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Ernst G, Amorim MJB, Bottoms M, Brooks AC, Hodson ME, Kimmel S, Kotschik P, Marx MT, Natal-da-Luz T, Pelosi C, Pieper S, Schimera A, Scott-Fordsmand J, Sharples A, Sousa JP, van Gestel CAM, van Hall B, Bergtold M. Intermediate-tier options in the environmental risk assessment of plant protection products for soil invertebrates-Synthesis of a workshop. INTEGRATED ENVIRONMENTAL ASSESSMENT AND MANAGEMENT 2024; 20:780-793. [PMID: 37563990 DOI: 10.1002/ieam.4825] [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: 03/03/2023] [Revised: 07/10/2023] [Accepted: 07/28/2023] [Indexed: 08/12/2023]
Abstract
The European environmental risk assessment (ERA) of plant protection products follows a tiered approach. The approach for soil invertebrates currently consists of two steps, starting with a Tier 1 assessment based on reproduction toxicity tests with earthworms, springtails, and predatory mites. In case an unacceptable risk is identified at Tier 1, field studies can be conducted as a higher-tier option. For soil invertebrates, intermediate tiers are not implemented. Hence, there is limited possibility to include additional information for the ERA to address specific concerns when the Tier 1 fails, as an alternative to, for example, a field study. Calibrated intermediate-tier approaches could help to address risks for soil invertebrates with less time and resources but also with sufficient certainty. A multistakeholder workshop was held on 2-4 March 2022 to discuss potential intermediate-tier options, focusing on four possible areas: (1) natural soil testing, (2) single-species tests (other than standard species), (3) assessing recovery in laboratory tests, and (4) the use of assembled soil multispecies test systems. The participants acknowledged a large potential in the intermediate-tier options but concluded that some issues need to be clarified before routine application of these approaches in the ERA is possible, that is, sensitivity, reproducibility, reliability, and standardization of potential new test systems. The definition of suitable assessment factors needed to calibrate the approaches to the protection goals was acknowledged. The aims of the workshop were to foster scientific exchange and a data-driven dialog, to discuss how the different approaches could be used in the risk assessment, and to identify research priorities for future work to address uncertainties and strengthen the tiered approach in the ERA for soil invertebrates. This article outlines the background, proposed methods, technical challenges, difficulties and opportunities in the ERA, and conclusions of the workshop. Integr Environ Assess Manag 2024;20:780-793. © 2023 The Authors. Integrated Environmental Assessment and Management published by Wiley Periodicals LLC on behalf of Society of Environmental Toxicology & Chemistry (SETAC).
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Affiliation(s)
- Gregor Ernst
- Bayer AG, CropScience Division, Monheim, Germany
| | - Mónica J B Amorim
- Department of Biology and CESAM, University of Aveiro, Aveiro, Portugal
| | - Melanie Bottoms
- Syngenta Ltd., Jealott's Hill International Research Centre, Bracknell, UK
| | - Amy C Brooks
- Cambridge Environmental Assessments, Cambridge, UK
| | - Mark E Hodson
- Department of Environment and Geography, University of York, York, UK
| | | | - Pia Kotschik
- German Environment Agency (UBA), Dessau-Roßlau, Germany
| | | | - Tiago Natal-da-Luz
- Associate Laboratory TERRA, Department of Life Sciences, CFE-Centre for Functional Ecology - Science for the People and the Planet, University of Coimbra, Coimbra, Portugal
| | - Céline Pelosi
- INRAE, Avignon Université, UMR EMMAH, Avignon, France
| | - Silvia Pieper
- German Environment Agency (UBA), Dessau-Roßlau, Germany
| | | | | | | | - José P Sousa
- Associate Laboratory TERRA, Department of Life Sciences, CFE-Centre for Functional Ecology - Science for the People and the Planet, University of Coimbra, Coimbra, Portugal
| | - Cornelis A M van Gestel
- Faculty of Science, Amsterdam Institute for Life and Environment (A-LIFE), Vrije Universiteit Amsterdam, Amsterdam, The Netherlands
| | - Bart van Hall
- Faculty of Science, Amsterdam Institute for Life and Environment (A-LIFE), Vrije Universiteit Amsterdam, Amsterdam, The Netherlands
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Xu L, Zhao J, Xu D, Xu G, Peng Y, Zhang Y. New insights into chlorantraniliprole metabolic resistance mechanisms mediated by the striped rice borer cytochrome P450 monooxygenases: A case study of metabolic differences. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 912:169229. [PMID: 38072259 DOI: 10.1016/j.scitotenv.2023.169229] [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: 10/08/2023] [Revised: 11/30/2023] [Accepted: 12/07/2023] [Indexed: 01/18/2024]
Abstract
The anthranilic diamide insecticide chlorantraniliprole has been extensively applied to control Lepidoptera pests. However, its overuse leads to the development of resistance and accumulation of residue in the environment. Four P450s (CYP6CV5, CYP9A68, CYP321F3, and CYP324A12) were first found to be constitutively overexpressed in an SSB CAP-resistant strain. It is imperative to further elucidate the molecular mechanisms underlying P450s-mediated CAP resistance for mitigating its environmental contamination. Here, we heterologously expressed these four P450s in insect cells and evaluated their abilities to metabolize CAP. Western blotting and reduced CO difference spectrum tests showed that these four P450 proteins had been successfully expressed in Sf9 cells, which are indicative of active functional enzymes. The recombinant proteins CYP6CV5, CYP9A68, CYP321F3, and CYP324A12 exhibited a preference for metabolizing the fluorescent P450 model probe substrates EC, BFC, EFC, and EC with enzyme activities of 0.54, 0.67, 0.57, and 0.46 pmol/min/pmol P450, respectively. In vitro metabolism revealed distinct CAP metabolic rates (0.97, 0.86, 0.75, and 0.55 pmol/min/pmol P450) and efficiencies (0.45, 0.37, 0.30, and 0.17) of the four recombinant P450 enzymes, thereby elucidating different protein catalytic activities. Furthermore, molecular model docking confirmed metabolic differences and efficiencies of these P450s and unveiled the hydroxylation reaction in generating N-demethylation and methylphenyl hydroxylation during CAP metabolism. Our findings not only first provide new insights into the mechanisms of P450s-mediated metabolic resistance to CAP at the protein level in SSB but also demonstrate significant differences in the capacities of multiple P450s for insecticide degradation and facilitate the evaluation and mitigation of toxic risks associated with CAP application in the environment.
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Affiliation(s)
- Lu Xu
- Key Lab of Food Quality and Safety of Jiangsu Province-State Key Laboratory Breeding Base, Institute of Plant Protection, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, China.
| | - Jun Zhao
- Key Laboratory of Green Preservation and Control of Tobacco Diseases and Pests in the Huanghuai Growing Area, Institute of Tobacco Research, Henan Academy of Agricultural Sciences, Xuchang 461000, China
| | - Dejin Xu
- Key Lab of Food Quality and Safety of Jiangsu Province-State Key Laboratory Breeding Base, Institute of Plant Protection, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, China
| | - Guangchun Xu
- Key Lab of Food Quality and Safety of Jiangsu Province-State Key Laboratory Breeding Base, Institute of Plant Protection, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, China
| | - Yingchuan Peng
- Institute of Entomology, Jiangxi Agricultural University, Nanchang 330045, China.
| | - Yanan Zhang
- Anhui Engineering Research Center for Green Production Technology of Drought Grain Crops, College of Life Sciences, Huaibei Normal University, Huaibei 235000, China
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Silva ASJ, Kristiansen SM, Sengupta S, van Gestel CAM, Leinaas HP, Borgå K. Using dietary exposure to determine sub-lethal effects from imidacloprid in two springtail (Collembola) species. ECOTOXICOLOGY (LONDON, ENGLAND) 2023; 32:1209-1220. [PMID: 37989986 PMCID: PMC10724306 DOI: 10.1007/s10646-023-02715-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 11/07/2023] [Indexed: 11/23/2023]
Abstract
Standard toxicity tests expose springtails (Collembola) through soil, while dietary exposure tests with animals visible on a surface are less commonly applied. We refined a method for dietary chemical exposure for two widely distributed and abundant Collembola species: Folsomia quadrioculata and Hypogastrura viatica as existing methods were sub-optimal. Newly hatched Collembola were offered bark with a natural layer of Cyanobacteria that was either moistened with a solution of the neonicotinoid insecticide imidacloprid using a micropipette or soaked in the solution overnight. The first method was superior in producing a measured concentration close to the nominal (0.21 and 0.13 mg/kg dry bark, respectively), and resulting in sub-lethal effects as expected. The adult body size was reduced by 8% for both species, but egg production only in H. viatica. Contrastingly, soaked bark resulted in a measured concentration of 8 mg/kg dry bark, causing high mortality and no egg production in either species. Next, we identified the sub-lethal concentration-range by moistening the bark to expose H. viatica to 0, 0.01, 0.04, 0.13, 0.43 and 1.2 mg imidacloprid/kg dry bark. Only the highest concentration affected survival, causing a mortality of 77%. Imidacloprid reduced moulting rate and the body size at first reproduction. The age at first reproduction appeared delayed as some replicates did not reproduce within the experiment duration. The method of moistened bark for dietary exposure proved optimal to continuously study life history traits, such as growth and reproductive outcomes, which are important to understand effects on key events crucial for population viability and growth.
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Affiliation(s)
- Andreia Sofia Jorge Silva
- Section for Aquatic Biology and Toxicology, Department of Biosciences, University of Oslo, Oslo, Norway
- Department of Animal Biology, Faculty of Sciences, University of Lisbon, Lisbon, Portugal
| | - Silje Marie Kristiansen
- Section for Aquatic Biology and Toxicology, Department of Biosciences, University of Oslo, Oslo, Norway
| | - Sagnik Sengupta
- Section for Aquatic Biology and Toxicology, Department of Biosciences, University of Oslo, Oslo, Norway
| | - Cornelis A M van Gestel
- Amsterdam Institute for Life and Environment (A-LIFE), Faculty of Science, Vrije Universiteit, Amsterdam, The Netherlands
| | - Hans Petter Leinaas
- Section for Aquatic Biology and Toxicology, Department of Biosciences, University of Oslo, Oslo, Norway
| | - Katrine Borgå
- Section for Aquatic Biology and Toxicology, Department of Biosciences, University of Oslo, Oslo, Norway.
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Bandeira FO, Tina JK, Alves PRL, Vaz VP, Puerari RC, Juneau P, Dewez D, Matias WG. Locomotion behavior testing as a complementary tool in Collembola avoidance assays with neurotoxic insecticides. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:124374-124381. [PMID: 37945963 DOI: 10.1007/s11356-023-30750-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/26/2023] [Accepted: 10/25/2023] [Indexed: 11/12/2023]
Abstract
This study aimed (1) to assess the ability of collembolans Folsomia candida to avoid soils contaminated with three seed dressing insecticides imidacloprid, clothianidin, and fipronil; (2) to assess the effects of the insecticides on collembolans' locomotion behavior; (3) to check if changes in the locomotion behavior would explain the avoidance/preference responses; and (4) to evaluate the possibility to use locomotion behavior as toxicity biomarker of the tested insecticides. Avoidance and locomotion behavior assays with collembolans F. candida were performed with commercial seed dressing formulations of three insecticides (imidacloprid, clothianidin, and fipronil). Results showed no avoidance behavior at any concentration, while a "preference" was observed with increasing concentrations of the three tested insecticides. Significant reductions in the locomotion of exposed collembolans were observed at ≥ 1 mg kg-1 for imidacloprid (18-38%) and fipronil (29-58%) and ≥ 4 mg kg-1 for clothianidin (10-47%). At the higher insecticide concentrations, the collembolans had their trajectories restricted to smaller areas, with a tendency for circular movements. Our results confirm that the "preference" for contaminated soils with neurotoxic substances is likely due to locomotion inhibition impairing the ability of organisms to escape. This effect highlights that only avoidance assays may be not sufficient to assure the safety of some substances and confirm the potential of locomotion behavior as a sensitive toxicity biomarker for neurotoxic insecticides.
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Affiliation(s)
- Felipe Ogliari Bandeira
- Laboratory of Environmental Toxicology, Department of Sanitary and Environmental Engineering, Federal University of Santa Catarina, Florianópolis, SC, 88040-970, Brazil
| | - Jéssica Karolayne Tina
- Laboratory of Soil Ecotoxicology, Federal University of Fronteira Sul, Av. Fernando Machado 108 E, Chapecó, SC, 89802112, Brazil
| | - Paulo Roger Lopes Alves
- Laboratory of Soil Ecotoxicology, Federal University of Fronteira Sul, Av. Fernando Machado 108 E, Chapecó, SC, 89802112, Brazil.
| | - Vitor Pereira Vaz
- Laboratory of Environmental Toxicology, Department of Sanitary and Environmental Engineering, Federal University of Santa Catarina, Florianópolis, SC, 88040-970, Brazil
- Ecotoxicology of Aquatic Microorganisms Laboratory-GRIL-EcotoQ-TOXEN, Department of Biological Sciences, University of Quebec at Montreal, Succ. Centre-Ville, Montréal, QC, H3C 3P8, Canada
| | - Rodrigo Costa Puerari
- Laboratory of Environmental Toxicology, Department of Sanitary and Environmental Engineering, Federal University of Santa Catarina, Florianópolis, SC, 88040-970, Brazil
| | - Philippe Juneau
- Ecotoxicology of Aquatic Microorganisms Laboratory-GRIL-EcotoQ-TOXEN, Department of Biological Sciences, University of Quebec at Montreal, Succ. Centre-Ville, Montréal, QC, H3C 3P8, Canada
| | - David Dewez
- Laboratory of Environmental & Analytical Biochemistry of Contaminants, Department of Chemistry, University of Quebec at Montreal, CP 8888, Succ. Centre-Ville, Montréal, QC, H3C 3P8, Canada
| | - William Gerson Matias
- Laboratory of Environmental Toxicology, Department of Sanitary and Environmental Engineering, Federal University of Santa Catarina, Florianópolis, SC, 88040-970, Brazil
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Gabriel A, Venâncio C, Sousa JP, Leston S, Ramos F, Soares AMVM, Lopes I. Soil pH matters in the ecotoxicity of Basamid® to freshwater microalgae and macrophytes. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 859:160165. [PMID: 36379344 DOI: 10.1016/j.scitotenv.2022.160165] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/31/2022] [Revised: 09/12/2022] [Accepted: 11/09/2022] [Indexed: 06/16/2023]
Abstract
Intensive agriculture along with the use of agrochemicals has been associated with low soil fertility, soil erosion, and soil acidity. Management of soil pH through liming is a common practice in agriculture to increase soil fertility and nutrient availability. When altering soil pH, different chemical reactions occur depending on soil composition and agrochemicals presence. Basamid® is a fumigant used worldwide targeting soil nematodes, fungi, and weeds in diverse crops, that can reach freshwater ecosystems by leaching through the soil layers. The major goal of this work was to assess the influence of soil pH in the toxicity of Basamid® eluates to the microalgae Raphidocelis subcapitata and the duckweed Lemna minor. For this, eluates were prepared from soils with different pH (5.5, 6.5 and 7.5), contaminated with the recommended dose of Basamid® corresponding to 145.7 mg of dazomet/Kg soil. Soil was amended with calcium carbonate (CaCO3). Raphidocelis subcapitata and L. minor were exposed to the eluates during 72 h and 7 days respectively, and multiple endpoints were assessed: growth rate, biomass, pigment as chlorophyl content and cell damage. Results showed that soil pH can influence the performance of the tested species and also be a major factor in influencing Basamid®'s toxicity. However, a clear pattern of the influence of soil pH on Basamid®'s toxicity was not observed and was species dependent. For R. subcapitata lower soil pHs induced higher toxicity of Basamid®'s to the algae [ED50 for growth rate: 30 % (confidence limits-CL: 22.8-37.2) for soil pH 5.5; >100 % for soil pH 6.5 and pH 7.5], while for L. minor the opposite was observed [ED50 for number of fronds: 27.2 % (CL: 22.8-31.6) for pH 5.5; 20.3 % (CL: 10.0-30.6) for pH 6.5 and 10.7 % (CL: 6.3-15.1)]. Overall, these results showed that leachates of Basamid® through soils, at recommended doses, can have a severe impact on aquatic systems, with or without the influence of abiotic factors.
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Affiliation(s)
- Antonieta Gabriel
- CESAM & Department of Biology, University of Aveiro, 3810-193 Aveiro, Portugal
| | - Cátia Venâncio
- CESAM & Department of Biology, University of Aveiro, 3810-193 Aveiro, Portugal
| | - José Paulo Sousa
- CFE - Centre for Functional Ecology, Associate Laboratory TERRA, Department of Life Sciences, University of Coimbra, Calçada Martim de Freitas, 3000-456 Coimbra, Portugal
| | - Sara Leston
- CFE - Centre for Functional Ecology, Associate Laboratory TERRA, Department of Life Sciences, University of Coimbra, Calçada Martim de Freitas, 3000-456 Coimbra, Portugal; REQUIMTE/LAQV - R. D. Manuel II, Apartado, 55142 Porto, Portugal
| | - Fernando Ramos
- REQUIMTE/LAQV - R. D. Manuel II, Apartado, 55142 Porto, Portugal
| | - Amadeu M V M Soares
- CESAM & Department of Biology, University of Aveiro, 3810-193 Aveiro, Portugal
| | - Isabel Lopes
- CESAM & Department of Biology, University of Aveiro, 3810-193 Aveiro, Portugal.
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Luan YX, Cui Y, Chen WJ, Jin JF, Liu AM, Huang CW, Potapov M, Bu Y, Zhan S, Zhang F, Li S. High-quality genomes reveal significant genetic divergence and cryptic speciation in the model organism Folsomia candida (Collembola). Mol Ecol Resour 2022; 23:273-293. [PMID: 35962787 PMCID: PMC10087712 DOI: 10.1111/1755-0998.13699] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2021] [Revised: 08/08/2022] [Accepted: 08/09/2022] [Indexed: 12/01/2022]
Abstract
The collembolan Folsomia candida Willem, 1902, is widely distributed throughout the world and has been frequently used as a test organism in soil ecology and ecotoxicology studies. However, it is questioned as an ideal "standard" because of differences in reproductive modes and cryptic genetic diversity between strains from various geographical origins. In this study, we obtained two high-quality chromosome-level genomes of F. candida, for a parthenogenetic strain (named as FCDK, 219.08 Mb, 25,139 protein-coding genes) and a sexual strain (named as FCSH, 153.09 Mb, 21,609 protein-coding genes), reannotated the genome of the parthenogenetic strain reported by Faddeeva-Vakhrusheva et al. in 2017 (named as FCBL, 221.7 Mb, 25,980 protein-coding genes), and conducted comparative genomic analyses of three strains. High genome similarities between FCDK and FCBL on synteny, genome architecture, mitochondrial and nuclear gene sequences support they are conspecific. The seven chromosomes of FCDK are each 25-54% larger than the corresponding chromosomes of FCSH, showing obvious repetitive element expansions and large-scale inversions and translocations but no whole-genome duplication. The strain-specific genes, expanded gene families and genes in nonsyntenic chromosomal regions identified in FCDK are highly related to the broader environmental adaptation of parthenogenetic strains. In addition, FCDK has fewer strain-specific microRNAs than FCSH, and their mitochondrial and nuclear genes have diverged greatly. In conclusion, FCDK/FCBL and FCSH have accumulated independent genetic changes and evolved into distinct species since 10 Mya. Our work provides important genomic resources for studying the mechanisms of rapidly cryptic speciation and soil arthropod adaptation to soil ecosystems.
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Affiliation(s)
- Yun-Xia Luan
- Guangdong Provincial Key Laboratory of Insect Development Biology and Applied Technology, Institute of Insect Science and Technology, School of Life Sciences, South China Normal University, Guangzhou, China.,Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou, China
| | - Yingying Cui
- Guangdong Provincial Key Laboratory of Insect Development Biology and Applied Technology, Institute of Insect Science and Technology, School of Life Sciences, South China Normal University, Guangzhou, China
| | | | - Jian-Feng Jin
- Department of Entomology, College of Plant Protection, Nanjing Agricultural University, Nanjing, China
| | - Ai-Min Liu
- Department of Pomology, College of Horticulture, South China Agricultural University, Guangzhou, China
| | - Cheng-Wang Huang
- CAS Key Laboratory of Insect Developmental and Evolutionary Biology, CAS Center for Excellence in Molecular Plant Sciences, Chinese Academy of Sciences, Shanghai, China
| | | | - Yun Bu
- Natural History Research Center, Shanghai Natural History Museum, Shanghai Science & Technology Museum, Shanghai, China
| | - Shuai Zhan
- CAS Key Laboratory of Insect Developmental and Evolutionary Biology, CAS Center for Excellence in Molecular Plant Sciences, Chinese Academy of Sciences, Shanghai, China
| | - Feng Zhang
- Department of Entomology, College of Plant Protection, Nanjing Agricultural University, Nanjing, China
| | - Sheng Li
- Guangdong Provincial Key Laboratory of Insect Development Biology and Applied Technology, Institute of Insect Science and Technology, School of Life Sciences, South China Normal University, Guangzhou, China.,Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou, China.,Guangmeiyuan R&D Center, Guangdong Provincial Key Laboratory of Insect Developmental Biology and Applied Technology, South China Normal University, Meizhou, China
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