The stereoselectivity of metconazole on wheat grain filling and harvested seeds germination: Implication for the application of triazole chiral pesticides

Deng, Yelin; Liu, Rui; Wang, Zikang; Zhang, Luyao; Yu, Simin; Zhou, Zhiqiang; Diao, Jinling

doi:10.1016/j.jhazmat.2021.125911

Cited by 16 publications

(4 citation statements)

References 34 publications

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“…The application of pesticides can considerably reduce the loss of wheat. Therefore, the use of pesticides is crucial to the development of modern agricultural development . Triazole fungicides have been used worldwide to control fungal diseases in crops due to their wide therapeutic window, broad-spectrum activity, and low toxicity .…”

Section: Introductionmentioning

confidence: 99%

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Risk Assessment of the Chiral Fungicide Triticonazole: Enantioselective Effects, Toxicity, and Fate

Liu

Deng

Zhang

et al. 2022

J. Agric. Food Chem.

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The enantioselective toxicity of triticonazole (TRZ) to non-target organisms, the effect on wheat growth and quality, and the environmental fate of TRZ were investigated systematically in this study. The acute toxicity of S-TRZ to non-target aquatic and terrestrial organisms was greater than that of rac-TRZ and R-TRZ. The S-enantiomer significantly inhibited the growth and lodging resistance of wheat. S-and R-TRZ not only reduced the grain yield but also inhibited the activities of ADP-glucose pyrophosphorylase (AGPase) and starch synthase. The results of homology modeling and molecular docking further showed that the inhibition of AGPase activity by the two enantiomers hindered the accumulation of starch. By contrast, the racemate promoted the growth and development of wheat and improved grain quality. And the half-lives of the racemate in stems, grains, leaves, and soils were shorter than those of the enantiomers. The results of risk quotient (RQ) values showed that the application of TRZ enantiomers during wheat planting would bring a higher potential dietary risk to Chinese consumers. In comprehensive consideration of these results, the application of the racemate may be safer and more reasonable at the flowering stage of wheat.

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Section: Introductionmentioning

confidence: 99%

“…Therefore, the use of pesticides is crucial to the development of modern agricultural development. 5 Triazole fungicides have been used worldwide to control fungal diseases in crops due to their wide therapeutic window, broad-spectrum activity, and low toxicity. 6 Approximately 84% of triazole fungicides are chiral pesticides.…”

Section: Introductionmentioning

confidence: 99%

Risk Assessment of the Chiral Fungicide Triticonazole: Enantioselective Effects, Toxicity, and Fate

Liu

Deng

Zhang

et al. 2022

J. Agric. Food Chem.

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“…Ten wheat spikes were randomly collected from each plot at 7, 14, 21, 28, and 35 days after flowering. They were placed in the oven at 105°C for 30 min and dried to constant weight at 75°C for 72 h. The filling rate was calculated as grain weight/filling duration ( Deng et al., 2021 ). For wheat maturity, each plot randomly selected 1 m 2 to investigate the number of spikes per unit area, selected 100 spikes to investigate the number of grains per spike, harvested 4 m 2 threshing, and weighed after natural air drying (grain moisture content is approximately 12.5%), calculated yield per unit area, and investigated 1000-grain weight.…”

Section: Methodsmentioning

confidence: 99%

Biocontrol and plant growth promotion by combined Bacillus spp. inoculation affecting pathogen and AMF communities in the wheat rhizosphere at low salt stress conditions

Chen²,

Kong³

et al. 2022

Front. Plant Sci.

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Applying plant growth-promoting rhizobacteria (PGPR) improves the efficiency of soil-borne disease control and is considered a sustainable practice. However, the effect of PGPR on the fungal community, especially pathogenic fungi and arbuscular mycorrhizal fungi (AMF), remains unclear. In this study, we examined the effects of a compound microbial agent (consisting of Bacillus subtilis HG-15 and Bacillus velezensis JC-K3) on the incidence and yield of wheat under low salt stress, as well as compared the diversity and community composition of the rhizosphere fungal and AMF communities of wheat in the CK (not inoculated bacterial agent) and BIO (inoculated with a bacterial agent) groups. Chlorophyll relative content (SPAD), net photosynthesis rate (Pn), transpiration rate (Tr), leaf water use efficiency (WUEL), grains per spike and wheat yield in the BIO group increased more than in the CK group. The number of diseased plants and disease incidence was observed to be reduced. The relative efficacy reached 79.80%. We classified 1007 fungal operational taxonomic units (OTU) based on Miseq sequencing data: 11 phyla, 173 families, 319 genera, and 521 species. Fifty-four OTUs were classified from the AMF effective sequences, including 1 phylum, 3 families, 3 genera, and 17 species. The inoculation of bacterial agents reduced the relative abundance of pathogen genera such as Gibberella, Fusarium, Cladosporium, and Alternaria in wheat rhizosphere. It increased the relative abundance of AMF species such as Glomus-group-B-Glomus-lamellosu-VTX00193, Glomus-viscosum-VTX00063, and Glomus-Glo2-VTX00280. In addition, pH, EC, exchangeable K, available N, total N, organic matter, and olsen P were the main driving forces for shaping wheat rhizosphere fungi. The pH value was positively correlated with the relative abundance of fungal communities in soil, especially Gibberella, Cladosporium, Fusarium, and Alternaria. In summary, inoculation with Bacillus subtilis HG-15 and Bacillus velezensis JC-K3 affected wheat yield, incidence, rhizosphere soil chemical properties, rhizosphere fungi, and AMF fungal diversity and community. The findings may provide a theoretical foundation and strain support for constructing efficient PGPR-community and clarifying its mechanism of pathogenic bacteria inhibition.

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“…When organisms were subjected to various biotic and abiotic stresses, a large amount of reactive oxygen species (ROS) will accumulate in cells, 11 which destroyed the molecular structure of cytomembrane and interfered with normal physiological processes and caused lipid peroxidation, 12 such as superoxide anion (O 2 − ) and hydrogen peroxide (H 2 O 2 ). For example, Li et al tested the toxicity of acetofenate ester enantiomers on rat PC12 cells, and the results illustrated that S ‐(+)‐acetofenate ester induced ROS excessive accumulation in cells; moreover, the activity of superoxide dismutase (SOD) and catalase (CAT) was inhibited, which hindered the removal of ROS, resulting in more consumingly oxidative damage and cytotoxicity than R ‐(−)‐acetofenate 13 .…”

Section: Introductionmentioning

confidence: 99%

Stereoselectivity of paclobutrazol enantiomers to oxidative stress in wheat

Yang,

Li,

Liang

et al. 2024

Chirality

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Chiral pesticides have the special chiral structures, so enantioselective biological effects are usually observed in living organisms. Current study used paclobutrazol as a case study and explored the enantioselective degradation and oxidative stress effect on wheat. The results demonstrated that the degradation of R‐paclobutrazol was faster than S‐paclobutrazol significantly and improved the content of MDA and O2− in wheat plants, which proved that the R‐paclobutrazol induced oxidative damage in wheat, showing selective biological effects, and S‐paclobutrazol was friendly to wheat. This study provided a theoretical basis for the selective activity of chiral pesticides and the development of chiral pesticide monomers.

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The stereoselectivity of metconazole on wheat grain filling and harvested seeds germination: Implication for the application of triazole chiral pesticides

Cited by 16 publications

References 34 publications

Risk Assessment of the Chiral Fungicide Triticonazole: Enantioselective Effects, Toxicity, and Fate

Risk Assessment of the Chiral Fungicide Triticonazole: Enantioselective Effects, Toxicity, and Fate

Biocontrol and plant growth promotion by combined Bacillus spp. inoculation affecting pathogen and AMF communities in the wheat rhizosphere at low salt stress conditions

Stereoselectivity of paclobutrazol enantiomers to oxidative stress in wheat

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