PMID- 33465613 OWN - NLM STAT- MEDLINE DCOM- 20210406 LR - 20210406 IS - 1879-1298 (Electronic) IS - 0045-6535 (Linking) VI - 272 DP - 2021 Jun TI - Changes in soil and rat gut microbial diversity after long-term exposure to the chiral fungicide epoxiconazole. PG - 129618 LID - S0045-6535(21)00088-6 [pii] LID - 10.1016/j.chemosphere.2021.129618 [doi] AB - In previous articles, it was found that epoxiconazole enantiomers can persist for a long time in the environment, causing severe environmental damage. Herein, we investigated alterations in the soil microbial community and rat gut microbiota after six weeks of treatment with rac-epoxiconazole or one of its enantiomers. The selected concentrations were 1, 2, and 6 times greater than the maximum residue limits (MRLs). The rat gut microbiota relative abundance in the feces signi fi cantly changed following exposure to rac-epoxiconazole or one of its enantiomers. At the phylum level, in the R,S-, S,R-epoxiconazole, and rac-treated groups, Firmicutes presented the greatest decrease in abundance; however, Spirochaetes presented the greatest increase in abundance in the rac- and S,R-epoxiconazole-treated groups. In response to R,S-epoxiconazole, Epsilonbacteraeota presented the greatest increase in abundance. In soil samples treated with epoxiconazole, the relative abundance of the soil bacterial community also changed. Proteobacteria presented the greatest decrease in abundance in the S,R- and rac-treated samples. However, Firmicutes presented the greatest increase in abundance. In the R,S-treated soil samples, the situation was the opposite. In general, prolonged exposure to epoxiconazole at high concentrations could initiate noticeable alterations in rat gut microbiota and soil microbial diversity. R,S-epoxiconazole had improved bioactivity and less toxic effects at relatively low concentrations. Therefore, we recommend using R,S-epoxiconazole at a relatively low concentration, which is better for environmental safety. CI - Copyright (c) 2021 Elsevier Ltd. All rights reserved. FAU - Kaziem, Amir E AU - Kaziem AE AD - Department of Pesticide Science, College of Plant Protection, Nanjing Agricultural University, State & Local Joint Engineering Research Center of Green Pesticide Invention and Application, Nanjing, 210095, China; Department of Environmental Agricultural Sciences, Institute of Environmental Studies and Research, Ain Shams University, Cairo, 11566, Egypt. FAU - He, Zongzhe AU - He Z AD - Department of Pesticide Science, College of Plant Protection, Nanjing Agricultural University, State & Local Joint Engineering Research Center of Green Pesticide Invention and Application, Nanjing, 210095, China. FAU - Li, Lianshan AU - Li L AD - Department of Pesticide Science, College of Plant Protection, Nanjing Agricultural University, State & Local Joint Engineering Research Center of Green Pesticide Invention and Application, Nanjing, 210095, China. FAU - Wen, Yong AU - Wen Y AD - Department of Pesticide Science, College of Plant Protection, Nanjing Agricultural University, State & Local Joint Engineering Research Center of Green Pesticide Invention and Application, Nanjing, 210095, China. FAU - Wang, Zhen AU - Wang Z AD - Department of Pesticide Science, College of Plant Protection, Nanjing Agricultural University, State & Local Joint Engineering Research Center of Green Pesticide Invention and Application, Nanjing, 210095, China. FAU - Gao, Yingying AU - Gao Y AD - Department of Pesticide Science, College of Plant Protection, Nanjing Agricultural University, State & Local Joint Engineering Research Center of Green Pesticide Invention and Application, Nanjing, 210095, China. FAU - Wang, Minghua AU - Wang M AD - Department of Pesticide Science, College of Plant Protection, Nanjing Agricultural University, State & Local Joint Engineering Research Center of Green Pesticide Invention and Application, Nanjing, 210095, China. Electronic address: wangmha@njau.edu.cn. LA - eng PT - Journal Article DEP - 20210111 PL - England TA - Chemosphere JT - Chemosphere JID - 0320657 RN - 0 (Epoxy Compounds) RN - 0 (Fungicides, Industrial) RN - 0 (Soil) RN - 0 (Triazoles) RN - U80T84L776 (epoxiconazole) SB - IM MH - Animals MH - Epoxy Compounds/toxicity MH - *Fungicides, Industrial/analysis/toxicity MH - *Gastrointestinal Microbiome MH - Rats MH - Soil MH - Triazoles OTO - NOTNLM OT - Enantiomers OT - Epoxiconazole OT - Gut microbiota OT - Soil bacterial diversity COIS- Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper. EDAT- 2021/01/20 06:00 MHDA- 2021/04/07 06:00 CRDT- 2021/01/19 20:11 PHST- 2020/11/27 00:00 [received] PHST- 2021/01/05 00:00 [revised] PHST- 2021/01/08 00:00 [accepted] PHST- 2021/01/20 06:00 [pubmed] PHST- 2021/04/07 06:00 [medline] PHST- 2021/01/19 20:11 [entrez] AID - S0045-6535(21)00088-6 [pii] AID - 10.1016/j.chemosphere.2021.129618 [doi] PST - ppublish SO - Chemosphere. 2021 Jun;272:129618. doi: 10.1016/j.chemosphere.2021.129618. Epub 2021 Jan 11.