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Imfeld G, Meite F, Ehrhart L, Fournier B, Heger TJ. Dissipation of pesticides and responses of bacterial, fungal and protistan communities in a multi-contaminated vineyard soil. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2024; 284:116994. [PMID: 39236652 DOI: 10.1016/j.ecoenv.2024.116994] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/20/2024] [Revised: 08/22/2024] [Accepted: 08/31/2024] [Indexed: 09/07/2024]
Abstract
The effect of pesticide residues on non-target microorganisms in multi-contaminated soils remains poorly understood. In this study, we examined the dissipation of commonly used pesticides in a multi-contaminated vineyard soil and its effect on bacterial, fungal, and protistan communities. We conducted laboratory soil microcosm experiments under varying temperature (20°C and 30°C) and water content (20 % and 40 %) conditions. Pesticide dissipation half-lives ranged from 27 to over 300 days, depending on the physicochemical properties of the pesticides and the soil conditions. In both autoclaved and non-autoclaved soil experiments, over 50 % of hydrophobic pesticides (dimethomorph > isoxaben > simazine = atrazine = carbendazim) dissipated within 200 days at 20°C and 30°C. However, the contribution of biodegradation to the overall dissipation of soluble pesticides (rac-metalaxyl > isoproturon = pyrimethanil > S-metolachlor) increased to over 75 % at 30°C and 40 % water content. This suggests that soluble pesticides became more bioavailable, with degradation activity increasing with higher temperature and soil water content. In contrast, the primary process contributing to the dissipation of hydrophobic pesticides was sequestration to soil. High-throughput amplicon sequencing analysis indicated that water content, temperature, and pesticides had domain-specific effects on the diversity and taxonomic composition of bacterial, fungal, and protistan communities. Soil physicochemical properties had a more significant effect than pesticides on the various microbial domains in the vineyard soil. However, pesticide exposure emerged as a secondary factor explaining the variations in microbial communities, with a more substantial effect on protists compared to bacterial and fungal communities. Overall, our results highlight the variability in the dissipation kinetics and processes of pesticides in a multi-contaminated vineyard soil, as well as their effects on bacterial, fungal, and protistan communities.
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Affiliation(s)
- Gwenaël Imfeld
- Earth & Environment Strasbourg, Université de Strasbourg/EOST/ENGEES, CNRS UMR 7063, 5 rue Descartes, Strasbourg F-67084, France.
| | - Fatima Meite
- Earth & Environment Strasbourg, Université de Strasbourg/EOST/ENGEES, CNRS UMR 7063, 5 rue Descartes, Strasbourg F-67084, France
| | - Lucas Ehrhart
- Soil Science and Environment Group, CHANGINS, HES-SO University of Applied Sciences and Arts Western Switzerland, Route de Duillier 50, Nyon 1260, Switzerland
| | - Bertrand Fournier
- Soil Science and Environment Group, CHANGINS, HES-SO University of Applied Sciences and Arts Western Switzerland, Route de Duillier 50, Nyon 1260, Switzerland; Institute of Environmental Science and Geography, University of Potsdam, Karl-Liebknecht-Str. 24-25, Potsdam 14476, Germany
| | - Thierry J Heger
- Soil Science and Environment Group, CHANGINS, HES-SO University of Applied Sciences and Arts Western Switzerland, Route de Duillier 50, Nyon 1260, Switzerland
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de Souza AR, Bernardes RC, Barbosa WF, Dos Santos Araújo R, Martins GF, Lima MAP. A mixture of mesotrione and atrazine harms adults and larvae of the predatory wasp Polistes satan. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 923:171526. [PMID: 38458447 DOI: 10.1016/j.scitotenv.2024.171526] [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: 01/02/2024] [Revised: 02/26/2024] [Accepted: 03/04/2024] [Indexed: 03/10/2024]
Abstract
Herbicides have been intensively used for weed control, raising concerns about their potentially adverse effects on non-target organisms. Research on the effects of these common agrochemicals on beneficial insects and the ecosystem services they provide (e.g., predation and pollination) is scarce. Therefore, we tested whether a commercial formulation comprising a mixture of mesotrione and atrazine was detrimental to adult females and larvae of the Neotropical predatory social wasp Polistes satan, which is an effective natural enemy of crop pests. Wasps were individually fed syrups contaminated with different concentrations of the herbicide above and below the maximum label rate (MLR = 12 mL/L). Survival was assessed. The locomotor activity, immune response, and midgut morphology of adults as well as the immune response of the larvae were also studied. Herbicide concentrations far above the MLR (12, 40, and 100 times) caused adult mortality, whereas lower concentrations (0.5, 1, and 6 times) did not. Herbicide exposure at 0.5 to 12 times the MLR increased adult activity. Adult exposure at 0.1 or 0.5 times the MLR did not affect melanotic encapsulation of foreign bodies but led to changes in the morphology of the midgut epithelium and peritrophic matrix. In larvae, the ingestion of herbicide at 0.1 or 0.2 times the MLR (corresponding to 9.6 and 19.2 ng of herbicide per individual) did not cause mortality but decreased their melanization-encapsulation response. Increased locomotor activity in herbicide-exposed adults can affect their foraging activity. The altered midgut morphology of adults coupled with the decreased immune response in larvae caused by herbicide exposure at realistic concentrations can increase the susceptibility of wasps to infections. Therefore, herbicides are toxic to predatory wasps.
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Affiliation(s)
- André Rodrigues de Souza
- Departamento de Biologia, Faculdade de Filosofia, Ciências e Letras de Ribeirão Preto, Universidade de São Paulo, São Paulo, SP, Brazil.
| | | | | | - Renan Dos Santos Araújo
- Istituto de Ciências Biológicas e da Saúde, Campus Universitário do Araguaia, Universidade Federal de Mato Grosso, Pontal do Araguaia, MT, Brazil
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Jenkins JA, Draugelis-Dale RO, Hoffpauir NM, Baudoin BA, Matkin C, Driver L, Hodges S, Brown BL. Flow cytometric assessments of metabolic activity in bacterial assemblages provide insight into ecosystem condition along the Buffalo National River, Arkansas. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 921:170462. [PMID: 38311076 DOI: 10.1016/j.scitotenv.2024.170462] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/29/2023] [Revised: 01/22/2024] [Accepted: 01/24/2024] [Indexed: 02/06/2024]
Abstract
The Buffalo National River (BNR), on karst terrain in Arkansas, is considered an extraordinary water resource. Water collected in Spring 2017 along BNR was metagenomically analyzed using 16S rDNA, and for 17 months (5/2017-11/2018), bacterial responses were measured in relation to nutrients sampled along a stretch of BNR near a concentrated animal feed operation (CAFO) on Big Creek. Because cell count and esterase activity can increase proportionally with organic enrichment, they were hypothesized to be elevated near the CAFO. Counts (colony forming units; CFUs) were different among sites for 73 % of the months; Big Creek generated highest CFUs 27 % of the time, with the closest downstream site at 13.3 %. Esterase activity was different among sites 94 % of the time, with Big Creek exhibiting lowest activity 71 % of the time. Over the months, activity was similar across sites at ~70 % active, except at Big Creek (56 %). The α-diversity of BNR microbial consortia near a wastewater treatment plant (WWTP) and the CAFO was related to distance from the WWTP and CAFO. The inverse relationship between high CFUs and low esterase activity at Big Creek (r = -0.71) actuated in vitro exposures of bacteria to organic wastewater contaminants (OWC) previously identified in the watershed. Exponential-phase Escherichia coli (stock strain), Streptococcus suis (avirulent, from swine), and S. dysgalactiae (virulent, from silver carp, Hypophthalmichthys molitrix) were incubated with atrazine, pharmaceuticals (17 α-ethynylestradiol and trenbolone), and antimicrobials (tylosin and butylparaben). Bacteria were differentially responsive. Activity varied with exposure time and OWC type, but not concentration; atrazine decreased it most. Taken together - the metagenomic taxonomic similarities along BNR, slightly higher bacterial growth and lower bacterial esterase at the CAFO, and the lab exposures of bacterial strains showing that OWC altered metabolism - the results indicated that bioactive OWC entering the watershed can strongly influence microbial processes in the aquatic ecosystem.
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Affiliation(s)
- Jill A Jenkins
- U.S. Geological Survey, Wetland and Aquatic Research Center, 700 Cajundome Blvd., Lafayette, LA 70506, USA.
| | - Rassa O Draugelis-Dale
- U.S. Geological Survey, Wetland and Aquatic Research Center, 700 Cajundome Blvd., Lafayette, LA 70506, USA
| | - Nina M Hoffpauir
- U.S. Geological Survey, Wetland and Aquatic Research Center, 700 Cajundome Blvd., Lafayette, LA 70506, USA
| | - Brooke A Baudoin
- U.S. Geological Survey, Wetland and Aquatic Research Center, 700 Cajundome Blvd., Lafayette, LA 70506, USA
| | - Caroline Matkin
- U.S. Geological Survey, Wetland and Aquatic Research Center, 700 Cajundome Blvd., Lafayette, LA 70506, USA.
| | - Lucas Driver
- U.S. Geological Survey, Lower Mississippi-Gulf Water Science Center, 401 Hardin Rd., Little Rock, AR 72211, USA.
| | - Shawn Hodges
- Buffalo National River, National Park Service, 402 N. Walnut St., Harrison, AR 72601, USA.
| | - Bonnie L Brown
- Department of Biological Sciences, University of New Hampshire, 105 Main St., Durham, NH 03824, USA.
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Liu Z, Han L, Zhang X, Chen S, Wang X, Fang H. Core bacteria carrying the genes associated with the degradation of atrazine in different soils. ENVIRONMENT INTERNATIONAL 2023; 181:108303. [PMID: 37948867 DOI: 10.1016/j.envint.2023.108303] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/12/2023] [Revised: 10/27/2023] [Accepted: 11/01/2023] [Indexed: 11/12/2023]
Abstract
Atrazine residues can pose serious threats to soil ecology and human health. Currently, the underlying relationship between soil microbial communities and the degradation genes associated with atrazine degradation remains unclear. In this study, the degradation characteristics of atrazine was investigated in ten different soil types. Further, diversity and abundance of degradation genes and succession of the bacterial community were also studied. The degradation of 10 mg/kg atrazine in different soil types exhibited an initial rapid trend followed by a gradual slowdown, adhering to the first-order kinetic equation. Atrazine significantly increased the absolute abundance of atz degradation genes. The increase in the absolute abundance of atzC gene was the largest, whereas that of atzA gene was the smallest, and the trzD gene was only detected in the Binzhou loam soil. Co-occurrence network analysis showed that the number of potential bacterial hosts of atzC was the highest compared with the other atz genes. Atrazine also altered the structural composition of the soil microbial community. The relative abundances of Ochrobactrum, Nocardiopsis, Lactobacillus, and Brevibacterium was increased in the atrazine-treated soils, while those of Conexibate, Solirubacter, and Micromonospora was decreased significantly compared with the control. Additionally, four atrazine-degrading bacterial strains Rhizobium AT1, Stenotrophomonas AT2, Brevibacterium AT3, and Bacillus AT4 were isolated from the atrazine-treated soils. After 14 d for inoculation, their degradation rate for 10 mg/L atrazine ranged from 17.56 % to 30.55 %. Moreover, the relative abundances of the bacterial genera, including these four isolates, in the atrazine-treated soil were significantly higher than those in the control, indicating that they were involved in the synergistic degradation of atrazine in the soil. This study revealed the degradation characteristics of atrazine, distribution of degradation genes, and succession of microbial communities, and explored the internal relationship between microbial community structure and atrazine degradation mechanisms in different soil types.
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Affiliation(s)
- Zhiyuan Liu
- Tobacco Research Institute of Chinese Academy of Agricultural Sciences (CAAS), Qingdao 266101, PR China; Institute of Pesticide and Environmental Toxicology, College of Agriculture & Biotechnology, Zhejiang University, Hangzhou 310058, PR China
| | - Lingxi Han
- College of Horticulture, Qingdao Agricultural University, Qingdao 266109, PR China
| | - Xin Zhang
- Tobacco Research Institute of Chinese Academy of Agricultural Sciences (CAAS), Qingdao 266101, PR China
| | - Shiyu Chen
- Institute of Pesticide and Environmental Toxicology, College of Agriculture & Biotechnology, Zhejiang University, Hangzhou 310058, PR China
| | - Xiuguo Wang
- Tobacco Research Institute of Chinese Academy of Agricultural Sciences (CAAS), Qingdao 266101, PR China.
| | - Hua Fang
- Institute of Pesticide and Environmental Toxicology, College of Agriculture & Biotechnology, Zhejiang University, Hangzhou 310058, PR China; Key Laboratory of Biology of Crop Pathogens and Insects of Zhejiang Province, Key Laboratory of Molecular Biology of Crop Pathogens and Insects, Ministry of Agriculture, Zhejiang University, Hangzhou 310058, PR China.
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Oyeyiola YB, Opeolu BO. Immediate effects of atrazine application on soil organic carbon and selected macronutrients and amelioration by sawdust biochar pretreatment. PHYSICAL SCIENCES REVIEWS 2023. [DOI: 10.1515/psr-2022-0241] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/05/2023]
Abstract
Abstract
Increasing use of herbicides has contributed immensely to current soil and water degradation in the tropics. Published works on effects of herbicides on soil organic carbon (SOC) – a major indicator for soil health and macronutrients and their enhancement by biochar are scarce for soils in Africa despite heavy herbicide applications every cropping season. This incubation trial evaluated immediate effects of atrazine application on SOC and selected soil macronutrients. The potential of sawdust (SD) biochar to mitigate associated SOC and macronutrients depletion was also assessed. A total of 950 g soil was placed in each leaching column (20 cm length and 7 cm diameter). The experiment was a factorial combination of four SD biochar types: SD + poultry manure (PM) pyrolyzed at 350 °C, SD-PM at 350 °C, SD + PM at 450 °C and SD-PM at 450 °C applied at two rates of 5 and 10 t/ha equivalent to 2.38 and 4.76 g/950 g soil, respectively. Atrazine alone and absolute control (AC) that received neither biochar nor atrazine were included for comparison. The treatments were replicated thrice in completely randomized design. Appropriate biochar was applied within 5 cm soil depth, moistened to field capacity, and left to equilibrate for 2 weeks. Thereafter, 20 mL atrazine solution was applied at 2.5 kg a.i/ha (achieved through 6.75 g atrazine powder/l of distilled water). Basal NPK 15:15:15 fertilizer mixed with urea at 0.1 and 0.03 g/900 g soil, respectively, was applied to mimic farmers’ practice on atrazine treated fields. Maize seeds were thereafter sown in the treated soils and nurtured for 2 weeks. Data taken on soil pH, SOC, exchangeable bases, available phosphorus, and dry biomass weight (DBW) of maize seedlings at the expiration of the trial were subjected to two-way analysis of variance using Genstat Statistical Package with means separated using LSD at 5% probability level. There were significant reductions in soil pH (5.8%), SOC (31%), and Ex. Ca (27%) in atrazine alone soil compared to AC. Contrarily, similar atrazine treated soil pretreated with SD biochar had increased soil pH, SOC, exchangeable Ca, available P, and DBW by 5.6 (in SD + PM@450 °C), 73.6 (SD-PM@450 °C), 84 (SD + PM@450 °C), 2,338.4 (SD + PM@450 °C), and 154.8% (SD + PM@350 °C), respectively, dominantly at 10 t/ha compared to AC. Sole atrazine treated soil was, however, higher in soil available P (23.8 mg/kg) and TDBW (0.56 g) against 5.42 mg/kg and 0.42 g from AC, respectively. Biochar pH and organic carbon were the most influential biochar properties contributing significantly to SOC sequestration and macronutrient enrichment in the atrazine treated soil. Pretreatment of soils with sawdust biochar prior to atrazine application is, therefore, recommended for mitigating associated organic carbon and macronutrient depletion in the soils for enhanced maize production.
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Affiliation(s)
- Yetunde Bunmi Oyeyiola
- Department of Crop Production and Soil Science , Ladoke Akintola University of Technology , Ogbomoso , Nigeria
| | - Beatrice Olutoyin Opeolu
- Faculty of Applied Sciences , Cape Peninsula University of Technology , Cape Town , South Africa
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Hui X, Chen H, Shen S, Zhi H, Li W. Establishment of Residual Methods for Matrine in Quinoa Plants and Soil and the Effect on Soil Bacterial Community and Composition. Foods 2023; 12:foods12061337. [PMID: 36981263 PMCID: PMC10048628 DOI: 10.3390/foods12061337] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2023] [Revised: 03/09/2023] [Accepted: 03/17/2023] [Indexed: 03/30/2023] Open
Abstract
A method was developed for the determination of matrine residues in quinoa (Chenopodium quinoa Willd.) plants and soil by liquid chromatography triple quadrupole tandem mass spectrometry (LC-MS/MS) with QuEChERS clean-up. Matrine from soil, quinoa roots, stems, leaves and seeds was extracted with 25% ammonia, 20 mL acetonitrile/methanol, salted with sodium chloride (NaCl) and purified with anhydrous magnesium sulfate (MgSO4), N-propyl ethylenediamine (PSA) and graphitized carbon black (GCB). Then a chromatographic separation was performed on a Shim-pack XR-ODS II (75 mm × 2.0 mm, i. d., 2.2 µm) column with a gradient elution of 5 mmol/L ammonium formate-methanol as the mobile phase and monitored in multiple reaction monitoring modes (MRM) in electrospray positive ionization mode. The results showed that in the range of 0.005~1 mg/L, the linear correlation coefficients of matrine in the five matrices were all above 0.999. The LOQs for soil, quinoa roots, stems, leaves and seeds were 0.005, 0.005, 0.01, 0.01 and 0.005 mg/kg, respectively. The mean recoveries ranged from 74.42% to 98.37%, with RSDs of 1.25-6.84% at the three concentration addition levels. The average intra-day and inter-day recoveries were 73.92-92.36% and 78.56-90.18%, respectively, with RSDs below 8.72% and 9.43%. The recoveries and reproducibility of the method were superior. The method was used to determine the actual samples, which indicated that the half-lives of matrine in quinoa seeds, leaves, stems and soil were 1.28-1.32, 1.03-1.21, 0.81-0.92 and 0.93-0.97 d. It has a half-life below 30 d, which is an easily dissipated pesticide. The method is simple, sensitive, accurate, reliable and applicable to a wide range of applications, and it can achieve the rapid multi-residue determination of matrine to a certain extent. Next Generation Sequencing was used to explore the effects of exposure to high and low doses of matrine on soil bacterial communities and the composition of the three soils in the Qinghai Province (Haixi, Haidong and Haibei). The results showed that the number of ASVs increased significantly after treatment with matrine at an effective dose of 0.1 mg/kg than after treatment with matrine at an effective dose of 5.0 mg/kg. Similarly, bacterial abundance was higher after 0.1 mg/kg of matrine treatment than after 5.0 mg/kg of matrine treatment. The inhibitory effect on some bacterial flora was enhanced with an increase in matrine application, while the inhibitory effect on bacterial flora was weakened with time. Applying a certain dose of matrine e changed the relative abundance of the dominant bacterial genera of the soil bacteria.
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Affiliation(s)
- Xiangjuan Hui
- Academy of Agriculture and Forestry, Qinghai University, Xining 810016, China
- College of Agriculture and Animal Husbandry, Qinghai University, Xining 810016, China
- State Key Laboratory of Plateau Ecology and Agriculture, Qinghai University, Xining 810016, China
- Key Laboratory of Integrated Management of Agricultural Pest in Qinghai Province, Xining 810016, China
| | - Hongyu Chen
- Academy of Agriculture and Forestry, Qinghai University, Xining 810016, China
- State Key Laboratory of Plateau Ecology and Agriculture, Qinghai University, Xining 810016, China
- Key Laboratory of Integrated Management of Agricultural Pest in Qinghai Province, Xining 810016, China
| | - Shuo Shen
- Academy of Agriculture and Forestry, Qinghai University, Xining 810016, China
- State Key Laboratory of Plateau Ecology and Agriculture, Qinghai University, Xining 810016, China
- Key Laboratory of Integrated Management of Agricultural Pest in Qinghai Province, Xining 810016, China
| | - Hui Zhi
- Academy of Agriculture and Forestry, Qinghai University, Xining 810016, China
- State Key Laboratory of Plateau Ecology and Agriculture, Qinghai University, Xining 810016, China
- Key Laboratory of Integrated Management of Agricultural Pest in Qinghai Province, Xining 810016, China
| | - Wei Li
- Academy of Agriculture and Forestry, Qinghai University, Xining 810016, China
- State Key Laboratory of Plateau Ecology and Agriculture, Qinghai University, Xining 810016, China
- Key Laboratory of Integrated Management of Agricultural Pest in Qinghai Province, Xining 810016, China
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The Effects of Atrazine, Diuron, Fluazifop-P-butyl, Haloxyfop-P-methyl, and Pendimethalin on Soil Microbial Activity and Diversity. Appl Microbiol 2023. [DOI: 10.3390/applmicrobiol3010007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
Understanding the impacts of herbicides on soil microbial communities is important, as these organisms mediate a wide range of ecosystem services. Here, we investigated whether the diversity and function of soil microbial communities were significantly influenced by one-off applications of atrazine, diuron, fluazifop-P-butyl, haloxyfop-P-methyl and pendimethalin as pure compounds at their recommended doses over multiple time points (1, 3, 7, 14, 30 and 60 days). Phylogenetic marker gene sequencing revealed that none of the herbicides influenced the numbers of bacterial and archaeal taxa or the evenness of their abundances. Similarly, none of the herbicides influenced the composition of bacterial and archaeal communities, except for diuron, fluazifop-P-methyl and pendimethalin, which were associated with larger relative abundances of a small number of OTUs on day 30 only. Functionally, none of the herbicides significantly influenced fluorescein diacetate hydrolysis (FDA) and beta-glucosidase activities or the induced respiratory responses of soil microbial communities to a range of substrates. These data indicate that the active herbicide ingredients tested may have minimal non-target effects when applied once at their recommended dose. Given their frequent use, it is important to next consider whether these herbicides have more pronounced effects at higher doses and application frequencies.
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Ruuskanen S, Fuchs B, Nissinen R, Puigbò P, Rainio M, Saikkonen K, Helander M. Ecosystem consequences of herbicides: the role of microbiome. Trends Ecol Evol 2023; 38:35-43. [PMID: 36243622 DOI: 10.1016/j.tree.2022.09.009] [Citation(s) in RCA: 28] [Impact Index Per Article: 28.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2022] [Revised: 09/13/2022] [Accepted: 09/16/2022] [Indexed: 12/14/2022]
Abstract
Non-target organisms are globally exposed to herbicides. While many herbicides - for example, glyphosate - were initially considered safe, increasing evidence demonstrates that they have profound effects on ecosystem functions via altered microbial communities. We provide a comprehensive framework on how herbicide residues may modulate ecosystem-level outcomes via alteration of microbiomes. The changes in soil microbiome are likely to influence key nutrient cycling and plant-soil processes. Herbicide-altered microbiome affects plant and animal performance and can influence trophic interactions such as herbivory and pollination. These changes are expected to lead to ecosystem and even evolutionary consequences for both microbes and hosts. Tackling the threats caused by agrochemicals to ecosystem functions and services requires tools and solutions based on a comprehensive understanding of microbe-mediated risks.
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Affiliation(s)
- Suvi Ruuskanen
- Department of Biological and Environmental Science, University of Jyväskylä, FI-40014 Jyväskylä, Finland; Department of Biology, University of Turku, FI-20014 Turku, Finland.
| | - Benjamin Fuchs
- Biodiversity Unit, University of Turku, FI-20014 Turku, Finland
| | - Riitta Nissinen
- Department of Biological and Environmental Science, University of Jyväskylä, FI-40014 Jyväskylä, Finland
| | - Pere Puigbò
- Department of Biology, University of Turku, FI-20014 Turku, Finland; Nutrition and Health Unit, Eurecat Technology Centre of Catalonia, Reus, Catalonia, Spain; Department of Biochemistry and Biotechnology, Rovira I Virgili University, Tarragona, Catalonia, Spain
| | - Miia Rainio
- Department of Biology, University of Turku, FI-20014 Turku, Finland
| | - Kari Saikkonen
- Biodiversity Unit, University of Turku, FI-20014 Turku, Finland
| | - Marjo Helander
- Department of Biology, University of Turku, FI-20014 Turku, Finland
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Han L, Liu T, Fang K, Li X, You X, Li Y, Wang X, Wang J. Indigenous functional microbial communities for the preferential degradation of chloroacetamide herbicide S-enantiomers in soil. JOURNAL OF HAZARDOUS MATERIALS 2022; 423:127135. [PMID: 34517298 DOI: 10.1016/j.jhazmat.2021.127135] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/22/2021] [Revised: 08/22/2021] [Accepted: 09/02/2021] [Indexed: 06/13/2023]
Abstract
This study investigated indigenous functional microbial communities associated with the degradation of chloroacetamide herbicides acetochlor (ACE), S-metolachlor (S-MET) and their enantiomers in repeatedly treated soils. The results showed that biodegradation was the main process for the degradation of ACE, S-MET and their enantiomers. Eight dominant bacterial genera associated with the degradation were found: Amycolatopsis, Saccharomonospora, Mycoplasma, Myroides, Mycobacterium, Burkholderia, Afipia, and Kribbella. The S-enantiomers of ACE and S-MET were preferentially degraded, which mainly relied on Amycolatopsis, Saccharomonospora and Kribbella for the ACE S-enantiomer and Amycolatopsis and Saccharomonospora for the S-MET S-enantiomer. Importantly, the relative abundances of Amycolatopsis and Saccharomonospora increased by 146.3%-4467.2% in the S-enantiomer treatments of ACE and S-MET compared with the control, which were significantly higher than that in the corresponding R-enantiomer treatments (25.3%-4168.2%). Both metagenomic and qPCR analyses demonstrated that four genes, ppah, alkb, benA, and p450, were the dominant biodegradation genes (BDGs) potentially involved in the preferential degradation of the S-enantiomers of ACE and S-MET. Furthermore, network analysis suggested that Amycolatopsis, Saccharomonospora, Mycoplasma, Myroides, and Mycobacterium were the potential hosts of these four BDGs. Our findings indicated that Amycolatopsis and Saccharomonospora might play pivotal roles in the preferential degradation of the S-enantiomers of ACE and S-MET.
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Affiliation(s)
- Lingxi Han
- Tobacco Research Institute of Chinese Academy of Agricultural Sciences, Qingdao 266101, PR China
| | - Tong Liu
- Tobacco Research Institute of Chinese Academy of Agricultural Sciences, Qingdao 266101, PR China
| | - Kuan Fang
- Tobacco Research Institute of Chinese Academy of Agricultural Sciences, Qingdao 266101, PR China
| | - Xianxu Li
- College of Resources and Environment, Key Laboratory of Agricultural Environment, Shandong Agricultural University, Tai'an 271000, PR China
| | - Xiangwei You
- Tobacco Research Institute of Chinese Academy of Agricultural Sciences, Qingdao 266101, PR China
| | - Yiqiang Li
- Tobacco Research Institute of Chinese Academy of Agricultural Sciences, Qingdao 266101, PR China
| | - Xiuguo Wang
- Tobacco Research Institute of Chinese Academy of Agricultural Sciences, Qingdao 266101, PR China.
| | - Jun Wang
- College of Resources and Environment, Key Laboratory of Agricultural Environment, Shandong Agricultural University, Tai'an 271000, PR China.
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10
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Li D, Zheng X, Lin L, An Q, Jiao Y, Li Q, Li Z, Hong Y, Zhang K, Xie C, Yin J, Zhang H, Wang B, Hu Y, Zhu Z. Remediation of soils co-contaminated with cadmium and dichlorodiphenyltrichloroethanes by king grass associated with Piriformospora indica: Insights into the regulation of root excretion and reshaping of rhizosphere microbial community structure. JOURNAL OF HAZARDOUS MATERIALS 2022; 422:126936. [PMID: 34463272 DOI: 10.1016/j.jhazmat.2021.126936] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/15/2021] [Revised: 08/12/2021] [Accepted: 08/15/2021] [Indexed: 06/13/2023]
Abstract
Cadmium (Cd) and dichlorodiphenyltrichloroethane (DDT) are frequently detected in agricultural soils, which poses a threat to public health. This study investigated the effects of inoculation of king grass with Piriformospora indica on the remediation of soils co-contaminated with Cd and DDTs. After treatment for 90 days, the dry shoot and root biomass of king grass inoculated with P. indica markedly increased by 13.0-15.8% and 24.1-46.4%, respectively, compared with those of uninoculated plants. Inoculation with P. indica also increased the uptake of Cd and DDTs by shoots and roots of king grass. The removal efficiency of Cd and DDTs from soils reached 4.88-17.4% and 48.4-51.0%, respectively, in the presence of king grass inoculated with P. indica. Under three Cd-DDTs contamination conditions, root secretion of organic acids, alcohol, and polyamines was distinctively stimulated by P. indica inoculation of king grass compared with planting king grass alone. After phytoremediation, changes in soil bacterial and fungal community composition occurred at different contamination levels. Overall, the results showed that king grass associated with P. indica can be adopted for phytoextraction of Cd and DDTs from moderately contaminated soils by regulating root excretion and reshaping rhizosphere microbial community structure.
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Affiliation(s)
- Dong Li
- College of Tropical Crops, Hainan University, Haikou 570228, China
| | - Xiaoxiao Zheng
- College of Tropical Crops, Hainan University, Haikou 570228, China
| | - Li Lin
- Sugarcane Research Institute, Guangxi Academy of Agricultural Sciences, Nanning 53007, China
| | - Qianli An
- Ministry of Agriculture Key Lab of Molecular Biology of Crop Pathogens and Insects, Institute of Biotechnology, College of Agricultural and Biotechnology, Zhejiang University, Hangzhou 310000, China
| | - Yangqiu Jiao
- College of Tropical Crops, Hainan University, Haikou 570228, China
| | - Qiuli Li
- College of Tropical Crops, Hainan University, Haikou 570228, China
| | - Zhidong Li
- College of Tropical Crops, Hainan University, Haikou 570228, China
| | - Yi Hong
- College of Tropical Crops, Hainan University, Haikou 570228, China
| | - Kailu Zhang
- College of Tropical Crops, Hainan University, Haikou 570228, China
| | - Can Xie
- College of Tropical Crops, Hainan University, Haikou 570228, China
| | - Jing Yin
- College of Tropical Crops, Hainan University, Haikou 570228, China
| | - Haixiang Zhang
- College of Tropical Crops, Hainan University, Haikou 570228, China
| | - Baijie Wang
- College of Tropical Crops, Hainan University, Haikou 570228, China
| | - Yueming Hu
- College of Tropical Crops, Hainan University, Haikou 570228, China
| | - Zhiqiang Zhu
- College of Tropical Crops, Hainan University, Haikou 570228, China.
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11
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Araújo RDS, Bernardes RC, Martins GF. A mixture containing the herbicides Mesotrione and Atrazine imposes toxicological risks on workers of Partamona helleri. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 763:142980. [PMID: 33121769 DOI: 10.1016/j.scitotenv.2020.142980] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/24/2020] [Revised: 09/30/2020] [Accepted: 10/04/2020] [Indexed: 06/11/2023]
Abstract
A mixture of Mesotrione and Atrazine (Calaris®) has been reported as an improvement of the atrazine herbicides, which are agrochemicals used for weed control. However, its possible harmful effects on non-target organisms, including pollinators, needs to be better understood. In this work, the effects of the mix of herbicides on food consumption, behaviour (walking distance, and meandering), and the morphology of the midgut of the stingless bee Partamona helleri were studied. Foragers were orally exposed to different concentrations of the mix. The concentrations leading to 10% and 50% mortality (LC10 and LC50, respectively) were estimated and used in the analysis of behaviour and morphology. The ingestion of contaminated diets (50% aqueous sucrose solution + mix) led to a reduction in food consumption by the bees when compared to the control, bees fed a non-contaminated diet (sucrose solution). Ingestion of the LC50 diet reduced locomotor activity, increased meandering, induced the degradation of the epithelium and peritrophic matrix, and also changed the number of cells positive for signalling-pathway proteins in the midgut. These results show the potential toxicological effects and environmental impacts of the mix of herbicides in beneficial insects, including a native bee.
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12
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Serbent MP, Dos Anjos Borges LG, Quadros A, Marconatto L, Tavares LBB, Giongo A. Prokaryotic and microeukaryotic communities in an experimental rice plantation under long-term use of pesticides. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2021; 28:2328-2341. [PMID: 32880839 DOI: 10.1007/s11356-020-10614-5] [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: 04/10/2020] [Accepted: 08/23/2020] [Indexed: 06/11/2023]
Abstract
Conventional agricultural practices, such as rice plantations, often contaminate the soil and water with xenobiotics. Here we evaluated the microbiota composition in experimental rice planting with a record of prolonged pesticide use, using 16S and 18S rRNA amplicon sequencing. We investigated four components of a complete agricultural system: affluent water (A), rice rhizosphere soil (R), sediment from a storage pond (S), and effluent (E) water (drained from the storage pond). Despite the short spatial distance between our sites, the beta diversity analysis of bacterial communities showed two well-defined clusters, separating the water and sediment/rhizosphere samples; rhizosphere and sediment were richer while the effluent was less diverse. Overall, the site with the highest evenness was the rhizosphere. Unlike the bacterial communities, Shannon diversity of microeukaryotes was significantly different between A and E. The effluent presented the lowest values for all ecological indexes tested and differed significantly from all sampled sites, except on evenness. When mapped the metabolic pathways, genes corresponding to the degradation of aromatic compounds, including genes related to pesticide degradation, were identified. The most abundant genes were related to the degradation of benzoate. Our results indicate that the effluent is a selective environment for fungi. Interestingly, the overall fungal diversity was higher in the affluent, the water that reached the system before pesticide application, and where the prokaryotic diversity was the lowest. The affluent and effluent seem to have the lowest environmental quality, given the presence of bacteria genera previously recorded in environments with high concentrations of pesticide residues. The microbiota, environmental characteristics, and pesticide residues should be further studied and try to elucidate the potential for pesticide degradation by natural consortia. Thus, extensive comparative studies are needed to clarify the microbial composition, diversity, and functioning of rice cultivation environments, and how pesticide use changes may reflect differences in microbial structure.
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Affiliation(s)
- Maria Pilar Serbent
- Santa Catarina State University - UDESC, Ibirama, Brazil.
- Environmental Engineering Graduate Program, PPGEA, Regional University of Blumenau - FURB, Blumenau, Brazil.
| | - Luiz Gustavo Dos Anjos Borges
- Institute of Petroleum and Natural Resources (IPR), Pontifical Catholic University of Rio Grande do Sul (PUCRS), Porto Alegre, RS, Brazil
| | - Aline Quadros
- Pumpkin Science Communication, Porto Alegre, RS, Brazil
| | - Letícia Marconatto
- Institute of Petroleum and Natural Resources (IPR), Pontifical Catholic University of Rio Grande do Sul (PUCRS), Porto Alegre, RS, Brazil
| | | | - Adriana Giongo
- Environmental Engineering Graduate Program, PPGEA, Regional University of Blumenau - FURB, Blumenau, Brazil
- Institute of Petroleum and Natural Resources (IPR), Pontifical Catholic University of Rio Grande do Sul (PUCRS), Porto Alegre, RS, Brazil
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13
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Bhatt P, Sethi K, Gangola S, Bhandari G, Verma A, Adnan M, Singh Y, Chaube S. Modeling and simulation of atrazine biodegradation in bacteria and its effect in other living systems. J Biomol Struct Dyn 2020; 40:3285-3295. [PMID: 33179575 DOI: 10.1080/07391102.2020.1846623] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Atrazine is the most commonly used herbicide worldwide in the agricultural system. The increased environmental concentration of the atrazine showed the toxic effects on the non-target living species. Biodegradation of the atrazine is possible with the bacterial systems. The present study investigated biodegradation potential of atrazine degrading bacteria and the impact of atrazine on environmental systems. Model of atrazine fate in ecological systems constructed using the cell designer. The used model further analyzed and simulated to know the biochemistry and physiology of the atrazine in different cellular networks. Topological analysis of the atrazine degradation confirmed the 289 nodes and 300 edges. Our results showed that the overall biomagnification of the atrazine in the different environmental systems. Atrazine is showing toxic effects on humans and plants, whereas degraded by the bacterial systems. To date, no one has analyzed the complete degradation and poisonous effects of the atrazine in the environment. Therefore, this study is useful for overall system biology based modeling and simulation analysis of atrazine in living systems.Communicated by Ramaswamy H. Sarma.
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Affiliation(s)
- 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
| | - Kanika Sethi
- Department of Microbiology, Dolphin (P.G) Institute of Biomedical and Natural Sciences, Dehradun, India
| | - Saurabh Gangola
- School of Agriculture, Graphic Era Hill University Bhimtal Campus, Uttarakhand, India
| | - Geeta Bhandari
- Department of Biotechnology, Sardar Bhagwan Singh University, Dehradun, Uttarakhand, India
| | - Amit Verma
- Department of Biochemistry, College of Basic Science and Humanities, SD Agricultural University, Gujarat, India
| | - Muhammad Adnan
- 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
| | - Yashpal Singh
- Department of Veterinary Physiology and Biochemistry, G.B Pant University of Agriculture and Technology, Pantnagar, India
| | - Shshank Chaube
- Department of Mathematics, University of Petrolium and Energy Studies, Dehradun, India
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