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Co-exposure of dimethomorph and imidacloprid: effects on soil bacterial communities in vineyard soil

In Taiwan, the pesticides dimethomorph and imidacloprid are recommended for pest control in vineyards. Therefore, tank-mixing of these two pesticides is usually a routine practice before application. This study analyzed the influence of vineyard soil microbial flora under the recommended and high do...

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Autores principales: Chang, Jean, Shen, Fo-Ting, Lai, Wei-An, Liao, Chien-Sen, Chen, Wen-Ching
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Frontiers Media S.A. 2023
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10653314/
https://www.ncbi.nlm.nih.gov/pubmed/38029114
http://dx.doi.org/10.3389/fmicb.2023.1249167
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author Chang, Jean
Shen, Fo-Ting
Lai, Wei-An
Liao, Chien-Sen
Chen, Wen-Ching
author_facet Chang, Jean
Shen, Fo-Ting
Lai, Wei-An
Liao, Chien-Sen
Chen, Wen-Ching
author_sort Chang, Jean
collection PubMed
description In Taiwan, the pesticides dimethomorph and imidacloprid are recommended for pest control in vineyards. Therefore, tank-mixing of these two pesticides is usually a routine practice before application. This study analyzed the influence of vineyard soil microbial flora under the recommended and high dosages (100 times the recommended dosage) of dimethomorph and imidacloprid. Individual and combined applications of pesticides were also tested through batches of soil incubation experiments. Four treatments—control (C), dimethomorph (DT), imidacloprid (IM), and mixed application of dimethomorph and imidacloprid (ID)—were used in the experimental design. From the soil metabolism, no significant reaction was observed after 2 months in the recommended dosage group, regardless of whether the pesticides were being applied individually or combined. For the high dosage, imidacloprid showed a higher effect than the co-exposure treatments, showing a possible prolonged effect after its repetitive application. From PCoA analysis, pesticide treatments altered the soil ecology after 2 months, and the effect of imidacloprid can be explicitly observed at high dosages. At the phylum level, Acidobacteria can indicate pesticide application around the recommended dosage. It was inhibited by ID on day 7 and was augmented by all pesticides on day 63. The effect of the recommended dosage of pesticide mixtures after 2 months of incubation was revealed in the minor families Gemmataceae and Pirellulaceae, while the high dosage treatments affected both the core and the minor families. Our findings verified the changes in the composition of microbial communities upon pesticide application, which would affect carbon, nitrogen, sulfur, phosphorous cycles, and contaminant removal ability within the vineyard.
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spelling pubmed-106533142023-11-02 Co-exposure of dimethomorph and imidacloprid: effects on soil bacterial communities in vineyard soil Chang, Jean Shen, Fo-Ting Lai, Wei-An Liao, Chien-Sen Chen, Wen-Ching Front Microbiol Microbiology In Taiwan, the pesticides dimethomorph and imidacloprid are recommended for pest control in vineyards. Therefore, tank-mixing of these two pesticides is usually a routine practice before application. This study analyzed the influence of vineyard soil microbial flora under the recommended and high dosages (100 times the recommended dosage) of dimethomorph and imidacloprid. Individual and combined applications of pesticides were also tested through batches of soil incubation experiments. Four treatments—control (C), dimethomorph (DT), imidacloprid (IM), and mixed application of dimethomorph and imidacloprid (ID)—were used in the experimental design. From the soil metabolism, no significant reaction was observed after 2 months in the recommended dosage group, regardless of whether the pesticides were being applied individually or combined. For the high dosage, imidacloprid showed a higher effect than the co-exposure treatments, showing a possible prolonged effect after its repetitive application. From PCoA analysis, pesticide treatments altered the soil ecology after 2 months, and the effect of imidacloprid can be explicitly observed at high dosages. At the phylum level, Acidobacteria can indicate pesticide application around the recommended dosage. It was inhibited by ID on day 7 and was augmented by all pesticides on day 63. The effect of the recommended dosage of pesticide mixtures after 2 months of incubation was revealed in the minor families Gemmataceae and Pirellulaceae, while the high dosage treatments affected both the core and the minor families. Our findings verified the changes in the composition of microbial communities upon pesticide application, which would affect carbon, nitrogen, sulfur, phosphorous cycles, and contaminant removal ability within the vineyard. Frontiers Media S.A. 2023-11-02 /pmc/articles/PMC10653314/ /pubmed/38029114 http://dx.doi.org/10.3389/fmicb.2023.1249167 Text en Copyright © 2023 Chang, Shen, Lai, Liao and Chen. https://creativecommons.org/licenses/by/4.0/This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.
spellingShingle Microbiology
Chang, Jean
Shen, Fo-Ting
Lai, Wei-An
Liao, Chien-Sen
Chen, Wen-Ching
Co-exposure of dimethomorph and imidacloprid: effects on soil bacterial communities in vineyard soil
title Co-exposure of dimethomorph and imidacloprid: effects on soil bacterial communities in vineyard soil
title_full Co-exposure of dimethomorph and imidacloprid: effects on soil bacterial communities in vineyard soil
title_fullStr Co-exposure of dimethomorph and imidacloprid: effects on soil bacterial communities in vineyard soil
title_full_unstemmed Co-exposure of dimethomorph and imidacloprid: effects on soil bacterial communities in vineyard soil
title_short Co-exposure of dimethomorph and imidacloprid: effects on soil bacterial communities in vineyard soil
title_sort co-exposure of dimethomorph and imidacloprid: effects on soil bacterial communities in vineyard soil
topic Microbiology
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10653314/
https://www.ncbi.nlm.nih.gov/pubmed/38029114
http://dx.doi.org/10.3389/fmicb.2023.1249167
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