Assessment of the ecotoxicological impact of natural and synthetic β-triketone herbicides on the diversity and activity of the soil bacterial community using omic approaches

The Science of the Total Environment
Sana RomdhaneFabrice Martin-Laurent

Abstract

The emergence of pesticides of natural origin appears as an environmental-friendly alternative to synthetic pesticides for managing weeds. To verify this assumption, leptospermone, a natural β-triketone herbicide, and sulcotrione, a synthetic one, were applied to soil microcosms at 0× (control), 1× or 10× recommended field dose. The fate of these two herbicides (i.e. dissipation and formation of transformation products) was monitored to assess the scenario of exposure of soil microorganisms to natural and synthetic herbicides. Ecotoxicological impact of both herbicides was explored by monitoring soil bacterial diversity and activity using next-generation sequencing of 16S rRNA gene amplicons and soil metabolomics. Both leptospermone and sulcotrione fully dissipated over the incubation period. During their dissipation, transformation products of natural and synthetic β-triketone were detected. Hydroxy-leptospermone was almost completely dissipated by the end of the experiment, while CMBA, the major metabolite of sulcotrione, remained in soil microcosms. After 8 days of exposure, the diversity and structure of the soil bacterial community treated with leptospermone was significantly modified, while less significant changes were o...Continue Reading

Citations

May 14, 2020·Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry·Matteo PolitiMarinella De Leo
May 11, 2019·Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry·Hossein MardaniYoshiharu Fujii
Jan 29, 2021·Frontiers in Microbiology·Clémence Thiour-MauprivezFabrice Martin-Laurent
Dec 17, 2020·Molecular Nutrition & Food Research·Kathryn J Burton-PimentelGuy Vergères
Jun 4, 2019·The Science of the Total Environment·Clémence Thiour-MauprivezLise Barthelmebs
Jun 13, 2021·Environmental Science and Pollution Research International·Sara GallegoFabrice Martin-Laurent

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