Reduced bacterial network complexity in agricultural soils after application of the neonicotinoid insecticide thiamethoxam

Zhang, Houpu; Zhang, Zihan; Song, Jiajin; Mei, Jiajia; Fang, Hua; Gui, Wenjun

doi:10.1016/j.envpol.2021.116540

Cited by 33 publications

(15 citation statements)

References 36 publications

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“…We also found that research on the effects of neonicotinoids on soil microorganisms has produced conflicting results. Some studies did not find any adverse effects of neonicotinoids on microorganisms (Garg et al, 2021;Li et al, 2018;Parizadeh et al, 2021;Singh & Singh, 2005a;Zhang et al, 2015), while some found significant changes in the microbial community in terms of relative abundance (Garg et al, 2021;Parizadeh et al, 2021;Streletskii et al, 2022;Wu et al, 2021;Zhang et al, 2018), diversity and structure (Cai et al, 2015;Wu et al, 2021;Yamaguchi et al, 2021;Yu et al, 2020;Zhang et al, 2015;Zhang et al, 2018;Zhang et al, 2021) and enzymatic activity (Cai et al, 2016a;Castillo Diaz et al, 2017;Filimon et al, 2015;Wang et al, 2014). Such contradictory results may be because some authors investigated only eukaryotes, some only prokaryotes, and others a combination of the two groups.…”

Section: Discussionmentioning

confidence: 98%

“…Important physicochemical drivers of soil microbial productivity were poorly controlled in the selected studies. Only one study reported the relation between microbial co-occurrence pattern and soil physicochemical properties and found that edaphic variables significantly influenced the response of soil bacterial networks to neonicotinoids (Zhang et al, 2021). Soil physicochemical properties are also strongly related to soil microbial activity and diversity (Buyer et al, 2010;Fierer et al, 2012) as well as the fate and behaviour of neonicotinoids in soil (Aseperi et al, 2020).…”

Section: Discussionmentioning

confidence: 99%

“…Five studies (17%) reported that acetamiprid, imidacloprid, paichongding and thiamethoxam inhibited soil enzymatic activities (cellulase, urease, dehydrogenase, catalase, phosphatase and phosphomonoesterase) ultimately hampering biogeochemical function of soil such as ammonification, nitrification and denitrification (Cai et al, 2016a;Castillo Diaz et al, 2017;Filimon et al, 2015;Wang et al, 2014). Out of 24 studies, only one study (3%) reported that thiamethoxam application reduced soil bacterial co-occurrence patterns, which also depend on soil pH and cation exchange capacity (Zhang et al, 2021).…”

Section: Neonicotinoid Studies That Reported No Adverse Effect On The...mentioning

confidence: 99%

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Changes in soil microbial communities after exposure to neonicotinoids: A systematic review

Akter

Hulugalle

Jasonsmith

et al. 2023

Environ Microbiol Rep

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Neonicotinoids are a group of nicotine‐related chemicals widely used as insecticides in agriculture. Several studies have shown measurable quantities of neonicotinoids in the environment but little is known regarding their impact on soil microbial populations. The purpose of this systematic review was to clarify the effects of neonicotinoids on soil microbiology and to highlight any knowledge gaps. A formal systematic review was performed following PRISMA (Preferred Reporting Items for Systematic Review and Meta‐Analyses) guidelines using keywords in PubMed, SCOPUS and Web of Science. This resulted in 29 peer‐reviewed articles, whose findings diverged widely because of variable methodologies. Field‐based studies were few (28%). Imidacloprid was the most widely used (66%) and soil microbial communities were most sensitive to it. Spray formulations were used in 83% of the studies and seed treatments in the rest. Diversity indices were the most frequently reported soil microbial parameter (62%). About 45% of the studies found that neonicotinoids had adverse impacts on soil microbial community structure, composition, diversity, functioning, enzymatic activity and nitrogen transformation. Interactions with soil physicochemical properties were poorly addressed in all studies. The need for more research, particularly field‐based research on the effects of neonicotinoids on soil microorganisms was highlighted by this review.

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Section: Discussionmentioning

confidence: 98%

Section: Discussionmentioning

confidence: 99%

Section: Neonicotinoid Studies That Reported No Adverse Effect On The...mentioning

confidence: 99%

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Changes in soil microbial communities after exposure to neonicotinoids: A systematic review

Akter

Hulugalle

Jasonsmith

et al. 2023

Environ Microbiol Rep

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“…Network robustness can also be influenced by agricultural practices. It has also been demonstrated that agronomic practices, such as increased tillage, fertilizer, and pesticide use, can reduce microbial network complexity and result in the loss of keystone species and network complexity (Banerjee et al, 2019;Zhang et al, 2021). Cover crops in particular, have been linked to increased functional redundancy and complementarity with bacterial communities (Alahmad et al, 2018) which can further increase the resilience of these systems to stressors such as drought, nutrient limitation, and disease.…”

Section: Discussionmentioning

confidence: 99%

Soil bacterial community response to cover crop introduction in a wheat-based dryland cropping system

Eberly

Bourgault²,

Dafo³

et al. 2022

Front. Sustain. Food Syst.

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The incorporation of cover crops into cropping systems is important for enhancing soil health in agricultural systems. Soil microbes contribute to soil health by supplying key nutrients and providing protection against plant pests, diseases, and abiotic stress. While research has demonstrated the connection between cover crops and the soil microbiology, less is known regarding the impact of cover crops on the soil microbial community in semi-arid regions of the Northern Great Plains. Our objectives were to evaluate changes in the soil bacterial community composition and community networks in wheat grown after multi-species cover crops. Cover crops were compared to continuous cropping and crop/fallow systems and the effects of cover crop termination methods were also evaluated. Cover crops consisted of a cool season multispecies mix, mid-season multispecies mix, and a warm season multispecies mix, which were grown in rotation with winter wheat. A continuous cropping (wheat/barley) and wheat/fallow system were also included along with cover crop termination by grazing, herbicide application, and haying. Cover crop treatments and termination methods had no significant impact on microbial community alpha diversity. Cover crop termination methods also had no significant impact on microbial community beta diversity. Families belonging to the phyla Actinobacteria, Bacterioidota, and Proteobacteria were more abundant in the cool season cover crop treatment compared to the warm season cover crop treatment. Co-occurrence network analysis indicated that incorporation of cool season cover crops or mid-season mixes in a wheat-based cropping system led to greater complexity and connectivity within these microbial networks compared to the other treatments which suggests these communities may be more resilient to environmental disturbances.

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“…17 Thiamethoxam, a neonicotinoid insecticide, is one of the most popular pesticides with broad-spectrum insecticidal activity and systemic and low toxicity. 18,19 Thiamethoxam can be applied by foliar spray, 20 seed treatment 21,22 and root irrigation, 23 thus making it widely applicable for pest control in a variety of crops. Despite the marked control effectiveness of thiamethoxam, its safety for bees needs to be addressed.…”

Section: Introductionmentioning

confidence: 99%

Efficacy of drip irrigation with thiamethoxam on control of Monolepta hieroglyphica, and uptake, translocation and dietary risk of thiamethoxam in maize

Yan

Zheng

Yang

et al. 2023

Pest Management Science

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BACKGROUNDMonolepta hieroglyphica (Motschulsky) is an important agricultural pest that causes significant economic losses in terms of crop production. Conventional pesticide spraying treatments can result in pesticide drift, endanger nontarget organisms, and cause pests to fly away, resulting in unsatisfactory prevention and control effects. To study the effect of thiamethoxam on the control of maize M. hieroglyphica, a field experiment was conducted to determine the optimal thiamethoxam application dose, its spatial and temporal distribution dynamics and its dietary risk based on its control effect when applied by spray and drip irrigation.RESULTSThe results of the field trials showed that compared with spray irrigation, drip irrigation resulted in greater control starting from the 5th day. This result was due to the hysteresis effect of thiamethoxam being first absorbed by the roots and then continuously transferred upward, where it accumulates. After 30 days of drip irrigation with 75 and 150 g a.i. ha‐1 thiamethoxam, the control effect on M. hieroglyphica was 32.41‐49.44% and 69.77‐80.57%, respectively. The results of the dietary risk assessment showed that the risk of thiamethoxam ingestion through maize kernels was acceptable regarding its effect on human health.CONCLUSIONSDrip irrigation with thiamethoxam can improve the effective utilization rate of pesticides, achieve precise control of maize M. hieroglyphica, and provide a new method for sustainable agricultural production.This article is protected by copyright. All rights reserved.

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Reduced bacterial network complexity in agricultural soils after application of the neonicotinoid insecticide thiamethoxam

Cited by 33 publications

References 36 publications

Changes in soil microbial communities after exposure to neonicotinoids: A systematic review

Changes in soil microbial communities after exposure to neonicotinoids: A systematic review

Soil bacterial community response to cover crop introduction in a wheat-based dryland cropping system

Efficacy of drip irrigation with thiamethoxam on control of Monolepta hieroglyphica, and uptake, translocation and dietary risk of thiamethoxam in maize

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