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Abreu FEL, Batista RM, Zanardi-Lamardo E, Yogui GT, Amado LL, Ribeiro-Brasil DRG, Franco TCRDS, Viana JLM, Fernandez MA, Castro IB, Fillmann G. Antifouling paint residues in areas impacted by maritime activities along 6000 km of Brazilian coastline. THE SCIENCE OF THE TOTAL ENVIRONMENT 2025; 981:179559. [PMID: 40344903 DOI: 10.1016/j.scitotenv.2025.179559] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/21/2024] [Revised: 04/26/2025] [Accepted: 04/26/2025] [Indexed: 05/11/2025]
Abstract
Contamination by antifouling paint residues (TBT, DBT, MBT, diuron, Irgarol, chlorothalonil, dichlofluanid, DCOIT, and antifouling paint particles (APPs)) was assessed in 113 sediments from 10 regions under the influence of maritime activities (boats/shipyard, traffic zones, marina, and port) along the Brazilian coast. The relatively low levels of butyltins (BTs) in sediments associated with commercial ports (mean of 25 ng Sn g-1), in addition to butyltin degradation indexes pointing to old TBT inputs, confirmed the effectiveness of the IMO Antifouling Systems Convention. However, hotspots of TBT were observed at boat/shipyards (mean BTs of 349.9 ng Sn g-1) and marinas (mean BTs of 118.5 ng Sn g-1) probably due to the presence of APPs. DCOIT, followed by diuron, were the most frequently detected booster biocides (BB), reflecting their current use in antifouling paints. Moreover, APPs emerged as a relevant source of contamination due to high associated concentrations of antifouling biocides (i.e., DCOIT - 43,139 ng g-1; TBT - 311,474 ng Sn g-1). Approximately 75 % of the assessed sites presented concentrations of of TBT and/or BB above safe values that potentially trigger effects on organisms. In summary, contamination by antifouling paint residues was widespread along the Brazilian coastal areas under the influence of maritime activities. Thus, environmental and governmental agencies must act and seek regulatory and protective measures to reduce potential risks to aquatic organisms.
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Affiliation(s)
- Fiamma E L Abreu
- PPG em Oceanologia, Universidade Federal do Rio Grande (PPGO-FURG), Av. Itália km 8 s/n, Campus Carreiros, 96203-900 Rio Grande, RS, Brazil; Departamento de Oceanografia, Universidade Federal de Pernambuco (UFPE), Av Arquitetura s/n, Recife, PE 50740-550, Brazil
| | - Rodrigo Moço Batista
- Instituto de Oceanografia, Universidade Federal do Rio Grande (IO -FURG), Av. Itália km 8 s/n, Campus Carreiros, 96203-900 Rio Grande, RS, Brazil; PPG em Química Tecnológica e Ambiental, Universidade Federal do Rio Grande (PPGQTA-FURG), Av. Itália km 8 s/n, Campus Carreiros, 96203-900 Rio Grande, RS, Brazil
| | - Eliete Zanardi-Lamardo
- Departamento de Oceanografia, Universidade Federal de Pernambuco (UFPE), Av Arquitetura s/n, Recife, PE 50740-550, Brazil
| | - Gilvan Takeshi Yogui
- Departamento de Oceanografia, Universidade Federal de Pernambuco (UFPE), Av Arquitetura s/n, Recife, PE 50740-550, Brazil
| | - Lílian Lund Amado
- Instituto de Ciências Biológicas, Laboratório de Ecotoxicologia e Laboratório de Pesquisas em Monitoramento Ambiental Marinho, Universidade Federal do Pará (UFPA), PA 66075-110, Brazil
| | - Danielle R G Ribeiro-Brasil
- Instituto de Ciências Biológicas e da Saúde (ICBS), Laboratório de Ecologia e Conservação de Ecossitemas Aquáticos (LECEA), Universidade Federal de Mato Grosso (UFMT), Campus Universitário do Araguaia, Pontal do Araguaia, MT 78698-000, Brazil
| | | | - José Lucas Martins Viana
- Environmental Studies Center, São Paulo State University (UNESP), Av. 24-A, 1515, 13506-900 Rio Claro, SP, Brazil
| | - Marcos Antônio Fernandez
- Departamento de Oceanografia Química, Universidade Estadual do Rio de Janeiro (UERJ), 20550-900 Rio de Janeiro, RJ, Brazil
| | - Italo Braga Castro
- Departamento de Oceanografia, Universidade Federal de Pernambuco (UFPE), Av Arquitetura s/n, Recife, PE 50740-550, Brazil; Instituto do Mar, Universidade Federal de São Paulo (IMAR-UNIFESP), Av. Almirante Saldanha da Gama, 11030-400 Santos, SP, Brazil
| | - Gilberto Fillmann
- PPG em Oceanologia, Universidade Federal do Rio Grande (PPGO-FURG), Av. Itália km 8 s/n, Campus Carreiros, 96203-900 Rio Grande, RS, Brazil; Instituto de Oceanografia, Universidade Federal do Rio Grande (IO -FURG), Av. Itália km 8 s/n, Campus Carreiros, 96203-900 Rio Grande, RS, Brazil; PPG em Química Tecnológica e Ambiental, Universidade Federal do Rio Grande (PPGQTA-FURG), Av. Itália km 8 s/n, Campus Carreiros, 96203-900 Rio Grande, RS, Brazil.
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Swaine M, Bergna A, Oyserman B, Vasileiadis S, Karas PA, Screpanti C, Karpouzas DG. Impact of pesticides on soil health: identification of key soil microbial indicators for ecotoxicological assessment strategies through meta-analysis. FEMS Microbiol Ecol 2025; 101:fiaf052. [PMID: 40338616 DOI: 10.1093/femsec/fiaf052] [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: 12/11/2024] [Revised: 03/28/2025] [Accepted: 05/07/2025] [Indexed: 05/09/2025] Open
Abstract
Pesticides remain a cornerstone of modern agriculture. Despite their key role, it is well documented that pesticides can have considerable off-target effects on a range of organisms. The effects of pesticides on soil health, and more importantly on soil microbiota, are currently not well addressed at the regulatory level, despite cumulative evidence for the pivotal role of the soil microbiota on ecosystem functioning. Here, we use a meta-analysis to assess the effects of pesticides on soil health parameters identifying key biological indicators for environmental risk assessment analysis. We demonstrate that ammonia oxidizing archaeal and bacterial amoA gene abundance were the most consistent indicators for pesticide exposure, with inhibition driven by herbicides and fungicides. Our meta-analysis, combined with their key functional role and the existence of well-standardized, high-resolution methods for monitoring their abundance, highlighted the potential of ammonia-oxidizing microorganisms (AOMs) as indicators of the toxicity of pesticides on soil microbiota. AOM could serve as drivers of chemical innovation in a "benign and sustainable by design" approach where new pesticide compounds will have to meet sustainability targets and ensure soil health preservation.
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Affiliation(s)
- Mark Swaine
- University of Thessaly, Department of Biochemistry and Biotechnology, Laboratory of Plant and Environmental Biotechnology, Larissa 41500, Greece
| | | | | | - Sotirios Vasileiadis
- University of Thessaly, Department of Biochemistry and Biotechnology, Laboratory of Plant and Environmental Biotechnology, Larissa 41500, Greece
| | - Panagiotis A Karas
- University of Thessaly, Department of Biochemistry and Biotechnology, Laboratory of Plant and Environmental Biotechnology, Larissa 41500, Greece
| | | | - Dimitrios G Karpouzas
- University of Thessaly, Department of Biochemistry and Biotechnology, Laboratory of Plant and Environmental Biotechnology, Larissa 41500, Greece
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Zhu W, Li H, Zhang M, Ji B, Liu Z. Plasma metabolites as potential markers and targets to prevent and treat urolithiasis: a Mendelian randomization study. Front Mol Biosci 2024; 11:1426575. [PMID: 39257479 PMCID: PMC11385617 DOI: 10.3389/fmolb.2024.1426575] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2024] [Accepted: 08/12/2024] [Indexed: 09/12/2024] Open
Abstract
Background Studies on the relationships between diseases of the urinary system and human plasma proteomes have identified several potential biomarkers. However, none of these studies have elucidated the causal relationships between plasma proteins and urolithiasis. Objective The objective of the study was to investigate the potential risks of plasma metabolites in urolithiasis using a two-sample Mendelian randomization (MR) study. Methods A total of 1,400 metabolites were identified in the most comprehensive genome-wide association study (GWAS) of plasma metabolomics in a European population to date, and single-nucleotide polymorphisms (SNPs) were used as the instrumental variables for the plasma metabolites. The European GWAS data for urinary calculi included 482,123 case samples and 6,223 control samples (ebi-a-GCST90018935). The associations between the plasma metabolites and risk of urolithiasis were evaluated by inverse variance weighting (IVW) and supplemented by sensitivity analyses of the MR-Egger and MR-PRESSO tests. Results For the first time, we found a causal relationship between two plasma metabolites (p < 1.03 × 10-4) and urolithiasis (p < 0.05). The chemical 4-hydroxychlorothalonil, which is an intermediate product of the pesticide hydroxychlorothalonil, could promote urolithiasis (odds ratio (OR) = 1.12) as a risk factor. Moreover, 1-stearoyl-2-arachidonoyl-GPC, which is an important component of phospholipid metabolism in the human body, can inhibit urolithiasis (OR = 0.94). Conclusions Our results suggest that blood metabolites can be used as blood markers and drug targets in the prevention, diagnosis, and treatment of urolithiasis; furthermore, our results can provide a basis for policy makers to formulate prevention and treatment policies for urolithiasis.
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Affiliation(s)
- Wuhui Zhu
- Qingdao Third People's Hospital, Qingdao University, Department of Stone Disease Diagnosis and Treatment Center, Qingdao, China
| | - Huan Li
- Center for Disease Control and Prevention of Shinan District, Department of Laboratory, Qingdao, China
| | - Ming Zhang
- Integrated Traditional Chinese and Western Medicine Hospital of Shinan District, Department of Laboratory, Qingdao, China
| | - Bing Ji
- Qingdao Third People's Hospital, Qingdao University, Department of Stone Disease Diagnosis and Treatment Center, Qingdao, China
| | - Zongtao Liu
- Qingdao Third People's Hospital, Qingdao University, Department of Stone Disease Diagnosis and Treatment Center, Qingdao, China
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Qiu M, Wu Z, Song J, Zheng C, Zhan X, Shan M, Cui M, Chen L, Zhang L, Yu Y, Fang H. Chlorothalonil drives the antibiotic resistome in earthworm guts. JOURNAL OF HAZARDOUS MATERIALS 2023; 463:132831. [PMID: 39492104 DOI: 10.1016/j.jhazmat.2023.132831] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/17/2023] [Revised: 10/08/2023] [Accepted: 10/20/2023] [Indexed: 11/05/2024]
Abstract
Earthworms are recognized as carriers of pollutants; however, how fungicide residues affect microbiota and antibiotic resistance genes (ARGs) in earthworm guts has remained unclear. In this work, changes in the earthworm gut microbiome and resistome were investigated after chlorothalonil (CTL) application. Earthworm activity accelerated the dissipation of CTL in soil, while metagenomic analysis revealed that CTL altered the ARG profile, leading to an increased abundance of ARGs in earthworm guts, particularly with respect to ARG subtypes CRP and OXA-427. CTL also reduced bacterial diversity and elevated the relative abundance of the phylum Proteobacteria, including a potential ARG host, Aeromonas, which is a known pathogen. Various bacterial genera from the Actinobacteria and Proteobacteria phyla were identified as broad-spectrum hosts for ARGs in earthworm guts. CTL could increase the abundance of multidrug efflux pump genes and enhance the abundance of mobile genetic elements, especially plasmids. Various co-occurrence patterns between plasmids and ARGs were also found after CTL treatments. It is concluded that CTL may act as a selective stress for ARGs and lead to an increase in their abundance by facilitating the proliferation of potential ARG hosts and enhancing plasmid-mediated horizontal transfer frequency of ARGs in earthworm guts.
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Affiliation(s)
- Mengting Qiu
- Key Laboratory of Molecular Biology of Crop Pathogens and Insects, Ministry of Agriculture, Zhejiang Provincial Key Laboratory of Biology of Crop Pathogens and Insects, Institute of Pesticide and Environmental Toxicology, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou 310058, China
| | - Zishan Wu
- Key Laboratory of Molecular Biology of Crop Pathogens and Insects, Ministry of Agriculture, Zhejiang Provincial Key Laboratory of Biology of Crop Pathogens and Insects, Institute of Pesticide and Environmental Toxicology, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou 310058, China
| | - Jiajin Song
- Key Laboratory of Molecular Biology of Crop Pathogens and Insects, Ministry of Agriculture, Zhejiang Provincial Key Laboratory of Biology of Crop Pathogens and Insects, Institute of Pesticide and Environmental Toxicology, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou 310058, China
| | - Conglai Zheng
- Key Laboratory of Molecular Biology of Crop Pathogens and Insects, Ministry of Agriculture, Zhejiang Provincial Key Laboratory of Biology of Crop Pathogens and Insects, Institute of Pesticide and Environmental Toxicology, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou 310058, China
| | - Xiuping Zhan
- Shanghai Agricultural Technology Extension Service Center, Shanghai 201103, China
| | - Mei Shan
- Key Laboratory of Molecular Biology of Crop Pathogens and Insects, Ministry of Agriculture, Zhejiang Provincial Key Laboratory of Biology of Crop Pathogens and Insects, Institute of Pesticide and Environmental Toxicology, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou 310058, China
| | - Minrong Cui
- Key Laboratory of Molecular Biology of Crop Pathogens and Insects, Ministry of Agriculture, Zhejiang Provincial Key Laboratory of Biology of Crop Pathogens and Insects, Institute of Pesticide and Environmental Toxicology, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou 310058, China
| | - Liezhong Chen
- Zhejiang Academy of Agricultural Sciences, State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, Hangzhou 310021, China
| | - Luqing Zhang
- Key Laboratory of Molecular Biology of Crop Pathogens and Insects, Ministry of Agriculture, Zhejiang Provincial Key Laboratory of Biology of Crop Pathogens and Insects, Institute of Pesticide and Environmental Toxicology, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou 310058, China
| | - Yunlong Yu
- Key Laboratory of Molecular Biology of Crop Pathogens and Insects, Ministry of Agriculture, Zhejiang Provincial Key Laboratory of Biology of Crop Pathogens and Insects, Institute of Pesticide and Environmental Toxicology, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou 310058, China
| | - Hua Fang
- Key Laboratory of Molecular Biology of Crop Pathogens and Insects, Ministry of Agriculture, Zhejiang Provincial Key Laboratory of Biology of Crop Pathogens and Insects, Institute of Pesticide and Environmental Toxicology, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou 310058, China.
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5
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Han L, Xu H, Wang Q, Liu X, Li X, Wang Y, Nie J, Liu M, Ju C, Yang C. Deciphering the degradation characteristics of the fungicides imazalil and penflufen and their effects on soil bacterial community composition, assembly, and functional profiles. JOURNAL OF HAZARDOUS MATERIALS 2023; 460:132379. [PMID: 37643571 DOI: 10.1016/j.jhazmat.2023.132379] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/03/2023] [Revised: 08/14/2023] [Accepted: 08/22/2023] [Indexed: 08/31/2023]
Abstract
The adsorption-desorption and degradation characteristics of two widely applied fungicides, imazalil and penflufen, and the responses of soil bacterial diversity, structure, function, and interaction after long-term exposure were systemically studied in eight different soils. The adsorption ability of imazalil in soil was significantly higher than that of penflufen. Both imazalil and penflufen degraded slowly in most soils following the order: imazalil > penflufen, with soil pH, silt, and clay content being the potential major influencing factors. Both imazalil and penflufen obviously inhibited the soil microbial functional diversity, altered the soil bacterial community and decreased its diversity. Although exposure to low and high concentrations of imazalil and penflufen strengthened the interactions among the soil bacterial communities, the functional diversity of the co-occurrence network tended to be simple at high concentrations, especially in penflufen treatment. Both imazalil and penflufen markedly disturbed soil nitrogen cycling, especially penflufen seriously inhibited most nitrogen cycling processes, such as nitrogen fixation and nitrification. Meanwhile, sixteen and ten potential degradative bacteria of imazalil and penflufen, respectively, were found in soils, including Kaistobacter and Lysobacter. Collectively, the long-term application of imazalil and penflufen could cause residual accumulation in soils and subsequently result in serious negative effects on soil ecology.
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Affiliation(s)
- Lingxi Han
- College of Horticulture, Qingdao Agricultural University, Laboratory of Quality & Safety Risk Assessment for Fruit (Qingdao), Ministry of Agriculture and Rural Affairs/National Technology Centre for Whole Process Quality Control of FSEN Horticultural Products (Qingdao), Qingdao Key Lab of Modern Agriculture Quality and Safety Engineering, Qingdao 266109, China.
| | - Han Xu
- College of Horticulture, Qingdao Agricultural University, Laboratory of Quality & Safety Risk Assessment for Fruit (Qingdao), Ministry of Agriculture and Rural Affairs/National Technology Centre for Whole Process Quality Control of FSEN Horticultural Products (Qingdao), Qingdao Key Lab of Modern Agriculture Quality and Safety Engineering, Qingdao 266109, China
| | - Qianwen Wang
- Central Laboratory, Qingdao Agricultural University, Qingdao 266109, China
| | - Xiaoli Liu
- College of Horticulture, Qingdao Agricultural University, Laboratory of Quality & Safety Risk Assessment for Fruit (Qingdao), Ministry of Agriculture and Rural Affairs/National Technology Centre for Whole Process Quality Control of FSEN Horticultural Products (Qingdao), Qingdao Key Lab of Modern Agriculture Quality and Safety Engineering, Qingdao 266109, China
| | - Xiaoming Li
- College of Horticulture, Qingdao Agricultural University, Laboratory of Quality & Safety Risk Assessment for Fruit (Qingdao), Ministry of Agriculture and Rural Affairs/National Technology Centre for Whole Process Quality Control of FSEN Horticultural Products (Qingdao), Qingdao Key Lab of Modern Agriculture Quality and Safety Engineering, Qingdao 266109, China
| | - Yiran Wang
- College of Horticulture, Qingdao Agricultural University, Laboratory of Quality & Safety Risk Assessment for Fruit (Qingdao), Ministry of Agriculture and Rural Affairs/National Technology Centre for Whole Process Quality Control of FSEN Horticultural Products (Qingdao), Qingdao Key Lab of Modern Agriculture Quality and Safety Engineering, Qingdao 266109, China
| | - Jiyun Nie
- College of Horticulture, Qingdao Agricultural University, Laboratory of Quality & Safety Risk Assessment for Fruit (Qingdao), Ministry of Agriculture and Rural Affairs/National Technology Centre for Whole Process Quality Control of FSEN Horticultural Products (Qingdao), Qingdao Key Lab of Modern Agriculture Quality and Safety Engineering, Qingdao 266109, China.
| | - Mingyu Liu
- College of Horticulture, Qingdao Agricultural University, Laboratory of Quality & Safety Risk Assessment for Fruit (Qingdao), Ministry of Agriculture and Rural Affairs/National Technology Centre for Whole Process Quality Control of FSEN Horticultural Products (Qingdao), Qingdao Key Lab of Modern Agriculture Quality and Safety Engineering, Qingdao 266109, China
| | - Chao Ju
- College of Plant Health and Medicine, Qingdao Agricultural University, Qingdao 266109, China
| | - Congjun Yang
- College of Plant Health and Medicine, Qingdao Agricultural University, Qingdao 266109, China
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Báez ME, Sarkar B, Peña A, Vidal J, Espinoza J, Fuentes E. Effect of surfactants on the sorption-desorption, degradation, and transport of chlorothalonil and hydroxy-chlorothalonil in agricultural soils. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2023; 327:121545. [PMID: 37004862 DOI: 10.1016/j.envpol.2023.121545] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/13/2022] [Revised: 03/30/2023] [Accepted: 03/31/2023] [Indexed: 06/19/2023]
Abstract
The fungicide chlorothalonil (CTL) and its metabolite hydroxy chlorothalonil (OH-CTL) constitute a risk of soil and water contamination, highlighting the need to find suitable soil remediation methods for these compounds. Surfactants can promote the bioavailability of organic compounds for enhanced microbial degradation, but the performance depends on soil and surfactant properties, sorption-desorption equilibria of contaminants and surfactants, and possible adverse effects of surfactants on microorganisms. This study investigated the influence of five surfactants [e.g., Triton X-100 (TX-100), sodium dodecyl sulphate (SDS), hexadecyltrimethylammonium bromide (HDTMA), Aerosol 22 and Tween 80] on the sorption-desorption, degradation, and mobility of CTL and OH-CTL in two volcanic and one non-volcanic soil. Sorption and desorption of fungicides depended on the sorption of surfactants on soils, surfactants' capacity to neutralize the net negative charge of soils, surfactants' critical micellar concentration, and pH of soils. HDTMA was strongly adsorbed on soils, which shifted the fungicide sorption equilibria by increasing the distribution coefficient (Kd) values. Contrarily, SDS and TX-100 lowered CTL and OH-CTL sorption on soils by decreasing the Kd values, which resulted in an efficient extraction of the fungicide compounds from soil. SDS increased the degradation of CTL, especially in the non-volcanic soil (DT50 values were 14 and 7 days in natural and amended soils, with final residues <7% of the initial dose), whereas TX-100 enabled an early start and sustenance of OH-CTL degradation in all soils. CTL and OH-CTL stimulated soil microbial activities without noticeable deleterious effects of the surfactants. SDS and TX-100 also reduced the vertical transport of OH-CTL in soils. Results of this study could be extended to soils in other regions of the world because the tested soils represent widely different physical, chemical, and biological properties.
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Affiliation(s)
- María E Báez
- Facultad de Ciencias Químicas y Farmacéuticas, Universidad de Chile, Olivos 1007, 8380000, Santiago, Chile.
| | - Binoy Sarkar
- Future Industries Institute, University of South Australia, Mawson Lakes, SA 5095, Australia
| | - Aránzazu Peña
- Instituto Andaluz de Ciencias de la Tierra (CSIC-UGR), Avenida de las Palmeras 4, 18100 Armilla, Granada, Spain
| | - Jorge Vidal
- Facultad de Ciencias Químicas y Farmacéuticas, Universidad de Chile, Olivos 1007, 8380000, Santiago, Chile
| | - Jeannette Espinoza
- Facultad de Ciencias Químicas y Farmacéuticas, Universidad de Chile, Olivos 1007, 8380000, Santiago, Chile
| | - Edwar Fuentes
- Facultad de Ciencias Químicas y Farmacéuticas, Universidad de Chile, Olivos 1007, 8380000, Santiago, Chile
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Sim JXF, Drigo B, Doolette CL, Vasileiadis S, Donner E, Karpouzas DG, Lombi E. Repeated applications of fipronil, propyzamide and flutriafol affect soil microbial functions and community composition: A laboratory-to-field assessment. CHEMOSPHERE 2023; 331:138850. [PMID: 37146771 DOI: 10.1016/j.chemosphere.2023.138850] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/09/2023] [Revised: 05/02/2023] [Accepted: 05/02/2023] [Indexed: 05/07/2023]
Abstract
Pesticides play an important role in conventional agriculture by controlling pests, weeds, and plant diseases. However, repeated applications of pesticides may have long lasting effects on non-target microorganisms. Most studies have investigated the short-term effects of pesticides on soil microbial communities at the laboratory scale. Here, we assessed the ecotoxicological impact of fipronil (insecticide), propyzamide (herbicide) and flutriafol (fungicide) on (i) soil microbial enzymatic activities, (ii) potential nitrification, (iii) abundance of the fungal and bacterial community and key functional genes (nifH, amoA, chiA, cbhl and phosphatase) and (iii) diversity of bacteria, fungi, ammonia oxidizing bacteria (AOB) and archaea (AOA) after repeated pesticide applications in laboratory and field experiments. Our results showed that repeated applications of propyzamide and flutriafol affected the soil microbial community structure in the field and had significant inhibitory effects on enzymatic activities. The abundances of soil microbiota affected by pesticides recovered to levels similar to the control following a second application, suggesting that they might be able to recover from the pesticide effects. However, the persistent pesticide inhibitory effects on soil enzymatic activities suggests that the ability of the microbial community to cope with the repeated application was not accompanied by functional recovery. Overall, our results suggest that repeated pesticide applications may influence soil health and microbial functionalities and that more information should be collected to inform risk-based policy development.
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Affiliation(s)
- Jowenna X F Sim
- Future Industries Institute, University of South Australia, Mawson Lakes, SA, 5095, Australia.
| | - Barbara Drigo
- Future Industries Institute, University of South Australia, Mawson Lakes, SA, 5095, Australia
| | - Casey L Doolette
- Future Industries Institute, University of South Australia, Mawson Lakes, SA, 5095, Australia
| | - Sotirios Vasileiadis
- University of Thessaly, Department of Biochemistry and Biotechnology, Laboratory of Plant and Environmental Biotechnology, Larissa, Viopolis, 41500, Greece
| | - Erica Donner
- Future Industries Institute, University of South Australia, Mawson Lakes, SA, 5095, Australia
| | - Dimitrios G Karpouzas
- University of Thessaly, Department of Biochemistry and Biotechnology, Laboratory of Plant and Environmental Biotechnology, Larissa, Viopolis, 41500, Greece
| | - Enzo Lombi
- Future Industries Institute, University of South Australia, Mawson Lakes, SA, 5095, Australia
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Shixuan Z, Donghao L, Jiwei J, Fengxiang L, Tao H. Oxygen reduction activity of a Pt-N4 single-atom catalyst prepared by electrochemical deposition and its bioelectrochemical application. Electrochim Acta 2022. [DOI: 10.1016/j.electacta.2022.141543] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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9
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Han L, Xu M, Kong X, Liu X, Wang Q, Chen G, Xu K, Nie J. Deciphering the diversity, composition, function, and network complexity of the soil microbial community after repeated exposure to a fungicide boscalid. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2022; 312:120060. [PMID: 36058318 DOI: 10.1016/j.envpol.2022.120060] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/06/2022] [Revised: 08/22/2022] [Accepted: 08/23/2022] [Indexed: 06/15/2023]
Abstract
Boscalid is a novel, highly effective carboximide fungicide that has been substantially and irrationally applied in greenhouses. However, little is known about the residual characteristics of boscalid and its ecological effects in long-term polluted greenhouse soils. Therefore, actual boscalid pollution status in greenhouse soils was simulated by repeatedly introducing boscalid into the soil under laboratory conditions. The degradation characteristics of boscalid, and its effects on the diversity, composition, function, and co-occurrence patterns of the soil microbial community were systematically investigated. Boscalid degraded slowly, with its degradation half-lives ranging from 31.5 days to 180.1 days in the soil. Boscalid degradation was further delayed by repeated treatment and increasing its initial concentration. Boscalid significantly decreased soil microbial diversity, particularly at the recommended dosage. Amplicon sequencing analysis showed that boscalid altered the soil microbial community and further stimulated the phylum Proteobacteria and four potential boscalid-degrading bacterial genera, Sphingomonas, Starkeya, Citrobacter, and Castellaniella. Although the network analysis revealed that boscalid significantly reduced the microbial network complexity, it enhanced the vital roles of Proteobacteria by increasing its proportion and strengthening the relationships among the internal bacteria in the network. The soil microbial function in the boscalid treatment were simulated at the recommended dosage and two-fold recommended dosage but showed an inhibition-recovery-stimulation trend at the five-fold recommended dosage with an increase in treatment frequency. Moreover, the expression of nitrogen cycling functional genes, nifH, AOA amoA, AOB amoA, nirK, and nirS in all boscalid treatments displayed an inhibition-recovery-stimulation trend during the entire experimental period, and the effects were more pronounced at the five-fold recommended dosage. In conclusion, repeated boscalid treatments delayed degradation, reduced soil microbial diversity and network complexity, disturbed soil microbial community, and interfered with soil microbial function.
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Affiliation(s)
- Lingxi Han
- College of Horticulture, Qingdao Agricultural University/Laboratory of Quality & Safety Risk Assessment for Fruit (Qingdao), Ministry of Agriculture and Rural Affairs/National Technology Centre for Whole Process Quality Control of FSEN Horticultural Products (Qingdao)/Qingdao Key Lab of Modern Agriculture Quality and Safety Engineering, Qingdao, 266109, China
| | - Min Xu
- College of Horticulture, Qingdao Agricultural University/Laboratory of Quality & Safety Risk Assessment for Fruit (Qingdao), Ministry of Agriculture and Rural Affairs/National Technology Centre for Whole Process Quality Control of FSEN Horticultural Products (Qingdao)/Qingdao Key Lab of Modern Agriculture Quality and Safety Engineering, Qingdao, 266109, China
| | - Xiabing Kong
- College of Horticulture, Qingdao Agricultural University/Laboratory of Quality & Safety Risk Assessment for Fruit (Qingdao), Ministry of Agriculture and Rural Affairs/National Technology Centre for Whole Process Quality Control of FSEN Horticultural Products (Qingdao)/Qingdao Key Lab of Modern Agriculture Quality and Safety Engineering, Qingdao, 266109, China
| | - Xiaoli Liu
- College of Horticulture, Qingdao Agricultural University/Laboratory of Quality & Safety Risk Assessment for Fruit (Qingdao), Ministry of Agriculture and Rural Affairs/National Technology Centre for Whole Process Quality Control of FSEN Horticultural Products (Qingdao)/Qingdao Key Lab of Modern Agriculture Quality and Safety Engineering, Qingdao, 266109, China
| | - Qianwen Wang
- Central Laboratory, Qingdao Agricultural University, Qingdao, 266109, China
| | - Guilan Chen
- Central Laboratory, Qingdao Agricultural University, Qingdao, 266109, China
| | - Kun Xu
- Central Laboratory, Qingdao Agricultural University, Qingdao, 266109, China
| | - Jiyun Nie
- College of Horticulture, Qingdao Agricultural University/Laboratory of Quality & Safety Risk Assessment for Fruit (Qingdao), Ministry of Agriculture and Rural Affairs/National Technology Centre for Whole Process Quality Control of FSEN Horticultural Products (Qingdao)/Qingdao Key Lab of Modern Agriculture Quality and Safety Engineering, Qingdao, 266109, China.
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10
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Karpouzas DG, Vryzas Z, Martin-Laurent F. Pesticide soil microbial toxicity: setting the scene for a new pesticide risk assessment for soil microorganisms (IUPAC Technical Report). PURE APPL CHEM 2022. [DOI: 10.1515/pac-2022-0201] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
Pesticides constitute an integral part of modern agriculture. However, there are still concerns about their effects on non-target organisms. To address this the European Commission has imposed a stringent regulatory scheme for new pesticide compounds. Assessment of the aquatic toxicity of pesticides is based on a range of advanced tests. This does not apply to terrestrial ecosystems, where the toxicity of pesticides on soil microorganisms, is based on an outdated and crude test (N mineralization). This regulatory gap is reinforced by the recent methodological and standardization advances in soil microbial ecology. The inclusion of such standardized tools in a revised risk assessment scheme will enable the accurate estimation of the toxicity of pesticides on soil microorganisms and on associated ecosystem services. In this review we (i) summarize recent work in the assessment of the soil microbial toxicity of pesticides and point to ammonia-oxidizing microorganisms (AOM) and arbuscular mycorrhizal fungi (AMF) as most relevant bioindicator groups (ii) identify limitations in the experimental approaches used and propose mitigation solutions, (iii) identify scientific gaps and (iv) propose a new risk assessment procedure to assess the effects of pesticides on soil microorganisms.
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Affiliation(s)
- Dimitrios G. Karpouzas
- Department of Biochemistry and Biotechnology , Laboratory of Plant and Environmental Biotechnology, University of Thessaly , Viopolis 41500 , Larissa , Greece
| | - Zisis Vryzas
- Department of Agricultural Development , Democritus University of Thrace , Orestiada , Greece
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11
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Sun CX, Liu B, Wang WB, Yuan XX, Wu YJ. Risk Assessment of Chlorothalonil as a Probable Human Carcinogen on Selected Vegetables in an Eastern China Province. Front Public Health 2022; 10:917269. [PMID: 35875011 PMCID: PMC9298499 DOI: 10.3389/fpubh.2022.917269] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2022] [Accepted: 06/07/2022] [Indexed: 11/17/2022] Open
Abstract
Objectives This study aimed to provide an assessment of chlorothalonil's possible carcinogenic risk posed to the public. In combination and comparison with the non-carcinogenic risk, the results hopefully could provide useful insights, early warning, and references for policy formulation. Methods This study firstly investigated the occurrence of chlorothalonil on selected key vegetables for different scenarios, and then conducted an exposure assessment with officially published data. Lastly, both the non-carcinogenic and carcinogenic risk of chlorothalonil were calculated by using Monte-Carlo simulation. Results Even though mean non-carcinogenic risks of chlorothalonil for all scenarios were below threshold value, the mean carcinogenic risks for maximum-risk scenario and most-likely risk scenario were mostly above threshold value. High probabilities of exceedance of threshold value existed for carcinogenic risk under all scenarios. Conclusion Potential threat to public health existed for conventionally 'safe' pesticide if considering the possible carcinogenicity. Extra caution should be taken and the potential carcinogenic effects should be included into consideration for better protection of public health during the policy formulation process.
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Affiliation(s)
- Chen-Xi Sun
- Shandong Academy of Agricultural Sciences, Shandong Provincial Key Laboratory of Test Technology on Food Quality and Safety, Jinan, China
| | - Bing Liu
- Resources and Environment Innovation Institute, School of Municipal and Environmental Engineering, Shandong Jianzhu University, Jinan, China
| | - Wen-Bo Wang
- Shandong Academy of Agricultural Sciences, Shandong Provincial Key Laboratory of Test Technology on Food Quality and Safety, Jinan, China
| | - Xue-Xia Yuan
- Shandong Academy of Agricultural Sciences, Shandong Provincial Key Laboratory of Test Technology on Food Quality and Safety, Jinan, China
| | - Yuan-Juan Wu
- Shandong Academy of Agricultural Sciences, Shandong Provincial Key Laboratory of Test Technology on Food Quality and Safety, Jinan, China
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12
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Scariot FJ, Delamare APL, Echeverrigaray S. The effect of chlorothalonil on Saccharomyces cerevisiae under alcoholic fermentation. PESTICIDE BIOCHEMISTRY AND PHYSIOLOGY 2022; 182:105032. [PMID: 35249653 DOI: 10.1016/j.pestbp.2021.105032] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/05/2021] [Revised: 12/27/2021] [Accepted: 12/30/2021] [Indexed: 06/14/2023]
Abstract
Chlorothalonil is a broad-spectrum fungicide largely used for the control of several diseases of grapevines. With a moderate persistence in plants, soil and, water, it can be carried to grape musts, particularly when applied to control grape rot diseases. This work aimed to determine the effect of chlorothalonil on Saccharomyces cerevisiae under fermentative conditions using a flow cytometry approach. Yeasts were cultivated in synthetic must with different concentrations of chlorothalonil (0 to 60 μM) and evaluated for culture-ability, membrane integrity, reactive oxygen species (ROS) accumulation, mitochondrial membrane potential, metacaspase activity, ATP, nonprotein SH and, SH-proteins. The results confirmed the oxidation of nonprotein SH, including glutathione, and the binding of the fungicide with sulfhydryl proteins, which led to changes in the cell and mitochondrial membranes that result in the necrotic death of part of the yeast population, and a reduction in metabolic activity. Moreover, the reduction in glutathione-SH concentration was responsible for the increase in ROS which in turn triggers metacaspase-dependent apoptotic cell death. Cells that escape death adapt and began to grow and ferment after a dose-dependent lag-phase period, exhibiting an almost normal fermentative behavior thereafter. Moreover, was observed unexpected protection of chlorothalonil sub-dosages on yeast cell membrane integrity during alcoholic fermentation. This study contributed insights into how chlorothalonil leads the non-target organism S. cerevisiae to cell death and explores the effect of the fungicide during alcoholic fermentation.
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Affiliation(s)
- Fernando Joel Scariot
- Laboratory of Enology and Applied Microbiology, Institute of Biotechnology, University of Caxias do Sul, Rua Fransisco Getúlio Vargas, 1130, Caxias do Sul 95070-560, Brazil.
| | - Ana Paula Longaray Delamare
- Laboratory of Enology and Applied Microbiology, Institute of Biotechnology, University of Caxias do Sul, Rua Fransisco Getúlio Vargas, 1130, Caxias do Sul 95070-560, Brazil
| | - Sergio Echeverrigaray
- Laboratory of Enology and Applied Microbiology, Institute of Biotechnology, University of Caxias do Sul, Rua Fransisco Getúlio Vargas, 1130, Caxias do Sul 95070-560, Brazil
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13
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Deposition, dissipation, metabolism and dietary risk assessment of chlorothalonil in open field-planted cabbage. J Food Compost Anal 2021. [DOI: 10.1016/j.jfca.2021.104008] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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14
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Mishra S, Lin Z, Pang S, Zhang W, Bhatt P, Chen S. Recent Advanced Technologies for the Characterization of Xenobiotic-Degrading Microorganisms and Microbial Communities. Front Bioeng Biotechnol 2021; 9:632059. [PMID: 33644024 PMCID: PMC7902726 DOI: 10.3389/fbioe.2021.632059] [Citation(s) in RCA: 113] [Impact Index Per Article: 28.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2020] [Accepted: 01/11/2021] [Indexed: 12/16/2022] Open
Abstract
Global environmental contamination with a complex mixture of xenobiotics has become a major environmental issue worldwide. Many xenobiotic compounds severely impact the environment due to their high toxicity, prolonged persistence, and limited biodegradability. Microbial-assisted degradation of xenobiotic compounds is considered to be the most effective and beneficial approach. Microorganisms have remarkable catabolic potential, with genes, enzymes, and degradation pathways implicated in the process of biodegradation. A number of microbes, including Alcaligenes, Cellulosimicrobium, Microbacterium, Micrococcus, Methanospirillum, Aeromonas, Sphingobium, Flavobacterium, Rhodococcus, Aspergillus, Penecillium, Trichoderma, Streptomyces, Rhodotorula, Candida, and Aureobasidium, have been isolated and characterized, and have shown exceptional biodegradation potential for a variety of xenobiotic contaminants from soil/water environments. Microorganisms potentially utilize xenobiotic contaminants as carbon or nitrogen sources to sustain their growth and metabolic activities. Diverse microbial populations survive in harsh contaminated environments, exhibiting a significant biodegradation potential to degrade and transform pollutants. However, the study of such microbial populations requires a more advanced and multifaceted approach. Currently, multiple advanced approaches, including metagenomics, proteomics, transcriptomics, and metabolomics, are successfully employed for the characterization of pollutant-degrading microorganisms, their metabolic machinery, novel proteins, and catabolic genes involved in the degradation process. These technologies are highly sophisticated, and efficient for obtaining information about the genetic diversity and community structures of microorganisms. Advanced molecular technologies used for the characterization of complex microbial communities give an in-depth understanding of their structural and functional aspects, and help to resolve issues related to the biodegradation potential of microorganisms. This review article discusses the biodegradation potential of microorganisms and provides insights into recent advances and omics approaches employed for the specific characterization of xenobiotic-degrading microorganisms from contaminated environments.
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Affiliation(s)
- Sandhya Mishra
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, Guangdong Province Key Laboratory of Microbial Signals and Disease Control, Integrative Microbiology Research Centre, South China Agricultural University, Guangzhou, China
- Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou, China
| | - Ziqiu Lin
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, Guangdong Province Key Laboratory of Microbial Signals and Disease Control, Integrative Microbiology Research Centre, South China Agricultural University, Guangzhou, China
- Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou, China
| | - Shimei Pang
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, Guangdong Province Key Laboratory of Microbial Signals and Disease Control, Integrative Microbiology Research Centre, South China Agricultural University, Guangzhou, China
- Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou, China
| | - Wenping Zhang
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, Guangdong Province Key Laboratory of Microbial Signals and Disease Control, Integrative Microbiology Research Centre, South China Agricultural University, Guangzhou, China
- Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou, China
| | - Pankaj Bhatt
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, Guangdong Province Key Laboratory of Microbial Signals and Disease Control, Integrative Microbiology Research Centre, South China Agricultural University, Guangzhou, China
- Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou, China
| | - Shaohua Chen
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, Guangdong Province Key Laboratory of Microbial Signals and Disease Control, Integrative Microbiology Research Centre, South China Agricultural University, Guangzhou, China
- Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou, China
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15
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Fisher IJ, Phillips PJ, Bayraktar BN, Chen S, McCarthy BA, Sandstrom MW. Pesticides and their degradates in groundwater reflect past use and current management strategies, Long Island, New York, USA. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 752:141895. [PMID: 32892047 DOI: 10.1016/j.scitotenv.2020.141895] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/30/2020] [Revised: 08/20/2020] [Accepted: 08/20/2020] [Indexed: 05/24/2023]
Abstract
Long Island, New York, has a mix of urban/suburban to agricultural/horticultural land use and nearly 3 million residents that rely on a sole-source aquifer for drinking water. The analysis of shallow groundwater (<40 m below land surface) collected from 54 monitoring wells across Long Island detected 53 pesticides or pesticide degradates. Maximum concentrations for individual pesticides or pesticide degradates ranged from 3 to 368,000 ng/L. The highest concentrations and most frequent pesticide detections occurred in samples collected from the pesticide management (PM) network, set in an agricultural/horticultural area in eastern Long Island with coordinated pesticide management by state and local agencies. The other two networks (Suffolk and Nassau/Queens) were set in suburban and urban areas, respectively, and had less frequent detections and lower pesticide concentrations than the PM network. Pesticide detections and concentration patterns (herbicide, insecticide, or fungicide) differed among the three networks revealing broad differences in land use. The predominance of fungicides metalaxyl, 1H-1,2,4-triazole (propiconazole/myclobutanil degradate), and 4-hydroxychlorothalonil (HCTL, chlorothalonil degradate) in samples from the PM network reflects their intensive use in agricultural settings. Total fungicide concentrations in the PM network ranged from <10 to >300,000 ng/L. The widespread detection of imidacloprid and triazine herbicides, simazine and atrazine, reveal a mixture of current and past use pesticides across the Long Island region. Low concentrations (<200 ng/L) of the triazines in the Suffolk and Nassau/Queens networks may reflect a change in land use and application. Acetanilide herbicides and aldicarb have been discontinued for 20 and 40 years, respectively, yet the concentrations of their degradates were among the highest observed in this study. Acetanilide (total concentrations up to 10,000 ng/L) and aldicarb degradates (up to 270 ng/L) are present in the PM network at much lower concentrations than previous Long Island studies and reflect changes in agricultural practices and pesticide management.
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Affiliation(s)
- Irene J Fisher
- U.S. Geological Survey, New York Water Science Center, 2045 Route 112, Building 4, Coram, NY 11727, USA.
| | - Patrick J Phillips
- U.S. Geological Survey, New York Water Science Center, 425 Jordan Road, Troy, NY 12180, USA
| | - Banu N Bayraktar
- U.S. Geological Survey, New York Water Science Center, 2045 Route 112, Building 4, Coram, NY 11727, USA
| | - Shirley Chen
- U.S. Geological Survey, New York Water Science Center, 2045 Route 112, Building 4, Coram, NY 11727, USA
| | - Brendan A McCarthy
- U.S. Geological Survey, New England Water Science Center, 196 Whitten Road, Augusta, ME 04330, USA
| | - Mark W Sandstrom
- U.S. Geological Survey, National Water Quality Laboratory, P.O. Box 25585, Denver, CO 80225, USA
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16
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Han L, Liu Y, Fang K, Zhang X, Liu T, Wang F, Wang X. Dissipation of chlorothalonil in the presence of chlortetracycline and ciprofloxacin and their combined effects on soil enzyme activity. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2020; 27:13662-13669. [PMID: 32030591 DOI: 10.1007/s11356-020-07753-0] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/28/2019] [Accepted: 01/14/2020] [Indexed: 06/10/2023]
Abstract
The long-term application of substantial amounts of fungicides and antibiotic-polluted organic manure (OM) in greenhouse has caused the co-existence of fungicides and antibiotics in soils. However, little is known about the effects of antibiotics on the persistence of fungicides in soils or their combined effects on soil enzyme activity. In this study, fungicide chlorothalonil (CTL) alone and in combination with antibiotic chlortetracycline (CTC) or ciprofloxacin (CIP) were repeatedly added to OM-amended soil to investigate the changes in the residual characteristics of CTL and in soil dehydrogenase and urease activity. The results showed that CTL rapidly dissipated in soils with the corresponding half-lives of 0.9-3.2, which initially increased, then decreased and finally stabilized with an increased treatment frequency. The dissipation of CTL was inhibited by CTC and CIP during the first several treatments. The soil dehydrogenase and urease activity in CTL-treated soils was inhibited during the first six treatments and then recovered afterwards. Compared with the OM-amended soil+CTL treatment, the OM-amended soil+CTL+CTC and OM-amended soil+CTL+CIP treatments had stronger inhibitory effects on soil enzyme activity during the first six repeated treatments but exhibited slight stimulating effects afterwards. Therefore, the results obtained in this study suggested that the long-term co-existence of CTL, CTC, and CIP altered the dissipation characteristics of CTL in soil and affected the soil enzyme activity levels. The prudent application of large and frequent of fungicides and OM-containing antibiotic residues in greenhouses should therefore be carefully considered in order to reduce the long-term combined pollution in soils.
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Affiliation(s)
- Lingxi Han
- Tobacco Research Institute of Chinese Academy of Agricultural Sciences (CAAS), Qingdao, 266101, People's Republic of China
| | - Yalei Liu
- Tobacco Research Institute of Chinese Academy of Agricultural Sciences (CAAS), Qingdao, 266101, People's Republic of China
| | - Kuan Fang
- Tobacco Research Institute of Chinese Academy of Agricultural Sciences (CAAS), Qingdao, 266101, People's Republic of China
| | - Xiaolian Zhang
- Tobacco Research Institute of Chinese Academy of Agricultural Sciences (CAAS), Qingdao, 266101, People's Republic of China
| | - Tong Liu
- Tobacco Research Institute of Chinese Academy of Agricultural Sciences (CAAS), Qingdao, 266101, People's Republic of China
| | - Fenglong Wang
- Tobacco Research Institute of Chinese Academy of Agricultural Sciences (CAAS), Qingdao, 266101, People's Republic of China.
| | - Xiuguo Wang
- Tobacco Research Institute of Chinese Academy of Agricultural Sciences (CAAS), Qingdao, 266101, People's Republic of China.
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17
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Zhang H, Chen S, Zhang Q, Long Z, Yu Y, Fang H. Fungicides enhanced the abundance of antibiotic resistance genes in greenhouse soil. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2020; 259:113877. [PMID: 31926390 DOI: 10.1016/j.envpol.2019.113877] [Citation(s) in RCA: 50] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/24/2019] [Revised: 12/08/2019] [Accepted: 12/22/2019] [Indexed: 05/21/2023]
Abstract
Long-term substantial application of fungicides in greenhouse cultivation led to residual pollution in soils and then altered soil microbial community. However, it is unclear whether residual fungicides could affect the diversity and abundance of antibiotic resistance genes (ARGs) in greenhouse soils. Here, the dissipation of fungicides and its impact on the abundance of ARGs were determined using shotgun metagenomic sequencing in the greenhouse and mountain soils under laboratory conditions. Our results showed the greenhouse soils harbored more diverse and abundant ARGs than the mountain soils. The application of carbendazim, azoxystrobin, and chlorothalonil could increase the abundance of total ARGs in the greenhouse soils, especially for those dominant ARG subtypes including sul2, sul1, aadA, tet(L), tetA(G), and tetX2. The abundant ARGs were significantly correlated with mobile genetic elements (MGEs, e.g. intI1and R485) in the greenhouse soils but no significant relationship in the mountain soils. Meanwhile, the co-occurrence patterns of ARGs and MGEs, e.g., sul2 and R485, sul1 and transposase, were further verified via the genetic arrangement of genes on the metagenome-assembled contigs in the greenhouse soils. Additionally, host tracking analysis indicated that ARGs were mainly carried by enterobacteria in the greenhouse soils but actinomyces in the mountain soils. These findings confirmed that some fungicides might serve as the co-selectors of ARGs and elevated their abundance via MGEs-mediated horizontal gene transfer in the greenhouse soils.
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Affiliation(s)
- Houpu Zhang
- Institute of Pesticide and Environmental Toxicology, College of Agriculture & Biotechnology, Zhejiang University, Hangzhou, 310058, China
| | - Shiyu Chen
- Institute of Pesticide and Environmental Toxicology, College of Agriculture & Biotechnology, Zhejiang University, Hangzhou, 310058, China
| | - Qianke Zhang
- Institute of Pesticide and Environmental Toxicology, College of Agriculture & Biotechnology, Zhejiang University, Hangzhou, 310058, China
| | - Zhengnan Long
- Institute of Pesticide and Environmental Toxicology, College of Agriculture & Biotechnology, Zhejiang University, Hangzhou, 310058, China
| | - Yunlong Yu
- Institute of Pesticide and Environmental Toxicology, College of Agriculture & Biotechnology, Zhejiang University, Hangzhou, 310058, China
| | - Hua Fang
- Institute of Pesticide and Environmental Toxicology, College of Agriculture & Biotechnology, Zhejiang University, Hangzhou, 310058, China.
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18
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Han L, Liu Y, Fang K, Zhang X, Liu T, Wang F, Wang X. Azoxystrobin dissipation and its effect on soil microbial community structure and function in the presence of chlorothalonil, chlortetracycline and ciprofloxacin. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2020; 257:113578. [PMID: 31806458 DOI: 10.1016/j.envpol.2019.113578] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/26/2019] [Revised: 10/22/2019] [Accepted: 11/04/2019] [Indexed: 06/10/2023]
Abstract
The residual characteristics and the adsorption-desorption behaviors of azoxystrobin (AZO) as well as the soil ecological effects in the individual repeated treatments of AZO and its combination with chlorothalonil (CTL), chlortetracycline (CTC) and ciprofloxacin (CIP) were systematically studied in organic manure (OM)-amended soil under laboratory conditions. The presence of CTL, CTC, and CIP, both individually and combined, decreased the sorption affinity of AZO with the Freundlich adsorption and desorption coefficient decreasing by 0.3-24.2%, and CTC and CIP exhibited greater adverse effects than CTL. AZO dissipated slowly and the residues significantly accumulated during ten repeated treatments. The dissipation of AZO was inhibited to different degrees in the combined treatments. Biolog analysis revealed that the soil microbial functional diversity in the OM-soil + AZO and OM-soil + AZO + CTL treatments was higher than that in the OM-soil treatment during the former three repeated treatments, but which was inhibited during the latter seven repeated treatments. The soil microbial functional diversity in the OM-soil + AZO + CTC, OM-soil + AZO + CIP and OM-soil + AZO + CTL + CTC + CIP treatments was inhibited during the ten repeated treatments compared with OM-soil treatment. Metagenomic results showed that all repeated treatments significantly increased the relative abundance of Actinobacteria, but significantly decreased that of Proteobacteria and Firmicutes during the ten repeated treatments. Furthermore, the relative abundance of soil dominant bacterial genera Rhodococcus, Mycobacterium and Arthrobacter in all the repeated treatments significantly increased by 1.5-1283.9% compared with the OM-soil treatment. It is concluded that coexistence of CTL, CTC and CIP, both individually and combined, with AZO can inhibit the dissipation of AZO, reduce the adsorption affinity of AZO on soil, and alter the soil microbial community structure and functional diversity.
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Affiliation(s)
- Lingxi Han
- Tobacco Research Institute of Chinese Academy of Agricultural Sciences (CAAS), Qingdao 266101, PR China
| | - Yalei Liu
- Tobacco Research Institute of Chinese Academy of Agricultural Sciences (CAAS), Qingdao 266101, PR China
| | - Kuan Fang
- Tobacco Research Institute of Chinese Academy of Agricultural Sciences (CAAS), Qingdao 266101, PR China
| | - Xiaolian Zhang
- Tobacco Research Institute of Chinese Academy of Agricultural Sciences (CAAS), Qingdao 266101, PR China
| | - Tong Liu
- Tobacco Research Institute of Chinese Academy of Agricultural Sciences (CAAS), Qingdao 266101, PR China
| | - Fenglong Wang
- Tobacco Research Institute of Chinese Academy of Agricultural Sciences (CAAS), Qingdao 266101, PR China
| | - Xiuguo Wang
- Tobacco Research Institute of Chinese Academy of Agricultural Sciences (CAAS), Qingdao 266101, PR China.
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19
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Papazlatani CV, Karas PA, Tucat G, Karpouzas DG. Expanding the use of biobeds: Degradation and adsorption of pesticides contained in effluents from seed-coating, bulb disinfestation and fruit-packaging activities. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2019; 248:109221. [PMID: 31310935 DOI: 10.1016/j.jenvman.2019.06.122] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/27/2019] [Revised: 06/26/2019] [Accepted: 06/27/2019] [Indexed: 06/10/2023]
Abstract
Agro-food industries that use pesticides constitute significant point sources for the contamination of natural water resources. Despite that, little is known about the treatment of their pesticide-contaminated effluents. Biobeds could be a possible solution for the depuration of these effluents. In this context, we explored the degradation and adsorption of pesticides used in seed-coating (carboxin (CBX), metalaxyl-M (MET-M), fluxapyroxad (FLX), fludioxonil (FLD)), bulb-dipping (chlorothalonil (CHT), thiabendazole (TBZ), FLD) and fruit-packaging activities (FLD) in a biomixture, used as biobed packing material, and in soil. The degradation of pesticides was tested individually and in mixtures relevant to their industrial use, while FLD was also tested at different concentrations (10, 20, and 150 mg kg-1) representing its use in the different industries. CBX, FLD, and CHT, when applied individually, and all other pesticides when applied in mixtures, degraded more rapidly in biomixture than in soil. In most cases pesticides application in mixtures retarded their degradation. This was more pronounced in soil than in biomixture, especially for MET-M and FLD. CHT had the most prominent inhibitory effect on the degradation of TBZ and FLD. FLD degradation showed a dose-dependent pattern (DT50 42.4 days at 10 mg kg-1 and 107.6 days at 150 mg kg-1). All pesticides showed higher adsorption affinity in the biomixture (Kf = 3.23-123.3 g mL-1) compared to soil (Kf = 1.15-31.2 g mL-1). We provide initial evidence for the potential of the tested biomixture to remove pesticides contained in effluents produced by different agro-industrial activities. Tests in full-scale biobeds packed with this biomixture will unravel their full depuration potential for the treatment of these agro-industrial effluents.
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Affiliation(s)
- Christina V Papazlatani
- University of Thessaly, Department of Biochemistry and Biotechnology, Laboratory of Plant and Environmental Biotechnology, Viopolis, 41500, Larissa, Greece
| | - Panagiotis A Karas
- University of Thessaly, Department of Biochemistry and Biotechnology, Laboratory of Plant and Environmental Biotechnology, Viopolis, 41500, Larissa, Greece
| | - Guillermo Tucat
- Centro de Recursos Naturales Renovables de la Zona Semiárida (CERZOS), Universidad Nacional del Sur-CONICET, Camino de la Carrindanga km 7, (8000), Bahía Blanca, Argentina
| | - Dimitrios G Karpouzas
- University of Thessaly, Department of Biochemistry and Biotechnology, Laboratory of Plant and Environmental Biotechnology, Viopolis, 41500, Larissa, Greece.
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20
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Santovito A, Gendusa C, Ferraro F, Musso I, Costanzo M, Ruberto S, Cervella P. Genomic damage induced by the widely used fungicide chlorothalonil in peripheral human lymphocytes. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2018; 161:578-583. [PMID: 29929134 DOI: 10.1016/j.ecoenv.2018.06.047] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/15/2018] [Revised: 06/13/2018] [Accepted: 06/14/2018] [Indexed: 06/08/2023]
Abstract
Chlorothalonil is an important broad spectrum fungicide widely used in agriculture, silviculture, and urban settings. As a result of its massive use, chlorothalonil was found in all environmental matrices, with consequent risks to the health of terrestrial and aquatic organisms, as well as for humans. We analyzed the effects of chlorothalonil on human lymphocytes using in vitro chromosomal aberrations (CAs) and micronuclei (MNi) assays. Lymphocytes were exposed to five concentrations of chlorothalonil: 0.600 µg/mL, 0.060 µg/mL, 0.030 µg/mL, 0.020 µg/mL, and 0.015 µg/mL, where 0.020 and 0.600 µg/mL represent the ADI and the ARfD concentration values, respectively, established by FAO/WHO for this compound; 0.030 and 0.060 μg/mL represent intermediate values of these concentrations and 0.015 μg/mL represents the ADI value established by the Canadian health and welfare agency. We observed cytogenetic effects of chlorothalonil on cultured human lymphocytes in terms of increased CAs and MNi frequencies at all tested concentrations, including the FAO/WHO ADI and ARfD values of 0.020 and 0.600 μg/mL, respectively, but with exception of the Canadian ADI value of 0.015 μg/mL. Finally, no sexes differences were found in the levels of CAs and MNi induced by different chlorothalonil concentrations. Similarly, the mitotic index and the cytokinesis-block proliferation index did not show any significant effect on the proliferative capacity of the cells, although at the chlorothalonil concentration of 0.600 μg/mL the P-values of both indices were borderline.
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Affiliation(s)
- Alfredo Santovito
- University of Turin, Department of Life Sciences and Systems Biology, Via Accademia Albertina n. 13, 10123 Torino, Italy.
| | - Claudio Gendusa
- University of Turin, Department of Life Sciences and Systems Biology, Via Accademia Albertina n. 13, 10123 Torino, Italy
| | - Francesca Ferraro
- University of Turin, Department of Life Sciences and Systems Biology, Via Accademia Albertina n. 13, 10123 Torino, Italy
| | - Irene Musso
- University of Turin, Department of Life Sciences and Systems Biology, Via Accademia Albertina n. 13, 10123 Torino, Italy
| | - Maria Costanzo
- University of Turin, Department of Life Sciences and Systems Biology, Via Accademia Albertina n. 13, 10123 Torino, Italy
| | - Stefano Ruberto
- University of Turin, Department of Life Sciences and Systems Biology, Via Accademia Albertina n. 13, 10123 Torino, Italy
| | - Piero Cervella
- University of Turin, Department of Life Sciences and Systems Biology, Via Accademia Albertina n. 13, 10123 Torino, Italy
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Simultaneous Determination of Dimethenamid, Saflufenacil and their Metabolites in Maize Using a Modified QuEChERS Method and Liquid Chromatography-Tandem Mass Spectrometry. FOOD ANAL METHOD 2018. [DOI: 10.1007/s12161-018-1321-z] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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22
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Zhang M, Wang W, Wang J, Teng Y, Xu Z. Dynamics of biochemical properties associated with soil nitrogen mineralization following nitrification inhibitor and fungicide applications. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2017; 24:11340-11348. [PMID: 28303541 DOI: 10.1007/s11356-017-8762-6] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/30/2016] [Accepted: 03/07/2017] [Indexed: 06/06/2023]
Abstract
Agrochemical applications may have side effects on soil biochemical properties related to soil nitrogen (N) mineralization and thus affect N cycling. The present study aimed to evaluate the effects of nitrification inhibitor 3,4-dimethylpyrazole phosphate (DMPP) and fungicide iprodione on soil neutral protease (NPR), alkaline protease (APR), chitinase (CHI), and their functional genes (nprA, aprA, and chiA) related to soil N mineralization. The following four treatments were included: blank control (CK), single DMPP application (DAA), weekly iprodione applications (IPR), and the combined applications of DMPP and iprodione (DI). Compared with the CK treatment, DMPP application significantly inhibited the CHI activity in the first 14 days of incubation, and iprodione applications, particularly when applied alone, decreased the NPR, APR, and CHI activities. Relative to the IPR treatment, extra DMPP application had the potential to alleviate the inhibitory effects of iprodione on the activities of these enzymes. DMPP application significantly increased aprA gene abundances after 14 days of incubation. However, repeated iprodione applications, alone or with the DMPP, decreased nprA and chiA gene abundances. Relative to the CK treatment, DMPP application generated negligible effects on the positive/negative correlations between soil enzyme activities and the corresponding functional gene abundances. However, the positive correlation between the CHI activity and chiA gene abundance was changed to negative correlation by repeated iprodione applications, alone or together with the DMPP. Our results demonstrated that agrochemical applications, particularly repeated fungicide applications, can have inadvertent effects on enzyme activities and functional gene abundances associated with soil N mineralization.
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Affiliation(s)
- Manyun Zhang
- Environmental Futures Research Institute, School of Natural Sciences, Griffith University, Brisbane, QLD, 4111, Australia.
- Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences, Nanjing, 210008, China.
| | - Weijin Wang
- Environmental Futures Research Institute, School of Natural Sciences, Griffith University, Brisbane, QLD, 4111, Australia
- Department of Science, Information Technology and Innovation, Dutton Park, QLD, 4102, Australia
| | - Jun Wang
- Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences, Nanjing, 210008, China
- Chongqing Research Academy of Environmental Sciences, Chongqing, 401147, China
| | - Ying Teng
- Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences, Nanjing, 210008, China.
| | - Zhihong Xu
- Environmental Futures Research Institute, School of Natural Sciences, Griffith University, Brisbane, QLD, 4111, Australia.
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Hu W, Zhang Y, Huang B, Teng Y. Soil environmental quality in greenhouse vegetable production systems in eastern China: Current status and management strategies. CHEMOSPHERE 2017; 170:183-195. [PMID: 27988454 DOI: 10.1016/j.chemosphere.2016.12.047] [Citation(s) in RCA: 101] [Impact Index Per Article: 12.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/30/2016] [Revised: 12/08/2016] [Accepted: 12/10/2016] [Indexed: 05/06/2023]
Abstract
Greenhouse vegetable production (GVP) has become an important source of public vegetable consumption and farmers' income in China. However, various pollutants can be accumulated in GVP soils due to the high cropping index, large agricultural input, and closed environment. Ecological toxicity caused by excessive pollutants' accumulation can then lead to serious health risks. This paper was aimed to systematically review the current status of soil environmental quality, analyze their impact factors, and consequently to propose integrated management strategies for GVP systems. Results indicated a decrease in soil pH, soil salinization, and nutrients imbalance in GVP soils. Fungicides, remaining nutrients, antibiotics, heavy metals, and phthalate esters were main pollutants accumulating in GVP soils comparing to surrounding open field soils. Degradation of soil ecological function, accumulation of major pollutants in vegetables, deterioration of neighboring water bodies, and potential human health risks has occurred due to the changes of soil properties and accumulation of pollutants such as heavy metals and fungicides in soils. Four dominant factors were identified leading to the above-mentioned issues including heavy application of agricultural inputs, outmoded planting styles with poor environmental protection awareness, old-fashion regulations, unreasonable standards, and ineffective supervisory management. To guarantee a sustainable GVP development, several strategies were suggested to protect and improve soil environmental quality. Implementation of various strategies not only requires the concerted efforts among different stakeholders, but also the whole lifecycle assessment throughout the GVP processes as well as effective enforcement of policies, laws, and regulations.
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Affiliation(s)
- Wenyou Hu
- Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China.
| | - Yanxia Zhang
- Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China
| | - Biao Huang
- Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China.
| | - Ying Teng
- Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China
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Teng Y, Zhang M, Yang G, Wang J, Christie P, Luo Y. Successive chlorothalonil applications inhibit soil nitrification and discrepantly affect abundances of functional genes in soil nitrogen cycling. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2017; 24:3562-3571. [PMID: 27878776 DOI: 10.1007/s11356-016-8080-4] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/05/2016] [Accepted: 11/08/2016] [Indexed: 06/06/2023]
Abstract
Broad-spectrum fungicide chlorothalonil (CTN) is successively applied into intensive agriculture soil. However, the impacts of successive CTN applications on soil nitrification and related microorganisms remain poorly understood. A microcosm study was conducted to reveal the effects of successive CTN applications on soil nitrification and functional genes involved in soil nitrogen (N) cycling. The CTN at the dosages of 5 mg kg-1 dry soil (RD) and 25 mg kg-1 dry soil (5RD) was successively applied into the test soil at 7-day intervals which resulted in the accumulations of CTN residues. After 28 days of incubation, CTN residues in the RD and 5RD treatments were 3.14 and 69.7 mg kg-1 dry soil respectively. Net nitrification rates in the RD and 5RD treatments were lower than that obtained from the blank control (CK). Real-time PCR analysis revealed that AOA and AOB amoA gene abundances were significantly decreased by CTN applications. Moreover, CTN applications also discrepantly decreased the abundances of functional genes involved in soil denitrification, with the exception of nosZ gene. Principal component analysis further supported the observation that successive CTN applications could result in enhanced ecological toxicity.
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Affiliation(s)
- Ying Teng
- Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences, Nanjing, 210008, China.
| | - Manyun Zhang
- Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences, Nanjing, 210008, China
| | - Guangmei Yang
- Jiangsu Vocational College of Agriculture and Forestry, Jurong, 212400, China
| | - Jun Wang
- Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences, Nanjing, 210008, China
| | - Peter Christie
- Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences, Nanjing, 210008, China
| | - Yongming Luo
- Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences, Nanjing, 210008, China
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Fang H, Han L, Cui Y, Xue Y, Cai L, Yu Y. Changes in soil microbial community structure and function associated with degradation and resistance of carbendazim and chlortetracycline during repeated treatments. THE SCIENCE OF THE TOTAL ENVIRONMENT 2016; 572:1203-1212. [PMID: 27524727 DOI: 10.1016/j.scitotenv.2016.08.038] [Citation(s) in RCA: 64] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/16/2016] [Revised: 08/05/2016] [Accepted: 08/05/2016] [Indexed: 05/04/2023]
Abstract
The degradation characteristics of carbendazim (CBD) and chlortetracycline (CTC) in individual and combined treatments, and dynamics of soil microbial structural and functional diversity as well as their potential relations were studied during three repeated treatments using different concentrations. The results showed that the degradation half-life of CBD at concentrations of 3mg/kg and 6mg/kg obviously increased, but that of CTC at levels of 1mg/kg and 10mg/kg decreased with increasing treatment frequency. Soil microbial activity and functional diversity displayed the suppression trend in CBD treatment and the suppression-recovery-stimulation trend in CTC and CBD+CTC treatments, which were consistent with the findings of decreased degradation rate of CBD and increased degradation rate of CTC. 16S amplicon sequencing analysis revealed five potentially dominant CTC-resistant microbial genera including Bacillus, Actinobacillus, Pseudomonas, Mycobacterium, and Corynebacterium, which may mainly carry major facilitator superfamily transporter protein, ribosomal protection protein, and other proteins encoded by tetA, tetB, tetC, tetH, tetL, tetM, tetO, tetV, tetW, tetX, tetZ, tet33, and tet39. These five dominant genera may jointly contribute to the elevated bacterial community resistance to CTC. Our findings provided a better understanding of microbial community structure and function changes in repeatedly treated soils with CBD and CTC.
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Affiliation(s)
- Hua Fang
- Institute of Pesticide and Environmental Toxicology, College of Agriculture & Biotechnology, Zhejiang University, Hangzhou 310058, China
| | - Lingxi Han
- Institute of Pesticide and Environmental Toxicology, College of Agriculture & Biotechnology, Zhejiang University, Hangzhou 310058, China
| | - Yanli Cui
- Institute of Pesticide and Environmental Toxicology, College of Agriculture & Biotechnology, Zhejiang University, Hangzhou 310058, China
| | - Yongfei Xue
- Institute of Pesticide and Environmental Toxicology, College of Agriculture & Biotechnology, Zhejiang University, Hangzhou 310058, China
| | - Lin Cai
- Division of Life Science, Hong Kong University of Science and Technology, Clear Water Bay, Hong Kong, China
| | - Yunlong Yu
- Institute of Pesticide and Environmental Toxicology, College of Agriculture & Biotechnology, Zhejiang University, Hangzhou 310058, China.
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