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Zheng C, Yang J, Wang Y, Ahmed W, Khan A, Li J, Weng J, Mehmood S, Li W. Comprehensive Assessment of Herbicide Toxicity on Navicula sp. Algae: Effects on Growth, Chlorophyll Content, Antioxidant System, and Lipid Metabolism. Mar Drugs 2024; 22:387. [PMID: 39330268 PMCID: PMC11433268 DOI: 10.3390/md22090387] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2024] [Revised: 08/24/2024] [Accepted: 08/27/2024] [Indexed: 09/28/2024] Open
Abstract
This study investigated the effects of herbicide exposure on Navicula sp. (MASCC-0035) algae, focusing on growth density, chlorophyll content, antioxidant system, and lipid metabolism. Navicula cultures were exposed to different concentrations of atrazine (ATZ), glyphosate (Gly), and acetochlor (ACT) for 96 h. Results showed a significant decrease in cell numbers, with higher herbicide concentrations having the most noticeable impacts. For instance, Gly-G2 had reduced cell populations by 21.00% at 96 h. Chlorophyll content varied, with Gly having a greater impact on chlorophyll a compared to ATZ and ACT. Herbicide exposure also affected the antioxidant system, altering levels of soluble sugar, soluble protein, and reactive oxygen species (ROS). Higher herbicide rates increased soluble sugar content (e.g., ATZ, Gly, and ACT-G2 had increased by 14.03%, 19.88%, and 19.83%, respectively, at 72 h) but decreased soluble protein content, notably in Gly-G2 by 11.40%, indicating cellular stress. Lipid metabolism analysis revealed complex responses, with changes in free proline, fatty acids, and lipase content, each herbicide exerting distinct effects. These findings highlight the multifaceted impacts of herbicide exposure on Navicula algae, emphasizing the need for further research to understand ecological implications and develop mitigation strategies for aquatic ecosystems.
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Affiliation(s)
- Chunyan Zheng
- College of Ecology, Hainan University, Haikou 570100, China
- Center for Eco-Environment Restoration Engineering of Hainan Province, Hainan University, Haikou 570228, China
| | - Jie Yang
- College of Ecology, Hainan University, Haikou 570100, China
- Center for Eco-Environment Restoration Engineering of Hainan Province, Hainan University, Haikou 570228, China
| | - Yunting Wang
- College of Ecology, Hainan University, Haikou 570100, China
- Center for Eco-Environment Restoration Engineering of Hainan Province, Hainan University, Haikou 570228, China
| | - Waqas Ahmed
- College of Ecology, Hainan University, Haikou 570100, China
- Center for Eco-Environment Restoration Engineering of Hainan Province, Hainan University, Haikou 570228, China
| | - Amir Khan
- Department of Medicine, Hainan Medical University, Haikou 571100, China
| | - Jiannan Li
- College of Ecology, Hainan University, Haikou 570100, China
- Center for Eco-Environment Restoration Engineering of Hainan Province, Hainan University, Haikou 570228, China
| | - Jiechang Weng
- Hainan Provincial Ecological and Environmental Monitoring Center, Haikou 570228, China
| | - Sajid Mehmood
- College of Ecology, Hainan University, Haikou 570100, China
- Center for Eco-Environment Restoration Engineering of Hainan Province, Hainan University, Haikou 570228, China
| | - Weidong Li
- College of Ecology, Hainan University, Haikou 570100, China
- Center for Eco-Environment Restoration Engineering of Hainan Province, Hainan University, Haikou 570228, China
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Bodean MF, Regaldo L, Mayora G, Mora C, Giri F, Gervasio S, Popielarz A, Repetti MR, Licursi M. Effects of herbicides and fertilization on biofilms of Pampean lotic systems: A microcosm study. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 917:170238. [PMID: 38280601 DOI: 10.1016/j.scitotenv.2024.170238] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/13/2023] [Revised: 12/02/2023] [Accepted: 01/15/2024] [Indexed: 01/29/2024]
Abstract
We experimentally assessed the impact of the application of herbicides and fertilizers derived from agricultural activity through the individual and simultaneous addition of glyphosate, atrazine, and nutrients (nitrogen 'N' and phosphorus 'P') on the biofilm community and their resilience when the experimental factors were removed. We hypothesize that i) the presence of agrochemicals negatively affects the biofilm community leading to the simplification of the community structure; ii) the individual or simultaneous addition of herbicides and nutrients produces differential responses in the biofilm; and iii) the degree of biofilm recovery differs according to the treatment applied. Environmentally relevant concentrations of glyphosate (0.7 mgL-1), atrazine (44 μgL-1), phosphorus (1 mg P L-1 [KH2PO4]), and nitrogen (3 mg N L-1[NaNO3]) were used. Chlorophyll a, ash-free dry weight, abundance of main biofilm groups and nutrient contents in biofilm were analyzed. At initial exposure time, all treatments were dominated by Cyanobacteria; through the exposure period, it was observed a progressive replacement by Bacillariophyceae. This replacement occurred on day 3 for the control and was differentially delayed in all herbicides and/or nutrient treatments in which the abundance of cyanobacteria remains significant yet in T5. A significant correlation was observed between the abundance of cyanobacteria and the concentration of atrazine, suggesting that this group is less sensitive than diatoms. The presence of agrochemicals exerted differential effects on the different algal groups. Herbicides contributed to phosphorus and nitrogen inputs. The most frequently observed interactions between experimental factors (nutrients and herbicides) was additivity excepting for species richness (antagonistic effect). In the final recovery time, no significant differences were found between the treatments and the control in most of the evaluated parameters, evincing the resilience of the community.
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Affiliation(s)
- María Florencia Bodean
- Instituto Nacional de Limnología 'INALI', Consejo Nacional de Investigaciones Científicas y Técnicas - Universidad Nacional del Litoral (CONICET-UNL), Ciudad Universitaria, Santa Fe, Argentina
| | - Luciana Regaldo
- Facultad de Humanidades y Ciencias (FHUC, UNL-CONICET), Ciudad Universitaria, Santa Fe, Argentina
| | - Gisela Mayora
- Instituto Nacional de Limnología 'INALI', Consejo Nacional de Investigaciones Científicas y Técnicas - Universidad Nacional del Litoral (CONICET-UNL), Ciudad Universitaria, Santa Fe, Argentina
| | - Celeste Mora
- Instituto Nacional de Limnología 'INALI', Consejo Nacional de Investigaciones Científicas y Técnicas - Universidad Nacional del Litoral (CONICET-UNL), Ciudad Universitaria, Santa Fe, Argentina
| | - Federico Giri
- Instituto Nacional de Limnología 'INALI', Consejo Nacional de Investigaciones Científicas y Técnicas - Universidad Nacional del Litoral (CONICET-UNL), Ciudad Universitaria, Santa Fe, Argentina; Facultad de Humanidades y Ciencias (FHUC, UNL-CONICET), Ciudad Universitaria, Santa Fe, Argentina
| | - Susana Gervasio
- Instituto Nacional de Tecnología (INTEC, CONICET - UNL), Parque Tecnológico Litoral Centro, Santa Fe, Argentina
| | - Andrea Popielarz
- Instituto Nacional de Tecnología (INTEC, CONICET - UNL), Parque Tecnológico Litoral Centro, Santa Fe, Argentina
| | | | - Magdalena Licursi
- Instituto Nacional de Limnología 'INALI', Consejo Nacional de Investigaciones Científicas y Técnicas - Universidad Nacional del Litoral (CONICET-UNL), Ciudad Universitaria, Santa Fe, Argentina.
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Sazykin I, Naumova E, Azhogina T, Klimova M, Karchava S, Khmelevtsova L, Chernyshenko E, Litsevich A, Khammami M, Sazykina M. Glyphosate effect on biofilms formation, mutagenesis and stress response of E. сoli. JOURNAL OF HAZARDOUS MATERIALS 2024; 461:132574. [PMID: 37748310 DOI: 10.1016/j.jhazmat.2023.132574] [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: 04/14/2023] [Revised: 08/12/2023] [Accepted: 09/16/2023] [Indexed: 09/27/2023]
Abstract
Glyphosate is the most widely used herbicide in the world. There is still no complete clarity about the degree of its genotoxicity and mutagenicity. In addition, its effect on bacterial biofilms, the main life form of soil microbial communities, has not been adequately studied. Toxicity and mutagenicity, as well as changes in the bacterial biofilm biomass, physiological activity, and the number of living cells in its composition in the presence of glyphosate were assessed using the Escherichia coli model. To assess damage to cellular components under the action of this pesticide, luminescent whole-cell bacterial lux-biosensors were used. Changes in the level of mutagenesis were studied by the method of rifampicin mutants. High integral toxicity of glyphosate, the average level of increased oxidative stress and protein damage were shown with the help of bacterial biosensors. All the studied concentrations of the pesticide completely or partially suppress the matrix and structure of the E. coli CDC F-50 biofilm formation, as well as the bacterial cells metabolic activity in the biofilm. At the concentrations of 6.7 and 0.67 g/L, glyphosate suppresses mutagenesis, probably due to general suppression of metabolism, and at the concentration of 0.0067 g/L, it enhances mutagenesis by six times compared with the spontaneous level. Suppression of bacterial biofilms formation, toxic effects on microorganisms, and mutagenesis enhancement by glyphosate can lead to negative consequences for natural microbiomes.
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Affiliation(s)
- Ivan Sazykin
- Southern Federal University, 194/2 Stachki Avenue, Rostov-on-Don 344090, Russian Federation
| | - Ekaterina Naumova
- Southern Federal University, 194/2 Stachki Avenue, Rostov-on-Don 344090, Russian Federation
| | - Tatiana Azhogina
- Southern Federal University, 194/2 Stachki Avenue, Rostov-on-Don 344090, Russian Federation
| | - Maria Klimova
- Southern Federal University, 194/2 Stachki Avenue, Rostov-on-Don 344090, Russian Federation
| | - Shorena Karchava
- Southern Federal University, 194/2 Stachki Avenue, Rostov-on-Don 344090, Russian Federation
| | - Ludmila Khmelevtsova
- Southern Federal University, 194/2 Stachki Avenue, Rostov-on-Don 344090, Russian Federation
| | - Elena Chernyshenko
- Southern Federal University, 194/2 Stachki Avenue, Rostov-on-Don 344090, Russian Federation
| | - Alla Litsevich
- Southern Federal University, 194/2 Stachki Avenue, Rostov-on-Don 344090, Russian Federation
| | - Margarita Khammami
- Southern Federal University, 194/2 Stachki Avenue, Rostov-on-Don 344090, Russian Federation
| | - Marina Sazykina
- Southern Federal University, 194/2 Stachki Avenue, Rostov-on-Don 344090, Russian Federation.
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Pires NL, de Araújo EP, Oliveira-Filho EC, Caldas ED. An ultrasensitive LC-MS/MS method for the determination of glyphosate, AMPA and glufosinate in water - analysis of surface and groundwater from a hydrographic basin in the Midwestern region of Brazil. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 875:162499. [PMID: 36871736 DOI: 10.1016/j.scitotenv.2023.162499] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/05/2022] [Revised: 02/02/2023] [Accepted: 02/23/2023] [Indexed: 06/18/2023]
Abstract
The intensive use of glyphosate around the world in the last few decades demands constant monitoring of this compound and its metabolite in aquatic compartments. This work aimed to develop a sensitive method for the analysis of glyphosate, AMPA and glufosinate in water by liquid chromatography/tandem mass spectrometry (LC-MS/MS). The method involves analyte concentration by lyophilization (20×) and direct injection on the LC-MS/MS, and was satisfactorily validated at a LOQ of 0.0025 μg L-1. A total of 142 samples of surface and groundwater collected during the 2021/2022 dry and rainy seasons in the Rio Preto Hydrographic Basin were analyzed. All the 52 groundwater samples were positive for glyphosate (up to 1.5868 μg L-1, dry season) and AMPA (up to 0.2751 μg L-1, dry season). A total of 27 of the 90 surface water samples were positive for glyphosate (up to 0.0236 μg L-1), and 31 samples for AMPA (up to 0.0086 μg L-1), of which over 70 % collected during the dry season. Glufosinate was detected in only five samples, four in groundwater (up to 0.0256 μg L-1). The levels found in the samples are much lower than the maximum levels established by the Brazilian legislation for glyphosate and/or AMPA and lower than the most critical toxicological endpoints for aquatic organisms. However, constant monitoring is necessary, demanding sensitive methods to allow the detection of the very low levels of these pesticides in water.
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Affiliation(s)
- Nayara Luiz Pires
- Federal Institute of Goiás, Formosa, GO, Brazil; University of Brasília, Faculty of Health Sciences, Laboratory of Toxicology, Brasilia, DF, Brazil
| | - Esmeralda Pereira de Araújo
- University of Brasília, Faculty of Health Sciences, Laboratory of Toxicology, Brasilia, DF, Brazil; Brazilian Agricultural Research Corporation, Embrapa Cerrados, Planaltina, DF, Brazil
| | | | - Eloisa Dutra Caldas
- University of Brasília, Faculty of Health Sciences, Laboratory of Toxicology, Brasilia, DF, Brazil.
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Lian CY, Wei S, Li ZF, Zhang SH, Wang ZY, Wang L. Glyphosate-induced autophagy inhibition results in hepatic steatosis via mediating epigenetic reprogramming of PPARα in roosters. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2023; 324:121394. [PMID: 36906059 DOI: 10.1016/j.envpol.2023.121394] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/15/2023] [Revised: 02/15/2023] [Accepted: 03/02/2023] [Indexed: 06/18/2023]
Abstract
Glyphosate (Gly) is the most widely used herbicide with well-defined hepatotoxic effects, but the underlying mechanisms of Gly-induced hepatic steatosis remain largely unknown. In this study, a rooster model combined with primary chicken embryo hepatocytes was established to dissect the progresses and mechanisms of Gly-induced hepatic steatosis. Data showed that Gly exposure caused liver injury with disrupted lipid metabolism in roosters, manifested by significant serum lipid profile disorder and hepatic lipid accumulation. Transcriptomic analysis revealed that PPARα and autophagy-related pathways played important roles in Gly-induced hepatic lipid metabolism disorders. Further experimental results suggested that autophagy inhibition was involved in Gly-induced hepatic lipid accumulation, which was confirmed by the effect of classic autophagy inducer rapamycin (Rapa). Moreover, data substantiated that Gly-mediated autophagy inhibition caused nuclear increase of HDAC3, which altered epigenetic modification of PPARα, leading to fatty acid oxidation (FAO) inhibition and subsequently lipid accumulation in the hepatocytes. In summary, this study provides novel evidence that Gly-induced autophagy inhibition evokes the inactivation of PPARα-mediated FAO and concomitant hepatic steatosis in roosters by mediating epigenetic reprogramming of PPARα.
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Affiliation(s)
- Cai-Yu Lian
- College of Animal Science and Veterinary Medicine, Shandong Provincial Key Laboratory of Animal Biotechnology and Disease Control and Prevention, Shandong Provincial Engineering Technology Research Center of Animal Disease Control and Prevention, Shandong Agricultural University, 61 Daizong Street, Tai'an City, Shandong Province, 271018, China
| | - Sheng Wei
- Experimental Center, Key Laboratory of Traditional Chinese Medicine Classical Theory, Ministry of Education, Shandong Provincial Key Laboratory of Traditional Chinese Medicine for Basic Research, Shandong University of Traditional Chinese Medicine, Ji'nan, 250355, China
| | - Zi-Fa Li
- Experimental Center, Key Laboratory of Traditional Chinese Medicine Classical Theory, Ministry of Education, Shandong Provincial Key Laboratory of Traditional Chinese Medicine for Basic Research, Shandong University of Traditional Chinese Medicine, Ji'nan, 250355, China
| | - Shu-Hui Zhang
- College of Animal Science and Veterinary Medicine, Shandong Provincial Key Laboratory of Animal Biotechnology and Disease Control and Prevention, Shandong Provincial Engineering Technology Research Center of Animal Disease Control and Prevention, Shandong Agricultural University, 61 Daizong Street, Tai'an City, Shandong Province, 271018, China
| | - Zhen-Yong Wang
- College of Animal Science and Veterinary Medicine, Shandong Provincial Key Laboratory of Animal Biotechnology and Disease Control and Prevention, Shandong Provincial Engineering Technology Research Center of Animal Disease Control and Prevention, Shandong Agricultural University, 61 Daizong Street, Tai'an City, Shandong Province, 271018, China
| | - Lin Wang
- College of Animal Science and Veterinary Medicine, Shandong Provincial Key Laboratory of Animal Biotechnology and Disease Control and Prevention, Shandong Provincial Engineering Technology Research Center of Animal Disease Control and Prevention, Shandong Agricultural University, 61 Daizong Street, Tai'an City, Shandong Province, 271018, China.
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Hervé V, Sabatier P, Lambourdière J, Poulenard J, Lopez PJ. Temporal pesticide dynamics alter specific eukaryotic taxa in a coastal transition zone. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 866:161205. [PMID: 36603640 DOI: 10.1016/j.scitotenv.2022.161205] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/01/2022] [Revised: 12/02/2022] [Accepted: 12/22/2022] [Indexed: 06/17/2023]
Abstract
Land use change and anthropogenic forcing can drastically alter the rates and patterns of sediment transport and modify biodiversity and ecosystem functions in coastal transition zones, such as the coastal ecosystems. Molecular studies of sediment extracted DNAs provide information on currently living organisms within the upper layers or buried from various periods of time, but might also provide knowledge on species dynamics, replacement and turnover. In this study, we evaluated the eukaryotic communities of a marine core that present a shift in soil erosion that was linked to glyphosate usage and correlated to chlordecone resurgence since 2000. We show differences in community composition between samples from the second half of the last century and those from the last two decades. Temporal analyses of the relative abundance, alpha diversity, and beta diversity for the two periods demonstrated different temporal dynamics depending on the considered taxonomic group. In particular, Ascomycetes showed a decrease in abundance over the most recent period associated with changes in community membership but not community structure. Two photosynthetic groups, Bacillariophyceae and Prasinophytes clade VII, showed a different pattern with an increase in abundance since the beginning of the 21st century with a decrease in diversity and evenness to form more heterogeneous communities dominated by a few abundant OTUs. Altogether, our data reveal that agricultural usages such as pesticide use can have long-term and species-dependent implications for microeukaryotic coastal communities on a tropical island.
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Affiliation(s)
- Vincent Hervé
- Université Paris-Saclay, INRAE, AgroParisTech, UMR SayFood, 91120 Palaiseau, France
| | - Pierre Sabatier
- EDYTEM, Université Savoie Mont Blanc, CNRS, UMR-5204, 73370 Le Bourget-Du-Lac, France
| | - Josie Lambourdière
- Biologie des ORganismes et Ecosystèmes Aquatiques (BOREA), Muséum National d'Histoire Naturelle, Centre National de la Recherche Scientifique UMR-8067, Sorbonne Université, Institut de Recherche pour le Développement, Université de Caen Normandie, Université des Antilles, 75005 Paris, France
| | - Jérôme Poulenard
- EDYTEM, Université Savoie Mont Blanc, CNRS, UMR-5204, 73370 Le Bourget-Du-Lac, France
| | - Pascal Jean Lopez
- Biologie des ORganismes et Ecosystèmes Aquatiques (BOREA), Muséum National d'Histoire Naturelle, Centre National de la Recherche Scientifique UMR-8067, Sorbonne Université, Institut de Recherche pour le Développement, Université de Caen Normandie, Université des Antilles, 75005 Paris, France.
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Lima IB, Boëchat IG, Fernandes MD, Monteiro JAF, Rivaroli L, Gücker B. Glyphosate pollution of surface runoff, stream water, and drinking water resources in Southeast Brazil. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:27030-27040. [PMID: 36376647 DOI: 10.1007/s11356-022-24167-2] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/22/2021] [Accepted: 11/08/2022] [Indexed: 06/16/2023]
Abstract
Glyphosate-based herbicides can be harmful to the environment and human health. Especially in developing countries, these herbicides are often used indiscriminately in agricultural and urban areas. Here, we optimized a simple and efficient flow injection-based spectrophotometric method to monitor environmentally relevant glyphosate concentrations in surface waters. The method was then used to assess the environmental mobility of glyphosate in Southeast Brazil by monitoring surface runoff from experimental agricultural soil plots that received glyphosate applications in 2015. Further, water samples from low-order streams were collected in five agricultural, urban, and natural areas, as well as from the 5th-order Rio das Mortes during the rainy season. Finally, 20 drinking water sources were sampled in urban, rural, and agricultural areas. Runoff from reference plots without glyphosate application showed concentrations below the method's detection limit of 0.49 mg.L-1, whereas runoff from plots with standard glyphosate application had concentrations between 1.24 and 6.1 mg.L-1. Similarly, concentrations in natural stream water were below the detection limit, whereas agricultural streams had concentrations of up to 3.7 mg.L-1 (average: 0.97 mg.L-1). In an agricultural stream monitored weekly, concentration peaks were observed after glyphosate applications by farmers, and concentrations were correlated to stream discharge. Urban streams had concentrations of up to 5.8 mg.L-1 (average: 2.6 mg.L-1), but samples from the catchment's major river were mostly below detection limits, illustrating the dilution of urban and agricultural runoff in high-order rivers. In the sampled drinking water resources, glyphosate pollution occurred mainly in the rainy season, with detectable concentrations between 0.5 and 8.7 mg.L-1 in 80% of the sampled drinking water sources. In conclusion, our results suggest considerable environmental mobility of glyphosate in the studied Southeast Brazilian catchment. Substantial pollution, well above national and international limits, was detected in surface runoff, stream water, and drinking water resources.
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Affiliation(s)
- Igor B Lima
- Department of Geosciences, Federal University of São João del-Rei, São João del-Rei, MG, Brazil
| | - Iola G Boëchat
- Department of Geosciences, Federal University of São João del-Rei, São João del-Rei, MG, Brazil
| | - Marco D Fernandes
- Department of Geosciences, Federal University of São João del-Rei, São João del-Rei, MG, Brazil
| | | | - Luciano Rivaroli
- Department of Natural Sciences, Federal University of São João del-Rei, São João del-Rei, MG, Brazil
| | - Björn Gücker
- Department of Geosciences, Federal University of São João del-Rei, São João del-Rei, MG, Brazil.
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van Wyk JW, Adams JB, von der Heyden S. Conservation implications of herbicides on seagrasses: sublethal glyphosate exposure decreases fitness in the endangered Zostera capensis. PeerJ 2022; 10:e14295. [PMID: 36405027 PMCID: PMC9673766 DOI: 10.7717/peerj.14295] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2022] [Accepted: 10/03/2022] [Indexed: 11/16/2022] Open
Abstract
Worldwide seagrass populations are in decline, calling for urgent measures in their conservation. Glyphosate is the most widely used herbicide globally, leading to increasing concern about its ecological impact, yet little is known about the prevalence or impact of glyphosate on seagrasses. In this study, we investigated the effect of sublethal glyphosate exposure on the endangered seagrass, Zostera capensis, to identify effects on growth, photosynthetic pigments and leaf morphology as measures of seagrass fitness. Seagrasses were exposed to a single dose of a commercial glyphosate formulation-ranging between 250 to 2,200 µg/L. After three weeks, the median leaf area decreased by up to 27%, with reductions of up to 31% in above ground biomass (p < 0.05). Photosynthetic pigment concentration showed no significant difference between groups. The observed effects on biomass and leaf area were seen at glyphosate levels below the regulatory limits set for surface water by several countries and may negatively affect the long-term resilience of this ecosystem engineer to additional stressors, such as those associated with climate change and anthropogenic pollution. As such, glyphosates and other herbicides that are washed into estuarine and marine ecosystems, pose a significant threat to the persistence of seagrasses and are important factors to consider in seagrass conservation, management and restoration efforts.
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Affiliation(s)
- Johanna W. van Wyk
- Department of Botany and Zoology, Stellenbosch University, Matieland, South Africa
| | - Janine B. Adams
- Institute for Coastal and Marine Research, Department of Botany, Nelson Mandela University, Gqeberha, South Africa
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9
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Qu M, Wang L, Xu Q, An J, Mei Y, Liu G. Influence of glyphosate and its metabolite aminomethylphosphonic acid on aquatic plants in different ecological niches. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2022; 246:114155. [PMID: 36206639 DOI: 10.1016/j.ecoenv.2022.114155] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/15/2022] [Revised: 09/29/2022] [Accepted: 10/03/2022] [Indexed: 06/16/2023]
Abstract
Glyphosate and its metabolite aminomethylphosphonic acid (AMPA) draw great concern due to their potential threat to aquatic ecosystems. The individual and combined effects of glyphosate and AMPA on aquatic plants in different ecological niches need to be explored. This study aimed to investigate the ecotoxicity of glyphosate and AMPA on the emergent macrophyte Acorus calamus, phytoplankton Chlorella vulgaris, and submerged macrophyte Vallisneria natans after their exposure to glyphosate and AMPA alone and to their mixture. Medium and low concentrations of glyphosate (≤ 0.5 mg L-1) significantly inhibited the growth of V. natans and promoted the growth of C. vulgaris (P < 0.05) but had no significant effect on the growth of A. calamus (P > 0.05). AMPA (≤ 5.0 mg L-1) did not significantly influence the relative growth rate (except C. vulgaris) or malonaldehyde levels but significantly altered the expression levels of chlorophyll-related genes and superoxide dismutase [Cu-Zn] genes in the aquatic plants examined. AMPA mainly affected the oxidative phosphorylation pathway in V. natans and not those in other two plants, indicating that V. natans was more sensitive to AMPA-induced oxidative damage. Moreover, antagonistic effects on plant growth were observed when plants were exposed to low concentrations of glyphosate + AMPA (≤ 0.1 + 0.1 mg L-1). When the concentration of glyphosate + AMPA reached 0.5 + 0.5 and 5.0 + 5.0 mg L-1, the growth of the submerged macrophyte was additively or synergistically inhibited, but the growth of the emergent macrophyte and phytoplankton was antagonistically inhibited. Our results indicated that both the individual and combined effects of glyphosate and AMPA might alter the vertical structure of shallow lakes and accelerate the conversion of shallow lakes from grass-based to algal-based lakes.
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Affiliation(s)
- Mengjie Qu
- School of Chemical and Environmental Engineering, Wuhan Polytechnic University, Wuhan 430023, China; Laboratory of Eco-Environmental Engineering Research, Microelement Research Centre, Huazhong Agricultural University, Wuhan 430070, China
| | - Longtao Wang
- CCCC Second Harbor Engineering Company LTD, Wuhan 430040, China
| | - Qiang Xu
- BOE Environmental Energy Technology Company LTD, Beijing 100176, China
| | - Jiaqi An
- Laboratory of Eco-Environmental Engineering Research, Microelement Research Centre, Huazhong Agricultural University, Wuhan 430070, China
| | - Yunjun Mei
- School of Chemical and Environmental Engineering, Wuhan Polytechnic University, Wuhan 430023, China.
| | - Guanglong Liu
- Laboratory of Eco-Environmental Engineering Research, Microelement Research Centre, Huazhong Agricultural University, Wuhan 430070, China.
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Li Q, Wang B, Zhang Q, Huang J, Ding S, Xie H, Feng Y. Water quality and periphyton functional response to input of dissolved manure-derived hydrochars (DHCs). JOURNAL OF ENVIRONMENTAL MANAGEMENT 2022; 318:115541. [PMID: 35777158 DOI: 10.1016/j.jenvman.2022.115541] [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: 02/17/2022] [Revised: 06/02/2022] [Accepted: 06/13/2022] [Indexed: 06/15/2023]
Abstract
Dissolved organic matter (DOM) plays a critical role in the global carbon cycle and provides food and energy for aquatic organisms. Recently, hydrochar, as a solid carbonaceous substance derived from hydrothermal carbonization, has been increasingly used as a soil amendment. Upon entering the soil, dissolved components (DHCs) were released from hydrochar as exogenous DOM, finally entering the aquatic ecosystems by runoff, which participates in environmental geochemical processes. However, relevant reports revealing the response of the aquatic ecosystem to the input of DHCs remain insufficiently elucidated. For the first time, the fundamental features of DHCs and their influence on water quality and aquatic biological function were investigated in this study. DHCs at 260 °C (DHC260) had lower yields, a greater [C/N], worse biodegradability, and larger humic acid relative amounts than did DHCs at 180 °C (DHC180). The DHC structural alterations in periphyton-incubated aquatic ecosystems suggested that protein substances were more easily degraded or assimilated by periphyton, especially for DHC180, with rates of decrease of 34.5-63.5%. The increased chemical oxygen demand (COD) degradation in the DHC260 treatments was most likely due to humic acid substances with higher COD equivalents. Furthermore, DHC260 caused phosphorus to accumulate in periphyton, reducing aquatic phosphorus concentration. Notably, the abundances of Flavobacteria and Cyanobacteria associated with water blooms increased 12.7-25.5- and 1.3-8.3-fold, respectively; consequently, the promotional impact of DHCs on algal blooms should be considered. This result extends the nonnegligible role of DHCs in aquatic ecosystems and underlines the need to regulate the hydrochar application process.
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Affiliation(s)
- Qiaoqiao Li
- Jiangsu Key Laboratory of Chemical Pollution Control and Resources Reuse, School of Environmental and Biological Engineering, Nanjing University of Science and Technology, Nanjing, 210094, China
| | - Bingyu Wang
- Jiangsu Key Laboratory of Chemical Pollution Control and Resources Reuse, School of Environmental and Biological Engineering, Nanjing University of Science and Technology, Nanjing, 210094, China
| | - Qiuyue Zhang
- Jiangsu Key Laboratory of Chemical Pollution Control and Resources Reuse, School of Environmental and Biological Engineering, Nanjing University of Science and Technology, Nanjing, 210094, China; Key Laboratory of Agro-Environment in Downstream of Yangtze Plain, National Agricultural Experiment Station for Agricultural Environment, Ministry of Agriculture and Rural Affairs, Institute of Agricultural Resources and Environment, Jiangsu Academy of Agricultural Sciences, Nanjing, 210014, China
| | - Junxia Huang
- Jiangsu Key Laboratory of Chemical Pollution Control and Resources Reuse, School of Environmental and Biological Engineering, Nanjing University of Science and Technology, Nanjing, 210094, China
| | - Shudong Ding
- Key Laboratory of Agro-Environment in Downstream of Yangtze Plain, National Agricultural Experiment Station for Agricultural Environment, Ministry of Agriculture and Rural Affairs, Institute of Agricultural Resources and Environment, Jiangsu Academy of Agricultural Sciences, Nanjing, 210014, China; School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang, 212001, China
| | - Huifang Xie
- Jiangsu Key Laboratory of Chemical Pollution Control and Resources Reuse, School of Environmental and Biological Engineering, Nanjing University of Science and Technology, Nanjing, 210094, China.
| | - Yanfang Feng
- Key Laboratory of Agro-Environment in Downstream of Yangtze Plain, National Agricultural Experiment Station for Agricultural Environment, Ministry of Agriculture and Rural Affairs, Institute of Agricultural Resources and Environment, Jiangsu Academy of Agricultural Sciences, Nanjing, 210014, China; School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang, 212001, China
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11
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Zabaloy MC, Allegrini M, Hernandez Guijarro K, Behrends Kraemer F, Morrás H, Erijman L. Microbiomes and glyphosate biodegradation in edaphic and aquatic environments: recent issues and trends. World J Microbiol Biotechnol 2022; 38:98. [PMID: 35478266 DOI: 10.1007/s11274-022-03281-w] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2022] [Accepted: 04/08/2022] [Indexed: 12/11/2022]
Abstract
Glyphosate (N-(phosphonomethyl)glycine) has emerged as the top-selling herbicide worldwide because of its versatility in controlling annual and perennial weeds and the extensive use of glyphosate-resistant crops. Concerns related to the widespread use of glyphosate and its ubiquitous presence in the environment has led to a large number of studies and reviews, which examined the toxicity and fate of glyphosate and its major metabolite, aminomethylphosphonic acid (AMPA) in the environment. Because the biological breakdown of glyphosate is most likely the main elimination process, the biodegradation of glyphosate has also been the object of abundant experimental work. Importantly, glyphosate biodegradation in aquatic and soil ecosystems is affected not only by the composition and the activity of microbial communities, but also by the physical environment. However, the interplay between microbiomes and glyphosate biodegradation in edaphic and aquatic environments has rarely been considered before. The proposed minireview aims at filling this gap. We summarize the most recent work exploring glyphosate biodegradation in natural aquatic biofilms, the biological, chemical and physical factors and processes playing on the adsorption, transport and biodegradation of glyphosate at different levels of soil organization and under different agricultural managements, and its impact on soil microbial communities.
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Affiliation(s)
- María Celina Zabaloy
- Centro de Recursos Naturales Renovables de la Zona Semiárida (CERZOS), Universidad Nacional del Sur (UNS)-CONICET, Bahía Blanca, Argentina
- Departamento de Agronomía, Universidad Nacional del Sur, Bahía Blanca, Argentina
| | - Marco Allegrini
- Instituto de Investigaciones en Ciencias Agrarias de Rosario (IICAR), CONICET, Universidad Nacional de Rosario, Zavalla, Argentina
| | - Keren Hernandez Guijarro
- Instituto Nacional de Tecnología Agropecuaria (INTA), Unidad Integrada Estación Experimental Agropecuaria Balcarce, Balcarce, Argentina
| | - Filipe Behrends Kraemer
- Cátedra de Manejo y Conservación de Suelos, Facultad de Agronomía, Universidad de Buenos Aires, Buenos Aires, Argentina
- Instituto de Suelos-CIRN-INTA, Hurlingham, Argentina
| | - Héctor Morrás
- Instituto de Suelos-CIRN-INTA, Hurlingham, Argentina
- Facultad de Ciencias Agrarias y Veterinaria, Universidad del Salvador, Pilar, Argentina
| | - Leonardo Erijman
- Instituto de Investigaciones en Ingeniería Genética y Biología Molecular "Dr Héctor N. Torres" (INGEBI-CONICET), Vuelta de Obligado 2490, C1428ADN, Buenos Aires, Argentina.
- Departamento de Fisiología, Biología Molecular y Celular, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Buenos Aires, Argentina.
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12
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Wang S, Yao Y, Zhao J, Han X, Chai C, Dai P. A novel electrochemical sensor for glyphosate detection based on Ti3C2Tx/Cu-BTC nanocomposite. RSC Adv 2022; 12:5164-5172. [PMID: 35425566 PMCID: PMC8981420 DOI: 10.1039/d1ra08064d] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2021] [Accepted: 02/01/2022] [Indexed: 02/01/2023] Open
Abstract
The copper benzene-1,3,5-tricarboxylate (Cu-BTC) with outstanding chemical and physical properties, is a novel and promising material in the field of electrochemical sensing. However, it has significant limitations for direct application in electrochemical sensing due to the relatively weak conductivity of Cu-BTC. Here, the conductivity of Cu-BTC was improved by loading Cu-BTC onto two-dimensional Ti3C2Tx nanosheets with high conductivity. Thanks to the synergistic effect produced by the high conductivity of Ti3C2Tx and the unique catalytic activity of Cu-BTC, the Ti3C2Tx/Cu-BTC nanocomposite exhibits excellent sensing performance for glyphosate, with a low limit of detection (LOD) of 2.6 × 10−14 M and wider linear sensing range of 1.0 × 10−13 to 1.0 × 10−6 M. Moreover, the electrochemical sensor based on Ti3C2Tx/Cu-BTC also shows excellent selectivity, good reproducibility and stability. The Ti3C2Tx/Cu-BTC nanocomposite exhibits excellent sensing performance for glyphosate with a low detection limit and wide detection range. Moreover, the electrochemical sensor also shows excellent selectivity, good reproducibility and stability.![]()
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Affiliation(s)
- Shan Wang
- School of Materials Science and Engineering, Beijing Institute of Technology, Beijing 100081, China
| | - Yanqing Yao
- School of Materials Science and Engineering, Beijing Institute of Technology, Beijing 100081, China
| | - Jia Zhao
- School of Materials Science and Engineering, Beijing Institute of Technology, Beijing 100081, China
| | - Xuhui Han
- School of Materials Science and Engineering, Beijing Institute of Technology, Beijing 100081, China
| | - Chunpeng Chai
- School of Materials Science and Engineering, Beijing Institute of Technology, Beijing 100081, China
| | - Pei Dai
- Beijing Key Laboratory of Radiation Advanced Materials, Beijing Research Center for Radiation Application Co.,Ltd., Beijing 100015, China
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