Effects on soil microbial community after exposure to neonicotinoid insecticides thiamethoxam and dinotefuran

Yu, Bo; Chen, Ziyu; Lu, Xiaofan; Huang, Yu‐Ting; Zhou, Ying; Zhang, Qi; Wang, Dan; Li, Jingyao

doi:10.1016/j.scitotenv.2020.138328

Cited by 64 publications

(28 citation statements)

References 40 publications

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“…Overall, soil bacteria exhibited stronger changes in community composition and a significant decline in bacterial alpha diversity in response to neonicotinoid treatment, while phyllosphere bacteria responses to neonicotinoids were weaker. Our results complement previous lab-based studies of neonicotinoid effects on bacterial communities (Cai et al, 2016;Zhang et al, 2018;Yu et al, 2020), providing some of the first field-based evidence that neonicotinoids impact bacterial diversity in agroecosystems.…”

Section: Discussionsupporting

confidence: 84%

“…Past studies have shown some negative effects of neonicotinoids on agriculturally beneficial organisms, including beneficial soil invertebrates like earthworms (Pisa et al, 2015), and insect pollinators, particularly honeybees (Iwasa et al, 2004;Samson-Robert et al, 2014Sanchez-Bayo and Goka, 2014;Bonmatin et al, 2015). Although neonicotinoids target organisms that possess a nervous system and the nAChRs, some studies have reported that they have non-target impacts on the functions and structure of microbial communities, such as fungal (Moulas et al, 2013) and bacterial structure, abundance and community composition in phyllosphere (Zhang et al, 2008(Zhang et al, , 2009Moulas et al, 2013) and soil (Cycoń et al, 2013;Yu et al, 2020). Previous biochemical or culture-based microbiological studies have also confirmed the effects of these insecticides on bacterial respiration, phosphatase activity, and other enzyme activities, including ammonification, nitrification, and denitrification (Singh and Singh, 2006;Ahemad and Khan, 2012;Cycoń and Piotrowska-Seget, 2015;Filimon et al, 2015).…”

Section: Introductionmentioning

confidence: 99%

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Neonicotinoid Seed Treatments Have Significant Non-target Effects on Phyllosphere and Soil Bacterial Communities

2021

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The phyllosphere and soil are dynamic habitats for microbial communities. Non-pathogenic microbiota, including leaf and soil beneficial bacteria, plays a crucial role in plant growth and health, as well as in soil fertility and organic matter production. In sustainable agriculture, it is important to understand the composition of these bacterial communities, their changes in response to disturbances, and their resilience to agricultural practices. Widespread pesticide application may have had non-target impacts on these beneficial microorganisms. Neonicotinoids are a family of systemic insecticides being vastly used to control soil and foliar pests in recent decades. A few studies have demonstrated the long-term and non-target effects of neonicotinoids on agroecosystem microbiota, but the generality of these findings remains unclear. In this study, we used 16S rRNA gene amplicon sequencing to characterize the effects of neonicotinoid seed treatment on soil and phyllosphere bacterial community diversity, composition and temporal dynamics in a 3-year soybean/corn rotation in Quebec, Canada. We found that habitat, host species and time are stronger drivers of variation in bacterial composition than neonicotinoid application. They, respectively, explained 37.3, 3.2, and 2.9% of the community variation. However, neonicotinoids did have an impact on bacterial community structure, especially on the taxonomic composition of soil communities (2.6%) and over time (2.4%). They also caused a decrease in soil alpha diversity in the middle of the growing season. While the neonicotinoid treatment favored some bacterial genera known as neonicotinoid biodegraders, there was a decline in the relative abundance of some potentially beneficial soil bacteria in response to the pesticide application. Some of these bacteria, such as the plant growth-promoting rhizobacteria and the bacteria involved in the nitrogen cycle, are vital for plant growth and improve soil fertility. Overall, our results indicate that neonicotinoids have non-target effects on phyllosphere and soil bacterial communities in a soybean-corn agroecosystem. Exploring the interactions among bacteria and other organisms, as well as the bacterial functional responses to the pesticide treatment, may enhance our understanding of these non-target effects and help us adapt agricultural practices to control these impacts.

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Section: Discussionsupporting

confidence: 84%

Section: Introductionmentioning

confidence: 99%

Neonicotinoid Seed Treatments Have Significant Non-target Effects on Phyllosphere and Soil Bacterial Communities

2021

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“…Hymenobacter [62], Mycobacterium [52], Pseudomonas [63], and Streptomyces [53]). In soils, there was a decline in the relative abundance of several ASVs from Proteobacteria and Gemmatimonadetes phyla and an increase in some ASVs from Chloroflexi and Actinobacteria, a result partially in accordance with a previous study that reported a decrease in the relative abundance of Gemmatimonadetes and OD1 phyla and an increase in the relative abundance of the Chloroflexi and Nitrospirae phyla in response to the neonicotinoid treatments [47].…”

Section: Discussionsupporting

confidence: 90%

“…Overall, soil bacteria exhibited stronger changes in community composition and a significant decline in bacterial alpha diversity in response to neonicotinoid treatment, while phyllosphere bacteria responses to neonicotinoids were weaker. Our results complement previous lab-based studies of neonicotinoid effects on bacterial communities [47,57,58], providing some of the first field-based evidence that neonicotinoids impact bacterial diversity in agroecosystems.…”

Section: Discussionsupporting

confidence: 84%

“…Past studies have shown some negative effects of neonicotinoids on agriculturally beneficial organisms, including beneficial soil invertebrates like earthworms [39], and insect pollinators, particularly honeybees [28,30,[40][41][42]. Although neonicotinoids target organisms that possess a nervous system and the nAChRs, some studies have reported that they have non-target impacts on the functions and structure of microbial communities, such as fungal [43] and bacterial structure, abundance and community composition in phyllosphere [43][44][45] and soil [46,47]. Previous biochemical or culture-based microbiological studies have also confirmed the effects of these insecticides on bacterial respiration, phosphatase activity, and other enzyme activities, including ammonification, nitrification, and denitrification [48][49][50][51].…”

Section: Introductionmentioning

confidence: 99%

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Effects of Neonicotinoid Seed Treatments on Phyllosphere and Soil Bacterial Communities Over Time

Parizadeh

Mimee

Kembel

2020

Preprint

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BackgroundThe phyllosphere and soil are dynamic habitats for microbial communities. Non-pathogenic microbiota, including leaf and soil beneficial bacteria, plays a crucial role in plant growth and health, as well as in soil fertility and organic matter production. In sustainable agriculture, it is important to understand the composition of these bacterial communities, their changes in response to disturbances, and their resilience to agricultural practices. Widespread pesticide application may have had non-target impacts on these beneficial microorganisms. Neonicotinoids are a family of systemic insecticides being vastly used to control soil and foliar pests in recent decades. A few studies have demonstrated the long-term and non-target effects of neonicotinoids on agroecosystem microbiota, but the generality of these findings remains unclear. In this study, we used 16S rRNA gene amplicon sequencing to characterize the effects of neonicotinoid seed treatment on soil and phyllosphere bacterial community diversity, composition and temporal dynamics in a three-year soybean/corn rotation in Quebec, Canada. Results We found that habitat, host species and time are stronger drivers of variation in bacterial composition than neonicotinoid application. They respectively explained 37.3%, 3.2% and 2.9% of the community variation. However, neonicotinoids did have an impact on bacterial community structure, especially on the taxonomic composition of soil communities (2.6%) and over time (2.4%). They also caused a decrease in soil alpha diversity in the middle of the growing season. While the neonicotinoid treatment favored some bacterial genera known as neonicotinoid biodegraders, there was a decline in the relative abundance of some potentially beneficial soil bacteria, such as the plant growth-promoting rhizobacteria and the bacteria involved in the nitrogen cycle, in response to the pesticide application.ConclusionsOur results indicate that neonicotinoids have non-target effects on phyllosphere and soil bacterial communities in a soybean-corn agroecosystem, especially potentially beneficial bacteria that are vital for plant growth and improve soil fertility. Exploring the interactions among bacteria and other organisms, as well as the bacterial functional responses to the pesticide treatment, may enhance our understanding of these non-target effects and help us adapt agricultural practices to control these impacts.

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Analytic and In Silico Methods to Understand the Interactions between Dinotefuran and Haemoglobin

Yadav,

Sewariya,

Singh

et al. 2024

Chemistry & Biodiversity

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This work lies in the growing concern over the potential impacts of pesticides on human health and the environment. Pesticides are extensively used to protect crops and control pests, but their interaction with essential biomolecules like haemoglobin remains poorly understood. Spectrofluorometric, electrochemical, and simulations investigations have been chosen as potential methods to delve into this issue, as they offer valuable insights into the molecular‐level interactions between pesticides and haemoglobin. The research aims to address the gaps in knowledge and contribute to the development of safer and more sustainable pesticide practices. The interaction was studied by spectroscopic techniques (UV‐Visible & Fluorescence), in silico studies (molecular docking & molecular dynamics simulations) and electrochemical techniques (cyclic voltammetry and tafel). The studies showed effective binding of dinotefuran with the Hb and will cause toxicity to human. The formation of a stable molecular complex between ofloxacin and hemoglobin was shown via molecular docking and the binding energy was found to ‐5.37 kcal/mol. Further, molecular dynamics simulations provide an insight for the stability of the complex (Hb‐dinotefuran) for a span of 250 ns with a binding free energy of ‐53.627 kJ/mol. Further, cyclic voltammetry and tafel studies for the interaction of dinotefuran with Hb effectively.

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Effects on soil microbial community after exposure to neonicotinoid insecticides thiamethoxam and dinotefuran

Cited by 64 publications

References 40 publications

Neonicotinoid Seed Treatments Have Significant Non-target Effects on Phyllosphere and Soil Bacterial Communities

Neonicotinoid Seed Treatments Have Significant Non-target Effects on Phyllosphere and Soil Bacterial Communities

Effects of Neonicotinoid Seed Treatments on Phyllosphere and Soil Bacterial Communities Over Time

Analytic and In Silico Methods to Understand the Interactions between Dinotefuran and Haemoglobin

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