativa seeds were sown on germitest papers soaked with the extracts in a germination chamber at 20°C. Physiological seed evaluations comprising the germination test, where normal and abnormal seedlings are counted on the seventh day after sowing, first normal seedling counts on the fourth day after sowing, and seedling and root length measurements. At the end of the germination test, L. sativa seedlings were separated for morphoanatomical characterizations and chlorophyll a fluorescence analyses. The T. triangulare extracts significantly influenced L. sativa root growth, with shoot extract exposure leading to more abnormal plants and lower root lengths at increasing concentrations and compared to the root extract. Root extract exposure led to evident cellular changes and lower non-photochemical quenching and unregulated dissipation quantum yields at a 5% exposure dose compared to shoot extract exposure. These findings suggest that both aqueous T. triangulare root and shoot extracts from 5% exposure doses exhibit high potential as bioherbicides, acting directly on plant structure, anatomy, quality, size and physiology.
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Affiliation(s)
- M M V Souza
- Instituto Federal de Educação Ciência e Tecnologia Goiano, Campus Rio Verde, Laboratório de Sementes, Rio Verde, GO, Brasil
| | - A D V Souza
- Instituto Federal de Educação Ciência e Tecnologia Goiano, Campus Rio Verde, Laboratório de Sementes, Rio Verde, GO, Brasil
| | - A A Rodrigues
- Instituto Federal de Educação Ciência e Tecnologia Goiano, Campus Rio Verde, Laboratório de Sementes, Rio Verde, GO, Brasil
| | - P F Batista
- Instituto Federal de Educação Ciência e Tecnologia Goiano, Campus Rio Verde, Laboratório de Ecofisiologia e Produtividade Vegetal, Rio Verde, GO, Brasil
| | - S T Castro
- Instituto Federal de Educação Ciência e Tecnologia Goiano, Campus Rio Verde, Laboratório de Sementes, Rio Verde, GO, Brasil
| | - I M H L Silva
- Instituto Federal de Educação Ciência e Tecnologia Goiano, Campus Rio Verde, Laboratório de Sementes, Rio Verde, GO, Brasil
| | - A Jakelaitis
- Instituto Federal de Educação Ciência e Tecnologia Goiano, Campus Rio Verde, Laboratório de Plantas daninhas, Rio Verde, GO, Brasil
| | - A C Costa
- Instituto Federal de Educação Ciência e Tecnologia Goiano, Campus Rio Verde, Laboratório de Ecofisiologia e Produtividade Vegetal, Rio Verde, GO, Brasil
| | - J F Sales
- Instituto Federal de Educação Ciência e Tecnologia Goiano, Campus Rio Verde, Laboratório de Sementes, Rio Verde, GO, Brasil
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Lapierre C, Erlandson LW, Stoneroad II R, Rhiner A, Gosnell R, Barber J, Pham L. Substances of health concern in home-distilled and commercial alcohols from Texas. Heliyon 2024; 10:e32317. [PMID: 38912503 PMCID: PMC11190660 DOI: 10.1016/j.heliyon.2024.e32317] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2024] [Revised: 05/30/2024] [Accepted: 05/31/2024] [Indexed: 06/25/2024] Open
Abstract
Objective Poor distillation practices in the production of spirits have historically resulted in many instances of adverse health outcomes including death. Concern has focused on lead and copper contamination as well as unhealthy levels of methanol and glyphosate. This study assesses home-distilled and commercially distilled alcohols from Texas for these substances of concern, highlighting their potential risks to public health. Methods Atomic absorption spectroscopy, gas chromatography, and enzyme-linked immunosorbent assay were employed to determine lead and copper, methanol, and glyphosate levels in 12 commercial and 36 home-distilled alcohol samples. Results Our findings showed that 11 % of the home-distilled alcohols exceeded the U.S. Alcohol and Tobacco Tax and Trade Bureau's copper safety limits of 0.5 mg/L for wine. Additionally, 36 % of these samples surpassed the European Commission (EC)'s lead legal threshold of 0.15 mg/L set for wine products. Results from commercial alcohols indicated that no samples exceeded the same safety limits for copper, and 33 % exceeded the same legal threshold for lead. Both commercial and home-distilled alcohols exhibited methanol concentrations remarkably below the 0.35 % limit for brandy set by the U.S. Food and Drug Administration. Only two home-distilled samples contained detectable glyphosate concentrations well below 100 μg/L, the maximum residue level in beer and wine established by the EC. Conclusions Our findings suggested that consumption of alcohol in Texas may pose potential health risks associated with the elevated content of lead and copper. There is a need for increased focus on alcohol as a potential source of exposure to heavy metals.
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Affiliation(s)
- Coady Lapierre
- Department of Counseling and Psychology, Texas A&M University-Central Texas, Texas, USA
| | | | - Randy Stoneroad II
- Department of Mathematics and Sciences, Texas A&M University-Central Texas, Texas, USA
| | - Andrew Rhiner
- Department of Mathematics and Sciences, Texas A&M University-Central Texas, Texas, USA
| | - Renae Gosnell
- Department of Mathematics and Sciences, Texas A&M University-Central Texas, Texas, USA
| | - John Barber
- Department of Mathematics and Sciences, Texas A&M University-Central Texas, Texas, USA
| | - Linh Pham
- Department of Mathematics and Sciences, Texas A&M University-Central Texas, Texas, USA
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5
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Weng RC, Tsou MC, Lee JL, Tseng CM, Huang YF, Xiao YL, Lu YP, Chou WC, Chang RF, Chuang CY. Development of a rapid aptamer-chemiluminescence sensor for detecting glyphosate pesticide residue in soybeans. Talanta 2024; 272:125741. [PMID: 38359718 DOI: 10.1016/j.talanta.2024.125741] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2023] [Revised: 01/23/2024] [Accepted: 02/01/2024] [Indexed: 02/17/2024]
Abstract
Glyphosate (GLY) is a widely used herbicide worldwide, particularly in cultivating genetically modified soybeans resistant to GLY. However, routine multi-residue analysis does not include GLY due to the complexity of soybean matrix components that can interfere with the analysis. This study presented the development of an aptamer-based chemiluminescence (Apt-CL) sensor for rapidly screening GLY pesticide residue in soybeans. The GLY-binding aptamer (GBA) was developed to bind to GLY specifically, and the remaining unbound aptamers were adsorbed onto gold nanoparticles (AuNPs). The signal was in the form of luminol-H2O2 emission, catalyzed by the aggregation of AuNPs in a chemiluminescent reaction arising from the GLY-GBA complex. The outcomes demonstrated a robust linear relationship between the CL intensity of GLY-GBA and the GLY concentration. In the specificity test of the GBA, only GLY and Profenofos were distinguished among the fifteen tested pesticides. Furthermore, the Apt-CL sensor was conducted to determine GLY residue in organic soybeans immersed in GLY as a real sample, and an optimal linear concentration range for detection after extraction was found to be between 0.001 and 10 mg/L. The Apt-CL sensor exploits the feasibility of real-time pesticide screening in food safety.
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Affiliation(s)
- Rui-Cian Weng
- Graduate Institute of Biomedical Electronics and Bioinformatics, National Taiwan University, Taipei, Taiwan
| | - Min-Cheng Tsou
- Department of Biomedical Engineering and Environmental Sciences, National Tsing Hua University, Hsinchu, Taiwan
| | - Jyun-Lin Lee
- Department of Biomedical Engineering and Environmental Sciences, National Tsing Hua University, Hsinchu, Taiwan
| | - Chao-Ming Tseng
- Department of Biomedical Engineering and Environmental Sciences, National Tsing Hua University, Hsinchu, Taiwan; Residue Control Division, Agricultural Chemicals and Toxic Substances Research Institute, Council of Agriculture, Executive Yuan, Taichung, Taiwan
| | - Yu-Fen Huang
- Institute of Analytical and Environmental Sciences, National Tsing Hua University, Hsinchu, Taiwan
| | - Yu-Lin Xiao
- Department of Biomedical Engineering and Environmental Sciences, National Tsing Hua University, Hsinchu, Taiwan
| | - Yen-Pei Lu
- Instrument Research Institute, National Applied Research Laboratories, Hsinchu, Taiwan
| | - Wei-Chun Chou
- Department of Environmental Sciences, College of Natural and Agricultural Sciences, University of California, Riverside, CA, United States
| | - Ruey-Feng Chang
- Graduate Institute of Biomedical Electronics and Bioinformatics, National Taiwan University, Taipei, Taiwan; Department of Computer Science and Information Engineering, National Taiwan University, Taipei, Taiwan.
| | - Chun-Yu Chuang
- Department of Biomedical Engineering and Environmental Sciences, National Tsing Hua University, Hsinchu, Taiwan.
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6
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Cornelsen JE, Ort NW, Gabert RK, Epp I, Rempel CB. Current and potential pest threats for canola in the Canadian Prairies. PEST MANAGEMENT SCIENCE 2024; 80:2220-2234. [PMID: 37899491 DOI: 10.1002/ps.7858] [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: 12/14/2022] [Revised: 10/07/2023] [Accepted: 10/26/2023] [Indexed: 10/31/2023]
Abstract
Canola/oilseed rape (Brassica napus L.) production in Canada has increased to become a foundational crop in the Canadian Prairies and an important economic driver of this region. The increase in seeded area, and by association its reduction in-crop rotation frequency, has made it easier for pests to overcome current recommended agronomic management practices. The Canola Council of Canada has been successful in involving the entire commodity value chain in promoting and strengthening the Canadian canola industry; however, because of this production increase it is critically important to understand, evaluate and mitigate the potential risks of canola yield losses to current and potential pests. This Perspective provides an overview of what are currently the most damaging insects, pathogens and weeds to canola in the Canadian Prairies, potential future threats and opportunities farmers, agronomists and researchers can take to minimize these risks. © 2023 Society of Chemical Industry.
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Affiliation(s)
| | - Nathaniel Ww Ort
- Canola Council of Canada, Winnipeg, Canada
- University of Saskatchewan, Saskatoon, Canada
| | | | - Ian Epp
- Canola Council of Canada, Winnipeg, Canada
| | - Curtis B Rempel
- Canola Council of Canada, Winnipeg, Canada
- University of Manitoba, Winnipeg, Canada
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7
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Díaz-Soto JA, Mussali-Galante P, Castrejón-Godínez ML, Saldarriaga-Noreña HA, Tovar-Sánchez E, Rodríguez A. Glyphosate resistance and biodegradation by Burkholderia cenocepacia CEIB S5-2. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2024; 31:37480-37495. [PMID: 38776026 DOI: 10.1007/s11356-024-33772-2] [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: 02/21/2024] [Accepted: 05/19/2024] [Indexed: 06/20/2024]
Abstract
Glyphosate is a broad spectrum and non-selective herbicide employed to control different weeds in agricultural and urban zones and to facilitate the harvest of various crops. Currently, glyphosate-based formulations are the most employed herbicides in agriculture worldwide. Extensive use of glyphosate has been related to environmental pollution events and adverse effects on non-target organisms, including humans. Reducing the presence of glyphosate in the environment and its potential adverse effects requires the development of remediation and treatment alternatives. Bioremediation with microorganisms has been proposed as a feasible alternative for treating glyphosate pollution. The present study reports the glyphosate resistance profile and degradation capacity of the bacterial strain Burkholderia cenocepacia CEIB S5-2, isolated from an agricultural field in Morelos-México. According to the agar plates and the liquid media inhibition assays, the bacterial strain can resist glyphosate exposure at high concentrations, 2000 mg·L-1. In the degradation assays, the bacterial strain was capable of fast degrading glyphosate (50 mg·L-1) and the primary degradation metabolite aminomethylphosphonic acid (AMPA) in just eight hours. The analysis of the genomic data of B. cenocepacia CEIB S5-2 revealed the presence of genes that encode enzymes implicated in glyphosate biodegradation through the two metabolic pathways reported, sarcosine and AMPA. This investigation provides novel information about the potential of species of the genus Burkholderia in the degradation of the herbicide glyphosate and its main degradation metabolite (AMPA). Furthermore, the analysis of genomic information allowed us to propose for the first time a metabolic route related to the degradation of glyphosate in this bacterial group. According to the findings of this study, B. cenocepacia CEIB S5-2 displays a great glyphosate biodegradation capability and has the potential to be implemented in glyphosate bioremediation approaches.
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Affiliation(s)
- José Antonio Díaz-Soto
- Doctorado en Ciencias Naturales, Universidad Autónoma del Estado de Morelos, Av. Universidad 1001, Col. Chamilpa, Cuernavaca, CP, 62209, México
| | - Patricia Mussali-Galante
- Centro de Investigación en Biotecnología, Universidad Autónoma del Estado de Morelos, Av. Universidad, 1001, Col. Chamilpa, Cuernavaca, CP, 62209, Morelos, México
| | - María Luisa Castrejón-Godínez
- Facultad de Ciencias Biológicas, Universidad Autónoma del Estado de Morelos, Av. Universidad, 1001, Col. Chamilpa, Cuernavaca, CP, 62209, Morelos, México
| | - Hugo Albeiro Saldarriaga-Noreña
- Centro de Investigaciones Químicas, Universidad Autónoma del Estado de Morelos, Av. Universidad, 1001, Col. Chamilpa, Cuernavaca, CP, 62209, Morelos, México
| | - Efraín Tovar-Sánchez
- Centro de Investigación en Biodiversidad y Conservación, Universidad Autónoma del Estado de Morelos, Av. Universidad, 1001, Col. Chamilpa, Cuernavaca, CP, 62209, Morelos, México
| | - Alexis Rodríguez
- Centro de Investigación en Biotecnología, Universidad Autónoma del Estado de Morelos, Av. Universidad, 1001, Col. Chamilpa, Cuernavaca, CP, 62209, Morelos, México.
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8
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Metcalfe H, Storkey J, Hull R, Bullock JM, Whitmore A, Sharp RT, Milne AE. Trade-offs constrain the success of glyphosate-free farming. Sci Rep 2024; 14:8001. [PMID: 38580796 PMCID: PMC10997608 DOI: 10.1038/s41598-024-58183-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2023] [Accepted: 03/26/2024] [Indexed: 04/07/2024] Open
Abstract
Glyphosate, the most widely used herbicide, is linked with environmental harm and there is a drive to replace it in agricultural systems. We model the impacts of discontinuing glyphosate use and replacing it with cultural control methods. We simulate winter wheat arable systems reliant on glyphosate and typical in northwest Europe. Removing glyphosate was projected to increase weed abundance, herbicide risk to the environment, and arable plant diversity and decrease food production. Weed communities with evolved resistance to non-glyphosate herbicides were not projected to be disproportionately affected by removing glyphosate, despite the lack of alternative herbicidal control options. Crop rotations with more spring cereals or grass leys for weed control increased arable plant diversity. Stale seedbed techniques such as delayed drilling and choosing ploughing instead of minimum tillage had varying effects on weed abundance, food production, and profitability. Ploughing was the most effective alternative to glyphosate for long-term weed control while maintaining production and profit. Our findings emphasize the need for careful consideration of trade-offs arising in scenarios where glyphosate is removed. Integrated Weed Management (IWM) with more use of cultural control methods offers the potential to reduce chemical use but is sensitive to seasonal variability and can incur negative environmental and economic impacts.
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Affiliation(s)
- H Metcalfe
- Net Zero & Resilient Farming, Rothamsted Research, Harpenden, AL5 2JQ, UK.
| | - J Storkey
- Protecting Crops and the Environment, Rothamsted Research, Harpenden, AL5 2JQ, UK
| | - R Hull
- Protecting Crops and the Environment, Rothamsted Research, Harpenden, AL5 2JQ, UK
| | - J M Bullock
- UK Centre for Ecology & Hydrology, Wallingford, OX10 8BB, UK
| | - A Whitmore
- Net Zero & Resilient Farming, Rothamsted Research, Harpenden, AL5 2JQ, UK
| | - R T Sharp
- Net Zero & Resilient Farming, Rothamsted Research, Harpenden, AL5 2JQ, UK
| | - A E Milne
- Net Zero & Resilient Farming, Rothamsted Research, Harpenden, AL5 2JQ, UK
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9
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Ren Z, Gibson DJ, Gage KL, Matthews JL, Owen MDK, Jordan DL, Shaw DR, Weller SC, Wilson RG, Young BG. Exploring the effect of region on diversity and composition of weed seedbanks in herbicide-resistant crop systems in the United States. PEST MANAGEMENT SCIENCE 2024; 80:1446-1453. [PMID: 37946692 DOI: 10.1002/ps.7875] [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: 09/05/2022] [Revised: 10/04/2023] [Accepted: 11/10/2023] [Indexed: 11/12/2023]
Abstract
BACKGROUND Soil seedbanks have been recognized as one of the crucial components of agricultural ecosystems. However, studies on the shift in structure and biodiversity of soil seedbanks in herbicide-resistant crop systems are limited, and a functional trait perspective of the soil seedbank is often overlooked. RESULTS A 6 years experiment was conducted to investigate the roles of region, crop system, and weed management strategy on species richness, functional trait diversity, and composition of the weed seedbank. Species richness was different across the interaction of region and crop system, while functional trait diversity only showed difference across regions. Species and functional trait compositions were affected by the interaction of region and crop system. Specifically, the compositional difference among crop systems was mainly determined by the significant heterogeneity of group dispersion. CONCLUSION Growers and practitioners should consider weed functional traits in developing lasting agricultural management strategies. Long-term weed research should draw attention to the impact of transgenic crop systems and specific management tactics on weed dispersal, functional composition, and resistance evolution of weed species in such agroecosystems. © 2023 The Authors. Pest Management Science published by John Wiley & Sons Ltd on behalf of Society of Chemical Industry.
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Affiliation(s)
- Zhe Ren
- Department of Botany and Plant Pathology, Purdue University, West Lafayette, Indiana, USA
- School of Biological Sciences, Southern Illinois University, Carbondale, Illinois, USA
| | - David J Gibson
- School of Biological Sciences, Southern Illinois University, Carbondale, Illinois, USA
| | - Karla L Gage
- School of Biological Sciences, Southern Illinois University, Carbondale, Illinois, USA
- School of Agricultural Sciences, Southern Illinois University, Carbondale, Illinois, USA
| | - Joseph L Matthews
- School of Agricultural Sciences, Southern Illinois University, Carbondale, Illinois, USA
| | | | - David L Jordan
- Department of Crop and Soil Sciences, North Carolina State University, Raleigh, North Carolina, USA
| | - David R Shaw
- Department of Plant and Soil Sciences, Mississippi State University, Starkville, Mississippi, USA
| | - Stephen C Weller
- Department of Horticulture and Landscape Architecture, Purdue University, West Lafayette, Indiana, USA
| | - Robert G Wilson
- Panhandle Research, Extension and Education Center, University of Nebraska-Lincoln, Scottsbluff, Nebraska, USA
| | - Bryan G Young
- Department of Botany and Plant Pathology, Purdue University, West Lafayette, Indiana, USA
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10
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Du Q, Ren X, Ma X, Wang D, Song X, Hu H, Wu C, Shan Y, Ma Y, Ma Y. Impact of a glyphosate-based herbicide on the longevity, fertility, and transgenerational effects on Chrysopa pallens (Rambur) (Neuroptera: Chrysopidae). ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2024; 31:21845-21856. [PMID: 38400979 DOI: 10.1007/s11356-024-32601-w] [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: 12/08/2023] [Accepted: 02/19/2024] [Indexed: 02/26/2024]
Abstract
Glyphosate-based herbicides (GBHs) are common herbicide formulations used in the field and are increasingly used worldwide with the widespread cultivation of herbicide-tolerant genetically modified crops. As a result, the risk of arthropod exposure to GBH is increasing rapidly. Chrysopa pallens (Rambur) (Neuroptera: Chrysopidae) is a common predatory natural enemy in agroecosystems, which is exposed to GBH (Roundup®) while preying on pests. To identify and characterize the potential effects of GBH on C. pallens, the life tables of C. pallens larvae and adults fed with GBH were constructed. Moreover, the effects of GBH treatment on the expression of genes involved in insulin signalling in adults were analyzed using qRT-PCR. The results showed that GBH treatment altered the pupal period and preadult stage of C. pallens larvae. However, it did no effect on longevity, fecundity, and population parameters and two insulin receptor genes (InR1, InR2), a serine/threonine kinase (Akt), an extracellular-signal-regulated kinase (erk), and vitellogenin (Vg1) expression of C. pallens. Adults feeding on GBH significantly altered development, longevity, and differences in the mean generation time of the F0 generation. However, GBH feeding only minimally influenced the growth and population parameters of the F1 generation. In addition, InR1, InR2, erk, and Vg1 expression in the F0 generation were downregulated on the fifth day of feeding on GBH. Furthermore, the expression levels of InR1, InR2, Akt, erk, and Vg1 in C. pallens decreased with the increase of GBH concentration, although the expression levels returned to control levels on the tenth day. Overall, the consumption of the GBH by larvae and adults of C. pallens had minimal effect on the growth and population parameters of C. pallens. The findings of this study can provide a reference for elucidating the environmental risks of GBH, guiding the optimal use of glyphosate in agricultural practices in the future.
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Affiliation(s)
- Qiankun Du
- Zhengzhou Research Base, National Key Laboratory of Cotton Bio-Breeding and Integrated Utilization, Zhengzhou University, Zhengzhou, 450001, China
- National Key Laboratory of Cotton Bio-Breeding and Integrated Utilization, Institute of Cotton Research, Chinese Academy of Agricultural Sciences, Anyang, 455000, China
| | - Xiangliang Ren
- Zhengzhou Research Base, National Key Laboratory of Cotton Bio-Breeding and Integrated Utilization, Zhengzhou University, Zhengzhou, 450001, China
- National Key Laboratory of Cotton Bio-Breeding and Integrated Utilization, Institute of Cotton Research, Chinese Academy of Agricultural Sciences, Anyang, 455000, China
- Western Agricultural Research Center, Chinese Academy of Agricultural Sciences, Changji, 831100, China
| | - Xiaoyan Ma
- Zhengzhou Research Base, National Key Laboratory of Cotton Bio-Breeding and Integrated Utilization, Zhengzhou University, Zhengzhou, 450001, China
- National Key Laboratory of Cotton Bio-Breeding and Integrated Utilization, Institute of Cotton Research, Chinese Academy of Agricultural Sciences, Anyang, 455000, China
- Western Agricultural Research Center, Chinese Academy of Agricultural Sciences, Changji, 831100, China
| | - Dan Wang
- National Key Laboratory of Cotton Bio-Breeding and Integrated Utilization, Institute of Cotton Research, Chinese Academy of Agricultural Sciences, Anyang, 455000, China
| | - Xianpeng Song
- National Key Laboratory of Cotton Bio-Breeding and Integrated Utilization, Institute of Cotton Research, Chinese Academy of Agricultural Sciences, Anyang, 455000, China
| | - Hongyan Hu
- National Key Laboratory of Cotton Bio-Breeding and Integrated Utilization, Institute of Cotton Research, Chinese Academy of Agricultural Sciences, Anyang, 455000, China
| | - Changcai Wu
- National Key Laboratory of Cotton Bio-Breeding and Integrated Utilization, Institute of Cotton Research, Chinese Academy of Agricultural Sciences, Anyang, 455000, China
| | - Yongpan Shan
- National Key Laboratory of Cotton Bio-Breeding and Integrated Utilization, Institute of Cotton Research, Chinese Academy of Agricultural Sciences, Anyang, 455000, China
| | - Yajie Ma
- National Key Laboratory of Cotton Bio-Breeding and Integrated Utilization, Institute of Cotton Research, Chinese Academy of Agricultural Sciences, Anyang, 455000, China
| | - Yan Ma
- Zhengzhou Research Base, National Key Laboratory of Cotton Bio-Breeding and Integrated Utilization, Zhengzhou University, Zhengzhou, 450001, China.
- National Key Laboratory of Cotton Bio-Breeding and Integrated Utilization, Institute of Cotton Research, Chinese Academy of Agricultural Sciences, Anyang, 455000, China.
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11
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Xu R, Bao Y, Jiao F, Li M, Zhang X, Zhang F, Guo J. Unraveling the atomic mechanisms underlying glyphosate insensitivity in EPSPS: implications of distal mutations. J Biomol Struct Dyn 2024:1-12. [PMID: 38400730 DOI: 10.1080/07391102.2024.2318472] [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: 12/08/2023] [Accepted: 02/08/2024] [Indexed: 02/26/2024]
Abstract
5-enolpyruvyl shikimate-3-phosphate synthase (EPSPS), as an indispensable enzyme in the shikimate pathway, is the specific target of grasser killer glyphosate (GPJ). GPJ is a competitive inhibitor of phosphoenolpyruvate (PEP), which is the natural substrate of EPSPS. A novel Ls-EPSPS gene variant discovered from Liliaceae, named ELs-EPSPS, includes five distal mutations, E112V, D142N, T351S, D425G, and R496G, endowing high GPJ insensitivity. However, the implicit molecular mechanism of the enhanced tolerance/insensitivity of GPJ in ELs-EPSPS is not fully understood. Herein, we try to interpret the hidden molecular mechanism using computational methods. Computational results reveal the enhanced flexibility of apo EPSPS upon mutations. The enhanced affinity of the initial binding substrate shikimate-3-phosphate (S3P), and the higher probability of second ligands PEP/GPJ entering the pocket are observed in the ELs-EPSPS-S3P system. Docking and MD results further confirmed the decreased GPJ-induced EPSPS inhibition upon mutations. And, the alterations of K98 and R179 side-chain orientations upon mutations are detrimental to GPJ binding at the active site. Additionally, the oscillation of side chain K98, in charge of PEP location, improves the proximity effect for substrates in the dual-substrate systems upon mutations. Our results clarify that the enhanced GPJ tolerance of EPSPS is achieved from decreased competitive inhibition of GPJ at the atomic perspective, and this finding further contributes to the cultivation of EPSPS genes with higher GPJ tolerance/insensitivity and a mighty renovation for developing glyphosate-resistant crops.Communicated by Ramaswamy H. Sarma.
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Affiliation(s)
- Ran Xu
- Centre in Artificial Intelligence Driven Drug Discovery, Faculty of Applied Sciences, Macao Polytechnic University, Macao, China
- College of Life Sciences, Nanjing Agricultural University, Nanjing, China
| | - Yiqiong Bao
- College of Life Sciences, Nanjing Agricultural University, Nanjing, China
| | - Fangfang Jiao
- Centre in Artificial Intelligence Driven Drug Discovery, Faculty of Applied Sciences, Macao Polytechnic University, Macao, China
| | - Mengrong Li
- College of Life Sciences, Nanjing Agricultural University, Nanjing, China
| | - Xiaoxiao Zhang
- College of Life Sciences, Nanjing Agricultural University, Nanjing, China
| | - Feng Zhang
- College of Plant Protection, Nanjing Agricultural University, Nanjing, China
| | - Jingjing Guo
- Centre in Artificial Intelligence Driven Drug Discovery, Faculty of Applied Sciences, Macao Polytechnic University, Macao, China
- Engineering Research Centre of Applied Technology on Machine Translation and Artificial Intelligence, Macao Polytechnic University, Macao, China
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12
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Singh R, Shukla A, Kaur G, Girdhar M, Malik T, Mohan A. Systemic Analysis of Glyphosate Impact on Environment and Human Health. ACS OMEGA 2024; 9:6165-6183. [PMID: 38371781 PMCID: PMC10870391 DOI: 10.1021/acsomega.3c08080] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/15/2023] [Revised: 12/15/2023] [Accepted: 12/29/2023] [Indexed: 02/20/2024]
Abstract
With a growing global population, agricultural scientists are focusing on crop production management and the creation of new strategies for a higher agricultural output. However, the growth of undesirable plants besides the primary crop poses a significant challenge in agriculture, necessitating the massive application of herbicides to eradicate this problem. Several synthetic herbicides are widely utilized, with glyphosate emerging as a potential molecule for solving this emerging issue; however, it has several environmental and health consequences. Several weed species have evolved resistance to this herbicide, therefore lowering agricultural yield. The persistence of glyphosate residue in the environment, such as in water and soil systems, is due to the misuse of glyphosate in agricultural regions, which causes its percolation into groundwater via the vertical soil profile. As a result, it endangers many nontarget organisms existing in the natural environment, which comprises both soil and water. The current Review aims to provide a systemic analysis of glyphosate, its various effects on the environment, its subsequent impact on human health and animals, which will lead us toward a better understanding of the issues about herbicide usage and aid in managing it wisely, as in the near the future glyphosate market is aiming for a positive forecast until 2035.
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Affiliation(s)
- Reenu Singh
- School
of Bioengineering and Biosciences, Lovely
Professional University, Phagwara, Punjab 144411, India
| | - Akanksha Shukla
- School
of Bioengineering and Biosciences, Lovely
Professional University, Phagwara, Punjab 144411, India
| | - Gurdeep Kaur
- School
of Chemical Engineering and Physical Sciences, Lovely Professional University, Phagwara, Punjab 144411, India
| | - Madhuri Girdhar
- School
of Bioengineering and Biosciences, Lovely
Professional University, Phagwara, Punjab 144411, India
| | - Tabarak Malik
- Department
of Biomedical Sciences, Institute of Health, Jimma University, Jimma 00000, Ethiopia
| | - Anand Mohan
- School
of Bioengineering and Biosciences, Lovely
Professional University, Phagwara, Punjab 144411, India
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13
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Mazuryk J, Klepacka K, Kutner W, Sharma PS. Glyphosate: Impact on the microbiota-gut-brain axis and the immune-nervous system, and clinical cases of multiorgan toxicity. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2024; 271:115965. [PMID: 38244513 DOI: 10.1016/j.ecoenv.2024.115965] [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: 03/16/2023] [Revised: 09/25/2023] [Accepted: 01/06/2024] [Indexed: 01/22/2024]
Abstract
Glyphosate (GLP) and GLP-based herbicides (GBHs), such as polyethoxylated tallow amine-based GLP surfactants (GLP-SH), developed in the late 70', have become the most popular and controversial agrochemicals ever produced. Nowadays, GBHs have reached 350 million hectares of crops in over 140 countries, with an annual turnover of 5 billion and 11 billion USD in the U.S.A. and worldwide, respectively. Because of the highly efficient inhibitory activity of GLP targeted to the 5-enolpyruvylshikimate-3-phosphate synthase pathway, present in plants and several bacterial strains, the GLP-resistant crop-based genetic agricultural revolution has decreased famine and improved the costs and quality of living in developing countries. However, this progress has come at the cost of the 50-year GBH overuse, leading to environmental pollution, animal intoxication, bacterial resistance, and sustained occupational exposure of the herbicide farm and companies' workers. According to preclinical and clinical studies covered in the present review, poisoning with GLP, GLP-SH, and GBHs devastatingly affects gut microbiota and the microbiota-gut-brain (MGB) axis, leading to dysbiosis and gastrointestinal (GI) ailments, as well as immunosuppression and inappropriate immunostimulation, cholinergic neurotransmission dysregulation, neuroendocrinal system disarray, and neurodevelopmental and neurobehavioral alterations. Herein, we mainly focus on the contribution of gut microbiota (GM) to neurological impairments, e.g., stroke and neurodegenerative and neuropsychiatric disorders. The current review provides a comprehensive introduction to GLP's microbiological and neurochemical activities, including deviation of the intestinal Firmicutes-to-Bacteroidetes ratio, acetylcholinesterase inhibition, excitotoxicity, and mind-altering processes. Besides, it summarizes and critically discusses recent preclinical studies and clinical case reports concerning the harmful impacts of GBHs on the GI tract, MGB axis, and nervous system. Finally, an insightful comparison of toxic effects caused by GLP, GBH-SH, and GBHs is presented. To this end, we propose a first-to-date survey of clinical case reports on intoxications with these herbicides.
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Affiliation(s)
- Jarosław Mazuryk
- Department of Electrode Processes, Institute of Physical Chemistry, Polish Academy of Sciences, 01-224 Warsaw, Poland; Bio & Soft Matter, Institute of Condensed Matter and Nanosciences, Université catholique de Louvain, 1 Place Louis Pasteur, 1348 Louvain-la-Neuve, Belgium.
| | - Katarzyna Klepacka
- Functional Polymers Research Team, Institute of Physical Chemistry, Polish Academy of Sciences, 01-224 Warsaw, Poland; ENSEMBLE(3) sp. z o. o., 01-919 Warsaw, Poland
| | - Włodzimierz Kutner
- Department of Electrode Processes, Institute of Physical Chemistry, Polish Academy of Sciences, 01-224 Warsaw, Poland; Faculty of Mathematics and Natural Sciences. School of Sciences, Cardinal Stefan Wyszynski University in Warsaw, 01-938 Warsaw, Poland
| | - Piyush Sindhu Sharma
- Functional Polymers Research Team, Institute of Physical Chemistry, Polish Academy of Sciences, 01-224 Warsaw, Poland
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Duong STD, Jang CH. Detection of glyphosate residues in agricultural products using liquid-crystal-based sensor exploiting competitive binding of glyphosate and Cu 2+ at the aqueous/LC interface and capillary tube test strip. Colloids Surf B Biointerfaces 2024; 234:113726. [PMID: 38157765 DOI: 10.1016/j.colsurfb.2023.113726] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2023] [Revised: 12/10/2023] [Accepted: 12/22/2023] [Indexed: 01/03/2024]
Abstract
Glyphosate is a widely used herbicide that poses both health and environmental risks. In this study, we propose a liquid crystal (LC)-based assay for glyphosate detection that exploits the unique properties of LC materials. The nematic LC 4-cyano-4'-pentylbiphenyl (5CB) was employed as the sensing material and a self-assembled monolayer of octadecyltrichlorosilane (OTS) was used to modify glass substrates. The assay involved strong competition for coordination with Cu2+ for glyphosate, resulting in changes in the LC texture. By monitoring and analyzing the optical images of the LC film using polarizing microscopy, we detected and quantified the glyphosate concentrations. The proposed assay demonstrated high sensitivity and selectivity toward glyphosate in the detection range of 1-300 nM with a limit of detection of 0.26 nM. Moreover, the assay successfully applied to analyze glyphosate in spiked samples, including tap water, soil, and cabbage, and satisfactory recovery rates were achieved. Based on this detection principle, capillary tube test strips were developed for on-site applications. The detection thresholds of the test strips were controlled by varying the Cu2+ concentration. The developed LC-based assay is a rapid and reliable glyphosate detection method with potential applications in environmental monitoring and food safety.
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Affiliation(s)
- Song Thai Duong Duong
- Department of Chemistry, Gachon University, San 65, Bokjeong-Dong, Sujeong-Gu, Seongnam-City, Gyeonggi-Do 461-701, South Korea.
| | - Chang-Hyun Jang
- Department of Chemistry, Gachon University, San 65, Bokjeong-Dong, Sujeong-Gu, Seongnam-City, Gyeonggi-Do 461-701, South Korea.
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15
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Damalas CA, Koutroubas SD. Herbicide resistance evolution, fitness cost, and the fear of the superweeds. PLANT SCIENCE : AN INTERNATIONAL JOURNAL OF EXPERIMENTAL PLANT BIOLOGY 2024; 339:111934. [PMID: 38036222 DOI: 10.1016/j.plantsci.2023.111934] [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: 08/09/2023] [Accepted: 11/25/2023] [Indexed: 12/02/2023]
Abstract
Despite considerable differences in cropping systems around the globe, chemical weed control is a key tool in conventional agroecosystems, which has led to an increase in herbicide resistance. Although mutations causing resistance are thought to have an adaptation cost in resistant plants compared to the susceptible ones under herbicide-free conditions, such cost may not always express or will express under certain ecological conditions. To ensure that herbicides will keep going as viable instruments in agricultural production, strategies to minimize resistance are needed. Proactive or reactive strategies for weed control should utilize an overall integrated weed management approach by combining as many weed management practices as possible. The term 'superweed' was used initially to describe the phenomenon in which genetically engineered crops would become troublesome weeds and that the genes of interest would spread into related weeds, rendering them problematic, or into wild species, turning them into troublesome weeds. Contrary to the above definition, the use of this term in the literature has often been linked with herbicide resistance, mostly related to the cultivation of genetically engineered crops and the related increase in the use of glyphosate, which rapidly selected resistant weed populations. From a scientific point of view, weeds are better survivors than non-weedy species and cause crop problems because they have several unique traits, e.g., they are aggressive, adapt easily to different environments, produce many seeds, compete strongly with crops, disperse easily, are difficult to control, traits which occur whether weeds are herbicide-resistant or not. We propose that the term 'superweed' should be referred to weeds with resistant populations to several herbicides with diverse modes of action (MOAs).
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Affiliation(s)
- Christos A Damalas
- Department of Agricultural Development, Democritus University of Thrace, 68200 Orestiada, Greece.
| | - Spyridon D Koutroubas
- Department of Agricultural Development, Democritus University of Thrace, 68200 Orestiada, Greece
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16
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García Carriquiry I, Silva V, Raevel F, Harkes P, Osman R, Bentancur O, Fernandez G, Geissen V. Effects of mixtures of herbicides on nutrient cycling and plant support considering current agriculture practices. CHEMOSPHERE 2024; 349:140925. [PMID: 38086451 DOI: 10.1016/j.chemosphere.2023.140925] [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: 09/12/2023] [Revised: 12/05/2023] [Accepted: 12/07/2023] [Indexed: 12/19/2023]
Abstract
The use of mixtures of pesticides and consecutive pesticide applications challenge current regulations aimed at protecting ecosystem health due to unpredictable effects of complex and dynamic mixtures. In this study, we tested the ecotoxicological effects of mixtures of herbicides, applied following a real application scheme of soybean production on soil health in a mesocosm experiment. The experiment included two sequential applications; first, glyphosate + dicamba + clethodim, and 30 days later, flumioxazin + metolachlor. Commercial products were used at the recommended doses and at two other concentrations: half and double the recommended dose. Soybean plants were exposed to the herbicide-contaminated soil from the time of sowing to the beginning of pod formation. Half of the plants were harvested at the vegetative stage and the remaining plants at the reproductive stage to evaluate endpoints related to plant support and nutrient cycling. Plant biomass was significantly affected during the vegetative stage at the recommended and double the recommended dose, with the effects being mixture-dose dependent. Lower total and arbuscular colonization of mycorrhizas were also observed in double the recommended dose, and intermediate results were observed for the recommended dose. Nodule mass and phosphorous concentration in plants decreased with increasing herbicide doses. By the end of the experiment, nodule mass and total mycorrhizal colonization were low in the plants treated with double the recommended dose of herbicides. However, both endpoints reached similar values to the control at lower herbicide doses. Plant height and phenology were only lower at double the recommended dose during the experiment. The use of non-standard endpoints evidenced that important soil functions were transiently or permanently affected, while the realistic application scheme accounted for the impact of the management practice currently used. Pesticide risk assessment should therefore, incorporate both issues to effectively protect the ecosystems.
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Affiliation(s)
- I García Carriquiry
- Soil Physics & Land Management Group, Wageningen University & Research, Netherlands; CENUR Litoral Norte, Universidad de la República, Uruguay.
| | - V Silva
- Soil Physics & Land Management Group, Wageningen University & Research, Netherlands
| | - F Raevel
- Soil Physics & Land Management Group, Wageningen University & Research, Netherlands
| | - P Harkes
- Soil Physics & Land Management Group, Wageningen University & Research, Netherlands
| | - R Osman
- Soil Physics & Land Management Group, Wageningen University & Research, Netherlands
| | - O Bentancur
- Facultad de Agronomía, Universidad de la República, Uruguay
| | - G Fernandez
- Facultad de Agronomía, Universidad de la República, Uruguay
| | - V Geissen
- Soil Physics & Land Management Group, Wageningen University & Research, Netherlands
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17
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Tan H, Xing Q, Mo L, Wu C, Zhang X, He X, Liang Y, Hao R. Occurrence, multiphase partitioning, drivers, and ecological risks of current-use herbicides in a river basin dominated by rice-vegetable rotations in tropical China. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 908:168270. [PMID: 37918751 DOI: 10.1016/j.scitotenv.2023.168270] [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: 07/17/2023] [Revised: 10/29/2023] [Accepted: 10/30/2023] [Indexed: 11/04/2023]
Abstract
Rice-vegetable rotation practices prevail in subtropical and tropical agriculture worldwide, with applications of current-use herbicides (CUHs) vital for nontarget plant control. After application, CUHs migrate to environmental compartments, where the occurrence, fate, and ecological risks have not been well characterized. To further understand the occurrence and multiphase partitioning, as well as to evaluate potential drivers and mixture risks in environmental compartments, we analyzed 11 CUHs in 576 samples from 36 rice-vegetable rotations in Nandu River basin, Hainan, China. Samples included soil, water, suspended particulate matter, and sediment collected during both rice and vegetable planting periods. The CUH concentrations varied across environmental compartments, but with high levels of glyphosate and aminomethylphosphonic acid organophosphorus herbicides (OPHs) frequently detected, accounting for 82.3 % to 99.0 % in environmental compartments. Phenoxy acid (PAA) and chloroacetanilide (ANH) herbicides were detected at lower frequencies. Spatiotemporal variation was significantly different among OPHs, ANHs, and PAAs, with geographic and crop-related patterns most evident for CUHs rather than OPHs. Structural equation model, redundancy, and boosted regression tree analyses indicated environmental compartment properties (pH, organic matter, and Fe/Al oxides), crop type, and wet/dry climate were important drivers of spatiotemporal patterns. Fugacity ratios indicated multiphase partitioning and transport of CUHs differed in rice and vegetable planting periods. A new assessment framework based on species-sensitive distributions and environmental compartment weight index indicated unacceptable risks of CUHs (risk quotient >1 in >50 % of sites), with most risks from OPHs (10.5 % to 98.0 %) and butachlor, acetochlor, and 2,4-dichlorophenoxyacetic acid. Risk hot spots were identified as the soil, the central region, and the vegetable planting period, potentially threatening nontarget organisms (e.g., Lemna minor, Glomus intraradices, and Apis mellifera). This study provides a new risk assessment framework and demonstrates the domination of OPHs in CUH contamination and risks in the tropics, thus helping guide policymakers and stakeholders on herbicide management.
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Affiliation(s)
- Huadong Tan
- Environment and Plant Protection Institute, Chinese Academy of Tropical Agricultural Sciences, Haikou 571101, PR China; National Agricultural Experimental Station for Agricultural Environment, Danzhou 571737, PR China; Hainan Engineering Research Center for Non-point Source and Heavy Metal Pollution Control, Danzhou 571737, PR China
| | - Qiao Xing
- Hainan Research Academy of Environmental Sciences, Haikou 571126, PR China
| | - Ling Mo
- Hainan Research Academy of Environmental Sciences, Haikou 571126, PR China
| | - Chunyuan Wu
- Environment and Plant Protection Institute, Chinese Academy of Tropical Agricultural Sciences, Haikou 571101, PR China; National Agricultural Experimental Station for Agricultural Environment, Danzhou 571737, PR China; Hainan Engineering Research Center for Non-point Source and Heavy Metal Pollution Control, Danzhou 571737, PR China.
| | - Xiaoying Zhang
- Haikou Experimental Station, Chinese Academy of Tropical Agricultural Sciences, Haikou 571101, PR China
| | - Xiaoyu He
- Environment and Plant Protection Institute, Chinese Academy of Tropical Agricultural Sciences, Haikou 571101, PR China; Guizhou University, Guiyang 550025, PR China
| | - Yuefu Liang
- Environment and Plant Protection Institute, Chinese Academy of Tropical Agricultural Sciences, Haikou 571101, PR China; Huazhong Agricultural University, Wuhan 430070, PR China
| | - Rong Hao
- Huazhong Agricultural University, Wuhan 430070, PR China.
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18
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Rosales CA, Sheedy KL, Wasslen KV, Manthorpe JM, Smith JC. Trimethylation Enhancement Using Diazomethane (TrEnDi) Enables Enhanced Detection of Glufosinate and 3-(Methylphosphinico)propionic Acid from Complex Canola Samples. JOURNAL OF THE AMERICAN SOCIETY FOR MASS SPECTROMETRY 2024; 35:140-150. [PMID: 38127770 DOI: 10.1021/jasms.3c00376] [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: 12/23/2023]
Abstract
Over the past century, agriculture practices have transitioned from manual cultivation to the use of an array of chemical herbicides for weed control including phosphinothricin, or glufosinate (GLUF). Consequently, the potential for long-term residual GLUF exposure in the food chain has increased, highlighting the need for improved analytical strategies for its detection, as well as the detection of its main breakdown product 3-(methylphosphinico)propionic acid (MPPA). Chemical derivatization strategies have been developed to improve the detection of GLUF and MPPA via liquid chromatography tandem mass spectrometry analyses. Herein, we employ trimethylation enhancement using diazomethane (TrEnDi) for the first time as a means to confer analytical advantages via quantitatively derivatizing these analytes into permethylated GLUF ([GLUFTr]+) and MPPA ([MPPATr+H]+). Comparing [GLUFTr]+ and [MPPATr+H]+ to underivatized counterparts, TrEnDi yields 2.8-fold and 1.7-fold improvements in reversed-phase chromatographic retention, respectively, while MS-based sensitivity is enhanced 4.1-fold and 11.0-fold, respectively. Successful analyte derivatization (with >99% yields) was further demonstrated on a commercial herbicide solution imparting consistent analytical enhancements. To investigate the benefits of TrEnDi in a bona fide agricultural scenario, simple aqueous extractions from distinct parts of field-grown canola plants were performed to quantify GLUF and MPPA before and after TrEnDi derivatization. In their underivatized forms, GLUF and MPPA were undetectable in all field samples, whereas [GLUFTr]+ and [MPPATr+H]+ were readily quantifiable using the same analysis conditions. Our results demonstrate that TrEnDi continues to be a useful tool to enhance the analytical characteristics of organic molecules that are traditionally difficult to detect.
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Affiliation(s)
- Christian A Rosales
- Department of Chemistry, Carleton University, Ottawa, Ontario K1S 5B6, Canada
- Carleton Mass Spectrometry Centre, Carleton University, Ottawa, Ontario K1S 5B6, Canada
| | - Krysten L Sheedy
- Department of Chemistry, Carleton University, Ottawa, Ontario K1S 5B6, Canada
- Carleton Mass Spectrometry Centre, Carleton University, Ottawa, Ontario K1S 5B6, Canada
| | - Karl V Wasslen
- Department of Chemistry, Carleton University, Ottawa, Ontario K1S 5B6, Canada
- Carleton Mass Spectrometry Centre, Carleton University, Ottawa, Ontario K1S 5B6, Canada
| | - Jeffrey M Manthorpe
- Department of Chemistry, Carleton University, Ottawa, Ontario K1S 5B6, Canada
- Institute of Biochemistry, Carleton University, Ottawa, Ontario K1S 5B6, Canada
- Carleton Mass Spectrometry Centre, Carleton University, Ottawa, Ontario K1S 5B6, Canada
| | - Jeffrey C Smith
- Department of Chemistry, Carleton University, Ottawa, Ontario K1S 5B6, Canada
- Institute of Biochemistry, Carleton University, Ottawa, Ontario K1S 5B6, Canada
- Carleton Mass Spectrometry Centre, Carleton University, Ottawa, Ontario K1S 5B6, Canada
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19
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Ribeiro VP, Bajsa-Hirschel J, Tamang P, Meepagala K, Duke SO. Antifungal and Phytotoxic Activities of Isolated Compounds from Helietta parvifolia Stems. Molecules 2023; 28:7930. [PMID: 38067660 PMCID: PMC10708216 DOI: 10.3390/molecules28237930] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2023] [Revised: 11/03/2023] [Accepted: 11/27/2023] [Indexed: 12/18/2023] Open
Abstract
The identification of natural and environmentally friendly pesticides is a key area of interest for the agrochemical industry, with many potentially active compounds being sourced from numerous plant species. In this study, we report the bioassay-guided isolation and identification of phytotoxic and antifungal compounds from the ethyl acetate extract of Helietta parvifolia stems. We identified eight compounds, consisting of two coumarins and six alkaloids. Among these, a new alkaloid, 2-hydroxy-3,6,7-trimethoxyquinoline-4-carbaldehyde (6), was elucidated, along with seven known compounds. The phytotoxicity of purified compounds was evaluated, and chalepin (4) was active against Agrostis stolonifera at 1 mM with 50% inhibition of seed germination and it reduced Lemna pausicotata (duckweed) growth by 50% (IC50) at 168 μM. Additionally, we evaluated the antifungal activity against the fungal plant pathogen Colletotrichum fragariae using a thin-layer chromatography bioautography assay, which revealed that three isolated furoquinoline alkaloids (flindersiamine (3), kokusagenine (7), and maculine (8)) among the isolated compounds had the strongest inhibitory effects on the growth of C. fragariae at all tested concentrations. Our results indicate that these active natural compounds, i.e., (3), (4), (7), and (8), could be scaffolds for the production of more active pesticides with better physicochemical properties.
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Affiliation(s)
- Victor Pena Ribeiro
- Agricultural Research Service, Natural Products Utilization Research Unit, U.S. Department of Agriculture, University, MS 38677, USA; (V.P.R.); (J.B.-H.); (P.T.)
| | - Joanna Bajsa-Hirschel
- Agricultural Research Service, Natural Products Utilization Research Unit, U.S. Department of Agriculture, University, MS 38677, USA; (V.P.R.); (J.B.-H.); (P.T.)
| | - Prabin Tamang
- Agricultural Research Service, Natural Products Utilization Research Unit, U.S. Department of Agriculture, University, MS 38677, USA; (V.P.R.); (J.B.-H.); (P.T.)
| | - Kumudini Meepagala
- Agricultural Research Service, Natural Products Utilization Research Unit, U.S. Department of Agriculture, University, MS 38677, USA; (V.P.R.); (J.B.-H.); (P.T.)
| | - Stephen O. Duke
- National Center for Natural Products Research, University, MS 38677, USA;
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20
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Landau C, Bradley K, Burns E, Flessner M, Gage K, Hager A, Ikley J, Jha P, Jhala A, Johnson PO, Johnson W, Lancaster S, Legleiter T, Lingenfelter D, Loux M, Miller E, Norsworthy J, Owen M, Nolte S, Sarangi D, Sikkema P, Sprague C, VanGessel M, Werle R, Young B, Williams MM. The silver bullet that wasn't: Rapid agronomic weed adaptations to glyphosate in North America. PNAS NEXUS 2023; 2:pgad338. [PMID: 38059262 PMCID: PMC10697415 DOI: 10.1093/pnasnexus/pgad338] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/23/2023] [Accepted: 10/02/2023] [Indexed: 12/08/2023]
Abstract
The rapid adoption of glyphosate-resistant crops at the end of the 20th century caused a simplification of weed management that relied heavily on glyphosate for weed control. However, the effectiveness of glyphosate has diminished. A greater understanding of trends related to glyphosate use will shed new light on weed adaptation to a product that transformed global agriculture. Objectives were to (1) quantify the change in weed control efficacy from postemergence (POST) glyphosate use on troublesome weeds in corn and soybean and (2) determine the extent to which glyphosate preceded by a preemergence (PRE) improved the efficacy and consistency of weed control compared to glyphosate alone. Herbicide evaluation trials from 24 institutions across the United States of America and Canada from 1996 to 2021 were compiled into a single database. Two subsets were created; one with glyphosate applied POST, and the other with a PRE herbicide followed by glyphosate applied POST. Within each subset, mean and variance of control ratings for seven problem weed species were regressed over time for nine US states and one Canadian province. Mean control with POST glyphosate alone decreased over time while variability in control increased. Glyphosate preceded by a labeled PRE herbicide showed little change in mean control or variability in control over time. These results illustrate the rapid adaptation of agronomically important weed species to the paradigm-shifting product glyphosate. Including more diversity in weed management systems is essential to slowing weed adaptation and prolonging the usefulness of existing and future technologies.
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Affiliation(s)
- Christopher Landau
- Global Change and Photosynthesis Research Unit, USDA-ARS, Urbana, IL 61801, USA
| | - Kevin Bradley
- Division of Plant Sciences, University of Missouri, Columbia, MO 65211, USA
| | - Erin Burns
- Department of Plant, Soil and Microbial Sciences, Michigan State University, East Lansing, MI 48824, USA
| | - Michael Flessner
- School of Plant and Environmental Sciences, Virginia Tech, Blacksburg, VA 24061, USA
| | - Karla Gage
- School of Agricultural Sciences/School of Biological Sciences, Southern Illinois University Carbondale, Carbondale, IL 62901, USA
| | - Aaron Hager
- Department of Crop Sciences, University of Illinois, Urbana, IL 61801, USA
| | - Joseph Ikley
- Department of Plant Sciences, North Dakota State University, Fargo, ND 58108, USA
| | - Prashant Jha
- Department of Agronomy, Iowa State University, Ames, IA 50201, USA
| | - Amit Jhala
- Department of Agronomy and Horticulture, University of Nebraska-Lincoln, Lincoln, NE 68583, USA
| | - Paul O Johnson
- Agronomy, Horticulture, & Plant Science, South Dakota State University, Brookings, SD 57007, USA
| | - William Johnson
- Department of Botany and Plant Pathology, Purdue University, West Lafayette, IN 47907, USA
| | - Sarah Lancaster
- Department of Agronomy, Kansas State University, Manhattan, KS 66506, USA
| | - Travis Legleiter
- Department of Plant and Soil Sciences, University of Kentucky, Princeton, KY 42445, USA
| | - Dwight Lingenfelter
- Department of Plant Science, Penn State University, University Park, PA 16802, USA
| | - Mark Loux
- Department of Horticulture and Crop Science, Ohio State University, Columbus, OH 43210, USA
| | - Eric Miller
- School of Agricultural Sciences, Southern Illinois University Carbondale, Carbondale, IL 62901, USA
| | - Jason Norsworthy
- Department of Crop, Soil, and Environmental Sciences, University of Arkansas, Fayetteville, AR 72701, USA
| | - Micheal Owen
- Department of Agronomy, Iowa State University, Ames, IA 50201, USA
| | - Scott Nolte
- Department of Soil and Crop Sciences, Texas A&M University, College Station, TX 77840, USA
| | - Debalin Sarangi
- Department of Agronomy and Plant Genetics, University of Minnesota, St. Paul, MN 55108, USA
| | - Peter Sikkema
- Department of Plant Agriculture, University of Guelph Ridgetown Campus, Ridgetown, ON N0P 2C0, Canada
| | - Christy Sprague
- Department of Plant, Soil and Microbial Sciences, Michigan State University, East Lansing, MI 48824, USA
| | - Mark VanGessel
- Department of Plant and Soil Sciences, University of Delaware, Georgetown, DE 19947, USA
| | - Rodrigo Werle
- Department of Agronomy, University of Wisconsin-Madison, Madison, WI 53705, USA
| | - Bryan Young
- Department of Botany and Plant Pathology, Purdue University, West Lafayette, IN 47907, USA
| | - Martin M Williams
- Global Change and Photosynthesis Research Unit, USDA-ARS, Urbana, IL 61801, USA
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da Silva PR, Borges-Martins M, Oliveira GT. Impacts of isolated or mixed Roundup® Original DI and Boral® 500 SC herbicides on the survival and metamorphosis of Melanophryniscus admirabilis tadpoles. AQUATIC TOXICOLOGY (AMSTERDAM, NETHERLANDS) 2023; 264:106715. [PMID: 37820410 DOI: 10.1016/j.aquatox.2023.106715] [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: 09/02/2023] [Revised: 09/29/2023] [Accepted: 10/01/2023] [Indexed: 10/13/2023]
Abstract
The bufonid species Melanophryniscus admirabilis is restricted to a single location in the southern Atlantic Forest, Brazil. Although the site of occurrence of M. admirabilis is covered with native forest and it is not directly exposed to pesticides application, the area is surrounded by agricultural activity. Our objectives were to evaluate possible alterations in morphological parameters (body mass, snout-vent length, and body index), metamorphosis (time to reach Gosner stages 42, 46 and to complete metamorphosis), and survival of M. admirabilis exposed to isolated Roundup® Original DI (R1: 234 and R2: 2340 µg.L-1 of glyphosate) and Boral® 500 SC, (B1: 130 and B2: 980 µg.L-1 of sulfentrazone) or mixed (R1+B1, R2+B1, R1+B2, R2+B2). Spawns of M. admirabilis were collected in natural lakes in the municipality of Arvorezinha and taken to laboratory cultivation. After the tadpoles acquired free swimming, the animals were acclimated for five days and fed ad libitum. The aquariums were contaminated with herbicides on the sixth day of cultivation, and the animals stayed in these aquariums for four days. Afterwards, the tadpoles were transferred to aquariums with clean water and monitored until metamorphosis (Gosner stage 46), when they were weighed, measured (snout-cloacal length) and cryoeuthanized. We observed no alterations in morphological parameters; however, survival was reduced in exposed groups (mortality index: 71 % in R2 and 29-64 % in mixed groups), suggesting energy allocation for metamorphosis at the expense of survival. Boral did not alter metamorphosis time. Roundup isolated and mixed with Boral altered the timing of Gosner stages 42 and 46 and reduced metamorphosis time, suggesting endocrine disruption. Thus, monitoring the presence and limiting the use of these pesticides in the area where M. admirabilis occurs can be crucial for conservation strategies.
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Affiliation(s)
- Patrícia Rodrigues da Silva
- Conservation Physiology Laboratory, Morphological Sciences Department, Postgraduate Program in Ecology and Evolution of Biodiversity, School of Health Sciences and Life, Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS), Ipiranga ave. 6681 Building 12 C, Porto Alegre, Brazil
| | - Márcio Borges-Martins
- Herpetology Laboratory, Zoology Department, Postgraduate Program in Animal Biology, Biological Sciences Institute, Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre, Brazil
| | - Guendalina Turcato Oliveira
- Conservation Physiology Laboratory, Morphological Sciences Department, Postgraduate Program in Ecology and Evolution of Biodiversity, School of Health Sciences and Life, Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS), Ipiranga ave. 6681 Building 12 C, Porto Alegre, Brazil.
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González-Moscoso M, Meza-Figueroa D, Martínez-Villegas NV, Pedroza-Montero MR. GLYPHOSATE IMPACT on human health and the environment: Sustainable alternatives to replace it in Mexico. CHEMOSPHERE 2023; 340:139810. [PMID: 37598951 DOI: 10.1016/j.chemosphere.2023.139810] [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: 06/16/2023] [Revised: 08/10/2023] [Accepted: 08/11/2023] [Indexed: 08/22/2023]
Abstract
Glyphosate is a broad-spectrum, non-selective herbicide used to control weeds and protect agricultural crops, and it is classified as potentially carcinogenic by the International Agency for Research on Cancer. In Mexico, the use of pesticides is a common practice, including glyphosate. However, on December 31st, 2020, the Mexican government decreed the prohibition of this herbicide as of January 2024. In this review, we investigate the association between glyphosate and cancer risk and found that most of the studies focused using animals showing negative effects such as genotoxicity, cytotoxicity and neurotoxicity, some studies used cancer cell lines showing proliferative effects due to glyphosate exposure. To our knowledge, in Mexico, there are no scientific reports on the association of glyphosate with any type of cancer. In addition, we reviewed the toxicological effects of the herbicide glyphosate, and the specific case of the current situation of the use and environmental damage of this herbicide in Mexico. We found that few studies have been published on glyphosate, and that the largest number of publications are from the International Agency for Research on Cancer classification to date. Additionally, we provide data on glyphosate stimulation at low doses as a biostimulant in crops and analytical monitoring techniques for the detection of glyphosates in different matrices. Finally, we have tried to summarize the actions of the Mexican government to seek sustainable alternatives and replace the use of glyphosate, to obtain food free of this herbicide and take care of the health of the population and the environment.
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Affiliation(s)
- Magín González-Moscoso
- Departamento de Nanotecnología, Universidad Politécnica de Chiapas (UPChiapas), Carretera Tuxtla Gutierrez.-Portillo Zaragoza Km 21+500, Col. Las Brisas, Suchiapa, 29150, Chiapas, Mexico.
| | - Diana Meza-Figueroa
- Departamento de Geología, Universidad de Sonora, Rosales y Encinas, Hermosillo, 83000, Sonora, Mexico
| | | | - Martín Rafael Pedroza-Montero
- Departamento de Investigación en Física, Universidad de Sonora, Rosales y Encinas, Hermosillo, 83000, Sonora, Mexico
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23
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Hoyos V, Plaza G, Palma-Bautista C, Vázquez-García JG, Dominguez-Valenzuela JA, Alcántara-de la Cruz R, De Prado R. Divergence in Glyphosate Susceptibility between Steinchisma laxum Populations Involves a Pro106Ser Mutation. PLANTS (BASEL, SWITZERLAND) 2023; 12:3315. [PMID: 37765479 PMCID: PMC10534422 DOI: 10.3390/plants12183315] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/22/2023] [Revised: 09/11/2023] [Accepted: 09/18/2023] [Indexed: 09/29/2023]
Abstract
The characterization of the mechanisms conferring resistance to herbicides in weeds is essential for developing effective management programs. This study was focused on characterizing the resistance level and the main mechanisms that confer resistance to glyphosate in a resistant (R) Steinchisma laxum population collected in a Colombian rice field in 2020. The R population exhibited 11.2 times higher resistance compared to a susceptible (S) population. Non-target site resistance (NTSR) mechanisms that reduced absorption and impaired translocation and glyphosate metabolism were not involved in the resistance to glyphosate in the R population. Evaluating the target site resistance mechanisms by means of enzymatic activity assays and EPSPS (5-enolpyruvylshikimate-3-phosphate synthase) gene sequencing, the mutation Pro106Ser was found in R plants of S. laxum. These findings are crucial for managing the spread of S. laxum resistance in Colombia. To effectively control S. laxum in the future, it is imperative that farmers use herbicides with different mechanisms of action in addition to glyphosate and adopt Integrate Management Programs to control weeds in rice fields of the central valleys of Colombia.
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Affiliation(s)
- Veronica Hoyos
- Departamento de Ciencias Biológicas, Universidad Nacional de Colombia, Palmira 763533, Colombia
| | - Guido Plaza
- Departamento de Agronomía, Universidad Nacional de Colombia, Bogotá 111321, Colombia
| | - Candelario Palma-Bautista
- Departamento de Parasitología Agrícola, Universidad Autónoma Chapingo, Texcoco 56230, Mexico
- Agroforestry and Plant Biochemistry, Proteomics and Systems Biology, Department of Biochemistry and Molecular Biology, University of Cordoba, 14014 Cordoba, Spain
| | - Jose G. Vázquez-García
- Agroforestry and Plant Biochemistry, Proteomics and Systems Biology, Department of Biochemistry and Molecular Biology, University of Cordoba, 14014 Cordoba, Spain
| | | | | | - Rafael De Prado
- Agroforestry and Plant Biochemistry, Proteomics and Systems Biology, Department of Biochemistry and Molecular Biology, University of Cordoba, 14014 Cordoba, Spain
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24
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Brito-Bello AA, Lopez-Arredondo D. Bioactive Compounds with Pesticide Activities Derived from Aged Cultures of Green Microalgae. BIOLOGY 2023; 12:1149. [PMID: 37627033 PMCID: PMC10452921 DOI: 10.3390/biology12081149] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/17/2023] [Revised: 08/08/2023] [Accepted: 08/12/2023] [Indexed: 08/27/2023]
Abstract
The excessive use of synthetic pesticides has caused environmental problems and human health risks and increased the development of resistance in several organisms. Allelochemicals, secondary metabolites produced as part of the defense mechanisms in plants and microorganisms, are an attractive alternative to replace synthetic pesticides to remediate these problems. Microalgae are natural producers of a wide range of allelochemicals. Thus, they provide new opportunities to identify secondary metabolites with pesticide activities and an alternative approach to discover new modes of action and circumvent resistance. We screened 10 green microalgae strains belonging to the Chlorophyta phylum for their potential to inhibit the growth of photosynthetic and nonphotosynthetic organisms. Bioassays were established to assess microalgae extracts' effectiveness in controlling the growth of Chlorella sorokiniana, Arabidopsis thaliana, Amaranthus palmeri, and the model nematode Caenorhabditis elegans. All tested strains exhibited herbicidal, nematocidal, or algicidal activities. Importantly, methanol extracts of a Chlamydomonas strain effectively controlled the germination and growth of a glyphosate-resistant A. palmeri biotype. Likewise, some microalgae extracts effectively killed C. elegans L1 larvae. Comprehensive metabolic profiling using LC-MS of extracts with pesticide activities showed that the metabolite composition of Chlamydomonas, Chlorella, and Chloroidium extracts is diverse. Molecules such as fatty acids, isoquinoline alkaloids, aldehydes, and cinnamic acids were more abundant, suggesting their participation in the pesticide activities.
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Affiliation(s)
| | - Damar Lopez-Arredondo
- Institute of Genomics for Crop Abiotic Stress Tolerance, Department of Plant and Soil Science, Texas Tech University, Lubbock, TX 79409, USA
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25
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Patel A, Miles A, Strackhouse T, Cook L, Leng S, Patel S, Klinger K, Rudrabhatla S, Potlakayala SD. Methods of crop improvement and applications towards fortifying food security. Front Genome Ed 2023; 5:1171969. [PMID: 37484652 PMCID: PMC10361821 DOI: 10.3389/fgeed.2023.1171969] [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: 02/22/2023] [Accepted: 06/12/2023] [Indexed: 07/25/2023] Open
Abstract
Agriculture has supported human life from the beginning of civilization, despite a plethora of biotic (pests, pathogens) and abiotic (drought, cold) stressors being exerted on the global food demand. In the past 50 years, the enhanced understanding of cellular and molecular mechanisms in plants has led to novel innovations in biotechnology, resulting in the introduction of desired genes/traits through plant genetic engineering. Targeted genome editing technologies such as Zinc-Finger Nucleases (ZFNs), Transcription Activator-Like Effector Nucleases (TALENs), and Clustered Regularly Interspaced Short Palindromic Repeats (CRISPR) have emerged as powerful tools for crop improvement. This new CRISPR technology is proving to be an efficient and straightforward process with low cost. It possesses applicability across most plant species, targets multiple genes, and is being used to engineer plant metabolic pathways to create resistance to pathogens and abiotic stressors. These novel genome editing (GE) technologies are poised to meet the UN's sustainable development goals of "zero hunger" and "good human health and wellbeing." These technologies could be more efficient in developing transgenic crops and aid in speeding up the regulatory approvals and risk assessments conducted by the US Departments of Agriculture (USDA), Food and Drug Administration (FDA), and Environmental Protection Agency (EPA).
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Affiliation(s)
- Aayushi Patel
- Penn State Harrisburg, Middletown, PA, United States
| | - Andrew Miles
- Penn State University Park, State College, University Park, PA, United States
| | | | - Logan Cook
- Penn State Harrisburg, Middletown, PA, United States
| | - Sining Leng
- Shanghai United Cell Biotechnology Co Ltd, Shanghai, China
| | - Shrina Patel
- Penn State Harrisburg, Middletown, PA, United States
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Wu X, Song C, Zhu Y, Wang X, Zhang H, Hu D, Song R. Design and synthesis of novel PPO-inhibiting pyrimidinedione derivatives safed towards cotton. PESTICIDE BIOCHEMISTRY AND PHYSIOLOGY 2023; 193:105449. [PMID: 37248018 DOI: 10.1016/j.pestbp.2023.105449] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/09/2023] [Revised: 04/25/2023] [Accepted: 05/01/2023] [Indexed: 05/31/2023]
Abstract
Developing innovative and effective herbicides is of utmost importance since weed management has become a worldwide agricultural production concern, resulting in severe economic losses every year. In this study, a series of new pyrimidinedione compounds were developed via combination of pyrimidinediones with N-phenylacetamide moiety. The herbicidal activity test (37.5-150 g of ai/ha) indicated that most of the new derivatives exhibited excellent herbicidal activity against dicotyledonous weeds, but less against grasses. Among them, compound 34 was identified as the best postemergence herbicidal activities against six species of weeds (Amaranthus retrof lexus, AR; Abutilon theophrasti, AT; Veronica polita, VP; Echinochloa crusgalli, EC; Digitaria sanguinalis, DS; Setaria viridis, SV), which were comparable to the commercial control agent saflufenacil (≥90%). The protoporphyrinogen oxidase (PPO; EC. 1.3.3.4) activity experiment suggested that compound 34 could significantly reduce the PPO content in weeds, the relative expression levels of the PPO gene were verified by real-time quantitative polymerase chain reaction (RT-qPCR), and the results were consistent with the trend of the enzyme activity data. Molecular docking showed that compound 34 could occupy the PPO enzyme catalytic substrate pocket, which played an excellent inhibitory effect on the activity of receptor protein. Meanwhile, the tolerance of compound 34 to cotton was better than that of the commercial agent saflufenacil at 150 g of ai/ha. Thus, compound 34 exhibits the potential to be a new PPO herbicide for weed control in cotton fields. This study provided a basis for the subsequent structural modification and mechanism research of pyrimidinedione derivatives.
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Affiliation(s)
- Xiaoyan Wu
- National Key Laboratory of Green Pesticide, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Center for R&D of Fine Chemicals of Guizhou University, Guiyang 550025, PR China
| | - Changxiong Song
- National Key Laboratory of Green Pesticide, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Center for R&D of Fine Chemicals of Guizhou University, Guiyang 550025, PR China
| | - Yunying Zhu
- National Key Laboratory of Green Pesticide, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Center for R&D of Fine Chemicals of Guizhou University, Guiyang 550025, PR China
| | - Xiaoguo Wang
- National Key Laboratory of Green Pesticide, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Center for R&D of Fine Chemicals of Guizhou University, Guiyang 550025, PR China
| | - Hui Zhang
- National Key Laboratory of Green Pesticide, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Center for R&D of Fine Chemicals of Guizhou University, Guiyang 550025, PR China
| | - Deyu Hu
- National Key Laboratory of Green Pesticide, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Center for R&D of Fine Chemicals of Guizhou University, Guiyang 550025, PR China.
| | - Runjiang Song
- National Key Laboratory of Green Pesticide, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Center for R&D of Fine Chemicals of Guizhou University, Guiyang 550025, PR China.
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27
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Zambrano-Intriago LA, Daza-López EV, Fernández-Andrade A, Luque R, Amorim CG, Araújo AN, Rodríguez-Díaz JM, Montenegro MCBSM. Application of a novel hybrid MIL-53(Al)@rice husk for the adsorption of glyphosate in water: Characteristics and mechanism of the process. CHEMOSPHERE 2023; 327:138457. [PMID: 36948257 DOI: 10.1016/j.chemosphere.2023.138457] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/12/2023] [Revised: 02/24/2023] [Accepted: 03/17/2023] [Indexed: 06/18/2023]
Abstract
The development of new materials that have a high capacity to remove pollutants in water-based media is becoming increasingly important because of the serious contamination of water and the negative impact on biodiversity and public health. The presence of glyphosate in water, the most widely used herbicide worldwide, has triggered alerts owing to the collateral effects it may cause on human health. The main objective of the present study was to investigate the potential of the hybrid material MIL-53(Al)@RH for the adsorption of glyphosate in aqueous solution. The material was obtained following the methodology of MIL-53(Al) synthesis in the presence of hydrolyzed rice husk assisted by microwave. Batch adsorption experiments were carried out to evaluate the adsorbent dosage, pH0 solution effect, contact time, adsorbate concentration, and temperature effect. The results demonstrated that a maximum adsorption capacity of 296.95 mg g-1, at pH0 4 with a ratio of 0.04 g MIL-53(Al)@RH/50 mL of solution, was achieved in 30 min. The Avrami and pseudo-second order models appropriately described the adsorption kinetics and the equilibrium by Langmuir and Sips models. The enthalpy changes (ΔH°) determined propose an endothermic reaction governed by chemisorption, corroborating the kinetic and equilibrium settings. Hydrogen bonds, π*-π interactions, and complexation between the metal centers of MIL-53(Al) and the anionic groups of glyphosate were postulated to be involved as adsorption mechanisms. Finally, for practical application, MIL-53(Al)@RH was packed in a column for a fixed-bed test which revealed that the hybrid can remove glyphosate with an adsorption capacity of 76.304 mg L-1, utilizing 90% of the bed.
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Affiliation(s)
- Luis Angel Zambrano-Intriago
- LAQV-REQUIMTE/Departamento de Ciências Químicas, Faculdade de Farmácia - Universidade Do Porto, R. Jorge Viterbo Ferreira, 228, 4050-313, Porto, Portugal; Laboratorio de Análisis Químicos y Biotecnológicos, Instituto de Investigación, Universidad Técnica de Manabí, Portoviejo, 130105, Ecuador
| | - Erlinjka Valentina Daza-López
- Programa de Posgrado en Ingeniería Química, Instituto de Posgrado, Universidad Técnica de Manabí, S/N, Avenida Urbina y Che Guevara, Portoviejo, 130104, Ecuador
| | - Alex Fernández-Andrade
- Laboratorio de Análisis Químicos y Biotecnológicos, Instituto de Investigación, Universidad Técnica de Manabí, Portoviejo, 130105, Ecuador
| | - Rafael Luque
- Peoples Friendship University of Russia (RUDN University), 6 Miklukho Maklaya Str., 117198, Moscow, Russian Federation; Universidad ECOTEC, Km 13.5 Samborondón, Samborondón, EC0922302, Ecuador
| | - Célia G Amorim
- LAQV-REQUIMTE/Departamento de Ciências Químicas, Faculdade de Farmácia - Universidade Do Porto, R. Jorge Viterbo Ferreira, 228, 4050-313, Porto, Portugal
| | - Alberto N Araújo
- LAQV-REQUIMTE/Departamento de Ciências Químicas, Faculdade de Farmácia - Universidade Do Porto, R. Jorge Viterbo Ferreira, 228, 4050-313, Porto, Portugal
| | - Joan Manuel Rodríguez-Díaz
- Laboratorio de Análisis Químicos y Biotecnológicos, Instituto de Investigación, Universidad Técnica de Manabí, Portoviejo, 130105, Ecuador; Departamento de Procesos Químicos, Facultad de Ciencias Matemáticas, Físicas y Químicas, Universidad Técnica de Manabí, Portoviejo, 130105, Ecuador.
| | - Maria C B S M Montenegro
- LAQV-REQUIMTE/Departamento de Ciências Químicas, Faculdade de Farmácia - Universidade Do Porto, R. Jorge Viterbo Ferreira, 228, 4050-313, Porto, Portugal.
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Dominguez-Valenzuela JA, Palma-Bautista C, Vazquez-Garcia JG, Yanniccari M, Gigón R, Alcántara-de la Cruz R, De Prado R, Portugal J. Convergent Adaptation of Multiple Herbicide Resistance to Auxin Mimics and ALS- and EPSPS-Inhibitors in Brassica rapa from North and South America. PLANTS (BASEL, SWITZERLAND) 2023; 12:plants12112119. [PMID: 37299097 DOI: 10.3390/plants12112119] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/23/2023] [Revised: 05/23/2023] [Accepted: 05/23/2023] [Indexed: 06/12/2023]
Abstract
Herbicide-resistant weeds have been identified and recorded on every continent where croplands are available. Despite the diversity of weed communities, it is of interest how selection has led to the same consequences in distant regions. Brassica rapa is a widespread naturalized weed that is found throughout temperate North and South America, and it is a frequent weed among winter cereal crops in Argentina and in Mexico. Broadleaf weed control is based on glyphosate that is used prior to sowing and sulfonylureas or mimic auxin herbicides that are used once the weeds have already emerged. This study was aimed at determining whether a convergent phenotypic adaptation to multiple herbicides had occurred in B. rapa populations from Mexico and Argentina by comparing the herbicide sensitivity to inhibitors of the acetolactate synthase (ALS), 5-enolpyruvylshikimate-3-phosphate (EPSPS), and auxin mimics. Five B. rapa populations were analyzed from seeds collected in wheat fields in Argentina (Ar1 and Ar2) and barley fields in Mexico (Mx1, Mx2 and MxS). Mx1, Mx2, and Ar1 populations presented multiple resistance to ALS- and EPSPS-inhibitors and to auxin mimics (2,4-D, MCPA, and fluroxypyr), while the Ar2 population showed resistance only to ALS-inhibitors and glyphosate. Resistance factors ranged from 947 to 4069 for tribenuron-methyl, from 1.5 to 9.4 for 2,4-D, and from 2.7 to 42 for glyphosate. These were consistent with ALS activity, ethylene production, and shikimate accumulation analyses in response to tribenuron-methyl, 2,4-D, and glyphosate, respectively. These results fully support the evolution of the multiple- and cross-herbicide resistance to glyphosate, ALS-inhibitors, and auxinic herbicides in B. rapa populations from Mexico and Argentina.
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Affiliation(s)
| | - Candelario Palma-Bautista
- Department Agroforestry, Biochemistry and Molecular Biology, University of Cordoba, 14014 Cordoba, Spain
| | - José G Vazquez-Garcia
- Department Agroforestry, Biochemistry and Molecular Biology, University of Cordoba, 14014 Cordoba, Spain
| | - Marcos Yanniccari
- Chacra Experimental Integrada Barrow (MDA-INTA), National Scientific and Technical Research Council (CONICET), Faculty of Agronomy, National University of La Pampa, Santa Rosa L6300, Argentina
| | - Ramón Gigón
- Private Consultant in Weed Control, Buenos Aires C1033, Argentina
| | | | - Rafael De Prado
- Department Agroforestry, Biochemistry and Molecular Biology, University of Cordoba, 14014 Cordoba, Spain
| | - João Portugal
- Biosciences Department, Polytechnic Institute of Beja, 7800-000 Beja, Portugal
- VALORIZA-Research Centre for Endogenous Resource Valorization, Polytechnic Institute of Portalegre, 7300-555 Portalegre, Portugal
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Spangenberg JE, Zufferey V. Soil management affects carbon and nitrogen concentrations and stable isotope ratios in vine products. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 873:162410. [PMID: 36842594 DOI: 10.1016/j.scitotenv.2023.162410] [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: 10/25/2022] [Revised: 02/13/2023] [Accepted: 02/18/2023] [Indexed: 06/18/2023]
Abstract
Weeds reduce vineyard productivity and affect grape quality by competing with grapevines (Vitis vinifera L.) for water and nutrients. The increased banning of herbicides has prompted the evaluation of alternative soil management strategies. Cover cropping seems to be the best alternative for weed management. However, it may impact vine growth, grape yield, and quality. Quantitative studies on these changes are scarce. Our study aimed to investigate the combined effect of grass cover and water availability on vines of three cultivars, the white Chasselas and Petite Arvine and the red Pinot noir field-grown under identical climatic and pedological conditions and grafted onto the same rootstock. Soil management and irrigation experiments were performed during the 2020-2021 seasons. Two extreme soil management practices were established in the vineyard, based on 100 % bare soil (BS) by the application of herbicides with glufosinate or glyphosate as active ingredients and 100 % grass-covered soil (GS) by cover cropping with a mixture of plant species. Two water statuses were imposed by drip irrigation (DI) and no irrigation (NI). The level of vine-weed competition for water and nitrogen (N) was assessed in the vine, must, and wine solid residues (WSRs) by comparing measurements, i.e., the yeast assimilable N content, C/NWSR, carbon and N isotope ratios (δ13Cgrape-sugars, δ13CWSR, and δ15NWSR) among the different treatments (BS-DI, BS-NI, GS-DI, GS-NI). The increase in the δ13Cgrape-sugars and δ13CWSR values with increasing plant water deficit mimicked the observations in irrigation experiments on BS. The NWSR content and δ15NWSR values decreased with water stress and much more strongly in vines on GS. The dramatic N deficit in rainfed vines on GS could be alleviated with irrigation. The present study provides insights from chemical and stable isotope analyses into the potential impact of cover cropping in vineyards in the context of the banning of herbicides in a time of global water scarcity due to climate change.
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Affiliation(s)
- Jorge E Spangenberg
- Institute of Earth Surface Dynamics (IDYST), University of Lausanne, CH-1015 Lausanne, Switzerland.
| | - Vivian Zufferey
- Research Center of Viticulture, Agroscope, CH-1009 Pully, Switzerland
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Zhang W, Chen WJ, Chen SF, Lei Q, Li J, Bhatt P, Mishra S, Chen S. Cellular Response and Molecular Mechanism of Glyphosate Degradation by Chryseobacterium sp. Y16C. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2023; 71:6650-6661. [PMID: 37084257 DOI: 10.1021/acs.jafc.2c07301] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/03/2023]
Abstract
Glyphosate is one of the most widely used herbicides worldwide. Unfortunately, the continuous use of glyphosate has resulted in serious environmental contamination and raised public concern about its impact on human health. In our previous study, Chryseobacterium sp. Y16C was isolated and characterized as an efficient degrader that can completely degrade glyphosate. However, the biochemical and molecular mechanisms underlying its glyphosate biodegradation ability remain unclear. In this study, the physiological response of Y16C to glyphosate stimulation was characterized at the cellular level. The results indicated that, in the process of glyphosate degradation, Y16C induced a series of physiological responses in the membrane potential, reactive oxygen species levels, and apoptosis. The antioxidant system of Y16C was activated to alleviate the oxidative damage caused by glyphosate. Furthermore, a novel gene, goW, was expressed in response to glyphosate. The gene product, GOW, is an enzyme that catalyzes glyphosate degradation, with putative structural similarities to glycine oxidase. GOW encodes 508 amino acids, with an isoelectric point of 5.33 and a molecular weight of 57.2 kDa, which indicates that it is a glycine oxidase. GOW displays maximum enzyme activity at 30 °C and pH 7.0. Additionally, most of the metal ions exhibited little influence on the enzyme activity except for Cu2+. Finally, with glyphosate as the substrate, the catalytic efficiency of GOW was higher than that of glycine, although opposite results were observed for the affinity. Taken together, the current study provides new insights to deeply understand and reveal the mechanisms of glyphosate degradation in bacteria.
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Affiliation(s)
- Wenping 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, 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
| | - 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, College of Plant Protection, South China Agricultural University, Guangzhou 510642, China
| | - Shao-Fang 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, College of Plant Protection, South China Agricultural University, Guangzhou 510642, China
| | - Qiqi Lei
- 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, College of Plant Protection, South China Agricultural University, 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, College of Plant Protection, South China Agricultural University, Guangzhou 510642, China
| | - Pankaj Bhatt
- Department of Agricultural & Biological Engineering, Purdue University, West Lafayette 47906, United States
| | - Sandhya Mishra
- Environmental Technologies Division, CSIR-National Botanical Research Institute, Rana Pratap Marg, Lucknow 226001, India
| | - 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, College of Plant Protection, South China Agricultural University, Guangzhou 510642, China
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31
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Hickman DT, Comont D, Rasmussen A, Birkett MA. Novel and holistic approaches are required to realize allelopathic potential for weed management. Ecol Evol 2023; 13:e10018. [PMID: 37091561 PMCID: PMC10121234 DOI: 10.1002/ece3.10018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2023] [Revised: 03/20/2023] [Accepted: 04/04/2023] [Indexed: 04/25/2023] Open
Abstract
Allelopathy, that is, plant-plant inhibition via the release of secondary metabolites into the environment, has potential for the management of weeds by circumventing herbicide resistance. However, mechanisms underpinning allelopathy are notoriously difficult to elucidate, hindering real-world application either in the form of commercial bioherbicides or allelopathic crops. Such limited application is exemplified by evidence of limited knowledge of the potential benefits of allelopathy among end users. Here, we examine potential applications of this phenomenon, paying attention to novel approaches and influential factors requiring greater consideration, with the intention of improving the reputation and uptake of allelopathy. Avenues to facilitate more effective allelochemical discovery are also considered, with a view to stimulating the identification of new compounds and allelopathic species. Synthesis and Applications: We conclude that tackling increasing weed pressure on agricultural productivity would benefit from greater integration of the phenomenon of allelopathy, which in turn would be greatly served by a multi-disciplinary and exhaustive approach, not just through more effective isolation of the interactions involved, but also through greater consideration of factors which may influence them in the field, facilitating optimization of their benefits for weed management.
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Affiliation(s)
- Darwin T. Hickman
- Protecting Crops and the EnvironmentRothamsted ResearchHarpendenUK
- School of BiosciencesUniversity of NottinghamSutton BoningtonUK
| | - David Comont
- Protecting Crops and the EnvironmentRothamsted ResearchHarpendenUK
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Palma-Bautista C, Belluccini P, Vázquez-García JG, Alcántara-de la Cruz R, Barro F, Portugal J, De Prado R. Target-site and non-target-site resistance mechanisms confer multiple resistance to glyphosate and 2,4-D in Carduus acanthoides. PESTICIDE BIOCHEMISTRY AND PHYSIOLOGY 2023; 191:105371. [PMID: 36963940 DOI: 10.1016/j.pestbp.2023.105371] [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: 12/19/2022] [Revised: 02/09/2023] [Accepted: 02/11/2023] [Indexed: 06/18/2023]
Abstract
Carduus acanthoides L. is mainly a range-land weed, but in the 2010s has begun to invade GM crop production systems in Córdoba (Argentina), where glyphosate and 2,4-D have been commonly applied. In 2020, C. acanthoides was found with multiple resistance to these two herbicides. In this study, the mechanisms that confer multiple resistance to glyphosate and 2,4-D, were characterized in one resistant (R) population of C. acanthoides in comparison to a susceptible (S) population. No differences in 14C-herbicide absorption and translocation were observed between R and S populations. In addition, 14C-glyphosate was well translocated to the shoots (∼30%) and roots (∼16%) in both R and S plants, while most of 14C-2,4-D remained restricted in the treated leaf. Glyphosate metabolism did not contribute to resistance of the R population; however, as corroborated by malathion pretreatment, the mechanism of resistance to 2,4-D was enhanced metabolism (63% of the herbicide) mediated by cytochrome P450 (Cyt-P450). No differences were found in baseline EPSPS activity, copy number, and/or gene expression between the R and S populations, but a Pro-106-Ser mutation in EPSPS was present in the R population. Multiple resistances in the R population of C. acanthoides from Argentina were governed by target site resistance (a Pro-106 mutation for glyphosate) and non-target site resistance (Cyt-P450-based metabolic resistance for 2,4-D) mechanisms. This is the first case of resistance to glyphosate and 2,4-D confirmed for this weed in the world.
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Affiliation(s)
- Candelario Palma-Bautista
- Department Agroforestry, Biochemistry and Molecular Biology, University of Cordoba, Córdoba 14071, Spain
| | - Pablo Belluccini
- INTA, Marcos Juárez, Provincial Route 12, Marcos Juarez, Cordoba 2580, Argentina
| | - José G Vázquez-García
- Department Agroforestry, Biochemistry and Molecular Biology, University of Cordoba, Córdoba 14071, Spain
| | - Ricardo Alcántara-de la Cruz
- Centro de Ciências da Natureza, Campus Lagoa do Sino, Universidade Federal de São Carlos, Buri 18290-000, Brazil.
| | - Francisco Barro
- Institute for Sustainable Agriculture, CSIC, Córdoba 14080, Spain
| | - João Portugal
- Biosciences Department, Polytechnic Institute of Beja, Beja 7800-295, Portugal; VALORIZA-Research Centre for Endogenous Resource Valorization, Polytechnic Institute of Portalegre, Portalegre 7300-555, Portugal
| | - Rafael De Prado
- Department Agroforestry, Biochemistry and Molecular Biology, University of Cordoba, Córdoba 14071, Spain
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Leite NA, Redaelli LR, de Assis LS, Mendes SM, da Silva AF. The role of glyphosate-resistant weeds and starvation on biological, reproductive, and preference parameters of Chrysodeixis includens (Lepidoptera: Noctuidae). BULLETIN OF ENTOMOLOGICAL RESEARCH 2023; 113:220-229. [PMID: 36258270 DOI: 10.1017/s0007485322000487] [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: 06/16/2023]
Abstract
Glyphosate-resistant weeds are difficult to manage and can serve as hosts for pests that threaten cultivated crops. Chrysodeixis includens (Walker) (Lepidoptera: Noctuidae) is one of the main polyphagous pests of soybean in Brazil that can benefit from weeds' presence during season and off-season. Despite its pest status, little is known about C. includens survival and development on alternative hosts, including those resistant to glyphosate. Therefore, we assessed the biology, reproduction, preference, and survival at different feeding periods of C. includens on seven glyphosate-resistant weeds (Sumatran fleabane, Italian ryegrass, sourgrass, goosegrass, smooth pigweed, wild poinsettia, hairy beggarticks) commonly found in Brazilian agroecosystems, under laboratory conditions. Our results showed that C. includens survival and reproduction were similar on soybean and wild poinsettia. Survival and reproduction were lower on smooth pigweed and hairy beggarticks. Also, these plants prolonged the larval stage. Larvae did not pupate when fed on sourgrass, goosegrass, Italian ryegrass, and Sumatran fleabane. However, on Sumatran fleabane their biomass was higher. The mean generation time was lower on wild poinsettia. This weed was preferred to soybean. An antifeeding factor was observed on Sumatran fleabane. Larvae fed for 11 days on soybean, wild poinsettia and smooth pigweed developed into pupae. In agricultural systems, farmers must pay attention to the management of these weeds, especially wild poinsettia, smooth pigweed, and hairy beggarticks, to interrupt the cycle of this pest, since these plants can serve as main sources of infestation for the soybean crop.
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Affiliation(s)
- Natália Alves Leite
- Crop Protection Department, Federal University of Rio Grande do Sul, Bento Gonçalves Av., 7712, 91540000, Porto Alegre, Rio Grande do Sul, Brazil
| | - Luiza Rodrigues Redaelli
- Crop Protection Department, Federal University of Rio Grande do Sul, Bento Gonçalves Av., 7712, 91540000, Porto Alegre, Rio Grande do Sul, Brazil
| | - Larissa Souza de Assis
- Crop Protection Department, Federal University of Rio Grande do Sul, Bento Gonçalves Av., 7712, 91540000, Porto Alegre, Rio Grande do Sul, Brazil
| | - Simone Martins Mendes
- Department of Entomology, National Research Center of Maize and Sorghum (Embrapa Milho & Sorgo), Rodovia MG 242, Km 45, P.O. Box 285, Sete Lagoas, Minas Gerais, Brazil
| | - Alexandre Ferreira da Silva
- Department of Agriculture Weeds, National Research Center of Maize and Sorghum (Embrapa Milho & Sorgo), Rodovia MG 242, Km 45, P.O. Box 285, Sete Lagoas, Minas Gerais, Brazil
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Sesin V, Judy JD, Kapustka L, Opeolu B, Ottinger MA, Bertsch PM, Wang Y, Lazorchak J, Smythe TA, Stahl RG. The Importance of Fostering and Funding Scientific Research, and its Relevance to Environmental Toxicology and Chemistry. ENVIRONMENTAL TOXICOLOGY AND CHEMISTRY 2023; 42:581-593. [PMID: 36524856 PMCID: PMC10203974 DOI: 10.1002/etc.5542] [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: 09/12/2022] [Revised: 11/10/2022] [Accepted: 12/12/2022] [Indexed: 05/25/2023]
Abstract
What do environmental contaminants and climate change have in common with the virus SARS-CoV-2 and the disease COVID-19? We argue that one common element is the wealth of basic and applied scientific research that provides the knowledge and tools essential in developing effective programs for addressing threats to humans and social-ecological systems. Research on various chemicals, including dichlorodiphenyltrichloroethane and per- and polyfluoroalkyl substances, resulted in regulatory action to protect environmental and human health. Moreover, decades of research on coronaviruses, mRNA, and recently SARS-CoV-2 enabled the rapid development of vaccines to fight the COVID-19 pandemic. In the present study, we explore the common elements of basic and applied scientific research breakthroughs that link chemicals, climate change, and SARS-CoV-2/COVID-19 and describe how scientific information was applied for protecting human health and, more broadly, socio-ecological systems. We also offer a cautionary note on the misuse and mistrust of science that is not new in human history, but unfortunately is surging in modern times. Our goal was to illustrate the critical role of scientific research to society, and we argue that research must be intentionally fostered, better funded, and applied appropriately. To that end, we offer evidence that supports the importance of investing in scientific research and, where needed, ways to counter the spread of misinformation and disinformation that undermines legitimate discourse. Environ Toxicol Chem 2023;42:581-593. © 2022 SETAC.
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Affiliation(s)
- Verena Sesin
- Environmental and Life Sciences, Trent University, Peterborough, Ontario, Canada
| | - Jonathan D Judy
- Soil and Water Sciences Department, University of Florida, Gainesville, Florida, United States
| | | | - Beatrice Opeolu
- Environmental Chemistry and Toxicology Research Group, Cape Peninsula University of Technology, Cape Town, South Africa
| | - Mary A Ottinger
- Department of Biology and Biochemistry, University of Houston, Houston, Texas, United States
| | - Paul M Bertsch
- CSIRO Land and Water, Ecosciences Precinct, 41 Boggo Road, Brisbane, Qld, Australia
| | - Ying Wang
- Lawrence Berkeley National Laboratory, Berkeley, California, United States
| | - James Lazorchak
- US Environmental Protection Agency, Cincinnati, Ohio, United States
| | - Tristan A Smythe
- Department of Chemistry, Carleton University, Ottawa, Ontario, Canada
| | - Ralph G Stahl
- DuPont Company (Retired), Wilmington, Delaware, United States
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35
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Yanniccari M, Palma-Bautista C, Vázquez-García JG, Gigón R, Mallory-Smith CA, De Prado R. Constitutive overexpression of EPSPS by gene duplication is involved in glyphosate resistance in Salsola tragus. PEST MANAGEMENT SCIENCE 2023; 79:1062-1068. [PMID: 36327342 DOI: 10.1002/ps.7272] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/23/2022] [Revised: 10/28/2022] [Accepted: 11/03/2022] [Indexed: 06/16/2023]
Abstract
BACKGROUND Glyphosate-resistant Salsola tragus accessions have been identified in the USA and Argentina; however, the mechanisms of glyphosate resistance have not been elucidated. The goal of this study was to determine the mechanism/s of glyphosate resistance involved in two S. tragus populations (R1 and R2) from Argentina. RESULTS Both glyphosate-resistant populations had a six-fold lower sensitivity to glyphosate than the S population (i.e. resistance index). No evidence of differential absorption, translocation or metabolism of glyphosate was found in the R1 and R2 populations compared to a susceptible population (S). No 5-enolpyruvylshikimate-3-phosphate synthase (EPSPS) mutations were detected, but S. tragus R1 and R2 plants had ≈14-fold higher EPSPS gene relative copy number compared to the S counterpart. In R1 and R2, EPSPS duplication entailed a greater constitutive EPSPS transcript abundance by approximately seven-fold and a basal EPSPS activity approximately three-fold higher than the S population. CONCLUSION The current study reports EPSPS gene duplication for the first time as a mechanism of glyphosate resistance in S. tragus populations. The increase of glyphosate dose needed to kill R1 and R2 plants was linked to the EPSPS transcript abundance and level of EPSPS activity. This evidence supports the convergent evolution of the overexpression of the EPSPS gene in several Chenopodiaceae/Amaranthaceae species adapted to drought environments and the role of gene duplication as an adaptive advantage for plants to withstand stress. © 2022 Society of Chemical Industry.
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Affiliation(s)
- Marcos Yanniccari
- Chacra Experimental Integrada Barrow (MDA-INTA), National Scientific and Technical Research Council (CONICET), Faculty of Agronomy, National University of La Pampa, La Pampa, Argentina
| | - Candelario Palma-Bautista
- Department of Agroforestry, Plant Biochemistry and Molecular Biology, University of Cordoba, Cordoba, Spain
| | | | - Ramón Gigón
- Private Consultant in Weed Control, Tres Arroyos, Argentina
| | | | - Rafael De Prado
- Department of Agroforestry, Plant Biochemistry and Molecular Biology, University of Cordoba, Cordoba, Spain
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Sandhu PK, Leonard E, Nandula V, Tharayil N. Global Metabolome of Palmer Amaranth ( Amaranthus palmeri) Populations Highlights the Specificity and Inducibility of Phytochemical Responses to Abiotic Stress. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2023; 71:3518-3530. [PMID: 36780332 DOI: 10.1021/acs.jafc.2c07162] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
Commonalities in adaptive responses to abiotic stressors could contribute to the development of cross-resistance in weeds. The degree to which herbicide-induced changes in weeds parallel those induced by other abiotic stress remains unknown. We investigated the specificity of metabolic perturbations induced by glyphosate and drought across three glyphosate-resistant (GR) and two glyphosate-susceptible (GS) biotypes of Palmer amaranth (Amaranthus palmeri) using global metabolomics approaches. Compared to GS-biotypes, in the absence of stress, the GR-biotypes had a higher abundance of primary metabolites, including sugars, nonaromatic amino acids, and organic acids. However, despite having a higher 5-enolpyruvylshikimate-3-phosphate synthase (EPSPS) gene copy number that could upregulate the phenylpropanoid metabolism, the nonstressed GR-biotypes were less abundant in specialized (secondary) metabolites. Under glyphosate stress, 80% of metabolites, including shikimate, that accumulated in GS-biotypes also increased in the GR-biotypes. However, glyphosate triggered the preferential accumulation of glycosides of dihydroxylated and methoxylated flavanols with higher antioxidant potential, and ferulic acid derivatives, specifically in GR-biotypes. The disruption of the shikimate pathway and the accumulation of phenylpropanoids upon glyphosate exposure suggest that the stress response of GR-biotypes could be partly induced. This differential response was less evident in other phytochemical classes and under drought, highlighting that the phytochemical responses are stress-specific rather than biotype-specific.
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Affiliation(s)
- Pawanjit Kaur Sandhu
- Department of Plant and Environmental Sciences, Clemson University, Clemson, South Carolina 29634, United States
| | - Elizabeth Leonard
- Department of Plant and Environmental Sciences, Clemson University, Clemson, South Carolina 29634, United States
| | - Vijay Nandula
- United States Department of Agriculture, National Institute of Food and Agriculture, Kansas City, Missouri 64105, United States
| | - Nishanth Tharayil
- Department of Plant and Environmental Sciences, Clemson University, Clemson, South Carolina 29634, United States
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Obeid G, Moraes GO, Penna TC, Schenberg LA, Ducati LC, Correra TC. Solvation effects on glyphosate protonation and deprotonation states evaluated by mass spectrometry and explicit solvation simulations. J Chem Phys 2023; 158:054306. [PMID: 36754805 DOI: 10.1063/5.0134003] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023] Open
Abstract
Glyphosate is a widely used herbicide, and its protonation and deprotonation sites are fundamental to understanding its properties. In this work, the sodiated, protonated, and deprotonated glyphosate were evaluated in the gas phase by infrared multiple photon dissociation spectroscopy to determine the exact nature of these coordination, protonation, and deprotonation states in the gas phase. In this context, Natural Bond Orbital analyses were carried out to unravel interactions that govern glyphosate (de)protonation states in the gas phase. The solvent effect on the protonation/deprotonation equilibria was also investigated by implicit (Solvation Model Based on Density and polarizable continuum models) and explicit solvation models (Monte Carlo and Molecular Dynamics simulations). These results show that glyphosate is protonated in the phosphonate group in the gas phase because of the strong hydrogen bond between the carboxylic oxygen (O7) and the protonated phosphonate group (O8-H19), while the most stable species in water is protonated at the amino group because of the preferential interaction of the NH2 + group and the solvent water molecules. Similarly, deprotonated glyphosate [Glyp-H]- was shown to be deprotonated at the phosphonate group in the gas phase but not in solution, also because of the preferential solvation of the NH2 + group present in the other deprotomers. Therefore, these results show that the stabilization of the protonated amino group by the solvent molecules is the governing factor of the (de)protonation equilibrium of glyphosate in water.
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Affiliation(s)
- Guilherme Obeid
- Department of Fundamental Chemistry, Institute of Chemistry-University of São Paulo, Av. Prof. Lineu Prestes, 748, Cidade Universitária, São Paulo, SP, Brazil
| | - Gustavo O Moraes
- Department of Fundamental Chemistry, Institute of Chemistry-University of São Paulo, Av. Prof. Lineu Prestes, 748, Cidade Universitária, São Paulo, SP, Brazil
| | - Tatiana C Penna
- Department of Fundamental Chemistry, Institute of Chemistry-University of São Paulo, Av. Prof. Lineu Prestes, 748, Cidade Universitária, São Paulo, SP, Brazil
| | - Leonardo A Schenberg
- Department of Fundamental Chemistry, Institute of Chemistry-University of São Paulo, Av. Prof. Lineu Prestes, 748, Cidade Universitária, São Paulo, SP, Brazil
| | - Lucas C Ducati
- Department of Fundamental Chemistry, Institute of Chemistry-University of São Paulo, Av. Prof. Lineu Prestes, 748, Cidade Universitária, São Paulo, SP, Brazil
| | - Thiago C Correra
- Department of Fundamental Chemistry, Institute of Chemistry-University of São Paulo, Av. Prof. Lineu Prestes, 748, Cidade Universitária, São Paulo, SP, Brazil
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de Nijs M, Crews C, Dorgelo F, MacDonald S, Mulder PPJ. Emerging Issues on Tropane Alkaloid Contamination of Food in Europe. Toxins (Basel) 2023; 15:toxins15020098. [PMID: 36828413 PMCID: PMC9961018 DOI: 10.3390/toxins15020098] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2022] [Revised: 01/12/2023] [Accepted: 01/13/2023] [Indexed: 01/20/2023] Open
Abstract
The occurrence of tropane alkaloids (TAs), toxic plant metabolites, in food in Europe was studied to identify those TAs in food most relevant for human health. Information was extracted from the literature and the 2016 study from the European Food Safety Authority. Calystegines were identified as being inherent TAs in foods common in Europe, such as Solanum tuberosum (potato), S. melongena (eggplant, aubergine), Capsicum annuum (bell pepper) and Brassica oleracea (broccoli, Brussels sprouts). In addition, some low-molecular-weight tropanes and Convolvulaceae-type TAs were found inherent to bell pepper. On the other hand, atropine, scopolamine, convolvine, pseudotropine and tropine were identified as emerging TAs resulting from the presence of associated weeds in food. The most relevant food products in this respect are unprocessed and processed cereal-based foods for infants, young children or adults, dry (herbal) teas and canned or frozen vegetables. Overall, the occurrence data on both inherent as well as on associated TAs in foods are still scarce, highlighting the need for monitoring data. It also indicates the urge for food safety authorities to work with farmers, plant breeders and food business operators to prevent the spreading of invasive weeds and to increase awareness.
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Affiliation(s)
- Monique de Nijs
- Wageningen Food Safety Research, Wageningen University & Research, 6708 WB Wageningen, The Netherlands
- Correspondence:
| | | | - Folke Dorgelo
- Wageningen Food Safety Research, Wageningen University & Research, 6708 WB Wageningen, The Netherlands
| | | | - Patrick P. J. Mulder
- Wageningen Food Safety Research, Wageningen University & Research, 6708 WB Wageningen, The Netherlands
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Zambrano-Intriago LA, Amorim CG, Araújo AN, Gritsok D, Rodríguez-Díaz JM, Montenegro MCBSM. Development of an inexpensive and rapidly preparable enzymatic pencil graphite biosensor for monitoring of glyphosate in waters. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 855:158865. [PMID: 36165910 DOI: 10.1016/j.scitotenv.2022.158865] [Citation(s) in RCA: 13] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/06/2022] [Revised: 09/11/2022] [Accepted: 09/15/2022] [Indexed: 06/16/2023]
Abstract
Glyphosate (GLY) is the most widely used non-selective broad-spectrum herbicide worldwide under well-reported side effects on the environment and human health. That's why it's necessary to control its presence in the environment. This work describes the development of an affordable, simple, and accurate electrochemical biosensor using a pencil graphite electrode as support, a horseradish peroxidase enzyme immobilized on a polysulfone membrane doped with multi-walled carbon nanotubes. The developed electrochemical sensor was used in the determination of GLY in river and drinking water samples. Cyclic voltammetry and amperometry were used as electrochemical detection techniques for the characterization and analytical application of the developed biosensor. The working mechanism of the biosensor is based on the inhibition of the peroxidase enzyme by GLY. Under optimal experimental conditions, the biosensor showed a linear response in the concentration range of 0.1 to 10 mg L-1. The limits of detection and quantification are 0.025 ± 0.002 and 0.084 ± 0.007 mg L-1, respectively, which covers the maximum residual limit established by the EPA for drinking water (0.7 mg L-1). The proposed biosensor demonstrated high reproducibility, excellent analytical performance, repeatability, and accuracy. The sensor proved to be selective against other pesticides, organic acids, and inorganic salts. Application on real samples showed recovery rates ranging between 98.18 ± 0.11 % and 97.32 ± 0.23 %. The analytical features of the proposed biosensor make it an effective and useful tool for the detection of GLY for environmental analysis.
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Affiliation(s)
- Luis Angel Zambrano-Intriago
- LAQV-REQUIMTE/Departamento de Ciências Químicas, Faculdade de Farmácia, Universidade do Porto, R. Jorge Viterbo Ferreira, 228, 4050-313 Porto, Portugal; Laboratorio de Análisis Químicos y Biotecnológicos, Instituto de Investigación, Universidad Técnica de Manabí, Portoviejo 130105, Ecuador
| | - Célia G Amorim
- LAQV-REQUIMTE/Departamento de Ciências Químicas, Faculdade de Farmácia, Universidade do Porto, R. Jorge Viterbo Ferreira, 228, 4050-313 Porto, Portugal.
| | - Alberto N Araújo
- LAQV-REQUIMTE/Departamento de Ciências Químicas, Faculdade de Farmácia, Universidade do Porto, R. Jorge Viterbo Ferreira, 228, 4050-313 Porto, Portugal
| | - Dmitrij Gritsok
- LAQV-REQUIMTE/Departamento de Ciências Químicas, Faculdade de Farmácia, Universidade do Porto, R. Jorge Viterbo Ferreira, 228, 4050-313 Porto, Portugal
| | - Joan Manuel Rodríguez-Díaz
- Laboratorio de Análisis Químicos y Biotecnológicos, Instituto de Investigación, Universidad Técnica de Manabí, Portoviejo 130105, Ecuador; Departamento de Procesos Químicos, Facultad de Ciencias Matemáticas, Físicas y Químicas, Universidad Técnica de Manabí, Portoviejo 130105, Ecuador.
| | - Maria C B S M Montenegro
- LAQV-REQUIMTE/Departamento de Ciências Químicas, Faculdade de Farmácia, Universidade do Porto, R. Jorge Viterbo Ferreira, 228, 4050-313 Porto, Portugal.
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Chen Y, Chen WJ, Huang Y, Li J, Zhong J, Zhang W, Zou Y, Mishra S, Bhatt P, Chen S. Insights into the microbial degradation and resistance mechanisms of glyphosate. ENVIRONMENTAL RESEARCH 2022; 215:114153. [PMID: 36049517 DOI: 10.1016/j.envres.2022.114153] [Citation(s) in RCA: 20] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/18/2022] [Revised: 07/31/2022] [Accepted: 08/17/2022] [Indexed: 06/15/2023]
Abstract
Glyphosate, as one of the broad-spectrum herbicides for controlling annual and perennial weeds, is widely distributed in various environments and seriously threatens the safety of human beings and ecology. Glyphosate is currently degraded by abiotic and biotic methods, such as adsorption, photolysis, ozone oxidation, and microbial degradation. Of these, microbial degradation has become the most promising method to treat glyphosate because of its high efficiency and environmental protection. Microorganisms are capable of using glyphosate as a phosphorus, nitrogen, or carbon source and subsequently degrade glyphosate into harmless products by cleaving C-N and C-P bonds, in which enzymes and functional genes related to glyphosate degradation play an indispensable role. There have been many studies on the abiotic and biotic treatment technologies, microbial degradation pathways and intermediate products of glyphosate, but the related enzymes and functional genes involved in the glyphosate degradation pathways have not been further discussed. There is little information on the resistance mechanisms of bacteria and fungi to glyphosate, and previous investigations of resistance mechanisms have mainly focused on how bacteria resist glyphosate damage. Therefore, this review explores the microorganisms, enzymes and functional genes related to the microbial degradation of glyphosate and discusses the pathways of microbial degradation and the resistance mechanisms of microorganisms to glyphosate. This review is expected to provide reference for the application and improvement of the microbial degradation of glyphosate in microbial remediation.
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Affiliation(s)
- Yongsheng 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
| | - 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
| | - 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
| | - 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
| | - Jianfeng Zhong
- 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
| | - Wenping 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
| | - Yi Zou
- 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
| | - Sandhya Mishra
- Environmental Technologies Division, CSIR-National Botanical Research Institute, Rana Pratap Marg, Lucknow, 226001, India
| | - 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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Deng W, Duan Z, Li Y, Peng C, Yuan S. Multiple Resistance Mechanisms Involved in Glyphosate Resistance in Eleusine indica. PLANTS (BASEL, SWITZERLAND) 2022; 11:3199. [PMID: 36501239 PMCID: PMC9740094 DOI: 10.3390/plants11233199] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/15/2022] [Revised: 11/16/2022] [Accepted: 11/21/2022] [Indexed: 06/17/2023]
Abstract
Glyphosate is a non-selective herbicide and is widely used for weed control in non-cultivated land in China. One susceptible (S) and five putative glyphosate-resistant (R1, R2, R3, R4, and R5) Eleusine indica biotypes were selected to investigate their resistance levels and the potential resistance mechanisms. Based on the dose-response assays, the R3 and R5 biotypes showed a low-level (2.4 to 3.5-fold) glyphosate resistance, and the R1, R2, and R4 biotypes exhibited a moderate- to high-level (8.6 to 19.2-fold) resistance, compared with the S biotype. The analysis of the target-site resistance (TSR) mechanism revealed that the P106A mutation and the heterozygous double T102I + P106S mutation were found in the R3 and R4 biotypes, respectively. In addition, the similar EPSPS gene overexpression was observed in the R1, R2, and R5 biotypes, suggesting that additional non-target-site resistance (NTSR) mechanisms may contribute to glyphosate resistance in R1 and R2 biotypes. Subsequently, an RNA-Seq analysis was performed to identify candidate genes involved in NTSR. In total, ten differentially expressed contigs between untreated S and R1 or R2 plants, and between glyphosate-treated S and R1 or R2 plants, were identified and further verified with RT-qPCR. One ATP-binding cassette (ABC) transporter gene, one aldo-keto reductases (AKRs) gene and one cytochrome P450 monooxygenase (CytP450) gene were up-regulated in R1 or R2 plants. These results indicated that EPSPS overexpression, single or double mutation was a common TSR mechanisms in E. indica. Additional NTSR mechanisms could play an essential role in glyphosate resistance. Three genes, ABCC4, AKR4C10, and CYP88, could serve as important candidate genes and deserve further functional studies.
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Zhu H, Zhang Y, Mu D, Bai L, Zhuang H, Li H. YOLOX-based blue laser weeding robot in corn field. FRONTIERS IN PLANT SCIENCE 2022; 13:1017803. [PMID: 36407588 PMCID: PMC9674089 DOI: 10.3389/fpls.2022.1017803] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/12/2022] [Accepted: 09/05/2022] [Indexed: 06/16/2023]
Abstract
A YOLOX convolutional neural network-based weeding robot was designed for weed removal in corn seedling fields, while verifying the feasibility of a blue light laser as a non-contact weeding tool. The robot includes a tracked mobile platform module, a weed identification module, and a robotic arm laser emitter module. Five-degree-of-freedom robotic arm designed according to the actual weeding operation requirements to achieve precise alignment of the laser. When the robot is in operation, it uses the texture and shape of the plants to differentiate between weeds and corn seedlings. The robot then uses monocular ranging to calculate the coordinates of the weeds using the triangle similarity principle, and it controls the end actuator of the robotic arm to emit the laser to kill the weeds. At a driving speed of 0.2 m·s-1 on flat ground, the weed robot's average detection rate for corn seedlings and weeds was 92.45% and 88.94%, respectively. The average weed dry weight prevention efficacy was 85%, and the average seedling injury rate was 4.68%. The results show that the robot can accurately detect weeds in corn fields, and the robotic arm can precisely align the weed position and the blue light laser is effective in removing weeds.
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Affiliation(s)
- Huibin Zhu
- College of Modern Agricultural Engineering, Kunming University of Science and Technology, Kunming, China
| | - Yuanyuan Zhang
- College of Modern Agricultural Engineering, Kunming University of Science and Technology, Kunming, China
| | - Danlei Mu
- College of Modern Agricultural Engineering, Kunming University of Science and Technology, Kunming, China
| | - Lizhen Bai
- College of Modern Agricultural Engineering, Kunming University of Science and Technology, Kunming, China
| | - Hao Zhuang
- College of Modern Agricultural Engineering, Kunming University of Science and Technology, Kunming, China
| | - Hui Li
- Shandong Academy of Agricultural Machinery Science, Jinan, China
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Cabrera-Pérez C, Valencia-Gredilla F, Royo-Esnal A, Recasens J. Organic Mulches as an Alternative to Conventional Under-Vine Weed Management in Mediterranean Irrigated Vineyards. PLANTS (BASEL, SWITZERLAND) 2022; 11:2785. [PMID: 36297812 PMCID: PMC9608967 DOI: 10.3390/plants11202785] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/04/2022] [Revised: 10/13/2022] [Accepted: 10/18/2022] [Indexed: 06/16/2023]
Abstract
Vineyard growth and grape yield can be significantly reduced by weeds, especially when these are located in the under-vine zone. Traditional weed management consists of recurrent tillage, which is associated with soil erosion and high fuel consumption, or herbicide applications, associated with damage to the environment and human health. In order to find alternative weed management methods, three field trials were carried out in Raimat (Lleida, NE Spain) with the aim of evaluating the suppressive effect of four mulches against weeds. Treatments included (1) straw mulch of Medicago sativa L., (2) straw mulch of Festuca arundinacea (L.) Schreb, (3) straw mulch of Hordeum vulgare L., (4) chopped pine wood mulch of Pinus sylvestris L., (5) mechanical cultivation and (6) herbicide application. The results showed that all mulches were efficient at controlling weeds (<20% of weed coverage) in the first year, compared with the two traditional methods, as long as the percentage of soil covered by mulches was high (>75%). In this way, pine mulch stood out above the straw mulches, as it achieved high soil cover during the three growing seasons of the study (>80%), with weed coverage values under 18%. This, together with the multiple benefits of mulches (improvements in the water balance and increases in soil organic matter, among others), make them a sustainable tool to be considered as an alternative to traditional under-vine weed management in vineyards.
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Guerra JG, Cabello F, Fernández-Quintanilla C, Peña JM, Dorado J. Plant functional diversity is affected by weed management through processes of trait convergence and divergence. FRONTIERS IN PLANT SCIENCE 2022; 13:993051. [PMID: 36275538 PMCID: PMC9585284 DOI: 10.3389/fpls.2022.993051] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/13/2022] [Accepted: 09/15/2022] [Indexed: 06/16/2023]
Abstract
Weed management involving tillage and/or herbicides has generally led to a decline of plant diversity in agroecosystems, with negative impacts on ecosystem services provision. The use of plant covers has become the predominant alternative in vineyard management, with numerous studies focusing on analyzing the advantages and disadvantages of plant covers compared to the aforementioned management. Although the impacts of weed management on taxonomic diversity have been widely studied, many gaps remain on their effects on plant functional diversity. As plant functional diversity is linked to the delivery of key ecosystem services in agroecosystems, understanding these effects could enable the development of more sustainable practices. From 2008 to 2018, a long-term trial was carried out in a Mediterranean vineyard to assess different agricultural practices. In this article, we examined how weed management, as well as irrigation use, could affect plant functional diversity. Based on 10 functional traits, such as plant height, specific leaf area or seed mass, we measured different indices of functional diversity and used null models to detect processes of trait convergence and divergence. Our results revealed that weed management and irrigation use had a significant effect on plant functional diversity. Mown plots showed the highest functional richness but were functionally convergent, since mowing was a strong functional filter on most of the traits. Tillage also behaved as a functional filter on some vegetative traits, but favored the divergence of certain reproductive traits. Herbicide-treated and irrigated plots showed the highest values of functional divergence by promoting more competitive species with more divergent trait values. The effect of weed management on these community assembly processes was shaped by the use of irrigation in vineyard rows, leading to functional divergence in those vegetative traits related to resource acquisition and seed mass. These results suggest that greater functional diversity may be associated with the bias caused by higher occurrence of competitive species (e.g. Convolvulus arvensis, Sonchus asper) with contrasting values for certain traits. Therefore, since these species are considered harmful to crops, higher plant functional diversity might not be a desirable indicator in agroecosystems.
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Affiliation(s)
- Jose G. Guerra
- Instituto de Ciencias Agrarias (CSIC), Madrid, Spain
- Escuela Técnica Superior de Ingeniería Agronómica, Alimentaria y de Biosistemas (ETSIAAB), Universidad Politécnica de Madrid, Madrid, Spain
| | - Félix Cabello
- Instituto Madrileño de Investigación y Desarrollo Rural, Agrario y Alimentario (IMIDRA), Finca El Encín, Madrid, Spain
| | | | - José M. Peña
- Instituto de Ciencias Agrarias (CSIC), Madrid, Spain
| | - José Dorado
- Instituto de Ciencias Agrarias (CSIC), Madrid, Spain
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Thompson LJ, Smith S, Stout JC, White B, Zioga E, Stanley DA. Bumblebees can be Exposed to the Herbicide Glyphosate when Foraging. ENVIRONMENTAL TOXICOLOGY AND CHEMISTRY 2022; 41:2603-2612. [PMID: 35866464 PMCID: PMC9804218 DOI: 10.1002/etc.5442] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/19/2022] [Revised: 06/10/2022] [Accepted: 07/19/2022] [Indexed: 05/23/2023]
Abstract
Herbicides are the most widely used pesticides globally. Although used to control weeds, they may also pose a risk to bee health. A key knowledge gap is how bees could be exposed to herbicides in the environment, including whether they may forage on treated plants before they die. We used a choice test to determine if bumblebees would forage on plants treated with glyphosate at two time periods after treatment. We also determined whether glyphosate and its degradation product aminomethylphosphonic acid were present as residues in the pollen collected by the bees while foraging. Finally, we explored if floral resources (nectar and pollen) remained present in plants after herbicide treatment. In general bees indiscriminately foraged on both plants treated with glyphosate and controls, showing no avoidance of treated plants. Although the time spent on individual flowers was slightly lower on glyphosate treated plants, this did not affect the bees' choice overall. We found that floral resources remained present in plants for at least 5 days after lethal treatment with glyphosate and that glyphosate residues were present in pollen for at least 70 h posttreatment. Our results suggest that bees could be exposed to herbicide in the environment, both topically and orally, by foraging on plants in the period between herbicide treatment and death. Identifying this route of exposure is a first step in understanding the risks of herbicides to bees. The effects of herbicides on bees themselves are uncertain and warrant further investigation to allow full risk assessment of these compounds to pollinating insects. Environ Toxicol Chem 2022;41:2603-2612. © 2022 The Authors. Environmental Toxicology and Chemistry published by Wiley Periodicals LLC on behalf of SETAC.
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Affiliation(s)
- Linzi J. Thompson
- School of Agriculture and Food Science, University College DublinDublinIreland
- Earth InstituteUniversity College DublinDublinIreland
| | - Stephen Smith
- School of Agriculture and Food Science, University College DublinDublinIreland
- Earth InstituteUniversity College DublinDublinIreland
| | - Jane C. Stout
- School of Natural Sciences, Trinity College DublinDublinIreland
| | - Blánaid White
- School of Chemical Sciences and DCU Water InstituteDublin City UniversityDublinIreland
| | - Elena Zioga
- School of Natural Sciences, Trinity College DublinDublinIreland
- School of Chemical Sciences and DCU Water InstituteDublin City UniversityDublinIreland
| | - Dara A. Stanley
- School of Agriculture and Food Science, University College DublinDublinIreland
- Earth InstituteUniversity College DublinDublinIreland
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Discovery of novel HPPD inhibitors based on a combination strategy of pharmacophore, consensus docking and molecular dynamics. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2022.119683] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Ibrahim RIH, Alkhudairi UA, Alhusayni SAS. Alleviation of Herbicide Toxicity in Solanum lycopersicum L.-An Antioxidant Stimulation Approach. PLANTS (BASEL, SWITZERLAND) 2022; 11:2261. [PMID: 36079642 PMCID: PMC9459734 DOI: 10.3390/plants11172261] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/16/2022] [Revised: 08/19/2022] [Accepted: 08/21/2022] [Indexed: 06/15/2023]
Abstract
Application of the herbicide glyphosate in crops is a common practice among farmers around the world. Tomato is one of the crops that are treated with glyphosate to fight weed growth and loss of crop. However, tomato plants often show phytotoxic effects from glyphosate. In this study, the ability of pongamia oil derived from Pongamia pinnata (known also as Millettia pinnata) tree to alleviate the herbicide glyphosate toxicity effects in tomato (S.lycopersicum L. cv. Micro-tom) plants was tested. Tomato plants were treated with a mixture of a dose of (GLY) glyphosate (10 mg kg−1) and different doses of pongamia oil (PO) foliar spray (5, 10, 50, and 100 mM) and compared with the herbicide or oil control (glyphosate 10 mg kg−1 or pongamia oil PO 50 mM). Some morphological features, non-enzymatic and enzymatic antioxidants, and gene expression were observed. Glyphosate-treated plants sprayed with PO 50 mM (GLY + PO 50) showed increased root biomass (0.28 g-p ≤ 0.001), shoot biomass (1.2 g-p ≤ 0.01), H2O2 (68 nmol/g), and the activities of superoxide dismutase (SOD; 40 mg-p ≤ 0.001), catalase (CAT; 81.21 mg-p ≤ 0.05), ascorbate peroxidase (APX; 80 mg-p ≤ 0.01) and glutathione reductase (GR; 53 min/mg-F4,20 = 15.88, p ≤ 0.05). In contrast, these plants showed reduced contents of Malondialdehyde (MDA; 30 nmol/g-F4,20 = 18.55, p ≤ 0.01), O2 (0.6 Abs/g), Prolne (Pro; 345 µg/g), Glutathine (GSH; 341 nmol/mg-p ≤ 0.001), ascorbate (AsA; 1.8 µmol/gm), ascorbic acid (AA; 1.62 mg-p ≤ 0.05) and dehydroascorbate (DHAR; 0.32 mg p ≤ 0.05). The gene expression analysis was conducted for seven oxidative stress related genes besides the house-keeping gene Actin as a reference. The gene CYP1A1450 showed the highest mRNA expression level (6.8 fold ± 0.4) in GLY-treated tomato plants, whereas GLY-treated plants + PO 50 showed 2.9 fold. The study concluded that foliar spray of 50 mM pongamia oil alleviated the toxic effects of glyphosate on tomato plants in the form of increased root and shoot biomass, SOD, CAT, APX, and GR activity, while reduced MDA, O2, Pro, GSH, AsA, AA, DHAR, and gene CYP1A1450 expression.
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Affiliation(s)
- Rashid I. H. Ibrahim
- Department of Biological Sciences, College of Science, King Faisal University, Al-Ahsa 31982, Saudi Arabia
- Department of Botany, Faculty of Science, University of Khartoum, PC 11115, Khartoum P.O. Box 321, Sudan
| | - Ubai A. Alkhudairi
- Department of Biological Sciences, College of Science, King Faisal University, Al-Ahsa 31982, Saudi Arabia
| | - Sultan A. S. Alhusayni
- Department of Biological Sciences, College of Science, King Faisal University, Al-Ahsa 31982, Saudi Arabia
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Li H, Yang Y, Hu Y, Chen CC, Huang JW, Min J, Dai L, Guo RT. Structural analysis and engineering of aldo-keto reductase from glyphosate-resistant Echinochloa colona. JOURNAL OF HAZARDOUS MATERIALS 2022; 436:129191. [PMID: 35739721 DOI: 10.1016/j.jhazmat.2022.129191] [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: 12/03/2021] [Revised: 05/16/2022] [Accepted: 05/17/2022] [Indexed: 06/15/2023]
Abstract
Glyphosate is a dominant organophosphate herbicide that inhibits 5-enolpyruvylshikimate-3-phosphate synthase (EPSPS) of the shikimate pathway. Glyphosate is extensively applied since manufactured, which has led to the emergence of various glyphosate-resistant crops and weeds. However, the molecular mechanism of many glyphosate-resistance machineries remains unclear. Recently, the upregulated expression of two homologous aldo-keto reductases (AKRs), designated as AKR4C16 and AKR4C17, were found to contribute to the glyphosate resistance in Echinochloa colona. This represents the first naturally evolved glyphosate-degrading machinery reported in plants. Here, we report the three-dimensional structure of these two AKR enzymes in complex with cofactor by performing X-ray crystallography. Furthermore, the binding-mode of glyphosate were elucidated in a ternary complex of AKR4C17. Based on the structural information and the previous study, we proposed a possible mechanism of action of AKR-mediated glyphosate degradation. In addition, a variant F291D of AKR4C17 that was constructed based on structure-based engineering showed a 70% increase in glyphosate degradation. In conclusion, these results demonstrate the structural features and glyphosate-binding mode of AKR4C17, which increases our understanding of the enzymatic mechanism of glyphosate bio-degradation and provides an important basis for the designation of AKR-based glyphosate-resistance for further applications.
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Affiliation(s)
- Hao Li
- State Key Laboratory of Biocatalysis and Enzyme Engineering, Hubei Hongshan Laboratory, Hubei Collaborative Innovation Center for Green Transformation of Bio-Resources, Hubei Key Laboratory of Industrial Biotechnology, School of Life Sciences, Hubei University, Wuhan 430062, PR China
| | - Yu Yang
- State Key Laboratory of Biocatalysis and Enzyme Engineering, Hubei Hongshan Laboratory, Hubei Collaborative Innovation Center for Green Transformation of Bio-Resources, Hubei Key Laboratory of Industrial Biotechnology, School of Life Sciences, Hubei University, Wuhan 430062, PR China
| | - Yumei Hu
- State Key Laboratory of Biocatalysis and Enzyme Engineering, Hubei Hongshan Laboratory, Hubei Collaborative Innovation Center for Green Transformation of Bio-Resources, Hubei Key Laboratory of Industrial Biotechnology, School of Life Sciences, Hubei University, Wuhan 430062, PR China
| | - Chun-Chi Chen
- State Key Laboratory of Biocatalysis and Enzyme Engineering, Hubei Hongshan Laboratory, Hubei Collaborative Innovation Center for Green Transformation of Bio-Resources, Hubei Key Laboratory of Industrial Biotechnology, School of Life Sciences, Hubei University, Wuhan 430062, PR China
| | - Jian-Wen Huang
- State Key Laboratory of Biocatalysis and Enzyme Engineering, Hubei Hongshan Laboratory, Hubei Collaborative Innovation Center for Green Transformation of Bio-Resources, Hubei Key Laboratory of Industrial Biotechnology, School of Life Sciences, Hubei University, Wuhan 430062, PR China
| | - Jian Min
- State Key Laboratory of Biocatalysis and Enzyme Engineering, Hubei Hongshan Laboratory, Hubei Collaborative Innovation Center for Green Transformation of Bio-Resources, Hubei Key Laboratory of Industrial Biotechnology, School of Life Sciences, Hubei University, Wuhan 430062, PR China
| | - Longhai Dai
- State Key Laboratory of Biocatalysis and Enzyme Engineering, Hubei Hongshan Laboratory, Hubei Collaborative Innovation Center for Green Transformation of Bio-Resources, Hubei Key Laboratory of Industrial Biotechnology, School of Life Sciences, Hubei University, Wuhan 430062, PR China.
| | - Rey-Ting Guo
- State Key Laboratory of Biocatalysis and Enzyme Engineering, Hubei Hongshan Laboratory, Hubei Collaborative Innovation Center for Green Transformation of Bio-Resources, Hubei Key Laboratory of Industrial Biotechnology, School of Life Sciences, Hubei University, Wuhan 430062, PR China.
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Wang H, Lei P, Liu B, Zhu J, He Q, Chen L, He J. Mutations of Asn321 and Glu322 Improve Resistance of 4-Hydroxyphenylpyruvate Dioxygenase SpHPPDm to Topramezone. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2022; 70:9703-9710. [PMID: 35856450 DOI: 10.1021/acs.jafc.2c02327] [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] [Indexed: 06/15/2023]
Abstract
As a highly efficient 4-hydroxyphenylpyruvate dioxygenase (HPPD) inhibitor herbicide, topramezone is an ideal target for herbicide-resistant genetic engineering. In this study, two mutants, K-19 (N321Y) and K-63 (Q166R/E322V), with topramezone resistance increased by 205.3 and 58.5%, respectively, were screened from the random mutation library of SpHPPDm, a topramezone-resistant HPPD mutant that we previously obtained. Sites N321 and E322 were identified as key sites for increased topramezone resistance by single-site mutation analysis. A mutant KB-145 (N321Y/E322K) was further obtained by saturation mutation at sites N321 and E322. The topramezone resistance of KB-145 increased by 955.3% compared to mutant SpHPPDm. In conclusion, this study identifies two new sites that significantly affect the topramezone resistance of SpHPPDm, which provides new insights into the molecular mechanism of herbicide resistance of HPPD, and the acquired mutants have great application potential in the construction of herbicide-resistant crops.
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Affiliation(s)
- Haiyan Wang
- Department of Microbiology, Key Laboratory of Agricultural Environmental Microbiology, Ministry of Agriculture, College of Life Sciences, Nanjing Agricultural University, Nanjing, Jiangsu 210095, People's Republic of China
| | - Peng Lei
- Department of Microbiology, Key Laboratory of Agricultural Environmental Microbiology, Ministry of Agriculture, College of Life Sciences, Nanjing Agricultural University, Nanjing, Jiangsu 210095, People's Republic of China
| | - Bin Liu
- Department of Microbiology, Key Laboratory of Agricultural Environmental Microbiology, Ministry of Agriculture, College of Life Sciences, Nanjing Agricultural University, Nanjing, Jiangsu 210095, People's Republic of China
| | - Jianchun Zhu
- Department of Microbiology, Key Laboratory of Agricultural Environmental Microbiology, Ministry of Agriculture, College of Life Sciences, Nanjing Agricultural University, Nanjing, Jiangsu 210095, People's Republic of China
| | - Qin He
- Department of Microbiology, Key Laboratory of Agricultural Environmental Microbiology, Ministry of Agriculture, College of Life Sciences, Nanjing Agricultural University, Nanjing, Jiangsu 210095, People's Republic of China
| | - Le Chen
- Excellence and Innovation Center, Jiangsu Academy of Agricultural Science, Nanjing, Jiangsu 210014, People's Republic of China
| | - Jian He
- Department of Microbiology, Key Laboratory of Agricultural Environmental Microbiology, Ministry of Agriculture, College of Life Sciences, Nanjing Agricultural University, Nanjing, Jiangsu 210095, People's Republic of China
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50
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Guerra JG, Cabello F, Fernández-Quintanilla C, Peña JM, Dorado J. Use of Under-Vine Living Mulches to Control Noxious Weeds in Irrigated Mediterranean Vineyards. PLANTS 2022; 11:plants11151921. [PMID: 35893625 PMCID: PMC9329902 DOI: 10.3390/plants11151921] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/07/2022] [Revised: 07/21/2022] [Accepted: 07/22/2022] [Indexed: 11/16/2022]
Abstract
This article assesses the use of under-vine living mulches in Mediterranean vineyards characterized by limited water resources, one of the reasons why this agronomic practice is currently unusual in these environments. The aim of the study was to test whether the use of this alternative method in Mediterranean vineyards could suppress noxious weeds without hindering optimal vineyard development. For this purpose, four native species were selected as living mulches: Festuca ovina, Pilosella officinarum, Plantago coronopus, and Plantago lanceolata. The variables measured during three years in two different experimental farms were: (a) living mulch cover, as a possible predictor of weed suppression success; (b) weed density and weed biomass, with special attention to noxious weed species; and (c) pruning weights, measured in the last year to analyze the cumulative effect of the treatments on the grapevine vegetative growth. Our results revealed that living mulches with high cover rates (average over 70%) also showed weed suppression of up to 95%, significantly controlling the occurrence of noxious weeds such as Erigeron canadensis. No significant effect of the different treatments on vine vegetative growth was found, although further studies would be necessary. Based on these findings, it can be concluded that under-vine living mulches could be an efficient and environmentally friendly method for weed control in Mediterranean vineyards where irrigation is available.
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Affiliation(s)
- Jose G Guerra
- Instituto de Ciencias Agrarias (CSIC), Serrano, 115 B, 28006 Madrid, Spain
- Escuela Técnica Superior de Ingeniería Agronómica, Alimentaria y de Biosistemas (ETSIAAB), Universidad Politécnica de Madrid, 28040 Madrid, Spain
| | - Félix Cabello
- Instituto Madrileño de Investigación y Desarrollo Rural, Agrario y Alimentario (IMIDRA), Finca El Encín, Apdo 127, 28800 Alcalá de Henares, Spain
| | | | - José Manuel Peña
- Instituto de Ciencias Agrarias (CSIC), Serrano, 115 B, 28006 Madrid, Spain
| | - José Dorado
- Instituto de Ciencias Agrarias (CSIC), Serrano, 115 B, 28006 Madrid, Spain
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