1
|
Beringue A, Queffelec J, Le Lann C, Sulmon C. Sublethal pesticide exposure in non-target terrestrial ecosystems: From known effects on individuals to potential consequences on trophic interactions and network functioning. ENVIRONMENTAL RESEARCH 2024; 260:119620. [PMID: 39032619 DOI: 10.1016/j.envres.2024.119620] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/06/2024] [Revised: 07/12/2024] [Accepted: 07/13/2024] [Indexed: 07/23/2024]
Abstract
Over the last decades, the intensification of agriculture has resulted in an increasing use of pesticides, which has led to widespread contamination of non-target ecosystems in agricultural landscapes. Plants and arthropods inhabiting these systems are therefore chronically exposed to, at least, low levels of pesticides through direct pesticide drift, but also through the contamination of their nutrient sources (e.g. soil water or host/prey tissues). Pesticides (herbicides, acaricides/insecticides and fungicides) are chemical substances used to control pests, such as weeds, phytophagous arthropods and pathogenic microorganisms. These molecules are designed to disturb specific physiological mechanisms and induce mortality in targeted organisms. However, under sublethal exposure, pesticides also affect biological processes including metabolism, development, reproduction or inter-specific interactions even in organisms that do not possess the molecular target of the pesticide. Despite the broad current knowledge on sublethal effects of pesticides on organisms, their adverse effects on trophic interactions are less investigated, especially within terrestrial trophic networks. In this review, we provide an overview of the effects, both target and non-target, of sublethal exposures to pesticides on traits involved in trophic interactions between plants, phytophagous insects and their natural enemies. We also discuss how these effects may impact ecosystem functioning by analyzing studies investigating the responses of Plant-Phytophage-Natural enemy trophic networks to pesticides. Finally, we highlight the current challenges and research prospects in the understanding of the effects of pesticides on trophic interactions and networks in non-target terrestrial ecosystems.
Collapse
Affiliation(s)
- Axel Beringue
- Univ Rennes, CNRS, ECOBIO [(Ecosystèmes, Biodiversité, évolution)], UMR, 6553, Rennes, France
| | | | - Cécile Le Lann
- Univ Rennes, CNRS, ECOBIO [(Ecosystèmes, Biodiversité, évolution)], UMR, 6553, Rennes, France
| | - Cécile Sulmon
- Univ Rennes, CNRS, ECOBIO [(Ecosystèmes, Biodiversité, évolution)], UMR, 6553, Rennes, France.
| |
Collapse
|
2
|
Walsh L, Hill C, Ross RP. Impact of glyphosate (Roundup TM) on the composition and functionality of the gut microbiome. Gut Microbes 2023; 15:2263935. [PMID: 38099711 PMCID: PMC10561581 DOI: 10.1080/19490976.2023.2263935] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/14/2023] [Accepted: 09/24/2023] [Indexed: 12/18/2023] Open
Abstract
Glyphosate, the active ingredient in the broad-spectrum herbicide RoundupTM, has been a topic of discussion for decades due to contradictory reports of the effect of glyphosate on human health. Glyphosate inhibits the enzyme 5-enolpyruvylshikimate-3-phosphate synthase (EPSPS) of the shikimic pathway producing aromatic amino acids in plants, a mechanism that suggests that the herbicide would not affect humans as this pathway is not found in mammals. However, numerous studies have implicated glyphosate exposure in the manifestation of a variety of disorders in the human body. This review specifically outlines the potential effect of glyphosate exposure on the composition and functionality of the gut microbiome. Evidence has been building behind the hypothesis that the composition of each individual gut microbiota significantly impacts health. For this reason, the potential of glyphosate to inhibit the growth of beneficial microbes in the gut or alter their functionality is an important topic that warrants further consideration.
Collapse
Affiliation(s)
- Lauren Walsh
- APC Microbiome Ireland, University College Cork, Cork, Ireland
- School of Microbiology, University College Cork, Cork, Ireland
| | - Colin Hill
- APC Microbiome Ireland, University College Cork, Cork, Ireland
- School of Microbiology, University College Cork, Cork, Ireland
| | - R. Paul Ross
- APC Microbiome Ireland, University College Cork, Cork, Ireland
- School of Microbiology, University College Cork, Cork, Ireland
| |
Collapse
|
3
|
Costa RN, Bevilaqua NDC, Krenchinski FH, Giovanelli BF, Pereira VGC, Velini ED, Carbonari CA. Hormetic Effect of Glyphosate on the Morphology, Physiology and Metabolism of Coffee Plants. PLANTS (BASEL, SWITZERLAND) 2023; 12:2249. [PMID: 37375876 DOI: 10.3390/plants12122249] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/11/2023] [Revised: 06/02/2023] [Accepted: 06/05/2023] [Indexed: 06/29/2023]
Abstract
Glyphosate is a nonselective herbicide of systemic action that inhibits the enzyme 5-enolpyruvylshikimate-3-phosphate synthase, thus compromising amino acid production and consequently the growth and development of susceptible plants. The objective of this study was to evaluate the hormetic effect of glyphosate on the morphology, physiology, and biochemistry of coffee plants. Coffee seedlings (Coffea arabica cv Catuaí Vermelho IAC-144) were transplanted into pots filled with a mixture of soil and substrate and subjected to ten doses of glyphosate: 0, 11.25, 22.5, 45, 90, 180, 360, 720, 1440, and 2880 g acid equivalent (ae) ha-1. Evaluations were performed using the morphological, physiological, and biochemical variables. Data analysis for the confirmation of hormesis occurred with the application of mathematical models. The hormetic effect of glyphosate on coffee plant morphology was determined by the variables plant height, number of leaves, leaf area, and leaf, stem, and total dry mass. Doses from 14.5 to 30 g ae ha-1 caused the highest stimulation. In the physiological analyses, the highest stimulation was observed upon CO2 assimilation, transpiration, stomatal conductance, carboxylation efficiency, intrinsic water use efficiency, electron transport rate, and photochemical efficiency of photosystem II at doses ranging from 4.4 to 55 g ae ha-1. The biochemical analyses revealed significant increases in the concentrations of quinic acid, salicylic acid, caffeic acid, and coumaric acid, with maximum stimulation at doses between 3 and 140 g ae ha-1. Thus, the application of low doses of glyphosate has positive effects on the morphology, physiology, and biochemistry of coffee plants.
Collapse
Affiliation(s)
- Renato Nunes Costa
- Department of Crop Science, College of Agricultural Sciences, São Paulo State University (Universidade "Júlio de Mesquita Filho" UNESP), Botucatu 18610-034, SP, Brazil
| | - Natalia da Cunha Bevilaqua
- Department of Crop Science, College of Agricultural Sciences, São Paulo State University (Universidade "Júlio de Mesquita Filho" UNESP), Botucatu 18610-034, SP, Brazil
| | - Fábio Henrique Krenchinski
- Department of Crop Science, College of Agricultural Sciences, São Paulo State University (Universidade "Júlio de Mesquita Filho" UNESP), Botucatu 18610-034, SP, Brazil
| | - Bruno Flaibam Giovanelli
- Department of Crop Science, College of Agricultural Sciences, São Paulo State University (Universidade "Júlio de Mesquita Filho" UNESP), Botucatu 18610-034, SP, Brazil
| | - Vinicius Gabriel Caneppele Pereira
- Department of Crop Science, College of Agricultural Sciences, São Paulo State University (Universidade "Júlio de Mesquita Filho" UNESP), Botucatu 18610-034, SP, Brazil
| | - Edivaldo Domingues Velini
- Department of Crop Science, College of Agricultural Sciences, São Paulo State University (Universidade "Júlio de Mesquita Filho" UNESP), Botucatu 18610-034, SP, Brazil
| | - Caio Antonio Carbonari
- Department of Crop Science, College of Agricultural Sciences, São Paulo State University (Universidade "Júlio de Mesquita Filho" UNESP), Botucatu 18610-034, SP, Brazil
| |
Collapse
|
4
|
Del Castilo I, Neumann AS, Lemos FS, De Bastiani MA, Oliveira FL, Zimmer ER, Rêgo AM, Hardoim CCP, Antunes LCM, Lara FA, Figueiredo CP, Clarke JR. Lifelong Exposure to a Low-Dose of the Glyphosate-Based Herbicide RoundUp ® Causes Intestinal Damage, Gut Dysbiosis, and Behavioral Changes in Mice. Int J Mol Sci 2022; 23:5583. [PMID: 35628394 PMCID: PMC9146949 DOI: 10.3390/ijms23105583] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2022] [Revised: 05/10/2022] [Accepted: 05/11/2022] [Indexed: 02/04/2023] Open
Abstract
RoundUp® (RUp) is a comercial formulation containing glyphosate (N-(phosphono-methyl) glycine), and is the world's leading wide-spectrum herbicide used in agriculture. Supporters of the broad use of glyphosate-based herbicides (GBH) claim they are innocuous to humans, since the active compound acts on the inhibition of enzymes which are absent in human cells. However, the neurotoxic effects of GBH have already been shown in many animal models. Further, these formulations were shown to disrupt the microbiome of different species. Here, we investigated the effects of a lifelong exposure to low doses of the GBH-RUp on the gut environment, including morphological and microbiome changes. We also aimed to determine whether exposure to GBH-RUp could harm the developing brain and lead to behavioral changes in adult mice. To this end, animals were exposed to GBH-RUp in drinking water from pregnancy to adulthood. GBH-RUp-exposed mice had no changes in cognitive function, but developed impaired social behavior and increased repetitive behavior. GBH-Rup-exposed mice also showed an activation of phagocytic cells (Iba-1-positive) in the cortical brain tissue. GBH-RUp exposure caused increased mucus production and the infiltration of plama cells (CD138-positive), with a reduction in phagocytic cells. Long-term exposure to GBH-RUp also induced changes in intestinal integrity, as demonstrated by the altered expression of tight junction effector proteins (ZO-1 and ZO-2) and a change in the distribution of syndecan-1 proteoglycan. The herbicide also led to changes in the gut microbiome composition, which is also crucial for the establishment of the intestinal barrier. Altogether, our findings suggest that long-term GBH-RUp exposure leads to morphological and functional changes in the gut, which correlate with behavioral changes that are similar to those observed in patients with neurodevelopmental disorders.
Collapse
Affiliation(s)
- Ingrid Del Castilo
- Faculdade de Farmácia, Universidade Federal do Rio de Janeiro, Rio de Janeiro 21941-902, RJ, Brazil; (I.D.C.); (C.P.F.)
| | - Arthur S. Neumann
- Instituto de Ciências Biomédicas, Universidade Federal do Rio de Janeiro, Rio de Janeiro 21941-902, RJ, Brazil; (A.S.N.); (F.S.L.); (F.L.O.)
| | - Felipe S. Lemos
- Instituto de Ciências Biomédicas, Universidade Federal do Rio de Janeiro, Rio de Janeiro 21941-902, RJ, Brazil; (A.S.N.); (F.S.L.); (F.L.O.)
| | - Marco A. De Bastiani
- Departamento de Farmacologia, Universidade Federal do Rio Grande do Sul, Porto Alegre 90040-193, RS, Brazil; (M.A.D.B.); (E.R.Z.)
| | - Felipe L. Oliveira
- Instituto de Ciências Biomédicas, Universidade Federal do Rio de Janeiro, Rio de Janeiro 21941-902, RJ, Brazil; (A.S.N.); (F.S.L.); (F.L.O.)
| | - Eduardo R. Zimmer
- Departamento de Farmacologia, Universidade Federal do Rio Grande do Sul, Porto Alegre 90040-193, RS, Brazil; (M.A.D.B.); (E.R.Z.)
| | - Amanda M. Rêgo
- Instituto Oswaldo Cruz, Fundação Oswaldo Cruz, Rio de Janeiro 21040-360, RJ, Brazil; (A.M.R.); (L.C.M.A.); (F.A.L.)
| | - Cristiane C. P. Hardoim
- Instituto de Biociências, Universidade Estadual Paulista, São Vicente 11380-972, SP, Brazil;
| | - Luis Caetano M. Antunes
- Instituto Oswaldo Cruz, Fundação Oswaldo Cruz, Rio de Janeiro 21040-360, RJ, Brazil; (A.M.R.); (L.C.M.A.); (F.A.L.)
- Instituto Nacional de Ciência e Tecnologia de Inovação em Doenças de Populações Negligenciadas, Centro de Desenvolvimento Tecnológico em Saúde, Fundação Oswaldo Cruz, Rio de Janeiro 21040-361, RJ, Brazil
| | - Flávio A. Lara
- Instituto Oswaldo Cruz, Fundação Oswaldo Cruz, Rio de Janeiro 21040-360, RJ, Brazil; (A.M.R.); (L.C.M.A.); (F.A.L.)
| | - Claudia P. Figueiredo
- Faculdade de Farmácia, Universidade Federal do Rio de Janeiro, Rio de Janeiro 21941-902, RJ, Brazil; (I.D.C.); (C.P.F.)
- Instituto de Ciências Biomédicas, Universidade Federal do Rio de Janeiro, Rio de Janeiro 21941-902, RJ, Brazil; (A.S.N.); (F.S.L.); (F.L.O.)
| | - Julia R. Clarke
- Faculdade de Farmácia, Universidade Federal do Rio de Janeiro, Rio de Janeiro 21941-902, RJ, Brazil; (I.D.C.); (C.P.F.)
- Instituto de Ciências Biomédicas, Universidade Federal do Rio de Janeiro, Rio de Janeiro 21941-902, RJ, Brazil; (A.S.N.); (F.S.L.); (F.L.O.)
| |
Collapse
|
5
|
de Almeida Silva M, Espinoza Véliz JG, Pereira Sartori MM, Luiz Santos H. Glyphosate applied at a hormetic dose improves ripening without impairing sugarcane productivity and ratoon sprouting. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 806:150503. [PMID: 34600204 DOI: 10.1016/j.scitotenv.2021.150503] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/15/2021] [Revised: 09/15/2021] [Accepted: 09/17/2021] [Indexed: 06/13/2023]
Abstract
The management of sugarcane ripening is essential to ensuring the supply of high-quality raw material for the sugar-alcohol industry; chemical ripeners are frequently used to accelerate sucrose accumulation in the stalks during harvesting. The potential ripening effect of a low dose of glyphosate was evaluated in sugarcane, along with its impact on productivity and sprouting in the next crop cycle. A field experiment was conducted in 2015 and 2016 using a randomized block design with eight replicates in a split-plot scheme, with the following treatments: (1) control with only water application, (2) glyphosate at a low dose of 1.8 g a.e. ha-1 (corresponding to 0.005 L ha-1 of the commercial product (cp)), and (3) glyphosate at the commercially recommended dose for a ripener at 180 g a.e. ha-1 (corresponding to 0.50 L ha-1 of the cp) applied at 60, 45, 30, and 15 days before harvest (DBH). The harvest was performed on May 25, 2016 (0 DBH), and a total of five periods were evaluated. This study showed that the application of a hormetic dose of glyphosate to stimulate sugarcane ripening is promising, despite the limited duration of the effect. The application of the hormetic dose (1.8 g a.e. ha-1) at 30 DBH improved the technological quality of sugarcane in terms of Brix% juice, pol% cane, purity% juice, moisture% cane, reducing sugars, total reducing sugars, and total recoverable sugar. Additionally, it increased pol productivity, and did not affect ratoon sprouting in the subsequent cycle. Thus, this study provides a strategy for ripening management with a low environmental impact for sugarcane producers through a low (hormetic) dose of glyphosate.
Collapse
Affiliation(s)
- Marcelo de Almeida Silva
- Laboratory of Ecophysiology Applied to Agriculture (LECA), School of Agricultural Sciences, São Paulo State University (UNESP), Botucatu, SP, Brazil.
| | | | - Maria Márcia Pereira Sartori
- Laboratory of Ecophysiology Applied to Agriculture (LECA), School of Agricultural Sciences, São Paulo State University (UNESP), Botucatu, SP, Brazil
| | - Hariane Luiz Santos
- Laboratory of Ecophysiology Applied to Agriculture (LECA), School of Agricultural Sciences, São Paulo State University (UNESP), Botucatu, SP, Brazil
| |
Collapse
|
6
|
Ferrari S, Serodio Mettifogo O, Luís Oliveira Cunha M, Dos Santos Cordeiro LF, Cidreira Bastos SA, Delovo Carara LG, Alves de Oliveira LC. Does the glufosinate-ammonium herbicide have the potential to induce the hormesis effect in upland rice? JOURNAL OF ENVIRONMENTAL SCIENCE AND HEALTH. PART. B, PESTICIDES, FOOD CONTAMINANTS, AND AGRICULTURAL WASTES 2021; 56:969-976. [PMID: 34678127 DOI: 10.1080/03601234.2021.1994287] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
This study aimed to evaluate the effects of low doses of the herbicide glufosinate-ammonium in different application modes in the vegetative development of upland rice. The treatment consisted of a combination of five low doses (0; 15; 30; 60; and 100 g a.i. ha-1) of the herbicide glufosinate-ammonium and four application modes of the low doses: single between active tillering (AT) and floral differentiation (FD); single after FD; split in two (the first at the beginning of the AT and the second between AT and FD; split in three (the first at the beginning of the AT, the second between the AT and the FD and the third after the FD, with. There was no hormesis effect on rice crop due to low doses of glufosinate-ammonium. The vegetative development of rice plants was reduced by the application of low doses in all application modes with lower plant height, dry weight, number of panicles, and effective tiller.
Collapse
Affiliation(s)
- Samuel Ferrari
- College of Agriculture and Technology Science, Department of Crop Production, São Paulo State University (Unesp), Dracena, SP, Brazil
| | - Odin Serodio Mettifogo
- College of Agriculture and Technology Science, Department of Crop Production, São Paulo State University (Unesp), Dracena, SP, Brazil
| | | | - Luis Fernando Dos Santos Cordeiro
- College of Agriculture and Technology Science, Department of Crop Production, São Paulo State University (Unesp), Dracena, SP, Brazil
| | - Sony Anderson Cidreira Bastos
- College of Agriculture and Technology Science, Department of Crop Production, São Paulo State University (Unesp), Dracena, SP, Brazil
| | - Luís Guilherme Delovo Carara
- College of Agriculture and Technology Science, Department of Crop Production, São Paulo State University (Unesp), Dracena, SP, Brazil
| | | |
Collapse
|
7
|
Duke SO. Glyphosate: Uses Other Than in Glyphosate-Resistant Crops, Mode of Action, Degradation in Plants, and Effects on Non-target Plants and Agricultural Microbes. REVIEWS OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY 2021; 255:1-65. [PMID: 33895876 DOI: 10.1007/398_2020_53] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Glyphosate is the most used herbicide globally. It is a unique non-selective herbicide with a mode of action that is ideal for vegetation management in both agricultural and non-agricultural settings. Its use was more than doubled by the introduction of transgenic, glyphosate-resistant (GR) crops. All of its phytotoxic effects are the result of inhibition of only 5-enolpyruvylshikimate-3-phosphate synthase (EPSPS), but inhibition of this single enzyme of the shikimate pathway results in multiple phytotoxicity effects, both upstream and downstream from EPSPS, including loss of plant defenses against pathogens. Degradation of glyphosate in plants and microbes is predominantly by a glyphosate oxidoreductase to produce aminomethylphosphonic acid and glyoxylate and to a lesser extent by a C-P lyase to produce sarcosine and phosphate. Its effects on non-target plant species are generally less than that of many other herbicides, as it is not volatile and is generally sprayed in larger droplet sizes with a relatively low propensity to drift and is inactivated by tight binding to most soils. Some microbes, including fungal plant pathogens, have glyphosate-sensitive EPSPS. Thus, glyphosate can benefit GR crops by its activity on some plant pathogens. On the other hand, glyphosate can adversely affect some microbes that are beneficial to agriculture, such as Bradyrhizobium species, although GR crop yield data indicate that such an effect has been minor. Effects of glyphosate on microbes of agricultural soils are generally minor and transient, with other agricultural practices having much stronger effects.
Collapse
Affiliation(s)
- Stephen O Duke
- National Center for Natural Products Research, School of Pharmacy, University of Mississippi, University, MS, USA.
| |
Collapse
|
8
|
Bortolheiro FPDAP, Brunelli-Nascentes MC, Boaro CSF, Silva MDA. Can low doses of glyphosate stimulate common bean growth? JOURNAL OF ENVIRONMENTAL SCIENCE AND HEALTH. PART. B, PESTICIDES, FOOD CONTAMINANTS, AND AGRICULTURAL WASTES 2020; 56:150-162. [PMID: 33571041 DOI: 10.1080/03601234.2020.1853456] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Plant growth can be stimulated by low doses of glyphosate. The objective of this work was to evaluate the effect of low doses of glyphosate and sowing season on the growth of the early cycle common bean. Two experiments were conducted in the field, the first in the winter and the second in the wet season, with the early cycle common bean cultivar IAC Imperador. The experimental design was a randomized complete block design, consisting of low doses of glyphosate applied on phenological stage V4, with four replications. Environmental conditions, such as air temperature, interfered in the early cycle common bean response to low doses of glyphosate. In the winter season, a dose of 36 g a.e. ha-1 promoted growth in the common bean, and a dose of 7.2 g a.e. ha-1 improved the harvest index. In the wet season, there was no growth stimulus, and the harvest index increased with a dose of 36 g a.e. ha-1. The harvest index was the only characteristic improved in both seasons, but with different doses. Our study indicates that growth characteristics of early cycle common bean are stimulated by low doses of glyphosate, but this response is dependent on the growing environment.
Collapse
Affiliation(s)
- Fernanda Pacheco de Almeida Prado Bortolheiro
- Laboratório de Ecofisiologia Aplicada à Agricultura (LECA), Departamento de Produção Vegetal, Faculdade de Ciências Agronômicas, Universidade Estadual Paulista (UNESP), Botucatu, SP, Brazil
| | - Marcela Cristina Brunelli-Nascentes
- Laboratório de Ecofisiologia Aplicada à Agricultura (LECA), Departamento de Produção Vegetal, Faculdade de Ciências Agronômicas, Universidade Estadual Paulista (UNESP), Botucatu, SP, Brazil
| | | | - Marcelo de Almeida Silva
- Laboratório de Ecofisiologia Aplicada à Agricultura (LECA), Departamento de Produção Vegetal, Faculdade de Ciências Agronômicas, Universidade Estadual Paulista (UNESP), Botucatu, SP, Brazil
| |
Collapse
|
9
|
Pincelli-Souza RP, Bortolheiro FP, Carbonari CA, Velini ED, Silva MDA. Hormetic effect of glyphosate persists during the entire growth period and increases sugarcane yield. PEST MANAGEMENT SCIENCE 2020; 76:2388-2394. [PMID: 32027082 DOI: 10.1002/ps.5775] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/14/2019] [Revised: 01/31/2020] [Accepted: 02/06/2020] [Indexed: 06/10/2023]
Abstract
BACKGROUND Stimulation of plant growth by low doses of a toxic compound is defined as a hormetic effect. Exposure of plants to low doses of glyphosate can cause stimulatory effects on growth or other variables. Sugarcane is the major biofuel and sugar-production crop cultivated in Brazil, but its expansion to new areas is limited; therefore, there is a demand for new technologies to improve sugarcane production per unit area. The use of pesticides to stimulate growth through the hormetic effect might be a suitable strategy to increase sugarcane yields. The purpose of this research was to investigate the effect of a low dose of glyphosate on metabolic compound accumulation, leaf phosphorus (P) concentration, and morphological variables across a one-year sugarcane cycle, as well as to determine whether the glyphosate effect was sustained and effective in improving the yield and technological quality of the sugarcane at harvest. RESULTS The application of a low dose of glyphosate led to higher concentrations of shikimic acid and quinic acid, higher leaf P concentrations, and improved plant growth, yield, and technological quality of the sugarcane, by increasing the Brix% juice, pol% cane, total recoverable sugar, tons of culms per hectare, and tons of pol per hectare, relative to the results for an untreated control. CONCLUSIONS The increased growth stimuli, observed through several variables, promoted an improvement in sugarcane yield. Therefore, the application of a low dose of glyphosate to sugarcane is a promising practice for crop management. © 2020 Society of Chemical Industry.
Collapse
Affiliation(s)
| | - Fernanda Pap Bortolheiro
- School of Agricultural Sciences, Laboratory of Ecophysiology Applied to Agriculture, Department of Crop Production and Breeding, São Paulo State University, Botucatu, Brazil
| | - Caio A Carbonari
- School of Agricultural Sciences, Laboratory of Weed Science, Department of Crop Production and Breeding, São Paulo State University, Botucatu, Brazil
| | - Edivaldo D Velini
- School of Agricultural Sciences, Laboratory of Weed Science, Department of Crop Production and Breeding, São Paulo State University, Botucatu, Brazil
| | - Marcelo de A Silva
- School of Agricultural Sciences, Laboratory of Ecophysiology Applied to Agriculture, Department of Crop Production and Breeding, São Paulo State University, Botucatu, Brazil
| |
Collapse
|
10
|
de Moraes CP, de Brito IPFS, Tropaldi L, Carbonari CA, Velini ED. Hormetic effect of glyphosate on Urochloa decumbens plants. JOURNAL OF ENVIRONMENTAL SCIENCE AND HEALTH. PART. B, PESTICIDES, FOOD CONTAMINANTS, AND AGRICULTURAL WASTES 2019; 55:376-381. [PMID: 31880202 DOI: 10.1080/03601234.2019.1705114] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Urochloa decumbens plants may be reached by herbicide drift from applications of glyphosate from neighboring areas or by variations during applications. Considering the different phenological stages and size of plants in these areas, the amount of active ingredient that reaches the plants probably varies. The objective of this study was to evaluate the effects of the application of different doses of glyphosate on U. decumbens plants. Two greenhouse experiments were conducted with two replications at different times. The first experiment evaluated the biological response of U. decumbens plants to glyphosate doses (0, 2.81, 5.63, 11.25, 22.5, 45, 90, 180, 360, 720, and 1,440 g a.e. ha-1), with six replications. The second experiment evaluated the response of U. decumbens plants to the application of a selected low dose of 11.25 g a.e. ha-1. Evaluations of injury were performed at 0, 7, 14, and 21 days after application, and dry weight of plants was determined for each evaluation period. U. decumbens plants increased in dry weight when using the glyphosate dose of 11.25 g a.e. ha-1. However, plants had different responses to the application of this low dose. It can promote both stimulation and inhibition of plant growth.
Collapse
Affiliation(s)
| | | | - Leandro Tropaldi
- School of Agrarian Sciences and Technology, São Paulo State University, Dracena, Brazil
| | - Caio A Carbonari
- School of Agricultural Sciences, São Paulo State University, Botucatu, Brazil
| | - Edivaldo D Velini
- School of Agricultural Sciences, São Paulo State University, Botucatu, Brazil
| |
Collapse
|
11
|
Spaunhorst DJ, Todd JR, Hale AL. Sugarcane cultivar response to glyphosate and trinexapac-ethyl ripeners in Louisiana. PLoS One 2019; 14:e0218656. [PMID: 31220169 PMCID: PMC6586340 DOI: 10.1371/journal.pone.0218656] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2018] [Accepted: 06/06/2019] [Indexed: 11/28/2022] Open
Abstract
Sugarcane ripening in Louisiana is necessary to ensure adequate sucrose levels in early-season harvested sugarcane. The response of nine sugarcane cultivar's yield components to glyphosate and trinexapac-ethyl ripeners was determined in field trials. Glyphosate (210 g ae ha-1) and trinexapac-ethyl (200 g ai ha-1) treatments failed to increase sucrose yields more than non-ripened sugarcane. Sugarcane ripened with glyphosate or trinexapac-ethyl increased theoretical recoverable sucrose (TRS) 4 to 12% more than non-ripened sugarcane in seven out of nine cultivars, but greater TRS values were counterpoised by lower sugarcane stalk weight. An unintentional consequence of reduced late-season vegetative growth may benefit growers by allowing them to harvest more sugarcane hectares to meet their daily load quota and exposes fewer hectares to a freeze event. The cultivars HoCP 00-950, Ho 09-804, and HoCP 09-840 were not responsive to glyphosate or trinexapac-ethyl ripeners and should not be treated. A delayed harvest from 28 to 49 days after treatment (DAT) coincided with greater TRS values and 17% more sucrose yield.
Collapse
Affiliation(s)
- Douglas J. Spaunhorst
- United States Department of Agriculture, Agricultural Research Service, Sugarcane Research Unit, Houma, Louisiana, United States of America
| | - James R. Todd
- United States Department of Agriculture, Agricultural Research Service, Sugarcane Research Unit, Houma, Louisiana, United States of America
| | - Anna L. Hale
- United States Department of Agriculture, Agricultural Research Service, Sugarcane Research Unit, Houma, Louisiana, United States of America
| |
Collapse
|
12
|
Brito IP, Tropaldi L, Carbonari CA, Velini ED. Hormetic effects of glyphosate on plants. PEST MANAGEMENT SCIENCE 2018; 74:1064-1070. [PMID: 28094904 DOI: 10.1002/ps.4523] [Citation(s) in RCA: 74] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/05/2016] [Revised: 01/03/2017] [Accepted: 01/05/2017] [Indexed: 05/19/2023]
Abstract
As all herbicides act on pathways or processes crucial to plants, in an inhibitory or stimulatory way, low rates of any herbicide might be used to modulate plant growth, development, or plant composition. Glyphosate is the most used herbicide in the world, and very low rates of this herbicide can stimulate plant growth, an effect called hormesis. Several studies have shown that glyphosate applications at low rates can increase plant growth, induce shikimic acid accumulation, increase photosynthesis and stomatal opening, increase seed production, and shorten the plant life cycle. Low rates of glyphosate applied to leaves have been reported to cause one or more of these effects in an expanding group of species. Under field conditions, pesticide rates are not uniform, causing some target organisms to receive rates that are low enough to cause hormesis. Until the present, low rates of glyphosate have not been recommended as a growth stimulant for crops, because the hormetic dose can vary considerably, depending on many factors. The objective of the present review is to summarize and analyze existing information about the hormetic effects of glyphosate on plants, thus contributing to understanding how glyphosate hormesis takes place and evaluating the potential use of glyphosate to stimulate plant growth. © 2017 Society of Chemical Industry.
Collapse
Affiliation(s)
- Ivana Pfs Brito
- Department of Crop Science, São Paulo State University (UNESP), College of Agriculture, Botucatu/, SP, Brazil
| | - Leandro Tropaldi
- Department of Crop Science, São Paulo State University (UNESP), College of Agriculture, Botucatu/, SP, Brazil
| | - Caio A Carbonari
- Department of Crop Science, São Paulo State University (UNESP), College of Agriculture, Botucatu/, SP, Brazil
| | - Edivaldo D Velini
- Department of Crop Science, São Paulo State University (UNESP), College of Agriculture, Botucatu/, SP, Brazil
| |
Collapse
|
13
|
Nascentes RF, Carbonari CA, Simões PS, Brunelli MC, Velini ED, Duke SO. Low doses of glyphosate enhance growth, CO 2 assimilation, stomatal conductance and transpiration in sugarcane and eucalyptus. PEST MANAGEMENT SCIENCE 2018; 74:1197-1205. [PMID: 28485107 DOI: 10.1002/ps.4606] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/06/2017] [Revised: 04/21/2017] [Accepted: 05/03/2017] [Indexed: 05/19/2023]
Abstract
INTRODUCTION Sublethal doses of herbicides can enhance plant growth and stimulate other process, an effect known as hormesis. The magnitude of hormesis is dependent on the plant species, the herbicide and its dose, plant development stage and environmental parameters. Glyphosate hormesis is well established, but relatively little is known of the mechanism of this phenomenon. The objective of this study was to determine if low doses of glyphosate that cause growth stimulation in sugarcane and eucalyptus concomitantly stimulate CO2 assimilation. RESULTS Shoot dry weight in both species increased at both 40 and 60 days after application of 6.2 to 20.2 g a.e. ha-1 glyphosate. The level of enhanced shoot dry weight was 11 to 37%, depending on the time after treatment and the species. Concomitantly, CO2 assimilation, stomatal conductance and transpiration were increased by glyphosate doses similar to those that caused growth increases. CONCLUSION Glyphosate applied at low doses increased the dry weight of sugarcane and eucalyptus plants in all experiments. This hormetic effect was related to low dose effects on CO2 assimilation rate, stomatal conductance and transpiration rate, indicating that low glyphosate doses enhance photosynthesis of plants. © 2017 Society of Chemical Industry.
Collapse
Affiliation(s)
- Renan F Nascentes
- São Paulo State University (UNESP), Faculty of Agronomic Sciences, Laboratory of Weed Science, Botucatu, Brazil
| | - Caio A Carbonari
- São Paulo State University (UNESP), Faculty of Agronomic Sciences, Laboratory of Weed Science, Botucatu, Brazil
| | - Plinio S Simões
- São Paulo State University (UNESP), Faculty of Agronomic Sciences, Laboratory of Weed Science, Botucatu, Brazil
| | - Marcela C Brunelli
- São Paulo State University (UNESP), Faculty of Agronomic Sciences, Laboratory of Weed Science, Botucatu, Brazil
| | - Edivaldo D Velini
- São Paulo State University (UNESP), Faculty of Agronomic Sciences, Laboratory of Weed Science, Botucatu, Brazil
| | - Stephen O Duke
- USDA-ARS Natural Products Utilization Research Unit, University, MS, USA
| |
Collapse
|
14
|
Barroso AA, de S Costa MG, Neto NJ, Dos Santos JI, Balbuena TS, Carbonari CA, Alves PL. Protein identification before and after glyphosate exposure in Lolium multiflorum genotypes. PEST MANAGEMENT SCIENCE 2018; 74:1125-1133. [PMID: 29250898 DOI: 10.1002/ps.4831] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/05/2017] [Revised: 12/11/2017] [Accepted: 12/11/2017] [Indexed: 06/07/2023]
Abstract
BACKGROUND Weeds reduce crop yields, and among the methods used to control these plants, the use of chemicals is preferred. However, the repeated application of herbicides with the same mechanism of action selects for resistant populations. The aim of this study was to evaluate glyphosate resistance in Lolium multiflorum (Lam.) and relate the resistance to protein expression in the absence and presence of the herbicide using a metabolic-proteomic approach. RESULTS Glyphosate resistance was confirmed, with a sevenfold difference in resistance between susceptible and resistant genotypes. Among the possible mechanisms affecting resistance, mutations in the enzyme 5-enolpyruvylshikimate-3-phosphate synthase (EPSPS), herbicide differential translocation and overexpression of EPSPS are suggested. Susceptible plants had higher growth than did resistant plants in the absence of the herbicide, in addition to greater expression of protein groups related to photosynthesis and to tolerance to biotic and abiotic stresses. With application of glyphosate, resistant plants maintained their metabolism and began to express EPSPS and other candidate proteins related to herbicide resistance. CONCLUSIONS In the absence of glyphosate, the susceptible plants would replace the resistant plants over time, and abiotic or biotic stresses would accelerate this process. Resistance in plants resulted from a combination of target-site and non-target-site resistance mechanisms. We identified several candidate proteins that could be investigated in future studies on glyphosate resistance. © 2017 Society of Chemical Industry.
Collapse
Affiliation(s)
- Arthur Am Barroso
- Department of Biology Applied to Agriculture, School of Agricultural and Veterinarian Sciences, São Paulo State University, Jaboticabal, Brazil
| | - Marilia G de S Costa
- Department of Technology, School of Agricultural and Veterinarian Sciences, São Paulo State University, Jaboticabal, Brazil
| | - Nelson J Neto
- Department of Biology Applied to Agriculture, School of Agricultural and Veterinarian Sciences, São Paulo State University, Jaboticabal, Brazil
| | - Juciléia I Dos Santos
- Department of Biology Applied to Agriculture, School of Agricultural and Veterinarian Sciences, São Paulo State University, Jaboticabal, Brazil
| | - Tiago S Balbuena
- Department of Technology, School of Agricultural and Veterinarian Sciences, São Paulo State University, Jaboticabal, Brazil
| | - Caio A Carbonari
- Department of Crop Science, School of Agriculture, São Paulo State University, Botucatu, Brazil
| | - Pedro Lca Alves
- Department of Biology Applied to Agriculture, School of Agricultural and Veterinarian Sciences, São Paulo State University, Jaboticabal, Brazil
| |
Collapse
|
15
|
Affiliation(s)
- Regina G. Belz
- Agroecology Unit, Hans-Ruthenberg-Institute, University of Hohenheim, Stuttgart 70593, Germany
- National Center for Natural Products Research, Agricultural Research Service, United States Department of Agriculture, Oxford, Mississippi, United States
| | - Stephen O. Duke
- Agroecology Unit, Hans-Ruthenberg-Institute, University of Hohenheim, Stuttgart 70593, Germany
- National Center for Natural Products Research, Agricultural Research Service, United States Department of Agriculture, Oxford, Mississippi, United States
| |
Collapse
|