Effects of Three Pesticides on the Earthworm Lumbricus terrestris Gut Microbiota
Earthworms play a vital role in the terrestrial ecosystem functioning and maintenance of soil fertility. However, many pesticides, for example, imidacloprid, benomyl, and metribuzin that are world-widely used in agriculture, may be potentially dangerous to earthworms. At the same time, standard test...
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| Format: | Article |
| Language: | English |
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Frontiers Media S.A.
2022-03-01
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| Series: | Frontiers in Microbiology |
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| Online Access: | https://www.frontiersin.org/articles/10.3389/fmicb.2022.853535/full |
| _version_ | 1828876522997415936 |
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| author | Angelika Astaykina Rostislav Streletskii Mikhail Maslov George Krasnov Victor Gorbatov |
| author_facet | Angelika Astaykina Rostislav Streletskii Mikhail Maslov George Krasnov Victor Gorbatov |
| author_sort | Angelika Astaykina |
| collection | DOAJ |
| description | Earthworms play a vital role in the terrestrial ecosystem functioning and maintenance of soil fertility. However, many pesticides, for example, imidacloprid, benomyl, and metribuzin that are world-widely used in agriculture, may be potentially dangerous to earthworms. At the same time, standard tests for pesticides acute and chronic toxicity do not reflect all aspects of their negative impact and might not be enough sensitive for effective assessment. In this paper, we studied the effects of non-lethal concentrations of imidacloprid, benomyl, and metribuzin on the gut bacterial community of Lumbricus terrestris using high-throughput sequencing approach. We found that pesticides reduced the total bacterial diversity in the earthworm’s gut even at the recommended application rate. Under the applied pesticides, the structure of the gut prokaryotic community underwent changes in the relative abundance of the phyla Proteobacteria, Actinobacteria, Acidobacteria, Planctomyces, Verrucomicrobia, and Cyanobacteria, as well as the genera Haliangium, Gaiella, Paenisporosarcina, Oryzihumus, Candidatus Udaeobacter, and Aquisphaera. Moreover, the pesticides affected the abundance of Verminephrobacter—the earthworms’ nephridia specific symbionts. In general, the negative impact of pesticides on bacterial biodiversity was significant even under pesticides content, which was much lower than their acute and chronic toxicity values for the earthworms. These results highlighted the fact that the earthworm’s gut microbial community is highly sensitive to soil contamination with pesticides. Therefore, such examination should be considered in the pesticide risk assessment protocols. |
| first_indexed | 2024-12-13T08:21:47Z |
| format | Article |
| id | doaj.art-bf0eef25fc6b4b35abb8fe543babb734 |
| institution | Directory Open Access Journal |
| issn | 1664-302X |
| language | English |
| last_indexed | 2024-12-13T08:21:47Z |
| publishDate | 2022-03-01 |
| publisher | Frontiers Media S.A. |
| record_format | Article |
| series | Frontiers in Microbiology |
| spelling | doaj.art-bf0eef25fc6b4b35abb8fe543babb7342022-12-21T23:53:59ZengFrontiers Media S.A.Frontiers in Microbiology1664-302X2022-03-011310.3389/fmicb.2022.853535853535Effects of Three Pesticides on the Earthworm Lumbricus terrestris Gut MicrobiotaAngelika Astaykina0Rostislav Streletskii1Mikhail Maslov2George Krasnov3Victor Gorbatov4Soil Science Faculty, Lomonosov Moscow State University, Moscow, RussiaSoil Science Faculty, Lomonosov Moscow State University, Moscow, RussiaSoil Science Faculty, Lomonosov Moscow State University, Moscow, RussiaEngelhardt Institute of Molecular Biology, Russian Academy of Sciences, Moscow, RussiaCentre for Ecopesticides Research, LLC, Moscow, RussiaEarthworms play a vital role in the terrestrial ecosystem functioning and maintenance of soil fertility. However, many pesticides, for example, imidacloprid, benomyl, and metribuzin that are world-widely used in agriculture, may be potentially dangerous to earthworms. At the same time, standard tests for pesticides acute and chronic toxicity do not reflect all aspects of their negative impact and might not be enough sensitive for effective assessment. In this paper, we studied the effects of non-lethal concentrations of imidacloprid, benomyl, and metribuzin on the gut bacterial community of Lumbricus terrestris using high-throughput sequencing approach. We found that pesticides reduced the total bacterial diversity in the earthworm’s gut even at the recommended application rate. Under the applied pesticides, the structure of the gut prokaryotic community underwent changes in the relative abundance of the phyla Proteobacteria, Actinobacteria, Acidobacteria, Planctomyces, Verrucomicrobia, and Cyanobacteria, as well as the genera Haliangium, Gaiella, Paenisporosarcina, Oryzihumus, Candidatus Udaeobacter, and Aquisphaera. Moreover, the pesticides affected the abundance of Verminephrobacter—the earthworms’ nephridia specific symbionts. In general, the negative impact of pesticides on bacterial biodiversity was significant even under pesticides content, which was much lower than their acute and chronic toxicity values for the earthworms. These results highlighted the fact that the earthworm’s gut microbial community is highly sensitive to soil contamination with pesticides. Therefore, such examination should be considered in the pesticide risk assessment protocols.https://www.frontiersin.org/articles/10.3389/fmicb.2022.853535/fullpesticidesnext-generation sequencingearthwormgut microbiotabacterial biodiversity |
| spellingShingle | Angelika Astaykina Rostislav Streletskii Mikhail Maslov George Krasnov Victor Gorbatov Effects of Three Pesticides on the Earthworm Lumbricus terrestris Gut Microbiota Frontiers in Microbiology pesticides next-generation sequencing earthworm gut microbiota bacterial biodiversity |
| title | Effects of Three Pesticides on the Earthworm Lumbricus terrestris Gut Microbiota |
| title_full | Effects of Three Pesticides on the Earthworm Lumbricus terrestris Gut Microbiota |
| title_fullStr | Effects of Three Pesticides on the Earthworm Lumbricus terrestris Gut Microbiota |
| title_full_unstemmed | Effects of Three Pesticides on the Earthworm Lumbricus terrestris Gut Microbiota |
| title_short | Effects of Three Pesticides on the Earthworm Lumbricus terrestris Gut Microbiota |
| title_sort | effects of three pesticides on the earthworm lumbricus terrestris gut microbiota |
| topic | pesticides next-generation sequencing earthworm gut microbiota bacterial biodiversity |
| url | https://www.frontiersin.org/articles/10.3389/fmicb.2022.853535/full |
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