1
|
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] [What about the content of this article? (0)] [Affiliation(s)] [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.
Collapse
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
| |
Collapse
|
2
|
Zhang F, Zhang Z, Wei Z, Liu H. Microbiome-conferred herbicides resistance. New Phytol 2024; 242:327-330. [PMID: 38320978 DOI: 10.1111/nph.19574] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/08/2024]
Abstract
This article is a Commentary on Hu et al. (2023), 242: 333–343.
Collapse
Affiliation(s)
- Fengge Zhang
- College of Agro-grassland Science, Nanjing Agricultural University, Nanjing, 210095, China
| | - Zheng Zhang
- College of Life Sciences, Nanjing Agricultural University, Nanjing, 210095, China
| | - Zhong Wei
- Jiangsu Provincial Key Lab for Solid Organic Waste Utilization, Key Lab of Organic-Based Fertilizers of China, Jiangsu Collaborative Innovation Center for Solid Organic Wastes, Educational Ministry Engineering Center of Resource-Saving Fertilizers, Nanjing Agricultural University, Nanjing, 210095, China
| | - Hongwei Liu
- Hawkesbury Institute for the Environment, Western Sydney University, Penrith, NSW, 2753, Australia
| |
Collapse
|
3
|
Concepcion JT, Kaundun SS, Morris JA, Brandenburg AN, Riechers DE. Metabolism of the 4-Hydroxyphenylpyruvate Dioxygenase Inhibitor, Mesotrione, in Multiple-Herbicide-Resistant Palmer amaranth ( Amaranthus palmeri). J Agric Food Chem 2024; 72:5595-5608. [PMID: 38446412 PMCID: PMC10959109 DOI: 10.1021/acs.jafc.3c06903] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/24/2023] [Revised: 02/04/2024] [Accepted: 02/08/2024] [Indexed: 03/07/2024]
Abstract
Metabolic resistance to the maize-selective, HPPD-inhibiting herbicide, mesotrione, occurs via Phase I ring hydroxylation in resistant waterhemp and Palmer amaranth; however, mesotrione detoxification pathways post-Phase I are unknown. This research aims to (1) evaluate Palmer amaranth populations for mesotrione resistance via survivorship, foliar injury, and aboveground biomass, (2) determine mesotrione metabolism rates in Palmer amaranth populations during a time course, and (3) identify mesotrione metabolites including and beyond Phase I oxidation. The Palmer amaranth populations, SYNR1 and SYNR2, exhibited higher survival rates (100%), aboveground biomass (c.a. 50%), and lower injury (25-30%) following mesotrione treatment than other populations studied. These two populations also metabolized mesotrione 2-fold faster than sensitive populations, PPI1 and PPI2, and rapidly formed 4-OH-mesotrione. Additionally, SYNR1 and SYNR2 formed 5-OH-mesotrione, which is not produced in high abundance in waterhemp or naturally tolerant maize. Metabolite features derived from 4/5-OH-mesotrione and potential Phase II mesotrione-conjugates were detected and characterized by liquid chromatography-mass spectrometry (LCMS).
Collapse
Affiliation(s)
| | - Shiv S. Kaundun
- Herbicide
Bioscience, Syngenta, Jealott’s Hill
International Research Centre, Bracknell, Berkshire RG42
6EY, U.K.
| | - James A. Morris
- Herbicide
Bioscience, Syngenta, Jealott’s Hill
International Research Centre, Bracknell, Berkshire RG42
6EY, U.K.
| | - Autumn N. Brandenburg
- Department
of Crop Sciences, University of Illinois
at Urbana–Champaign, Urbana, Illinois 61801, United States
| | - Dean E. Riechers
- Department
of Crop Sciences, University of Illinois
at Urbana–Champaign, Urbana, Illinois 61801, United States
| |
Collapse
|
4
|
Cesco VJS, Krenchinski FH, Rodrigues DM, Alcántara-de la Cruz R, Duke SO, Velini ED, Carbonari CA. Glyphosate hormesis effects on the vegetative and reproductive development of glyphosate-susceptible and -resistant Conyza sumatrensis biotypes. Environ Pollut 2024; 345:123504. [PMID: 38325509 DOI: 10.1016/j.envpol.2024.123504] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/31/2023] [Revised: 01/18/2024] [Accepted: 02/03/2024] [Indexed: 02/09/2024]
Abstract
Low glyphosate doses that produce hormesis may alter the susceptibility to herbicides of weeds or enhance their propagation and dispersal. The objective of this work was to evaluate the hormetic effects of glyphosate on the vegetative, phenological and reproductive development in resistant (R) and susceptible (S) Conyza sumatrensis biotypes. The glyphosate resistance level of biotype R was 11.2-fold compared to the S biotype. Glyphosate doses <11.25 g ae ha-1 induced temporary and permanent hormetic effects for the number of leaves, plant height and dry mass accumulation up to 28 d after application in both R and S biotypes. The S biotype required 15-19% fewer thermal units at 1.4 and 2.8 g ae ha-1 glyphosate than untreated plants to reach the bolting stage. Also, this biotype had less thermal units associated with the appearance (1225 vs 1408 units) and opening (1520 vs 1765 units) of the first capitulum than the R biotype. In addition, glyphosate affected reproductive traits of both biotypes compared to their controls, increasing the number of capitulum's and seeds per plant up to 37 and 41% (at 2.8 and 0.7 g ae h-1, respectively) in the S biotype, and by 48 and 114% (both at 5.6 g ae ha-1) in the R biotype. Depending on environmental parameters, glyphosate may or may not cause hormetic effects on the vegetative and phenological development of C. sumatrenis biotypes; however, this herbicide increases the speed and fecundity of reproduction, regardless of the glyphosate susceptibility level, which can alter the population dynamics and glyphosate susceptibility of future generations.
Collapse
Affiliation(s)
- Victor José Salomão Cesco
- Center for Advanced Research in Weed Science, Department of Plant Protection, College of Agricultural Sciences, São Paulo State University, 18610-034, Botucatu, Brazil
| | - Fábio Henrique Krenchinski
- Center for Advanced Research in Weed Science, Department of Plant Protection, College of Agricultural Sciences, São Paulo State University, 18610-034, Botucatu, Brazil
| | - Danilo Morilha Rodrigues
- Center for Advanced Research in Weed Science, Department of Plant Protection, College of Agricultural Sciences, São Paulo State University, 18610-034, Botucatu, Brazil
| | - Ricardo Alcántara-de la Cruz
- Center for Advanced Research in Weed Science, Department of Plant Protection, College of Agricultural Sciences, São Paulo State University, 18610-034, Botucatu, Brazil.
| | - Stephen O Duke
- National Center for Natural Products Research, School of Pharmacy, University of Mississippi, Mississippi, 38677, USA
| | - Edivaldo D Velini
- Center for Advanced Research in Weed Science, Department of Plant Protection, College of Agricultural Sciences, São Paulo State University, 18610-034, Botucatu, Brazil
| | - Caio A Carbonari
- Center for Advanced Research in Weed Science, Department of Plant Protection, College of Agricultural Sciences, São Paulo State University, 18610-034, Botucatu, Brazil
| |
Collapse
|
5
|
Varah A, Ahodo K, Childs DZ, Comont D, Crook L, Freckleton RP, Goodsell R, Hicks HL, Hull R, Neve P, Norris K. Acting pre-emptively reduces the long-term costs of managing herbicide resistance. Sci Rep 2024; 14:6201. [PMID: 38485959 PMCID: PMC10940647 DOI: 10.1038/s41598-024-56525-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2023] [Accepted: 03/07/2024] [Indexed: 03/18/2024] Open
Abstract
Globally, pesticides improve crop yields but at great environmental cost, and their overuse has caused resistance. This incurs large financial and production losses but, despite this, very diversified farm management that might delay or prevent resistance is uncommon in intensive farming. We asked farmers to design more diversified cropping strategies aimed at controlling herbicide resistance, and estimated resulting weed densities, profits, and yields compared to prevailing practice. Where resistance is low, it is financially viable to diversify pre-emptively; however, once resistance is high, there are financial and production disincentives to adopting diverse rotations. It is therefore as important to manage resistance before it becomes widespread as it is to control it once present. The diverse rotations targeting high resistance used increased herbicide application frequency and volume, contributing to these rotations' lack of financial viability, and raising concerns about glyphosate resistance. Governments should encourage adoption of diverse rotations in areas without resistance. Where resistance is present, governments may wish to incentivise crop diversification despite the drop in wheat production as it is likely to bring environmental co-benefits. Our research suggests we need long-term, proactive, food security planning and more integrated policy-making across farming, environment, and health arenas.
Collapse
Affiliation(s)
- Alexa Varah
- Natural History Museum, Cromwell Road, London, UK.
| | - Kwadjo Ahodo
- Institute of Zoology, Zoological Society of London, Regent's Park, London, UK
| | - Dylan Z Childs
- Department of Animal and Plant Sciences, University of Sheffield, Western Bank, Sheffield, UK
| | - David Comont
- Department of Protecting Crops and the Environment, Rothamsted Research, Harpenden, AL5 2JQ, UK
| | - Laura Crook
- Department of Protecting Crops and the Environment, Rothamsted Research, Harpenden, AL5 2JQ, UK
| | - Robert P Freckleton
- Department of Animal and Plant Sciences, University of Sheffield, Western Bank, Sheffield, UK
| | - Rob Goodsell
- Department of Animal and Plant Sciences, University of Sheffield, Western Bank, Sheffield, UK
- Swedish Museum of Natural History, Stockholm, Sweden
| | - Helen L Hicks
- Department of Animal and Plant Sciences, University of Sheffield, Western Bank, Sheffield, UK
- School of Animal, Rural and Environmental Sciences, Nottingham Trent University, Brackenhurst Campus, Southwell, UK
| | - Richard Hull
- Department of Protecting Crops and the Environment, Rothamsted Research, Harpenden, AL5 2JQ, UK
| | - Paul Neve
- Department of Protecting Crops and the Environment, Rothamsted Research, Harpenden, AL5 2JQ, UK
- Department of Plant & Environmental Sciences, University of Copenhagen, Hoejbakkegaard Alle, 2630, Taastrup, Denmark
| | - Ken Norris
- Natural History Museum, Cromwell Road, London, UK
| |
Collapse
|
6
|
Ngow Z, James TK, Harvey B, Buddenhagen CE. A first survey for herbicide resistant weeds across major maize growing areas in the North Island of New Zealand. PLoS One 2024; 19:e0299539. [PMID: 38451981 PMCID: PMC10919694 DOI: 10.1371/journal.pone.0299539] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2023] [Accepted: 02/12/2024] [Indexed: 03/09/2024] Open
Abstract
Weeds are increasingly documented with evolved resistance to herbicides globally. Three species have been reported as resistant in maize crops in New Zealand: Chenopodium album to atrazine and dicamba, Persicaria maculosa to atrazine and Digitaria sanguinalis to nicosulfuron. Despite knowledge of these cases, the distribution of these resistant biotypes is unknown. This study aimed to determine the prevalence of known resistant weeds in major maize growing areas in New Zealand, and to pro-actively screen other species for resistance. Weed seeds of broadleaf and grass species were collected from 70 randomly selected maize growing farms in the North Island in 2021-2022. Seeds were grown and treated with herbicides at recommended field rates. Atrazine-resistant C. album were recorded in a third of surveyed farms and nicosulfuron-resistant D. sanguinalis in a sixth. Half of Waikato farms and a quarter of Bay of Plenty farms (no Hawkes Bay or Wellington farms) had atrazine-resistant C. album. Dicamba-resistant C. album were not detected, nor were atrazine-resistant P. maculosa. Nicosulfuron resistant D. sanguinalis was recorded in 19% of Waikato farms, 6% of Bay of Plenty farms and 9% of Hawkes Bay farms (no Wellington farms). Amaranthus spp., Fallopia convolvulus, Persicaria spp., Solanum spp., Echinochloa crus-galli, Panicum spp. and Setaria spp. were not resistant to any of the herbicides tested. Twenty-nine to 52% of maize farms in the North Island are estimated to have herbicide resistant weeds. Resistance is common in maize farms in Waikato and western Bay of Plenty. Resistance is rare in southern regions, with only one instance of nicosulfuron-resistant D. sanguinalis and no resistant C. album. Most annual weeds in maize are not resistant to herbicides; although atrazine resistant C. album is widespread, it is currently controlled with alternative herbicides. Resistant D. sanguinalis appears to be an emerging problem.
Collapse
Affiliation(s)
- Zachary Ngow
- AgResearch Ltd., Ruakura Research Centre, Hamilton, New Zealand
| | - Trevor K. James
- AgResearch Ltd., Ruakura Research Centre, Hamilton, New Zealand
| | - Ben Harvey
- Foundation for Arable Research, Christchurch, New Zealand
| | | |
Collapse
|
7
|
Eceiza MV, Jimenez-Martinez C, Gil-Monreal M, Barco-Antoñanzas M, Font-Farre M, Huybrechts M, van der Hoorn RL, Cuypers A, Royuela M, Zabalza A. Role of glutathione S-transferases in the mode of action of herbicides that inhibit amino acid synthesis in Amaranthus palmeri. Plant Physiol Biochem 2024; 208:108506. [PMID: 38461753 DOI: 10.1016/j.plaphy.2024.108506] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/23/2023] [Revised: 02/29/2024] [Accepted: 03/04/2024] [Indexed: 03/12/2024]
Abstract
Acetolactate synthase inhibitors (ALS inhibitors) and glyphosate are two classes of herbicides that act by inhibiting an enzyme in the biosynthetic pathway of branched-chain or aromatic amino acids, respectively. Besides amino acid synthesis inhibition, both herbicides trigger similar physiological effects in plants. The main aim of this study was to evaluate the role of glutathione metabolism, with special emphasis on glutathione S-transferases (GSTs), in the mode of action of glyphosate and ALS inhibitors in Amaranthus palmeri. For that purpose, plants belonging to a glyphosate-sensitive (GLS) and a glyphosate-resistant (GLR) population were treated with different doses of glyphosate, and plants belonging to an ALS-inhibitor sensitive (AIS) and an ALS-inhibitor resistant (AIR) population were treated with different doses of the ALS inhibitor nicosulfuron. Glutathione-related contents, GST activity, and related gene expressions (glutamate-cysteine ligase, glutathione reductase, Phi GST and Tau GST) were analysed in leaves. According to the results of the analytical determinations, there were virtually no basal differences between GLS and GLR plants or between AIS and AIR plants. Glutathione synthesis and turnover did not follow a clear pattern in response to herbicides, but GST activity and gene expression (especially Phi GSTs) increased with both herbicides in treated sensitive plants, possibly related to the rocketing H2O2 accumulation. As GSTs offered the clearest results, these were further investigated with a multiple resistant (MR) population, compressing target-site resistance to both glyphosate and the ALS inhibitor pyrithiobac. As in single-resistant plants, measured parameters in the MR population were unaffected by herbicides, meaning that the increase in GST activity and expression occurs due to herbicide interactions with the target enzymes.
Collapse
Affiliation(s)
- Mikel V Eceiza
- Institute for Multidisciplinary Research in Applied Biology (IMAB), Universidad Pública de Navarra (UPNA), Campus de Arrosadia, Pamplona, Spain
| | - Clara Jimenez-Martinez
- Institute for Multidisciplinary Research in Applied Biology (IMAB), Universidad Pública de Navarra (UPNA), Campus de Arrosadia, Pamplona, Spain
| | - Miriam Gil-Monreal
- Institute for Multidisciplinary Research in Applied Biology (IMAB), Universidad Pública de Navarra (UPNA), Campus de Arrosadia, Pamplona, Spain
| | - María Barco-Antoñanzas
- Institute for Multidisciplinary Research in Applied Biology (IMAB), Universidad Pública de Navarra (UPNA), Campus de Arrosadia, Pamplona, Spain
| | - Maria Font-Farre
- The Plant Chemetics Laboratory, Department of Biology Sciences, University of Oxford, Oxford, UK
| | - Michiel Huybrechts
- Environmental Biology, Centre for Environmental Sciences, Hasselt University, B-3590, Diepenbeek, Belgium
| | - RenierA L van der Hoorn
- The Plant Chemetics Laboratory, Department of Biology Sciences, University of Oxford, Oxford, UK
| | - Ann Cuypers
- Environmental Biology, Centre for Environmental Sciences, Hasselt University, B-3590, Diepenbeek, Belgium
| | - Mercedes Royuela
- Institute for Multidisciplinary Research in Applied Biology (IMAB), Universidad Pública de Navarra (UPNA), Campus de Arrosadia, Pamplona, Spain
| | - Ana Zabalza
- Institute for Multidisciplinary Research in Applied Biology (IMAB), Universidad Pública de Navarra (UPNA), Campus de Arrosadia, Pamplona, Spain.
| |
Collapse
|
8
|
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 Manag Sci 2024; 80:1446-1453. [PMID: 37946692 DOI: 10.1002/ps.7875] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [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.
Collapse
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
| |
Collapse
|
9
|
Goggin DE, Cawthray GR, Busi R. Pyroxasulfone Metabolism in Resistant Lolium rigidum: Is It All Down to GST Activity? J Agric Food Chem 2024; 72:3937-3948. [PMID: 38354096 DOI: 10.1021/acs.jafc.3c08141] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/16/2024]
Abstract
Resistance to the herbicide pyroxasulfone has slowly but steadily increased in agricultural weeds. The evolved resistance of one Lolium rigidum population has been attributed to the conjugation of pyroxasulfone to reduced glutathione, mediated by glutathione transferase (GST) activity. To determine if GST-based metabolism is a widespread mechanism of pyroxasulfone resistance in L. rigidum, a number of putative-resistant populations were screened for GST activity toward pyroxasulfone, the presence of GSTF13-like isoforms (previously implicated in pyroxasulfone conjugation in this species), tissue glutathione concentrations, and response to inhibitors of GSTs and oxygenases. Although there were no direct correlations between pyroxasulfone resistance levels and these individual parameters, a random forest analysis indicated that GST activity was of primary importance for L. rigidum resistance to this herbicide.
Collapse
Affiliation(s)
- Danica E Goggin
- Australian Herbicide Resistance Initiative, School of Agriculture and Environment, University of Western Australia, 35 Stirling Highway, Crawley 6009, Australia
| | - Gregory R Cawthray
- Separation Science and Mass Spectrometry Facility, University of Western Australia, 35 Stirling Highway, Crawley 6009, Australia
| | - Roberto Busi
- Australian Herbicide Resistance Initiative, School of Agriculture and Environment, University of Western Australia, 35 Stirling Highway, Crawley 6009, Australia
| |
Collapse
|
10
|
Paul SK, Xi Y, Sanderson P, Naidu R. Controlled release herbicide formulation for effective weed control efficacy. Sci Rep 2024; 14:4216. [PMID: 38378734 PMCID: PMC10879510 DOI: 10.1038/s41598-024-53820-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2023] [Accepted: 02/05/2024] [Indexed: 02/22/2024] Open
Abstract
Controlled release formulation (CRF) of herbicide is an effective weed management technique with less eco-toxicity than other available commercial formulations. To maximise the effectiveness of CRFs however, it is crucial to understand the herbicide-releasing behaviour at play, which predominately depends on the interaction mechanisms between active ingredients and carrier materials during adsorption. In this study, we investigated and modelled the adsorption characteristics of model herbicide 2,4-D onto two organo-montmorillonites (octadecylamine- and aminopropyltriethoxysilane-modified) to synthesise polymer-based CRFs. Herbicide-releasing behaviour of the synthesised CRF microbeads was then analysed under various experimental conditions, and weed control efficacy determined under glasshouse conditions. Results revealed that adsorption of 2,4-D onto both organo-montmorillonites follows the pseudo-second-order kinetics model and is predominately controlled by the chemisorption process. However, multi-step mechanisms were detected in the adsorption on both organoclays, hence intra-particle diffusion is not the sole rate-limiting step for the adsorption process. Both organoclays followed the Elovich model, suggesting they have energetically heterogeneous surfaces. Herbicide-releasing behaviours of synthesised beads were investigated at various pH temperatures and ionic strengths under laboratory and glasshouse conditions. Furthermore, weed control efficacy of synthesised beads were investigated using pot studies under glasshouse condition. Desorption studies revealed that both synthesised microbeads have slow releasing behaviour at a wide range of pHs (5-9), temperatures (25-45 °C), and ionic strengths. The results also revealed that synthesised microbeads have excellent weed control efficacy on different broad-leaf weed species under glasshouse conditions.
Collapse
Affiliation(s)
- Santosh Kumar Paul
- Global Centre for Environmental Remediation (GCER), The University of Newcastle, ATC Building, Callaghan, NSW, 2308, Australia
- CRC for Contamination Assessment and Remediation of the Environment (CRC CARE), The University of Newcastle, ATC Building, Callaghan, NSW, 2308, Australia
- Agronomy Division, Bangladesh Agricultural Research Institute (BARI), Joydebpur, Gazipur, 1701, Bangladesh
| | - Yunfei Xi
- Central Analytical Research Facility (CARF) & School of Chemistry and Physics - Faculty of Science, Queensland University of Technology, Brisbane, QLD, 4001, Australia
| | - Peter Sanderson
- Global Centre for Environmental Remediation (GCER), The University of Newcastle, ATC Building, Callaghan, NSW, 2308, Australia
- CRC for Contamination Assessment and Remediation of the Environment (CRC CARE), The University of Newcastle, ATC Building, Callaghan, NSW, 2308, Australia
| | - Ravi Naidu
- Global Centre for Environmental Remediation (GCER), The University of Newcastle, ATC Building, Callaghan, NSW, 2308, Australia.
- CRC for Contamination Assessment and Remediation of the Environment (CRC CARE), The University of Newcastle, ATC Building, Callaghan, NSW, 2308, Australia.
| |
Collapse
|
11
|
Sharifi Kalyani F, Babaei S, Zafarsohrabpour Y, Nosratti I, Gage K, Sadeghpour A. Investigating the impacts of airborne dust on herbicide performance on Amaranthus retroflexus. Sci Rep 2024; 14:3785. [PMID: 38360846 PMCID: PMC10869696 DOI: 10.1038/s41598-024-54134-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2023] [Accepted: 02/08/2024] [Indexed: 02/17/2024] Open
Abstract
Dust pollution poses environmental hazards, affecting agriculture through reduced sunlight exposure, photosynthesis, crop yields, and food security. This study explores the interference of dust pollution on herbicide efficacy to control weeds in a semi-arid region. In a factorial experiment conducted in 2019 and replicated in 2020, the interaction of dust and various herbicide applications, including bentazon, sulfosulfuron, tribenuron-methyl, aminopyralid + florasulam, foramsulfuron + iodosulfuron + thiencarbazone, 2,4-D + MCPA, and acetochlor, in controlling Amaranthus retroflexus L. were assessed. Dust induced a 9.2% reduction in the total chlorophyll content of A. retroflexus, while herbicide application independently led to a 67.5% decrease. Contrary to expectations, herbicides performed better in dust, except bentazon, which caused a 28% drop in plant height and a 29% decrease in total biomass compared to non-dust conditions. Both herbicides and dust exerted suppressive effects on A. retroflexus's leaf and stem weights and overall biomass. Despite dust presence, tribenuron-methyl (95.8%), aminopyralid + florasulam (95.7%), sulfosulfuron (96.5%), and foramsulfuron + iodosulfuron + thiencarbazone (97.8%) effectively controlled A. retroflexus. These findings indicate that dust's effect on herbicide efficacy is herbicide-dependent but except bentazon, dust generally increased herbicide efficacy and amplified the control of A. retroflexus.
Collapse
Affiliation(s)
- Firouzeh Sharifi Kalyani
- Department of Plant Production and Genetics, Faculty of Agriculture, University of Kurdistan, Sanandaj, Iran
| | - Sirwan Babaei
- Department of Plant Production and Genetics, Faculty of Agriculture, University of Kurdistan, Sanandaj, Iran.
- Crop, Soil, and Environmental Management Program, School of Agricultural Sciences, Southern Illinois University, Carbondale, IL, 62901, USA.
| | - Yasin Zafarsohrabpour
- Department of Plant Production and Genetics, Faculty of Agriculture, University of Kurdistan, Sanandaj, Iran
| | - Iraj Nosratti
- Department of Plant Production and Genetics, Faculty of Agriculture and Natural Resources, Razi University, Kermanshah, Iran
| | - Karla Gage
- Crop, Soil, and Environmental Management Program, School of Agricultural Sciences, Southern Illinois University, Carbondale, IL, 62901, USA
| | - Amir Sadeghpour
- Crop, Soil, and Environmental Management Program, School of Agricultural Sciences, Southern Illinois University, Carbondale, IL, 62901, USA
| |
Collapse
|
12
|
Leon RG, Bassham DC. PROTAC for agriculture: learning from human medicine to generate new biotechnological weed control solutions. Pest Manag Sci 2024; 80:262-266. [PMID: 37612249 DOI: 10.1002/ps.7741] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/13/2023] [Revised: 08/18/2023] [Accepted: 08/24/2023] [Indexed: 08/25/2023]
Abstract
Weed control has relied on the use of organic and inorganic molecules that interfere with druggable targets, especially enzymes, for almost a century. This approach, although effective, has resulted in multiple cases of herbicide resistance. Furthermore, the rate of discovery of new druggable targets that are selective and with favorable environmental profiles has slowed down, highlighting the need for innovative control tools. The arrival of the biotechnology and genomics era gave hope to many that all sorts of new control tools would be developed. However, the reality is that most efforts have been limited to the development of transgenic crops with resistance to a few existing herbicides, which in fact is just another form of selectivity. Proteolysis-targeting chimera (PROTAC) is a new technology developed to treat human diseases but that has potential for multiple applications in agriculture. This technology uses a small bait molecule linked to an E3 ligand. The 3-dimensional structure of the bait favors physical interaction with a binding site in the target protein in a manner that allows E3 recruitment, ubiquitination and then proteasome-mediated degradation. This system makes it possible to circumvent the need to find druggable targets because it can degrade structural proteins, transporters, transcription factors, and enzymes without the need to interact with the active site. PROTAC can help control herbicide-resistant weeds as well as expand the number of biochemical targets that can be used for weed control. In the present article, we provide an overview of how PROTAC works and describe the possible applications for weed control as well as the challenges that this technology might face during development and implementation for field uses. © 2023 The Authors. Pest Management Science published by John Wiley & Sons Ltd on behalf of Society of Chemical Industry.
Collapse
Affiliation(s)
- Ramon G Leon
- Professor and University Faculty Scholar, Department of Crop and Soil Sciences, North Carolina State University, Raleigh, NC, USA
| | - Diane C Bassham
- Distinguished Professor and Walter E. and Helen Parke Loomis Professor of Plant Physiology, Department of Genetics, Development and Cell Biology, Iowa State University, Ames, IA, USA
| |
Collapse
|
13
|
Neal JC. Biological Control of Weeds in turfgrass: opportunities and misconceptions. Pest Manag Sci 2024; 80:40-48. [PMID: 36863875 DOI: 10.1002/ps.7436] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/17/2022] [Revised: 02/20/2023] [Accepted: 03/03/2023] [Indexed: 06/18/2023]
Abstract
Turfgrass systems may offer opportunities for overcoming some constraints on the successful implementation of weed biocontrol. Of the roughly 16.4 million ha of turfgrass in the USA, ≈60-75% are in residential lawns and 3% are golf turf. Annual expenditures for a standard herbicide treatment regimen for residential turf are estimated to be ≈US$326 ha-1 , about 2-3-fold greater than that for USA corn and soybean growers. Expenditures can be >US$3000 ha-1 for control of certain weeds such as Poa annua in high-value areas including golf fairways or greens, but those applications are made to far smaller areas. Regulatory actions and consumer preferences are creating market opportunities for alternatives to synthetic herbicides in both commercial and consumer markets, but the size of these markets and willingness-to-pay are poorly documented. Turfgrass sites are intensively managed, yet despite the ability to modify site conditions through irrigation, mowing and fertility management, microbial biocontrol agents tested thus far have not provided the consistently high levels of weed control expected in the market. Recent advances in microbial bioherbicide products may offer a path to overcome many of the obstacles to success. No single herbicide will control the diversity of turfgrass weeds, nor will any single biocontrol agent or biopesticide. Successful development of weed biocontrol for turfgrass systems will require numerous, effective biocontrol agents for the many weed species found in turfgrass environments, as well as a deeper understanding of different turfgrass market segments, and weed management expectations for each segment. © 2023 The Author. Pest Management Science published by John Wiley & Sons Ltd on behalf of Society of Chemical Industry.
Collapse
Affiliation(s)
- Joseph C Neal
- Department of Horticultural Science, North Carolina State University, Raleigh, NC, USA
| |
Collapse
|
14
|
Duke SO, Pan Z, Bajsa-Hirschel J, Tamang P, Hammerschmidt R, Lorsbach BA, Sparks TC. Molecular Targets of Herbicides and Fungicides─Are There Useful Overlaps for Fungicide Discovery? J Agric Food Chem 2023; 71:20532-20548. [PMID: 38100716 PMCID: PMC10755756 DOI: 10.1021/acs.jafc.3c07166] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/03/2023] [Revised: 11/20/2023] [Accepted: 11/21/2023] [Indexed: 12/17/2023]
Abstract
New fungicide modes of action are needed for fungicide resistance management strategies. Several commercial herbicide targets found in fungi that are not utilized by commercial fungicides are discussed as possible fungicide molecular targets. These are acetyl CoA carboxylase, acetolactate synthase, 5-enolpyruvylshikimate-3-phosphate synthase, glutamine synthase, phytoene desaturase, protoporphyrinogen oxidase, long-chain fatty acid synthase, dihydropteroate synthase, hydroxyphenyl pyruvate dioxygenase, and Ser/Thr protein phosphatase. Some of the inhibitors of these herbicide targets appear to be either good fungicides or good leads for new fungicides. For example, some acetolactate synthase and dihydropteroate inhibitors are excellent fungicides. There is evidence that some herbicides have indirect benefits to certain crops due to their effects on fungal crop pathogens. Using a pesticide with both herbicide and fungicide activities based on the same molecular target could reduce the total amount of pesticide used. The limitations of such a product are discussed.
Collapse
Affiliation(s)
- Stephen O. Duke
- National
Center for Natural Products Research, School of Pharmacy, University of Mississippi, University 38667, United States
| | - Zhiqiang Pan
- Natural
Products Utilization Research Unit, United
States Department of Agriculture, University 38667, United States
| | - Joanna Bajsa-Hirschel
- Natural
Products Utilization Research Unit, United
States Department of Agriculture, University 38667, United States
| | - Prabin Tamang
- Natural
Products Utilization Research Unit, United
States Department of Agriculture, University 38667, United States
| | - Raymond Hammerschmidt
- Department
of Plant, Soil and Microbial Sciences, Michigan
State University, East Lansing, Michigan 48824, United States
| | - Beth A. Lorsbach
- Nufarm, 4020 Aerial Center Parkway, Morrisville, North Carolina 27560, United States
| | | |
Collapse
|
15
|
Kerr DR, Concepcion JCT, Strom SA, Riechers DE. Quantifying resistance to very-long-chain fatty acid-inhibiting herbicides in Amaranthus tuberculatus using a soilless assay. PLoS One 2023; 18:e0295927. [PMID: 38134124 PMCID: PMC10745185 DOI: 10.1371/journal.pone.0295927] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2023] [Accepted: 12/01/2023] [Indexed: 12/24/2023] Open
Abstract
Resistance to preemergence (PRE) soil-applied herbicides, such as inhibitors of very-long-chain fatty acid (VLCFA) elongases, was documented in two waterhemp [Amaranthus tuberculatus (Moq.) J.D. Sauer] populations (SIR and CHR) from Illinois, USA. To limit the spread of resistant weed populations, rapid detection measures are necessary. Soil-based resistance assays are limited by edaphic factors, application timing, variable seeding depth and rainfall amount. Therefore, cost-effective techniques mitigating effects of edaphic factors that are appropriate for small- to large-scale assays are needed. Our research goal was to identify and quantify resistance to the VLCFA-inhibiting herbicides, S-metolachlor and pyroxasulfone, using a soilless greenhouse assay. Dose-response experiments were conducted under greenhouse conditions with pre-germinated waterhemp seeds planted on the vermiculite surface, which had been saturated with S-metolachlor (0.015-15 μM), pyroxasulfone (0.0005-1.5 μM), or S-metolachlor plus the cytochrome P450 (P450) inhibitor, malathion. Lethal dose estimates of 50% (LD50) and growth reduction of 50% (GR50) were calculated for S-metolachlor and pyroxasulfone PRE and used to determine resistance indices (RI) for resistant populations (CHR and SIR) relative to sensitive populations, SEN and ACR. RI values for S-metolachlor using LD50 values calculated relative to SEN and ACR were 17.2 and 15.2 (CHR) or 11.5 and 10.1 (SIR), while RI values for pyroxasulfone using LD50 values calculated relative to SEN and ACR were 3.8 and 3.1 (CHR) or 4.8 and 3.8 (SIR). Malathion decreased the GR50 of S-metolachlor to a greater degree in CHR compared to ACR, consistent with P450 involvement in S-metolachlor resistance in CHR. Results from these soilless assays are in accord with previous findings in soil-based systems that demonstrate CHR and SIR are resistant to S-metolachlor and pyroxasulfone. This method provides an effective, reproducible alternative to soil-based systems for studying suspected PRE herbicide-resistant populations and will potentially assist in identifying non-target-site resistance mechanisms.
Collapse
Affiliation(s)
- Dylan R. Kerr
- Department of Crop Sciences, University of Illinois, Urbana, IL, United States of America
| | | | - Seth A. Strom
- Department of Crop Sciences, University of Illinois, Urbana, IL, United States of America
| | - Dean E. Riechers
- Department of Crop Sciences, University of Illinois, Urbana, IL, United States of America
| |
Collapse
|
16
|
Hamberg RC, Yadav R, Dixon PM, Licht MA, Owen MD. Monitoring the temporal changes in herbicide-resistant Amaranthus tuberculatus: a landscape-scale probability-based estimation in Iowa. Pest Manag Sci 2023; 79:4819-4827. [PMID: 37498675 DOI: 10.1002/ps.7682] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/26/2023] [Revised: 07/19/2023] [Accepted: 07/27/2023] [Indexed: 07/29/2023]
Abstract
BACKGROUND A landscape-scale probability-based sampling of Iowa soybean [Glycine max (L.) Merr.] fields was conducted in 2013 and 2019; Amaranthus tuberculatus [Moq.] J.D. Sauer seed was collected from 97 random geospatial selected fields. The objectives were to evaluate the prevalence and distribution of herbicide-resistant A. tuberculatus (waterhemp) in soybean fields and evaluate temporal changes over 6 years. Amaranthus tuberculatus seedlings were evaluated for resistance to imazethapyr, atrazine, glyphosate, lactofen and mesotrione at 1× and 4× label rates. RESULTS Resistance to imazethapyr, glyphosate, lactofen and mesotrione at the 1× rate increased significantly from 2013 to 2019 and was found in 99%, 97%, 16% and 15% of Iowa A. tuberculatus populations in 2019, respectively. Resistance to atrazine at the 4× rate increased over time; atrazine resistance was found in 68% of populations in 2019. Three-way multiple herbicide-resistant A. tuberculatus was the most frequent and increased significantly to 4× rates from 16% in 2013 to 43% of populations in 2019. All A. tuberculatus populations resistant to HPPD-inhibitor herbicides also were resistant to atrazine. CONCLUSION To the best of our knowledge, this is the first probability-based study that presented evolution of A. tuberculatus herbicide resistance over time. The results demonstrated that imazethapyr, atrazine and glyphosate resistance in Iowa A. tuberculatus populations was frequent whereas resistance to lactofen and mesotrione was less frequent. Most Iowa A. tuberculatus populations evolved resistance to multiple sites of action over time. The results of our study are widely applicable given the similarities in weed management practices throughout the Midwest United States. © 2023 The Authors. Pest Management Science published by John Wiley & Sons Ltd on behalf of Society of Chemical Industry.
Collapse
Affiliation(s)
- Ryan C Hamberg
- Department of Agronomy, Iowa State University, Ames, Iowa, USA
| | - Ramawatar Yadav
- Department of Agronomy, Iowa State University, Ames, Iowa, USA
| | - Philip M Dixon
- Department of Statistics, Iowa State University, Ames, Iowa, USA
| | - Mark A Licht
- Department of Agronomy, Iowa State University, Ames, Iowa, USA
| | - Micheal Dk Owen
- Department of Agronomy, Iowa State University, Ames, Iowa, USA
| |
Collapse
|
17
|
Deng XL, Li JQ, Yi JM, Lian RJ, Zhang ZY, Li JH, He S, Bai LY. A pH-responsive MOF-functionalized hollow mesoporous silica controlled herbicide delivery system exhibits enhanced activity against ACCase-herbicide-resistant weeds. Pest Manag Sci 2023; 79:5237-5249. [PMID: 37595063 DOI: 10.1002/ps.7729] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/27/2023] [Revised: 08/15/2023] [Accepted: 08/18/2023] [Indexed: 08/20/2023]
Abstract
BACKGROUND Weeds grow aggressively in agricultural fields, leading to reduced crop yields and an inability to meet the growing demand for food. Herbicides are currently the most effective method for weed control. However, the overuse of herbicides has resulted in the evolution of resistance mutants and has caused environmental pollution. Therefore, new technologies are urgently required to address this global challenge. RESULTS We report a copper-benzene-1,4-dicarboxylate metal organic framework (Cu-BDC MOF)-functionalized carboxyl hollow mesoporous silica (HMS-COOH) delivery system for the pH-controlled release of the acetyl-CoA carboxylase (ACCase)-inhibiting herbicide quizalofop-p-ethyl (QE). The delivery system (QE@HMS@Cu-BDC) enabled the efficient control of barnyard grasses that are susceptible and resistant to ACCase-inhibiting herbicides, which showed 93.33% and 88.33% FW control efficacy at 67.5 g ha-1 , respectively. With the lowest pH value (3), QE and copper ion were released slowly to total 70.30% and 78.55% levels (respectively) from QE@HMS@Cu-BDC after 89 h. QE@HMS@Cu-BDC showed better absorption, conduction, transportation and ACCase activity inhibition performance than that of QE emulsifiable concentrate (EC) in both susceptible and ACCase-herbicide resistant barnyard grasses. In addition, with the safener effect of carrier HMS@Cu-BDC and the aid of the safener fenchlorazole-ethyl (FE), the application of QE@HMS@Cu-BDC was shown to mitigate the damage caused by QE to rice plants. CONCLUSION This work found that the new material HMS-COOH@Cu-BDC can be used to mitigate herbicide-induced oxidative stress and improve rice plant safety. Futhermore, the QE@HMS-COOH@Cu-BDC constructed in this research might be used as an efficient nanopesticide formulation for weed controls in paddy rice fields. © 2023 Society of Chemical Industry.
Collapse
Affiliation(s)
- Xi-le Deng
- Key Laboratory for Biology and Control of Weeds, Hunan Agricultural Biotechnology Research Institute, Hunan Academy of Agricultural Sciences, Changsha, China
| | - Jia-Qing Li
- The Center of Crop Nanobiotechnology, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, China
| | - Ji-Ming Yi
- College of Plant Protection, Hunan Agricultural University, Changsha, China
| | - Ren-Jie Lian
- The Center of Crop Nanobiotechnology, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, China
| | - Zhao-Yang Zhang
- The Center of Crop Nanobiotechnology, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, China
| | - Jian-Hong Li
- The Center of Crop Nanobiotechnology, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, China
| | - Shun He
- The Center of Crop Nanobiotechnology, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, China
| | - Lian-Yang Bai
- Key Laboratory for Biology and Control of Weeds, Hunan Agricultural Biotechnology Research Institute, Hunan Academy of Agricultural Sciences, Changsha, China
| |
Collapse
|
18
|
Selby TP, Satterfield AD, Puri A, Stevenson TM, Travis DA, Campbell MJ, Taggi AE, Hughes KA, Bereznak J. Bioisosteric Tactics in the Discovery of Tetflupyrolimet: A New Mode-of-Action Herbicide. J Agric Food Chem 2023; 71:18197-18204. [PMID: 37285594 DOI: 10.1021/acs.jafc.3c01634] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
The last new herbicidal modes-of-action with commercial significance were introduced to the marketplace multiple decades ago. Serious weed resistance to most herbicidal classes have since emerged with widespread use. Aryl pyrrolidinone anilides represent an entirely new mode-of-action class of herbicides that interfere with de novo pyrimidine biosynthesis in plants via inhibition of dihydroorotate dehydrogenase. The chemical lead for this new herbicide class discovery was identified from high-volume sourced greenhouse screening that required structural reassignment of the hit molecule followed by an extensive synthetic optimization effort. With excellent grass weed control and pronounced safety on rice, the selected commercial development candidate has a proposed common name of tetflupyrolimet and represents the first member of the new HRAC (Herbicide Resistance Action Committee) Group 28. This paper describes the discovery path to tetflupyrolimet with an added focus on the bioisosteric modifications pursued in optimization, including replacements of the lactam core itself.
Collapse
Affiliation(s)
- Thomas P Selby
- FMC Corporation, Stine Research Center, 1090 Elkton Road, Newark, Delaware 19711, USA
| | - Andrew D Satterfield
- FMC Corporation, Stine Research Center, 1090 Elkton Road, Newark, Delaware 19711, USA
| | - Atul Puri
- FMC Corporation, Stine Research Center, 1090 Elkton Road, Newark, Delaware 19711, USA
| | - Thomas M Stevenson
- FMC Corporation, Stine Research Center, 1090 Elkton Road, Newark, Delaware 19711, USA
| | - D Andrew Travis
- FMC Corporation, Stine Research Center, 1090 Elkton Road, Newark, Delaware 19711, USA
| | - Matthew J Campbell
- FMC Corporation, Stine Research Center, 1090 Elkton Road, Newark, Delaware 19711, USA
| | - Andrew E Taggi
- FMC Corporation, Stine Research Center, 1090 Elkton Road, Newark, Delaware 19711, USA
| | - Kenneth A Hughes
- FMC Corporation, Stine Research Center, 1090 Elkton Road, Newark, Delaware 19711, USA
| | - James Bereznak
- FMC Corporation, Stine Research Center, 1090 Elkton Road, Newark, Delaware 19711, USA
| |
Collapse
|
19
|
Takano HK, Benko ZL, Zielinski MM, Hamza A, Kalnmals CA, Roth JJ, Bravo-Altamirano K, Siddall T, Satchivi N, Church JB, Riar DS. Discovery and Mode-of-Action Characterization of a New Class of Acetolactate Synthase-Inhibiting Herbicides. J Agric Food Chem 2023; 71:18227-18238. [PMID: 37567224 DOI: 10.1021/acs.jafc.3c03858] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/13/2023]
Abstract
Herbicides are effective tools to manage weeds and enable food production and sustainable agriculture. Corteva Agriscience R&D has recently discovered new diphenyl-ether compounds displaying excellent postemergent efficacy on important weed species along with corn safety. Here, we describe the chemistry, biology, biochemistry, and computational modeling research that led to the discovery and elucidation of the primary mode of action for these compounds. The target protein was found to be acetolactate synthase (ALS), a key enzyme in the biosynthesis of branched chain amino acids (valine, leucine, and isoleucine). While weed resistance evolution to ALS herbicides is widespread, the molecular interaction of the diphenyl-ether compounds at the active site of the ALS enzyme differs significantly from that of some commercial ALS inhibitors. The unique biochemical profile of these molecules along with their excellent herbicidal activity and corn selectivity make them a noteworthy development in the pursuit of novel, safe, and sustainable weed control solutions.
Collapse
Affiliation(s)
- Hudson K Takano
- Mode of Action and Resistance Management Center of Expertise, Integrated Biology and Field Sciences, Crop Protection Discovery and Development, Corteva Agriscience, 9330 Zionsville Rd., Indianapolis, Indiana 46268, United States
| | - Zoltan L Benko
- Discovery Chemistry, Small Molecule Discovery and Development, Crop Protection Discovery and Development, Corteva Agriscience, 9330 Zionsville Rd., Indianapolis, Indiana 46268, United States
| | - Moriah M Zielinski
- Mode of Action and Resistance Management Center of Expertise, Integrated Biology and Field Sciences, Crop Protection Discovery and Development, Corteva Agriscience, 9330 Zionsville Rd., Indianapolis, Indiana 46268, United States
| | - Adel Hamza
- Discovery Chemistry, Small Molecule Discovery and Development, Crop Protection Discovery and Development, Corteva Agriscience, 9330 Zionsville Rd., Indianapolis, Indiana 46268, United States
| | - Christopher A Kalnmals
- Discovery Chemistry, Small Molecule Discovery and Development, Crop Protection Discovery and Development, Corteva Agriscience, 9330 Zionsville Rd., Indianapolis, Indiana 46268, United States
| | - Joshua J Roth
- Discovery Chemistry, Small Molecule Discovery and Development, Crop Protection Discovery and Development, Corteva Agriscience, 9330 Zionsville Rd., Indianapolis, Indiana 46268, United States
| | - Karla Bravo-Altamirano
- Discovery Chemistry, Small Molecule Discovery and Development, Crop Protection Discovery and Development, Corteva Agriscience, 9330 Zionsville Rd., Indianapolis, Indiana 46268, United States
| | - Thomas Siddall
- Discovery Chemistry, Small Molecule Discovery and Development, Crop Protection Discovery and Development, Corteva Agriscience, 9330 Zionsville Rd., Indianapolis, Indiana 46268, United States
| | - Norbert Satchivi
- Herbicide Discovery Biology, Integrated Biology and Field Sciences, Crop Protection Discovery and Development, Corteva Agriscience, 9330 Zionsville Rd., Indianapolis, Indiana 46268, United States
| | - Jeffrey B Church
- Herbicide Discovery Biology, Integrated Biology and Field Sciences, Crop Protection Discovery and Development, Corteva Agriscience, 9330 Zionsville Rd., Indianapolis, Indiana 46268, United States
| | - Dilpreet S Riar
- Herbicide Discovery Biology, Integrated Biology and Field Sciences, Crop Protection Discovery and Development, Corteva Agriscience, 9330 Zionsville Rd., Indianapolis, Indiana 46268, United States
| |
Collapse
|
20
|
Kalnmals CA, Benko ZL, Hamza A, Bravo-Altamirano K, Siddall TL, Zielinski M, Takano HK, Riar DS, Satchivi NM, Roth JJ, Church JB. A New Class of Diaryl Ether Herbicides: Structure-Activity Relationship Studies Enabled by a Rapid Scaffold Hopping Approach. J Agric Food Chem 2023; 71:18171-18187. [PMID: 37350671 DOI: 10.1021/acs.jafc.3c01285] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/24/2023]
Abstract
We report on the development of a novel class of diaryl ether herbicides. After the discovery of a phenoxybenzoic acid with modest herbicidal activity, optimization led to several molecules with improved control of broadleaf and grass weeds. To facilitate this process, we first employed a three-step combinatorial approach, then pivoted to a one-step Ullmann-type coupling that provided faster access to new analogs. After determining that the primary target site of our benchmark diaryl ethers was acetolactate synthase (ALS), we further leveraged this copper-catalyzed methodology to conduct a scaffold hopping campaign in the hope of uncovering an additional mode of action with fewer documented cases of resistance. Our comprehensive and systematic investigation revealed that while the herbicidal activity of this area seems to be exclusively linked to ALS inhibition, our molecules represent a structurally distinct class of Group 2 herbicides. The structure-activity relationships that led us to this conclusion are described herein.
Collapse
Affiliation(s)
- Christopher A Kalnmals
- Discovery Chemistry, Small Molecule Discovery and Development, Corteva Agriscience, Indianapolis, Indiana 46268, United States
| | - Zoltan L Benko
- Discovery Chemistry, Small Molecule Discovery and Development, Corteva Agriscience, Indianapolis, Indiana 46268, United States
| | - Adel Hamza
- Discovery Chemistry, Small Molecule Discovery and Development, Corteva Agriscience, Indianapolis, Indiana 46268, United States
| | - Karla Bravo-Altamirano
- Discovery Chemistry, Small Molecule Discovery and Development, Corteva Agriscience, Indianapolis, Indiana 46268, United States
| | - Thomas L Siddall
- Discovery Chemistry, Small Molecule Discovery and Development, Corteva Agriscience, Indianapolis, Indiana 46268, United States
| | - Moriah Zielinski
- Mode of Action and Resistance Management Center of Expertise, Integrated Biology and Field Sciences, Corteva Agriscience, Indianapolis, Indiana 46268, United States
| | - Hudson K Takano
- Mode of Action and Resistance Management Center of Expertise, Integrated Biology and Field Sciences, Corteva Agriscience, Indianapolis, Indiana 46268, United States
| | - Dilpreet S Riar
- Herbicide Biology, Integrated Biology and Field Sciences, Corteva Agriscience, Indianapolis, Indiana 46268, United States
| | - Norbert M Satchivi
- Herbicide Biology, Integrated Biology and Field Sciences, Corteva Agriscience, Indianapolis, Indiana 46268, United States
| | - Joshua J Roth
- Discovery Chemistry, Small Molecule Discovery and Development, Corteva Agriscience, Indianapolis, Indiana 46268, United States
| | - Jeffrey B Church
- Herbicide Biology, Integrated Biology and Field Sciences, Corteva Agriscience, Indianapolis, Indiana 46268, United States
| |
Collapse
|
21
|
Alnafta N, Beffa R, Bojack G, Bollenbach-Wahl B, Brant NZ, Dörnbrack C, Dorn N, Freigang J, Gatzweiler E, Getachew R, Hartfiel C, Heinemann I, Helmke H, Hohmann S, Jakobi H, Lange G, Lümmen P, Willms L, Frackenpohl J. Designing New Protoporphyrinogen Oxidase-Inhibitors Carrying Potential Side Chain Isosteres to Enhance Crop Safety and Spectrum of Activity. J Agric Food Chem 2023; 71:18270-18284. [PMID: 37269295 DOI: 10.1021/acs.jafc.3c01420] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
There are several methods to control weeds, which impose particular challenges for farmers in all parts of the world, although applying small molecular compounds still remains the most efficient technology to date. However, plants can evolve to become resistant toward active ingredients which is also the case for protoporphyrinogen oxidase (PPO) inhibitors, a class of highly effective herbicides in use for more than 50 years. Hence, it is essential to continuously discover and develop new herbicidal PPO inhibitors with enhanced intrinsic activity, an improved resistance profile, enhanced crop safety, favorable physicochemical properties, and a clean toxicological profile. By modifying structural key features from known PPO inhibitors such as tiafenacil, inspired by isostere and mix&match concepts in combination with modeling investigations based on a wild-type Amaranthus crystal structure, we have found new promising lead structures showing strong activity in vitro and in vivo against several notorious dicotyledon and monocotyledon weeds with emerging resistance (e.g., Amaranthus palmeri, Amaranthus tuberculatus, Lolium rigidum, and Alopecurus myosuroides). While several phenyl uracils carrying an isoxazoline motif in their thio-linked side chain showed promising resistance-breaking potential against different Amaranthus species, introducing a thioacrylamide side chain afforded outstanding efficacy against resistant grass weeds.
Collapse
Affiliation(s)
- Neanne Alnafta
- Research and Development, Weed Control Chemistry, Crop Science Division, Bayer AG, Industriepark Höchst, 65926 Frankfurt am Main, Germany
| | - Roland Beffa
- Research and Development, Weed Control Chemistry, Crop Science Division, Bayer AG, Industriepark Höchst, 65926 Frankfurt am Main, Germany
| | - Guido Bojack
- Research and Development, Weed Control Chemistry, Crop Science Division, Bayer AG, Industriepark Höchst, 65926 Frankfurt am Main, Germany
| | - Birgit Bollenbach-Wahl
- Research and Development, Weed Control Chemistry, Crop Science Division, Bayer AG, Industriepark Höchst, 65926 Frankfurt am Main, Germany
| | - Nicola Z Brant
- Research and Development, Weed Control Chemistry, Crop Science Division, Bayer AG, Industriepark Höchst, 65926 Frankfurt am Main, Germany
| | - Christine Dörnbrack
- Research and Development, Weed Control Chemistry, Crop Science Division, Bayer AG, Industriepark Höchst, 65926 Frankfurt am Main, Germany
| | - Nicole Dorn
- Research and Development, Weed Control Chemistry, Crop Science Division, Bayer AG, Industriepark Höchst, 65926 Frankfurt am Main, Germany
| | - Jörg Freigang
- Research and Development, Weed Control Chemistry, Crop Science Division, Bayer AG, Industriepark Höchst, 65926 Frankfurt am Main, Germany
| | - Elmar Gatzweiler
- Research and Development, Weed Control Chemistry, Crop Science Division, Bayer AG, Industriepark Höchst, 65926 Frankfurt am Main, Germany
| | - Rahel Getachew
- Research and Development, Weed Control Chemistry, Crop Science Division, Bayer AG, Industriepark Höchst, 65926 Frankfurt am Main, Germany
| | - Claudia Hartfiel
- Research and Development, Weed Control Chemistry, Crop Science Division, Bayer AG, Industriepark Höchst, 65926 Frankfurt am Main, Germany
| | - Ines Heinemann
- Research and Development, Weed Control Chemistry, Crop Science Division, Bayer AG, Industriepark Höchst, 65926 Frankfurt am Main, Germany
| | - Hendrik Helmke
- Research and Development, Weed Control Chemistry, Crop Science Division, Bayer AG, Industriepark Höchst, 65926 Frankfurt am Main, Germany
| | - Sabine Hohmann
- Research and Development, Weed Control Chemistry, Crop Science Division, Bayer AG, Industriepark Höchst, 65926 Frankfurt am Main, Germany
| | - Harald Jakobi
- Research and Development, Weed Control Chemistry, Crop Science Division, Bayer AG, Industriepark Höchst, 65926 Frankfurt am Main, Germany
| | - Gudrun Lange
- Research and Development, Weed Control Chemistry, Crop Science Division, Bayer AG, Industriepark Höchst, 65926 Frankfurt am Main, Germany
| | - Peter Lümmen
- Research and Development, Weed Control Chemistry, Crop Science Division, Bayer AG, Industriepark Höchst, 65926 Frankfurt am Main, Germany
| | - Lothar Willms
- Research and Development, Weed Control Chemistry, Crop Science Division, Bayer AG, Industriepark Höchst, 65926 Frankfurt am Main, Germany
| | - Jens Frackenpohl
- Research and Development, Weed Control Chemistry, Crop Science Division, Bayer AG, Industriepark Höchst, 65926 Frankfurt am Main, Germany
| |
Collapse
|
22
|
Niu Z, Rehman T, Young J, Johnson WG, Yokoo T, Young B, Jin J. Hyperspectral Analysis for Discriminating Herbicide Site of Action: A Novel Approach for Accelerating Herbicide Research. Sensors (Basel) 2023; 23:9300. [PMID: 38067672 PMCID: PMC10708448 DOI: 10.3390/s23239300] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/23/2023] [Revised: 11/08/2023] [Accepted: 11/17/2023] [Indexed: 12/18/2023]
Abstract
In agricultural weed management, herbicides are indispensable, yet innovation in their modes of action (MOA)-the general mechanisms affecting plant processes-has slowed. A finer classification within MOA is the site of action (SOA), the specific biochemical pathway in plants targeted by herbicides. The primary objectives of this study were to evaluate the efficacy of hyperspectral imaging in the early detection of herbicide stress and to assess its potential in accelerating the herbicide development process by identifying unique herbicide sites of action (SOA). Employing a novel SOA classification method, eight herbicides with unique SOAs were examined via an automated, high-throughput imaging system equipped with a conveyor-based plant transportation at Purdue University. This is one of the earliest trials to test hyperspectral imaging on a large number of herbicides, and the study aimed to explore the earliest herbicide stress detection/classification date and accelerate the speed of herbicide development. The final models, trained on a dataset with nine treatments with 320 samples in two rounds, achieved an overall accuracy of 81.5% 1 day after treatment. With the high-precision models and rapid screening of numerous compounds in only 7 days, the study results suggest that hyperspectral technology combined with machine learning can contribute to the discovery of new herbicide MOA and help address the challenges associated with herbicide resistance. Although no public research to date has used hyperspectral technology to classify herbicide SOA, the successful evaluation of herbicide damage to crops provides hope to accelerate the progress of herbicide development.
Collapse
Affiliation(s)
- Zhongzhong Niu
- Department of Agricultural and Biological Engineering, Purdue University, West Lafayette, IN 47907, USA; (Z.N.); (T.Y.)
| | - Tanzeel Rehman
- Department of Biosystems Engineering, Auburn University, Auburn, AL 36849, USA;
| | - Julie Young
- Department of Botany and Plant Pathology, Purdue University, West Lafayette, IN 47907, USA; (J.Y.); (W.G.J.); (B.Y.)
| | - William G. Johnson
- Department of Botany and Plant Pathology, Purdue University, West Lafayette, IN 47907, USA; (J.Y.); (W.G.J.); (B.Y.)
| | - Takayuki Yokoo
- Department of Agricultural and Biological Engineering, Purdue University, West Lafayette, IN 47907, USA; (Z.N.); (T.Y.)
- Health and Crop Sciences Research Laboratory, Sumitomo Chemical Co., Ltd., Takarazuka 665-8555, Hyogo, Japan
| | - Bryan Young
- Department of Botany and Plant Pathology, Purdue University, West Lafayette, IN 47907, USA; (J.Y.); (W.G.J.); (B.Y.)
| | - Jian Jin
- Department of Agricultural and Biological Engineering, Purdue University, West Lafayette, IN 47907, USA; (Z.N.); (T.Y.)
| |
Collapse
|
23
|
Qasem JR. Chemical control and herbicide resistance of hairy fleabane (Erigeron bonariensis L.) in Jordan. PLoS One 2023; 18:e0263154. [PMID: 37824594 PMCID: PMC10569565 DOI: 10.1371/journal.pone.0263154] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2022] [Accepted: 08/08/2023] [Indexed: 10/14/2023] Open
Abstract
The effect of paraquat, oxadiazon and oxyfluorfen herbicides was tested on two populations of hairy fleabane (Erigeron bonariensis L.), collected from a date palm orchard at Tal al-Ramil (Central Jordan Valley) and al-Twal (Northern Jordan Valley) sites using the recommended rates (0.5, 1.25 and 0.792kg a.i ha-1 for each herbicide, respectively) and 10-fold (5, 12.50 and 7.92 kg a.i. ha-1, respectively) under glasshouse conditions. Results showed that the date palm weed population was resistant to the three herbicides at both application rates and al-Twal site population was highly susceptible. Two field experiments were conducted to evaluate the effectiveness of 12 herbicides in controlling the weed in the date palm orchard during the spring of 2017, revealed that E. bonariensis resists paraquat (0.5, 1.0 and 1.5 kg a.i. ha-1), oxadiazon (1.25 kg a.i. ha-1) and oxyfluorfen (0.792 kg a.i. ha-1) herbicides. None of the three herbicides was effective against the weed and treated plants continued to grow normally similar to those of untreated control. Ten-fold higher rates of these herbicides failed to control the weed. The effect of other tested herbicides was variable with bromoxynil plus MCPA (buctril®M), 2,4-D- iso-octyl ester, glyphosate, glyphosate trimesium and triclopyr being the most effective and completely controlling the weed at recommended rates of application. It is concluded that the tested populations of E. bonariensis developed resistance to paraquat, oxadiazon and oxyfluorfen but control of the weed was possible using other herbicides with different mechanisms of action. Herbicide rotation or other nonchemical weed control methods have been suggested to prevent or reduce the buildup and spread of resistant populations of this weed. These results represent the first report of herbicide resistance of E. bonariensis in Jordan.
Collapse
Affiliation(s)
- Jamal R. Qasem
- Plant Protection Department, Faculty of Agriculture, University of Jordan, Amman, Jordan
| |
Collapse
|
24
|
Ethridge SR, Chandra S, Locke AM, Everman WJ, Jordan DL, Owen MDK, Leon RG. Changes in the herbicide sensitivity and competitive ability of Abutilon theophrasti over 28 years: Implications for hormesis and weed evolution. Pest Manag Sci 2023; 79:4048-4056. [PMID: 37309719 DOI: 10.1002/ps.7604] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/06/2023] [Revised: 06/02/2023] [Accepted: 06/13/2023] [Indexed: 06/14/2023]
Abstract
BACKGROUND The potential of weed species to respond to selection forces affecting the evolution of weedy traits such as competitive ability is poorly understood. This research characterized evolutionary growth changes in a single Abutilon theophrasti Medik. population comparing multiple generations collected from 1988 to 2016. A competition study was performed to understand changes in competitive ability, and a herbicide dose-response study was carried out to assess changes in sensitivity to acetolactate synthase-inhibiting herbicides and glyphosate over time. RESULTS When grown in monoculture, A. theophrasti biomass production per plant increased steadily across year-lines while leaf number decreased. In replacement experiments, A. theophrasti plants from newer year-lines were more competitive and produced more biomass and leaf area than the oldest year-line. No clear differences in sensitivity to imazamox were observed among year-lines. However, starting in 1995, this A. theophrasti population exhibited a progressive increase in growth in response to a sublethal dose of glyphosate (52 g a.e. ha-1 ), with the 2009 and 2016 year-lines having more than 50% higher biomass than the nontreated control. CONCLUSION This study demonstrates that weeds can rapidly evolve increased competitive ability. Furthermore, the results indicate the possibility of changes in glyphosate hormesis over time. These results highlight the importance of the role that rapid (i.e., subdecadal) evolution of growth traits might have on the sustainability of weed management strategies. © 2023 The Authors. Pest Management Science published by John Wiley & Sons Ltd on behalf of Society of Chemical Industry.
Collapse
Affiliation(s)
- Sandra R Ethridge
- Department of Crop and Soil Sciences, North Carolina State University, Raleigh, North Carolina, USA
| | - Saket Chandra
- Department of Crop and Soil Sciences, North Carolina State University, Raleigh, North Carolina, USA
| | - Anna M Locke
- Department of Crop and Soil Sciences, North Carolina State University, Raleigh, North Carolina, USA
- Soybean & Nitrogen Fixation Research, USDA Agricultural Research Service, Raleigh, North Carolina, USA
| | - Wesley J Everman
- Department of Crop and Soil Sciences, North Carolina State University, Raleigh, North Carolina, USA
| | - David L Jordan
- Department of Crop and Soil Sciences, North Carolina State University, Raleigh, North Carolina, USA
| | | | - Ramon G Leon
- Department of Crop and Soil Sciences, North Carolina State University, Raleigh, North Carolina, USA
| |
Collapse
|
25
|
Claus A, Roncatto E, Barroso AAM, May De Mio LL. Herbicides reduce the severity and sporulation of Phakopsora pachyrhizi in soybean with triple herbicide resistance. Pest Manag Sci 2023; 79:3749-3756. [PMID: 37198351 DOI: 10.1002/ps.7557] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/22/2022] [Revised: 05/12/2023] [Accepted: 05/15/2023] [Indexed: 05/19/2023]
Abstract
BACKGROUND Transgenic event DAS44406-6 (E3) makes soybeans that are herbicide [glyphosate (Gly), 2,4-dichlorophenoxyacetic acid (2,4-D) and glufosinate] and caterpillar resistant. The E3 soybean was commercially released for the 2021/2022 harvest in Brazil. We conducted this study to test whether Gly and 2,4-D applied alone and in a commercial mixture affect Asian soybean rust (ASR). Assays were conducted in detached leaves and in vivo, in a controlled environment using the herbicides Gly, 2,4-D and Gly + 2,4-D, and pathogen inoculation. Disease severity and spore production were evaluated. RESULTS Only the herbicides Gly and Gly + 2,4-D inhibited ASR in detached leaves and in vivo. When applied preventively and curatively in vivo, these herbicides reduced the disease severity and spore production of the fungus. In vivo, inhibition of disease severity reached 87% for Gly + 2,4-D and 42% for Gly. A synergistic effect was observed with the commercial Gly + 2,4-D mixture. Application of 2,4-D alone in the in vivo assays did not reduce or increase disease severity. Gly and Gly + 2,4-D act residually in inhibiting the disease. Growing E3 soybeans may combine weed and caterpillar management benefits with ASR inhibition. CONCLUSION Application of Gly and Gly + 2,4-D herbicides in resistant E3 soybean shows inhibitory activity for ASR. © 2023 Society of Chemical Industry.
Collapse
Affiliation(s)
- Alexandre Claus
- Plant Science and Plant Health Department, Federal University of Paraná (UFPR) ZIP 80035 050, Curitiba, Brazil
| | - Eduardo Roncatto
- Plant Science and Plant Health Department, Federal University of Paraná (UFPR) ZIP 80035 050, Curitiba, Brazil
| | | | - Louise Larissa May De Mio
- Plant Science and Plant Health Department, Federal University of Paraná (UFPR) ZIP 80035 050, Curitiba, Brazil
| |
Collapse
|
26
|
Barco-Antoñanzas M, Font-Farre M, Eceiza MV, Gil-Monreal M, van der Hoorn RAL, Royuela M, Zabalza A. Cysteine proteases are activated in sensitive Amaranthus palmeri populations upon treatment with herbicides inhibiting amino acid biosynthesis. Physiol Plant 2023; 175:e13993. [PMID: 37882288 DOI: 10.1111/ppl.13993] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/28/2023] [Revised: 07/18/2023] [Accepted: 07/24/2023] [Indexed: 10/27/2023]
Abstract
The herbicides glyphosate and pyrithiobac inhibit the enzyme 5-enolpyruvylshikimate-3-phosphate synthase (EPSPS) in the aromatic amino acid biosynthetic pathway and acetolactate synthase (ALS) in the branched-chain amino acid biosynthetic pathway, respectively. Here we characterise the protease activity profiles of a sensitive (S), a glyphosate-resistant (GR) and a multiple-resistant (MR) population of Amaranthus palmeri in response to glyphosate and pyrithiobac. Amino acid accumulation and cysteine protease activities were induced with both herbicides in the S population and with pyrithiobac in the GR population, suggesting that the increase in cysteine proteases is responsible for the increased degradation of the available proteins and the observed increase in free amino acids. Herbicides did not induce any changes in the proteolytic activities in the populations with target-site resistance, indicating that this effect was only induced in sensitive plants.
Collapse
Affiliation(s)
- Maria Barco-Antoñanzas
- Institute for Multidisciplinary Research in Applied Biology (IMAB), Universidad Pública de Navarra (UPNA), Campus de Arrosadía, Pamplona, Spain
| | - Maria Font-Farre
- The Plant Chemetics Laboratory, Department of Biology Sciences, University of Oxford, Oxford, UK
| | - Mikel V Eceiza
- Institute for Multidisciplinary Research in Applied Biology (IMAB), Universidad Pública de Navarra (UPNA), Campus de Arrosadía, Pamplona, Spain
| | - Miriam Gil-Monreal
- Institute for Multidisciplinary Research in Applied Biology (IMAB), Universidad Pública de Navarra (UPNA), Campus de Arrosadía, Pamplona, Spain
| | - Renier A L van der Hoorn
- The Plant Chemetics Laboratory, Department of Biology Sciences, University of Oxford, Oxford, UK
| | - Mercedes Royuela
- Institute for Multidisciplinary Research in Applied Biology (IMAB), Universidad Pública de Navarra (UPNA), Campus de Arrosadía, Pamplona, Spain
| | - Ana Zabalza
- Institute for Multidisciplinary Research in Applied Biology (IMAB), Universidad Pública de Navarra (UPNA), Campus de Arrosadía, Pamplona, Spain
| |
Collapse
|
27
|
Gawlik-Dziki U, Wrzesińska-Krupa B, Nowak R, Pietrzak W, Zyprych-Walczak J, Obrępalska-Stęplowska A. Herbicide resistance status impacts the profile of non-anthocyanin polyphenolics and some phytomedical properties of edible cornflower (Centaurea cyanus L.) flowers. Sci Rep 2023; 13:11538. [PMID: 37460793 DOI: 10.1038/s41598-023-38520-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2023] [Accepted: 07/10/2023] [Indexed: 07/20/2023] Open
Abstract
To ensure sufficient food supply worldwide, plants are treated with pesticides to provide protection against pathogens and pests. Herbicides are the most commonly utilised pesticides, used to reduce the growth of weeds. However, their long-term use has resulted in the emergence of herbicide-resistant biotypes in many weed species. Cornflower (Centaurea cyanus L., Asteraceae) is one of these plants, whose biotypes resistant to herbicides from the group of acetolactate synthase (ALS) inhibitors have begun to emerge in recent years. Some plants, although undesirable in crops and considered as weeds, are of great importance in phytomedicine and food production, and characterised by a high content of health-promoting substances, including antioxidants. Our study aimed to investigate how the acquisition of herbicide resistance affects the health-promoting properties of plants on the example of cornflower, as well as how they are affected by herbicide treatment. To this end, we analysed non-anthocyanin polyphenols and antioxidant capacity in flowers of C. cyanus from herbicide-resistant and susceptible biotypes. Our results indicated significant compositional changes associated with an increase in the content of substances and activities that have health-promoting properties. High antioxidant activity and higher total phenolic and flavonoid compounds as well as reducing power were observed in resistant biotypes. The latter one increased additionally after herbicide treatment which might also suggest their role in the resistance acquisition mechanism. Overall, these results show that the herbicide resistance development, although unfavourable to crop production, may paradoxically have very positive effects for medicinal plants such as cornflower.
Collapse
Affiliation(s)
- Urszula Gawlik-Dziki
- Department of Biochemistry and Food Chemistry, University of Life Sciences, 8 Skromna St, 20-704, Lublin, Poland.
| | - Barbara Wrzesińska-Krupa
- Department of Molecular Biology and Biotechnology, Institute of Plant Protection - National Research Institute, 20 Wegorka St, 60-318, Poznań, Poland
| | - Renata Nowak
- Department of Pharmaceutical Botany, Medical University of Lublin, Chodźki 1 Str., 20-093, Lublin, Poland
| | - Wioletta Pietrzak
- Department of Pharmaceutical Botany, Medical University of Lublin, Chodźki 1 Str., 20-093, Lublin, Poland
| | - Joanna Zyprych-Walczak
- Department of Mathematical and Statistical Methods, Poznan University of Life Sciences, 28 Wojska Polskiego St, 60-637, Poznań, Poland
| | - Aleksandra Obrępalska-Stęplowska
- Department of Molecular Biology and Biotechnology, Institute of Plant Protection - National Research Institute, 20 Wegorka St, 60-318, Poznań, Poland.
| |
Collapse
|
28
|
Rani P, Rajak BK, Singh DV. Physicochemical parameters for design and development of lead herbicide molecules: Is 'Lipinski's rule of 5' appropriate for herbicide discovery? Pest Manag Sci 2023; 79:1931-1943. [PMID: 36656285 DOI: 10.1002/ps.7367] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/04/2022] [Revised: 12/24/2022] [Accepted: 01/19/2023] [Indexed: 06/17/2023]
Abstract
BACKGROUND Herbicide use has been a great add-on in agriculture, aiding weed management in crop fields, thereby escalating crop production. However, the development of resistance in weeds against the existing herbicides is a setback. The development of herbicide resistance has compelled the agrochemical industries to replace existing herbicides with novel agrochemicals. Developing new herbicide molecules through traditional methods is time-consuming and cost-prohibitive. The use of high-throughput virtual screening (HTVS) through physicochemical properties, de novo design and combinatorial design of molecules with cutting-edge computational methods is an alternative to the traditional techniques in lead molecule discovery. The lack of optimal physicochemical criteria for screening herbicide-like molecules has become a hindrance in the process. RESULTS In this study, physicochemical parameters [molecular weight, aromatic atoms, rotatable bonds, hydrogen-bonding capacity, topological polar surface area (TPSA), polarity and solubility] of known herbicide molecules have been studied and evaluated, and optimal criteria have been proposed for target-specific herbicides. Properties including molecular weight and hydrogen (H)-bond acceptor atoms tend to have higher values, but the range of H-bond donor atoms is relatively lower. These are distinguishable characteristics in herbicides when compared with oral drugs. Significant variations in optimal physicochemical parameters between herbicides of different groups (targeting weeds with different modes of action) have been observed. CONCLUSION The proposed parameters for respective target sites could be used as filters for in silico screening, designing and developing of target-specific lead herbicide molecules. © 2023 Society of Chemical Industry.
Collapse
Affiliation(s)
- Priyanka Rani
- Molecular Modelling and Computer-Aided Drug Discovery Laboratory, Department of Bioinformatics, Central University of South Bihar, School of Earth Biological and Environmental Sciences, Gaya, India
| | - Bikash Kumar Rajak
- Molecular Modelling and Computer-Aided Drug Discovery Laboratory, Department of Bioinformatics, Central University of South Bihar, School of Earth Biological and Environmental Sciences, Gaya, India
| | - Durg Vijay Singh
- Molecular Modelling and Computer-Aided Drug Discovery Laboratory, Department of Bioinformatics, Central University of South Bihar, School of Earth Biological and Environmental Sciences, Gaya, India
| |
Collapse
|
29
|
Cheng Y, Lonhienne T, Garcia MD, Williams CM, Schenk G, Guddat LW. Crystal Structure of the Commercial Herbicide, Amidosulfuron, in Complex with Arabidopsis thaliana Acetohydroxyacid Synthase. J Agric Food Chem 2023; 71:5117-5126. [PMID: 36943718 DOI: 10.1021/acs.jafc.2c08528] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
Amidosulfuron (AS) is from the commercial sulfonylurea herbicide family. It is highly effective against dicot broad-leaf weeds. This herbicide targets acetohydroxyacid synthase (AHAS), the first enzyme in the branched chain amino acid biosynthesis pathway. Here, we have determined the crystal structure of AS in complex with wildtype Arabidopsis thaliana AHAS (AtAHAS) and with the resistance mutant, S653T. In both structures, the cofactor, ThDP, is modified to a peracetate adduct, consistent with time-dependent accumulative inhibition. Compared to other AHAS-inhibiting herbicides of the sulfonylurea family, AS lacks a second aromatic ring. The replacement is an aryl sulfonyl group with a reduced number of interactions with the enzyme and relatively low affinity (Ki = 4.2 μM vs low nM when two heteroaromatic rings are present). This study shows that effective herbicides can have a relatively high Ki for plant AHAS but can still be a potent herbicide provided accumulative inhibition also occurs.
Collapse
Affiliation(s)
- Yan Cheng
- School of Chemistry and Molecular Biosciences, The University of Queensland, Brisbane 4072, Australia
| | - Thierry Lonhienne
- School of Chemistry and Molecular Biosciences, The University of Queensland, Brisbane 4072, Australia
| | - Mario D Garcia
- School of Chemistry and Molecular Biosciences, The University of Queensland, Brisbane 4072, Australia
| | - Craig M Williams
- School of Chemistry and Molecular Biosciences, The University of Queensland, Brisbane 4072, Australia
| | - Gerard Schenk
- School of Chemistry and Molecular Biosciences, The University of Queensland, Brisbane 4072, Australia
| | - Luke W Guddat
- School of Chemistry and Molecular Biosciences, The University of Queensland, Brisbane 4072, Australia
| |
Collapse
|
30
|
Kouame KB, Butts TR, Werle R, Johnson WG. Impact of volatility reduction agents on dicamba and glyphosate spray solution pH, droplet dynamics, and weed control. Pest Manag Sci 2023; 79:857-869. [PMID: 36305819 PMCID: PMC10100389 DOI: 10.1002/ps.7258] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/15/2022] [Revised: 09/29/2022] [Accepted: 10/28/2022] [Indexed: 06/16/2023]
Abstract
BACKGROUND Regulations in 2021 required the addition of a volatility reduction agent (VRA) to dicamba spray mixtures for postemergence weed control. Understanding the impact of VRAs on weed control, droplet dynamics, and spray pH is essential. RESULTS Adding glyphosate to dicamba decreased the solution pH by 0.63 to 1.85 units. Across locations, potassium carbonate increased the tank-mixture pH by 0.85 to 1.65 units while potassium acetate raised the pH by 0.46 to 0.53 units. Glyphosate and dicamba in tank-mixture reduced Palmer amaranth control by 14 percentage points compared to dicamba alone and decreased barnyardgrass control by 12 percentage points compared to glyphosate alone 4 weeks after application (WAA). VRAs resulted in a 5-percentage point reduction in barnyardgrass control 4 WAA. Common ragweed, common lambsquarters, and giant ragweed control were unaffected by herbicide solution 4 WAA. Dicamba alone produced a larger average droplet size and had the fewest driftable fines (% volume < 200 μm). Potassium acetate produced a larger droplet size than potassium carbonate for Dv0.1 and Dv0.5 . The addition of glyphosate to dicamba decreased droplet size from the entire spray droplet spectrum (Dv0.1 , Dv0.5 , Dv0.9 ). CONCLUSION A reduction in spray pH, droplet size, and weed control was observed from mixing dicamba and glyphosate. It may be advisable to avoid tank-mixtures of these herbicides and instead, apply them sequentially to maximize effectiveness. VRAs differed in their impacts on spray solution pH and droplet dynamics, but resulted in a minimal negative to no impact on weed control. © 2022 The Authors. Pest Management Science published by John Wiley & Sons Ltd on behalf of Society of Chemical Industry.
Collapse
Affiliation(s)
- Koffi Badou‐Jeremie Kouame
- Postdoctoral Research Fellow, Department of Crop, Soil, and Environmental SciencesUniversity of Arkansas System Division of AgricultureLonokeARUSA
| | - Thomas R. Butts
- Extension Weed Scientist, Department of Crop, Soil, and Environmental SciencesUniversity of Arkansas System Division of AgricultureLonokeARUSA
| | - Rodrigo Werle
- Extension Weed Scientist, Department of AgronomyUniversity of Wisconsin‐MadisonMadisonWIUSA
| | - William G. Johnson
- Weed Scientist, Department of Botany & Plant PathologyPurdue UniversityWest LafayetteINUSA
| |
Collapse
|
31
|
Li Z, Zhang X, Wang Y, Zheng Z, Zhang C, Wu T, Wu Y, Gao Y, Du F. Improved Method to Characterize Leaf Surfaces, Guide Adjuvant Selection, and Improve Glyphosate Efficacy. J Agric Food Chem 2023; 71:1348-1359. [PMID: 36629458 DOI: 10.1021/acs.jafc.2c05622] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
Glyphosate, one of the most widely used herbicides, plays an important role in controlling weeds and ensuring crop production. While using glyphosate, adjuvants are commonly added to improve its deposition on weeds and control efficacy. However, changes in weed leaf surface characteristics may reduce glyphosate penetration and contribute to evolved glyphosate resistance. Therefore, it is significant to introduce an improved method for regularizing leaf surface characterization and guide adjuvant selection to improve glyphosate efficacy. In this work, surface characteristics of typical weed leaves have been systematically investigated by 3D surface analysis and scanning electron microscopy, finally quantified by apparent surface free energy (ASFE) due to its comprehensive and quantitative evaluation of leaf surfaces. Moreover, the relationship between the weed leaf surface characteristics and the retention of glyphosate on weeds was established, further related to the control efficacy against weeds. To maximize the utilization rate of glyphosate, the types and concentrations of adjuvants should be regulated according to the ASFE of weeds. Our findings not only regularize the surface properties of weed leaves but also reveal their influencing mechanism on the deposition and biological activity of glyphosate, which provide effective guidance for the use of glyphosate.
Collapse
Affiliation(s)
- Zilu Li
- Department of Applied Chemistry, College of Science, China Agricultural University, Beijing100193, China
| | - Xingyu Zhang
- Department of Applied Chemistry, College of Science, China Agricultural University, Beijing100193, China
| | - Yue Wang
- Department of Applied Chemistry, College of Science, China Agricultural University, Beijing100193, China
| | - Zirui Zheng
- Department of Applied Chemistry, College of Science, China Agricultural University, Beijing100193, China
| | - Chenhui Zhang
- Department of Applied Chemistry, College of Science, China Agricultural University, Beijing100193, China
| | - Tianyue Wu
- Department of Applied Chemistry, College of Science, China Agricultural University, Beijing100193, China
| | - Yanling Wu
- Department of Applied Chemistry, College of Science, China Agricultural University, Beijing100193, China
| | - Yuxia Gao
- Department of Applied Chemistry, College of Science, China Agricultural University, Beijing100193, China
| | - Fengpei Du
- Department of Applied Chemistry, College of Science, China Agricultural University, Beijing100193, China
| |
Collapse
|
32
|
de Figueiredo MRA, Barnes H, Boot CM, de Figueiredo ABTB, Nissen SJ, Dayan FE, Gaines TA. Identification of a Novel 2,4-D Metabolic Detoxification Pathway in 2,4-D-Resistant Waterhemp ( Amaranthus tuberculatus). J Agric Food Chem 2022; 70:15380-15389. [PMID: 36453610 DOI: 10.1021/acs.jafc.2c05908] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
A 2,4-dichlorophenoxyactic acid (2,4-D)-resistant population of Amaranthus tuberculatus (common waterhemp) from Nebraska, USA, was previously found to have rapid metabolic detoxification of the synthetic auxin herbicide 2,4-D. We purified the main 2,4-D metabolites from resistant and susceptible plants, solved their structures by nuclear magnetic resonance (NMR) and high-resolution mass spectrometry (HRMS), and synthesized the metabolites to determine their in planta toxicity. Susceptible plants conjugated 2,4-D to aspartate to form 2,4-D-aspartic acid (2,4-D-Asp), while resistant plants had a unique metabolic profile where 2,4-D was hydroxylated into 5-OH-2,4-D, followed by conjugation into a sugar metabolite (2,4-D-5-O-d-glucopyranoside) and subsequent malonylation into 2,4-D-(6'-O-malonyl)-5-O-d-glucopyranoside. Toxicological studies on waterhemp and Arabidopsis thaliana confirmed that the hydroxylated metabolite lost its auxinic action and toxicity. In contrast, the 2,4-D-Asp metabolite found in susceptible plants retained some auxinic action and toxicity. These results demonstrate that 2,4-D-resistant A. tuberculatus evolved novel detoxification reactions not present in susceptible plants to rapidly metabolize 2,4-D, potentially mediated by cytochrome P450 enzymes that perform the initial 5-hydroxylation reaction. This novel mechanism is more efficient to detoxify 2,4-D and produces metabolites with lower toxicity compared to the aspartic acid conjugation found in susceptible waterhemp.
Collapse
Affiliation(s)
- Marcelo R A de Figueiredo
- Department of Agricultural Biology, Colorado State University, Fort Collins, Colorado 80523, United States
| | - Hamlin Barnes
- Department of Agricultural Biology, Colorado State University, Fort Collins, Colorado 80523, United States
| | - Claudia M Boot
- Department of Chemistry, Materials and Molecular Analysis Center, Colorado State University, Fort Collins, Colorado 80523, United States
| | | | - Scott J Nissen
- Department of Agricultural Biology, Colorado State University, Fort Collins, Colorado 80523, United States
| | - Franck E Dayan
- Department of Agricultural Biology, Colorado State University, Fort Collins, Colorado 80523, United States
| | - Todd A Gaines
- Department of Agricultural Biology, Colorado State University, Fort Collins, Colorado 80523, United States
| |
Collapse
|
33
|
Bianchini A, Dutra de Moraes PV, Domanski Jakubski J, Adami PF, Bernardi Rankrape C, Rossi P. Influence of cover crops with allelopathic potential and their reduction of herbicide use for soybean productivity. J Environ Sci Health B 2022; 57:890-896. [PMID: 36444491 DOI: 10.1080/03601234.2022.2133510] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
The allelophaty expressed by soil cover crops over weed varies according to species, quality and quantity of material produced. The purpose of this study was to evaluate the potential of cover crops and in the management of weeds and their effects on soybean yield. The experiment was laid in tri-factorial randomized block design with four replication. Factor A was cover crops (oats, forage chicory, quinoa and fallow), factor B was application of paraquat 400 g i.a ha-1, glyphosate 1200 g i.a ha-1 and mowing and factor C was one and two applications of post-emergent herbicide (glyphosate). For cover crops, the percentage of soil cover was evaluated at 53 DAE (days after emergence) of soybean. Weed species and their densities at 53 DAE of soybean were identified. At the end of the experiment, soybean yield was evaluated. The data were analyzed by the F test and comparison between means by the Tukey test (P ≤ 0.05). Oats are the best option for weed inhibition and early soybean development. Quinoa and forage chicory were slow to cover the soil, but weed inhibition occurred. There were no large variations in post-emergence herbicide applications, which made possible to reduce an application without compromising the expected result.
Collapse
Affiliation(s)
- Alexandre Bianchini
- Professor at Universidade Tecnológica Federal do Paraná, Dois VizinhosBrazil
| | | | | | | | | | - Patricia Rossi
- Professor at Universidade Tecnológica Federal do Paraná, Dois VizinhosBrazil
| |
Collapse
|
34
|
Zou Y, Cao S, Zhao B, Sun Z, Liu L, Ji M. Increase in glutathione S-transferase activity and antioxidant damage ability drive resistance to bensulfuron-methyl in Sagittaria trifolia. Plant Physiol Biochem 2022; 190:240-247. [PMID: 36148723 DOI: 10.1016/j.plaphy.2022.09.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/02/2022] [Revised: 09/06/2022] [Accepted: 09/10/2022] [Indexed: 06/16/2023]
Abstract
Weeds tend to develop resistance to herbicides with time. Understanding the resistance mechanisms evolved by weeds would help manage weed infestation. Sagittaria trifolia, a paddy weed found in the rice fields of Liaoning, China, has developed resistance to bensulfuron-methyl, causing severe yield losses in rice. This study deciphers the underlying mechanisms in terms of non-target-site resistance toward bensulfuron-methyl. We compared the ability of glutathione S-transferase (GST) mediated detoxification metabolism and reactive oxygen species (ROS) scavenging between sensitive (NHS) and resistant (NHR) populations of S. trifolia. The resistance ratio of NHR was 210; but the ratio was significantly decreased after GST-inhibitor treatment (44.9). This indicated that a GST-mediated enhancement of detoxification metabolism stimulated the development of resistance. Similarly, higher GST activity was observed in NHR; but the activity equaled that of NHS after GST-inhibitor treatment. However, treatment with the GST-inhibitor did not completely reverse bensulfuron-methyl resistance in NHR, indicating that additional factors contributed to herbicide resistance in these plants. We observed a rapid increase in H2O2 and malondialdehyde accumulation in the case of NHS after bensulfuron-methyl application, whereas those of NHR remained relatively stable, implying that NHR exhibited higher ROS-scavenging capacity under herbicide stress. Further, NHR showed higher glutathione and ascorbic acid contents and higher activities of glutathione reductase and dehydrogenase reductase, all of which contribute towards herbicide resistance in these plants. Our results indicate that GST-mediated detoxification metabolism of bensulfuron-methyl and ROS scavenging capacity contributed to the development of resistance in S. trifolia.
Collapse
Affiliation(s)
- Yize Zou
- College of Plant Protection, Shenyang Agricultural University, No. 120 Dongling Road, Shenhe District, Shenyang City, 110866, China.
| | - Shihan Cao
- College of Plant Protection, Shenyang Agricultural University, No. 120 Dongling Road, Shenhe District, Shenyang City, 110866, China.
| | - Bochui Zhao
- Institute of Cereal and Oil Crops, Hebei Academy of Agriculture and Forestry Sciences, Shijiazhuang, 050035, China.
| | - Zhonghua Sun
- College of Plant Protection, Shenyang Agricultural University, No. 120 Dongling Road, Shenhe District, Shenyang City, 110866, China.
| | - Liru Liu
- College of Plant Protection, Shenyang Agricultural University, No. 120 Dongling Road, Shenhe District, Shenyang City, 110866, China.
| | - Mingshan Ji
- College of Plant Protection, Shenyang Agricultural University, No. 120 Dongling Road, Shenhe District, Shenyang City, 110866, China.
| |
Collapse
|
35
|
Ha W, Yamaguchi T, Iwakami S, Sunohara Y, Matsumoto H. Comparison of herbicide specificity of CYP81A cytochrome P450s from rice and a multiple-herbicide resistant weed, Echinochloa phyllopogon. Pest Manag Sci 2022; 78:4207-4216. [PMID: 35705850 DOI: 10.1002/ps.7038] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/04/2022] [Revised: 06/09/2022] [Accepted: 06/15/2022] [Indexed: 06/15/2023]
Abstract
BACKGROUND CYP81A cytochrome P450s (CYP81As) play a key role in herbicide detoxification in Poaceae plants. Crop CYP81As confer natural tolerance to multiple herbicides, whereas CYP81As in weeds disrupt herbicide action. Identifying differences in CYP81A herbicide specificity between crops and weeds could provide valuable information for controlling weeds. In this study, we quantitatively compared herbicide specificity between CYP81A6 from rice (Oryza sativa) and CYP81A12 and CYP81A21 from a weed, Echinochloa phyllopogon, using transgenic Escherichia coli and Arabidopsis. RESULTS All three CYP81As metabolized the five tested herbicides and formed similar metabolites, with the highest relative activities of 400 to 580% toward bentazone compared to their activity on bensulfuron-methyl (defined as 100%). However, they showed differing activity toward propyrisulfuron. The relative activities of Echinochloa phyllopogon CYP81A12 (12.2%) and CYP81A21 (34.4%) toward propyrisulfuron were lower than that of rice CYP81A6 (98.5%). Additionally, rice CYP81A6 produced O-demethylated propyrisulfuron and hydroxylated products, whereas Echinochloa phyllopogon CYP81As produced only hydroxylated products. Arabidopsis expressing CYP81A12 and CYP81A21 exhibited lower levels of resistance against propyrisulfuron compared to that in Arabidopsis expressing CYP81A6. Homology modeling and in silico docking revealed that bensulfuron-methyl docked well into the active centers of all three CYP81As, whereas propyrisulfuron docked into rice CYP81A6 but not into Echinochloa phyllopogon CYP81As. CONCLUSION The differing herbicide specificity displayed by rice CYP81A6 and Echinochloa phyllopogon CYP81A12 and CYP81A21 will help design inhibitors (synergists) of weed CYP81As, as well as develop novel herbicide ingredients that are selectively metabolized by crop CYP81As, to overcome the problem of herbicide resistance. © 2022 Society of Chemical Industry.
Collapse
Affiliation(s)
- Woosuk Ha
- School of Life and Environmental Science, University of Tsukuba, Ibaraki, Japan
| | - Takuya Yamaguchi
- Biotechnology Research Center and Department of Biotechnology, Toyama Prefectural University, Toyama, Japan
| | - Satoshi Iwakami
- Graduate School of Agriculture, Kyoto University, Kyoto, Japan
| | - Yukari Sunohara
- Faculty of Life and Environmental Sciences, University of Tsukuba, Ibaraki, Japan
| | - Hiroshi Matsumoto
- Faculty of Life and Environmental Sciences, University of Tsukuba, Ibaraki, Japan
| |
Collapse
|
36
|
Tataridas A, Jabran K, Kanatas P, Oliveira RS, Freitas H, Travlos I. Early detection, herbicide resistance screening, and integrated management of invasive plant species: a review. Pest Manag Sci 2022; 78:3957-3972. [PMID: 35510308 DOI: 10.1002/ps.6963] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/05/2022] [Revised: 04/27/2022] [Accepted: 05/04/2022] [Indexed: 06/14/2023]
Abstract
Invasive plant species (IPS) are often considered weeds that cause high yield losses in crops, negatively affect the environment, and disrupt certain ecosystem services. The negative impact of IPS on biodiversity is increasing and disturbing native vegetation. The management of plant invasions can be divided in two phases (before and after invasion). Prior to introduction it is crucial to develop the knowledge base (biology, ecology, distribution, impact, management) on IPS, prevention measures and risk assessment. After introduction if eradication fails, the monitoring and the integrated management of IPS are imperative to prevent the naturalization and further dispersal. This review uses two major invasive weed species (Amaranthus palmeri S. Wats. and Solanum elaeagnifolium Cav.) as case studies to propose a framework for early detection, rapid herbicide resistance screening, and integrated management. The holistic framework that is presented exploits recent: (i) novel detection tools, (ii) rapid tests and assays for herbicide resistance, and (iii) biology, ecology, distribution traits, and management tools for the IPS. Farmers, advisors, researchers, and policymakers need briefing on IPS growth dynamics, adaptability rates, and response to conventional and novel treatments to prevent new invasions, eradicate isolated stands, and mitigate the impact of invasive weed species in the long term. © 2022 Society of Chemical Industry.
Collapse
Affiliation(s)
- Alexandros Tataridas
- Laboratory of Agronomy, Department of Crop Science, Agricultural University of Athens, Athens, Greece
| | - Khawar Jabran
- Department of Plant Production and Technologies, Faculty of Agricultural Sciences and Technologies, Nigde Omer Halisdemir University, Nigde, Turkey
| | | | - Rui S Oliveira
- Center for Functional Ecology, Department of Life Sciences, University of Coimbra, Coimbra, Portugal
| | - Helena Freitas
- Center for Functional Ecology, Department of Life Sciences, University of Coimbra, Coimbra, Portugal
| | - Ilias Travlos
- Laboratory of Agronomy, Department of Crop Science, Agricultural University of Athens, Athens, Greece
| |
Collapse
|
37
|
Johnen P, Zimmermann S, Betz M, Hendriks J, Zimmermann A, Marnet M, De I, Zimmermann G, Kibat C, Cornaciu I, Mariaule V, Pica A, Clavel D, Márquez JA, Witschel M. Inhibition of acyl-ACP thioesterase as site of action of the commercial herbicides cumyluron, oxaziclomefone, bromobutide, methyldymron and tebutam. Pest Manag Sci 2022; 78:3620-3629. [PMID: 35604014 DOI: 10.1002/ps.7004] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/15/2022] [Revised: 05/18/2022] [Accepted: 05/23/2022] [Indexed: 06/15/2023]
Abstract
BACKGROUND Understanding the mode and site of action of a herbicide is key for its efficient development, the evaluation of its toxicological risk, efficient weed control and resistance management. Recently, the mode of action (MoA) of the herbicide cinmethylin was identified in lipid biosynthesis with acyl-ACP thioesterase (FAT) as the site of action (SoA). Cinmethylin was registered for selective use in cereal crops for the control of grass weeds in 2020. RESULTS Here, we present a high-resolution co-crystal structure of FAT in complex with cumyluron identified by a high throughput crystallization screen. We show binding to and inhibition of FAT by cumyluron. Furthermore, in an array of experiments consisting of FAT binding assays, FAT inhibition assays, physiological and metabolic profiling, we tested compounds that are structurally related to cumyluron and identified the commercial herbicides oxaziclomefone, methyldymron, tebutam and bromobutide, with so far unknown sites of action, as FAT inhibitors. Additionally, we show that the previously described FAT inhibitors cinmethylin and methiozolin bind to FAT in a nanomolar range, inhibit FAT enzymatic activity and lead to similar metabolic changes. CONCLUSION Based on presented data, we corroborate cinmethylin and methiozolin as potent FAT inhibitors and identify FAT as the SoA of the herbicides cumyluron, oxaziclomefone, bromobutide, methyldymron and tebutam. © 2022 Society of Chemical Industry.
Collapse
|
38
|
Landau CA, Hager AG, Williams MM. Deteriorating weed control and variable weather portends greater soybean yield losses in the future. Sci Total Environ 2022; 830:154764. [PMID: 35341841 DOI: 10.1016/j.scitotenv.2022.154764] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/05/2022] [Revised: 03/18/2022] [Accepted: 03/18/2022] [Indexed: 06/14/2023]
Abstract
Since the 1950's much of the US soybean growing region has experienced rising temperatures, more variable rainfall, and increased carbon emissions. These trends are predicted to continue throughout the 21st century. Variable weather and weed interference influence crop performance; however, their combined effects on soybean yield are poorly understood. Using machine learning techniques on a database of herbicide trials spanning 28 years and 106 weather environments we modeled the most important relationships among weed control, weather variability, and crop management on soybean yield loss. When late-season weeds were poorly controlled, average soybean yield losses of 48% were observed. Additionally, when weeds were not completely controlled, low rainfall and high temperatures during seed fill exacerbated soybean yield loss due to weeds. Since much of the US soybean growing region is heading towards drier, warmer conditions, coupled with growing herbicide resistance, future soybean yield loss will increase without significant improvements in weed management systems.
Collapse
Affiliation(s)
- Christopher A Landau
- ORISE Postdoctoral Fellow, Global Change and Photosynthesis Research Unit, USDA-ARS, 1102 S Goodwin Ave, Urbana, IL 61801, United States of America.
| | - Aaron G Hager
- Department of Crop Sciences, University of Illinois, 1102 S Goodwin Ave, Urbana, IL 61801, United States of America
| | - Martin M Williams
- Global Change and Photosynthesis Research Unit, USDA-ARS, 1102 S Goodwin Ave, Urbana, IL 61801, United States of America
| |
Collapse
|
39
|
Goggin DE, Cawthray GR, Busi R, Porri A, Beckie HJ. Enhanced production of water-soluble cinmethylin metabolites by Lolium rigidum populations with reduced cinmethylin sensitivity. Pest Manag Sci 2022; 78:3173-3182. [PMID: 35470951 PMCID: PMC9325456 DOI: 10.1002/ps.6947] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/21/2022] [Revised: 04/10/2022] [Accepted: 04/26/2022] [Indexed: 06/14/2023]
Abstract
BACKGROUND Cinmethylin, a pre-emergence herbicide inhibiting fatty acid thioesterase activity, has recently been introduced to Australian cereal cropping for the control of Lolium rigidum Gaud. (annual ryegrass). To date, there have been no confirmed cases of cinmethylin resistance identified in this species, but some populations exhibit reduced sensitivity to this herbicide. To explore the mechanism which contributes to reduced sensitivity of annual ryegrass to cinmethylin, the extent and nature of cinmethylin metabolism, using carbon-14 (14 C)-labelled herbicide, were analysed in three reduced-sensitivity annual ryegrass populations, alongside a susceptible population and cinmethylin-tolerant wheat as controls. RESULTS All samples showed the same metabolite profile, with the extent of production of a specific water-soluble metabolite being correlated to the level of herbicide sensitivity. Application of the cytochrome P450 inhibitor phorate caused a decrease in water-soluble metabolite production as well as seedling growth in the presence of cinmethylin, indicating that reduced cinmethylin sensitivity in annual ryegrass could be wholly or partially due to oxidative modification of cinmethylin. CONCLUSION Because annual ryegrass has the potential to metabolize cinmethylin in the same way as wheat, careful stewardship is required to ensure the longevity of this herbicide. © 2022 The Authors. Pest Management Science published by John Wiley & Sons Ltd on behalf of Society of Chemical Industry.
Collapse
Affiliation(s)
- Danica E Goggin
- Australian Herbicide Resistance Initiative, School of Agriculture and EnvironmentUniversity of Western AustraliaPerthAustralia
| | - Gregory R Cawthray
- School of Biological SciencesUniversity of Western AustraliaPerthAustralia
| | - Roberto Busi
- Australian Herbicide Resistance Initiative, School of Agriculture and EnvironmentUniversity of Western AustraliaPerthAustralia
| | | | - Hugh J Beckie
- Australian Herbicide Resistance Initiative, School of Agriculture and EnvironmentUniversity of Western AustraliaPerthAustralia
| |
Collapse
|
40
|
Barros RE, Mendes Reis M, Tuffi Santos LD, Fagundes Correia J, Fernandes de Souza R. Light availability in the cultivation environment and the action of glyphosate on Digitaria insularis: physiological aspects and herbicide root exudation. J Environ Sci Health B 2022; 57:597-607. [PMID: 35726612 DOI: 10.1080/03601234.2022.2088198] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
The root exudation decreases the susceptibility of some species to herbicides, which is still little studied in Digitaria insularis, popularly known as sourgrass, one of the main weeds of annual crops in the world. Thus, we sought to identify whether there is an occurrence of root exudation of glyphosate in D. insularis and the influence of this herbicide on physiological and control parameters of this species when cultivated under different light conditions. The experimental design was 2 x 5, with the first factor represented by environments: full sun and artificial shading. The second factor was represented by doses 0, 370, 740, 1110, and 1480 g ha-1 of glyphosate. The plants grown in shading showed more significant injury in the initial phase. The increase in the glyphosate doses reduced the photochemical efficiency of the photosystem II (ФPSII), electron transport rate (ETR), photosynthetic rate, stomatal conductance, transpiration rate, and water use efficiency of D. insularis regardless of the cultivation environment. The light restriction increased the ФPSII in D. insularis at three days after applying the herbicide (DAH); at 6 DAH, the shaded plants showed a more pronounced reduction in ФPSII. D. insularis did not show root exudation of glyphosate, and shading did not influence this process.
Collapse
Affiliation(s)
- Rodrigo Eduardo Barros
- Instituto de Ciências Agrárias, Universidade Federal de Minas Gerais, Montes Claros, Minas Gerais, Brazil
| | | | | | | | | |
Collapse
|
41
|
Huang Y, Zhao X, Pan Z, Reddy KN, Zhang J. Hyperspectral plant sensing for differentiating glyphosate-resistant and glyphosate-susceptible johnsongrass through machine learning algorithms. Pest Manag Sci 2022; 78:2370-2377. [PMID: 35254728 DOI: 10.1002/ps.6864] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/14/2021] [Revised: 01/12/2022] [Accepted: 03/07/2022] [Indexed: 06/14/2023]
Abstract
BACKGROUND Johnsongrass (Sorghum halepense) is one of the weeds that evolves resistance to glyphosate [N-(phosphonomethyl)-glycine], the most widely used herbicide, and the weed may cause agronomic troublesome in the southern USA. This paper reports a study on developing a hyperspectral plant sensing approach to explore the spectral features of glyphosate-resistant (GR) and glyphosate-sensitive (GS) plants to evaluate this approach using machine learning algorithms to differentiate between GR and GS plants. RESULTS On average, GR plants have higher spectral reflectance compared with GS plants. The sensitive spectral bands were optimally selected using the successive projections algorithm respectively wrapped with the machine learning algorithms of k-nearest neighbors (KNN), random forest (RF), and support vector machine (SVM) with Fisher linear discriminant analysis (FLDA) to classify between GS and GS plants. At 3 weeks after transplanting (WAT) KNN and SVM could not acceptably classify the GR and GS plants but they improved significantly with the stages to have their overall accuracies reaching 73% and 77%, respectively, at 5 WAT. RF and FLDA had a better ability to classify the plants at 3 WAT but RF was low in accuracy at 2 WAT while FLDA dropped accuracy to 50% at 4 WAT from 57% at 3 WAT and raised it to 73% at 5 WAT. CONCLUSIONS Previous studies were conducted developing the hyperspectral imaging approach to differentiate GR Palmer amaranth from GS Palmer amaranth and GR Italian ryegrass from GS Italian ryegrass with classification accuracies of 90% and 80%, respectively. This study demonstrated that the hyperspectral plant sensing approach could be developed to differentiate GR johnsongrass from glyphosate-sensitive GS johnsongrass with the highest classification accuracy of 77%. The comparison with our previous studies indicated that the similar hyperspectral approach could be used and transferred from classification across different GR and GS weed biotypes, such as Palmer amaranth, Italian ryegrass and johnsongrass, so it is highly possible for classification of more other GR and GS weed biotypes as well. On the basis of classic pattern recognition approaches the process of plant classification can be enhanced by modeling using machine learning algorithms. © 2022 Society of Chemical Industry. This article has been contributed to by U.S. Government employees and their work is in the public domain in the USA.
Collapse
Affiliation(s)
- Yanbo Huang
- US Department of Agriculture, Agricultural Research Service, Genetics and Sustainable Agriculture Research Unit, Mississippi State, MS, USA
| | | | - Zeng Pan
- Hangzhou Dianzi University, Hangzhou, China
| | - Krishna N Reddy
- US Department of Agriculture, Agricultural Research Service, Crop Production Systems Research Unit, Stoneville, MS, USA
| | | |
Collapse
|
42
|
Farr R, Norsworthy JK, Barber LT, Butts TR, Roberts T. Utility of roller wiper applications of dicamba for Palmer amaranth control in soybean. Pest Manag Sci 2022; 78:2151-2160. [PMID: 35170207 PMCID: PMC9314051 DOI: 10.1002/ps.6838] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/13/2021] [Revised: 02/09/2022] [Accepted: 02/16/2022] [Indexed: 06/14/2023]
Abstract
BACKGROUND The commercialization of dicamba-resistant soybean has resulted in increased concern for off-target movement of dicamba onto sensitive vegetation. To mitigate the off-target movement through physical drift, one might consider use of rope wicks and other wiper applicators. Although wiper-type application methods have been efficacious in pasture settings, the utility of dicamba using wiper applicators in agronomic crops is not available in scientific literature. To determine the utility of roller wipers for dicamba applications in dicamba-resistant soybean, two separate experiments were conducted in the summer of 2020 and replicated in both Keiser and Fayetteville, AR, USA. RESULTS Utilizing opposing application directions and a 2:1:1 ratio of water: formulated glyphosate: formulated dicamba were the most efficacious practices for controlling Palmer amaranth. The high herbicide concentrations and wiping in opposing directions increased dicamba-resistant soybean injury when the wiper contacted the crop, but no yield loss was observed because of this injury. Broadcast applications resulted in greater Palmer amaranth mortality than roller wiper applications, and the most effective roller wiper treatments were when two sequential applications were made inside the crop canopy. CONCLUSIONS Dicamba applications require adequate coverage for optimum weed control. While efforts can be made to increase roller wiper efficacy by optimizing coverage and timing of applications, broadcast applications are superior to roller wiper applicators for weed control. Roller wiper applications did not reduce soybean yield, thus wiper-type applications may be safely used in dicamba-resistant soybean, albeit the likelihood for off-target damage caused by volatilization of these treatments would need to be investigated. © 2022 The Authors. Pest Management Science published by John Wiley & Sons Ltd on behalf of Society of Chemical Industry.
Collapse
Affiliation(s)
- Rodger Farr
- Department of Crop, Soil, and Environmental SciencesUniversity of ArkansasFayettevilleARUSA
| | - Jason K. Norsworthy
- Department of Crop, Soil, and Environmental SciencesUniversity of ArkansasFayettevilleARUSA
| | - L. Tom Barber
- Department of Crop, Soil, and Environmental SciencesUniversity of Arkansas Systems Division of AgricultureLonokeARUSA
| | - Thomas R. Butts
- Department of Crop, Soil, and Environmental SciencesUniversity of Arkansas Systems Division of AgricultureLonokeARUSA
| | - Trent Roberts
- Department of Crop, Soil, and Environmental SciencesUniversity of ArkansasFayettevilleARUSA
| |
Collapse
|
43
|
Hulme PE. Global drivers of herbicide-resistant weed richness in major cereal crops worldwide. Pest Manag Sci 2022; 78:1824-1832. [PMID: 35043546 PMCID: PMC9306702 DOI: 10.1002/ps.6800] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/02/2021] [Revised: 12/16/2021] [Accepted: 01/18/2022] [Indexed: 06/14/2023]
Abstract
BACKGROUND The number of herbicide-resistant weeds differs across the globe but the reasons for this variation are poorly understood. Taking a macroecological approach, the role of six drivers of herbicide resistance in a country was examined for barley, maize, rice and wheat crops worldwide. Drivers captured agronomic measures (crop harvested area, herbicide and fertilizer input) as well as sources of sampling bias that result in under-reporting of herbicide resistance (human population density, research intensity and time since the first record of resistance). RESULTS Depending on the crop, best subset regression models explained between 60% and 80% of the variation in herbicide-resistant weeds recorded in countries worldwide. Global prevalence of herbicide-resistant weeds is likely underestimated, especially in countries with limited capability in herbicide research. Numbers of resistant weeds worldwide will continue to increase. Agricultural intensification, captured by fertilizer and herbicide input, as well as further expansion of crop harvested area are primary drivers of future herbicide-resistant weeds. CONCLUSION Because the evolution of herbicide resistance lags behind the selection pressures imposed by fertilizer and herbicide inputs, several countries (e.g. Brazil, South Africa, Uruguay) appear to exhibit a 'herbicide resistance debt' in which current agronomic conditions have set the scene for higher numbers of herbicide-resistant weeds than currently observed. Future agricultural expansion will lead to more herbicide-resistant weeds, especially in developing countries as their economies grow and where herbicide resistance is currently under-reported. A global strategy for increasing national capability in herbicide resistance research is needed. © 2022 The Author. Pest Management Science published by John Wiley & Sons Ltd on behalf of Society of Chemical Industry.
Collapse
Affiliation(s)
- Philip E Hulme
- Bio‐Protection Research CentreLincoln UniversityCanterburyNew Zealand
| |
Collapse
|
44
|
Duke SO, Dayan FE. The search for new herbicide mechanisms of action: Is there a 'holy grail'? Pest Manag Sci 2022; 78:1303-1313. [PMID: 34796620 DOI: 10.1002/ps.6726] [Citation(s) in RCA: 28] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/30/2021] [Accepted: 11/18/2021] [Indexed: 05/26/2023]
Abstract
New herbicide modes of action (MOAs) are in great demand because of the burgeoning evolution of resistance of weeds to existing commercial herbicides. This need has been exacerbated by the almost complete lack of introduction of herbicides with new MOAs for almost 40 years. There are many highly phytotoxic compounds with MOAs not represented by commercial herbicides, but neither these compounds nor structural analogues have been developed as herbicides for a variety of reasons. Natural products provide knowledge of many MOAs that are not being utilized by commercial herbicides. Other means of identifying new herbicide targets are discussed, including pharmaceutical target sites and metabolomic and proteomic information, as well as the use of artificial intelligence and machine learning to predict herbicidal compounds with new MOAs. Information about several newly discovered herbicidal compounds with new MOAs is summarized. The currently increased efforts of both established companies and start-up companies are likely to result in herbicides with new MOAs that can be used in herbicide resistance management within the next decade. © 2021 Society of Chemical Industry.
Collapse
Affiliation(s)
- Stephen O Duke
- National Center for Natural Products Research, School of Pharmacy, University of Mississippi, University, Oxford, MS, USA
| | - Franck E Dayan
- Department of Agricultural Biology, Colorado State University, Fort Collins, CO, USA
| |
Collapse
|
45
|
Hulme PE. Hierarchical cluster analysis of herbicide modes of action reveals distinct classes of multiple resistance in weeds. Pest Manag Sci 2022; 78:1265-1271. [PMID: 34854224 PMCID: PMC9299916 DOI: 10.1002/ps.6744] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/28/2021] [Revised: 11/24/2021] [Accepted: 12/02/2021] [Indexed: 06/13/2023]
Abstract
BACKGROUND The number of weed species resistant to multiple herbicide modes of action (MoAs) has increased over the last 30 years and may in the future render existing herbicide MoAs obsolete for many cropping systems. Yet few predictive tools exist to manage this risk. Using a worldwide dataset of weed species resistant to multiple herbicide MoAs, hierarchical clustering was used to classify MoAs into similar groups in relation to the suite of resistant weed species they have in common. Network analyses then were used to explore the relative importance of species prevalence and similarity in cluster patterns. RESULTS Hierarchical clustering identified three similarly sized clusters of herbicide MoAs that were linked by the co-occurrence of resistant weeds: Herbicide Resistance Action Committee (HRAC) groups 2, 4, 5 and 9; HRAC groups 12, 14 and 15; and HRAC groups 1, 3 and 22. Cluster membership was consistent with similarities in the physiological or biochemical target of the herbicide MoAs. Network analyses revealed that the number of weed species resistant to two different MoAs was related to the number of weeds known to be resistant to each individual herbicide MoA. CONCLUSIONS Hierarchical cluster analysis provided new insights into the risk of weeds becoming resistant to more than one herbicide MoA. By clustering herbicide MoAs into three distinct groups, the potential exists for farmers to manage resistance by rotating herbicides between rather than within clusters, as far as crop, weed and environmental conditions allow.
Collapse
Affiliation(s)
- Philip E Hulme
- Bio‐Protection Research CentreLincoln UniversityChristchurchNew Zealand
| |
Collapse
|
46
|
Cai X, Chen J, Wang X, Gao H, Xiang B, Dong L. Mefenacet resistance in multiple herbicide-resistant Echinochloa crus-galli L. populations. Pestic Biochem Physiol 2022; 182:105038. [PMID: 35249656 DOI: 10.1016/j.pestbp.2022.105038] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/19/2021] [Revised: 01/11/2022] [Accepted: 01/12/2022] [Indexed: 06/14/2023]
Abstract
Echinochloa crus-galli L., a notorious weed in rice paddy fields, is usually kept under control by mefenacet application at the pre-emergence or early post-emergence stage. Due to continuous and repeated usage, E. crus-galli is developing resistance to mefenacet in China. Two putative resistant and one susceptible E. crus-galli populations were collected from paddy fields in Jiangsu Province to characterize their herbicide resistance. Compared with the susceptible population, the two mefenacet-resistant populations had 2.8- and 4.1-times greater pre-emergence resistance, and 10- and 6.8-times greater early post-emergence resistance to mefenacet. These mefenacet-resistant E. crus-galli populations also exhibited cross- or multiple-resistance to acetochlor, pyraclonil, imazamox, and quinclorac. However, when the glutathione S-transferase (GST) inhibitor 4-chloro-7-nitrobenzoxadiazole (NBD-Cl) was applied prior to post-emergence treatment, mefenacet resistance levels were reduced in both populations. Additionally, GST activity in vivo in one resistant population was much higher than the susceptible population after mefenacet application. The very long chain fatty acid elongases (VLCFAEs) from both mefenacet-resistant populations required much higher mefenacet concentration to inhibit their activity. The reduced sensitivity of VLCFAEs to mefenacet indicates the presence of a target-site resistance mechanism and induction of high GST activity may provide additional contribution to E. crus-galli mefenacet resistance through a non-target-site mechanism.
Collapse
Affiliation(s)
- Xinyi Cai
- College of Plant Protection, Nanjing Agricultural University, Nanjing 210095, China; Key Laboratory of Integrated Management of Crop Diseases and Pests (Nanjing Agricultural University), Ministry of Education, China
| | - Jinyi Chen
- College of Plant Protection, Nanjing Agricultural University, Nanjing 210095, China; Key Laboratory of Integrated Management of Crop Diseases and Pests (Nanjing Agricultural University), Ministry of Education, China.
| | - Xiaofei Wang
- College of Science, Nanjing Agricultural University, Nanjing 210095, China; Radioisotope Laboratory of Nanjing Agricultural University (Nanjing Agricultural University), Ministry of Education, China
| | - Haitao Gao
- College of Plant Protection, Nanjing Agricultural University, Nanjing 210095, China; Key Laboratory of Integrated Management of Crop Diseases and Pests (Nanjing Agricultural University), Ministry of Education, China
| | - Binghan Xiang
- College of Plant Protection, Nanjing Agricultural University, Nanjing 210095, China; Key Laboratory of Integrated Management of Crop Diseases and Pests (Nanjing Agricultural University), Ministry of Education, China
| | - Liyao Dong
- College of Plant Protection, Nanjing Agricultural University, Nanjing 210095, China; Key Laboratory of Integrated Management of Crop Diseases and Pests (Nanjing Agricultural University), Ministry of Education, China.
| |
Collapse
|
47
|
Anunciato VM, Bianchi L, Gomes GL, Velini ED, Duke SO, Carbonari CA. Effect of low glyphosate doses on flowering and seed germination of glyphosate-resistant and -susceptible Digitaria insularis. Pest Manag Sci 2022; 78:1227-1239. [PMID: 34850528 DOI: 10.1002/ps.6740] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/11/2021] [Revised: 11/16/2021] [Accepted: 12/01/2021] [Indexed: 06/13/2023]
Abstract
BACKGROUND Herbicide hormesis is characterized by stimulation of various growth and developmental parameters, such as biomass and height, at low herbicide doses. Other possible hormetic effects are earlier flowering, higher seed weight, more seeds, and a shorter plant life cycle, which could favor the propagation of the species. This study tested the early flowering in glyphosate-resistant and -susceptible Digitaria insularis biotypes under treatment with low glyphosate doses. RESULTS Hormesis caused by low glyphosate doses occurred in all experiments. The hormetic effects were a decrease in time necessary for the formation of inflorescences and increased seed weight and germination speed. Higher glyphosate doses were required for the hormetic effect in the glyphosate-resistant than the -susceptible D. insularis biotype. CONCLUSIONS Hormesis caused by low glyphosate doses in D. insularis may provide an advantage for the dissemination of this species, helping to alter the weed flora. As the doses that cause stimulation in glyphosate-resistant biotypes are higher than in glyphosate-susceptible biotypes, the selection of resistant biotypes may be favored in glyphosate-sprayed fields, increasing the rate of infestation of glyphosate-resistant biotypes.
Collapse
Affiliation(s)
- Vitor M Anunciato
- Department of Plant Protection, São Paulo State University (UNESP), Faculty of Agronomic Sciences, Botucatu, Brazil
| | - Leandro Bianchi
- Department of Plant Protection, São Paulo State University (UNESP), Faculty of Agronomic Sciences, Botucatu, Brazil
| | - Giovanna Lgc Gomes
- Department of Plant Protection, São Paulo State University (UNESP), Faculty of Agronomic Sciences, Botucatu, Brazil
| | - Edivaldo D Velini
- Department of Plant Protection, São Paulo State University (UNESP), Faculty of Agronomic Sciences, Botucatu, Brazil
| | - Stephen O Duke
- National Center for Natural Products Research, School of Pharmacy, University of Mississippi, Oxford, MS, USA
| | - Caio A Carbonari
- Department of Plant Protection, São Paulo State University (UNESP), Faculty of Agronomic Sciences, Botucatu, Brazil
| |
Collapse
|
48
|
Ortiz MF, Figueiredo MR, Nissen SJ, Wersal RM, Ratajczyk WA, Dayan FE. 2,4-D and 2,4-D butoxyethyl ester behavior in Eurasian and hybrid watermilfoil (Myriophyllum spp.). Pest Manag Sci 2022; 78:626-632. [PMID: 34626161 DOI: 10.1002/ps.6671] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/24/2021] [Revised: 10/01/2021] [Accepted: 10/09/2021] [Indexed: 06/13/2023]
Abstract
BACKGROUND Hybrid watermilfoil is becoming more prevalent in many lakes where the invasive Eurasian (Myriophyllum spicatum, EWM) and native northern watermilfoil (M. sibiricum) co-occur. These Eurasian and northern watermilfoil hybrids (HWM) grow 30% faster and in many cases are less sensitive to 2,4-dichlorophenoxy acetic acid (2,4-D) than either parent. The mechanism(s) impacting 2,4-D tolerance in these hybrids was investigated by comparing the absorption, translocation, metabolism, and desorption of two 2,4-D formulations in EWM and HWM. RESULTS 2,4-D absorption in EWM and HWM was 5.7 and 7.9 times the external herbicide concentration determined by the plant concentration factor, a metric used to determine herbicide bioaccumulation, and 2,4-D butoxyethyl ester absorption was 35.6 and 52.1 times the external concentration in EWM and HWM, respectively. Herbicide bioaccumulation was greater in HWM than in EWM. Herbicide translocation to HWM roots was limited at 192 HAT and herbicide desorption in HWM was slightly lower than EWM. No differences were found in herbicide metabolism between the two plant species. CONCLUSION 2,4-D resistance in HWM is not due to non-target-site resistance as no differences in herbicide absorption, translocation, desorption and/or metabolism were identified; therefore, target-site resistance is the most likely resistance mechanism. More research is needed to identify the molecular basis for the 2,4-D-resistant trait in HWM. © 2021 Society of Chemical Industry.
Collapse
Affiliation(s)
- Mirella F Ortiz
- Department of Agricultural Biology, Colorado State University, Fort Collins, CO, USA
| | - Marcelo Ra Figueiredo
- Department of Agricultural Biology, Colorado State University, Fort Collins, CO, USA
| | - Scott J Nissen
- Department of Agricultural Biology, Colorado State University, Fort Collins, CO, USA
| | - Ryan M Wersal
- Department of Biological Sciences, Minnesota State University, Mankato, MN, USA
| | | | - Franck E Dayan
- Department of Agricultural Biology, Colorado State University, Fort Collins, CO, USA
| |
Collapse
|
49
|
Elmore MT, Diehl KH, Di R, Chen J, Patterson EL, Brosnan JT, Trigiano RN, Tuck DP, Boggess SL, McDonald S. Identification of two Eleusine indica (goosegrass) biotypes of cool-season turfgrass resistant to dithiopyr. Pest Manag Sci 2022; 78:499-505. [PMID: 34553491 PMCID: PMC9293289 DOI: 10.1002/ps.6654] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/29/2021] [Revised: 09/15/2021] [Accepted: 09/23/2021] [Indexed: 06/13/2023]
Abstract
BACKGROUND Turfgrass managers reported poor Eleusine indica control following applications of the mitosis-inhibiting herbicide dithiopyr in cool-season turfgrass. Field, glasshouse, and laboratory experiments were conducted to understand the response of these biotypes to dithiopyr and prodiamine. RESULTS In field experiments at two locations with putative dithiopyr-resistant E. indica, preemergence applications of dithiopyr provided no E. indica control. Single applications of the protoporphyrinogen oxidase (PPO)-inhibitor, oxadiazon, provided > 85% control at these locations. When subjected to agar-based bioassays, root growth of putative resistant biotypes planted with 0.01 mmol L-1 dithiopyr was slightly reduced (< 25%) whereas roots were completely inhibited in the susceptible biotype. Glasshouse whole plant rate-response experiments found that the cytochrome P450 inhibitor, piperonyl butoxide (PBO), did not increase the sensitivity of these putative resistant biotypes to dithiopyr. Sequencing of α-tubulin 1 (TUA1) revealed a Leu-136-Phe substitution in both dithiopyr-resistant populations. CONCLUSION Eleusine indica biotypes with resistance to dithiopyr are present in cool-season turfgrass systems in the United States. Resistance is possibly related to a single nucleotide polymorphism (SNP) of an α-tubulin gene. If turfgrass managers suspect resistance to dithiopyr, oxadiazon can still be an effective alternative for preemergence control. © 2021 The Authors. Pest Management Science published by John Wiley & Sons Ltd on behalf of Society of Chemical Industry.
Collapse
Affiliation(s)
- Matthew T Elmore
- Department of Plant BiologyRutgers, The State University of New JerseyNew BrunswickNJUSA
| | - Katherine H Diehl
- Department of Plant BiologyRutgers, The State University of New JerseyNew BrunswickNJUSA
| | - Rong Di
- Department of Plant BiologyRutgers, The State University of New JerseyNew BrunswickNJUSA
| | - Jinyi Chen
- Department of Plant, Soil and Microbial SciencesMichigan State UniversityEast LansingMIUSA
| | - Eric L Patterson
- Department of Plant, Soil and Microbial SciencesMichigan State UniversityEast LansingMIUSA
| | - James T Brosnan
- Plant Sciences DepartmentThe University of TennesseeKnoxvilleTNUSA
| | - Robert N Trigiano
- Department of Entomology and Plant PathologyThe University of TennesseeKnoxvilleTNUSA
| | - Daniel P Tuck
- Department of Plant BiologyRutgers, The State University of New JerseyNew BrunswickNJUSA
| | - Sarah L Boggess
- Department of Entomology and Plant PathologyThe University of TennesseeKnoxvilleTNUSA
| | | |
Collapse
|
50
|
Chauhan BS. The world's first glyphosate-resistant case of Avena fatua L. and Avena sterilis ssp. ludoviciana (Durieu) Gillet & Magne and alternative herbicide options for their control. PLoS One 2022; 17:e0262494. [PMID: 35020774 PMCID: PMC8754340 DOI: 10.1371/journal.pone.0262494] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2021] [Accepted: 12/27/2021] [Indexed: 11/18/2022] Open
Abstract
Avena fatua and A. ludoviciana (commonly known as wild oats) are the most problematic winter grass species in fallows and winter crops in the northeast region of Australia. A series of experiments were conducted to evaluate the performance of glyphosate and alternative post-emergence herbicides on A. fatua and A. ludoviciana. This study reports the world's first glyphosate-resistant (GR) biotypes of A. fatua and A. ludoviciana. The glyphosate dose required to kill 50% of the plants (LD50) and to reduce 50% of the biomass (GR50) for the GR biotype of A. fatua was 556 g a.e./ha and 351 g a.e./ha, respectively. These values for A. ludoviciana were 848 g a.e./ha and 289 g a.e./ha. Regardless of the growth stage (3-4 or 6-7 leaf stages), clethodim (120 g a.i./ha), haloxyfop (78 g a.i./ha), pinoxaden (20 g a.i./ha), and propaquizafop (30 g a.i./ha) were the best alternative herbicide options for the control of A. fatua and A. ludoviciana. The efficacy of butroxydim (45 g a.i./ha), clodinafop (120 g a.i./ha), imazamox + imazapyr (36 g a.i./ha), and paraquat (600 g a.i./ha) reduced at the advanced growth stage. Glufosinate (750 g a.i./ha), flamprop (225 g a.i./ha), and pyroxsulam + halauxifen (20 g a.i./ha) did not provide effective control of Avena species. This study identified alternative herbicide options to manage GR biotypes of A. fatua and A. ludoviciana.
Collapse
Affiliation(s)
- Bhagirath Singh Chauhan
- The Centre for Crop Science, Queensland Alliance for Agriculture and Food Innovation (QAAFI) and School of Agriculture and Food Sciences (SAFS), The University of Queensland, Gatton, QLD, Australia
- Department of Agronomy, Chaudhary Charan Singh Haryana Agricultural University, Hisar, Haryana, India
| |
Collapse
|