Dicyandiamide Applications Mitigate the Destructive Effects of Graphene Oxide on Microbial Activity, Diversity, and Composition and Nitrous Oxide Emission in Agricultural Soil,Journal of Agricultural and Food Chemistry

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Dicyandiamide Applications Mitigate the Destructive Effects of Graphene Oxide on Microbial Activity, Diversity, and Composition and Nitrous Oxide Emission in Agricultural Soil
Journal of Agricultural and Food Chemistry ( IF 5.7 ) Pub Date : 2024-09-17 , DOI: 10.1021/acs.jafc.4c04761
Yan Wang ₁ , Fang Wang ₂ , Rebecca Ford ₃ , Wenhui Tang ₁ , Minzhe Zhou ₁ , Bin Ma ₁ , Manyun Zhang _{1,

3}

Affiliation

The widespread production and utilization of graphene oxide (GO) raise concerns about its environmental release and potential ecological impacts, particularly in agricultural soil. Effective nitrogen (N) management, especially through nitrification inhibitors like dicyandiamide (DCD), might mitigate the negative effects of GO exposure on soil microbes via N biostimulation. This study quantified changes in soil physicochemical properties, nitrous oxide (N₂O) emissions, microbial activity, biomass, and community after treatments with GO and DCD. The GO exposure significantly reduced bacterial 16S rRNA gene abundance and the biomass of major bacterial phyla. It also stimulated pathways linked to human diseases. However, DCD application alleviated the negative effects of GO exposure on soil bacterial biomass. While DCD application significantly reduced soil N₂O emission, the GO application tended to hinder the inhibiting performance of DCD. Our findings highlight the hazards of GO exposure to soil microbes and the potential mitigation strategy with soil N management.

中文翻译：

双氰胺应用减轻了氧化石墨烯对农业土壤中微生物活性、多样性、成分和一氧化二氮排放的破坏性影响

氧化石墨烯（GO）的广泛生产和利用引发了人们对其环境释放和潜在生态影响的担忧，尤其是在农业土壤中。有效的氮（N）管理，特别是通过双氰胺（DCD）等硝化抑制剂，可能会通过氮生物刺激减轻 GO 暴露对土壤微生物的负面影响。本研究量化了 GO 和 DCD 处理后土壤理化性质、一氧化二氮（N₂O）排放、微生物活性、生物量和群落的变化。GO 暴露显著降低了细菌 16S rRNA 基因丰度和主要细菌门的生物量。它还刺激了与人类疾病相关的途径。然而，DCD 应用减轻了 GO 暴露对土壤细菌生物量的负面影响。虽然 DCD 施用显着降低了土壤 N₂O 的排放，但 GO 施用往往会阻碍 DCD 的抑制性能。我们的研究结果强调了 GO 暴露于土壤微生物的危害以及土壤氮管理的潜在缓解策略。

更新日期：2024-09-17

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