Impacts of Chemical and Organic Fertilizers on the Bacterial Communities, Sulfonamides and Sulfonamide Resistance Genes in Paddy Soil Under Rice-Wheat Rotation
文献类型： 外文期刊
作者： Xu, Fen 1 ; Sun, Guofeng 2 ; Du, Wenchao 3 ; Ai, Fuxun 1 ; Yin, Ying 1 ; Guo, Hongyan 1 ;
作者机构： 1.Nanjing Univ, Sch Environm, State Key Lab Pollut Control & Resource Reuse, Nanjing 210046, Peoples R China
2.Jiangsu Acad Agr Sci, Inst Agr Resources & Environm, Key Lab Crop & Anim Integrated Farming, Minist Agr & Rural Affairs, Nanjing 210014, Peoples R China
3.Nanjing Normal Univ, Sch Environm, Nanjing 210036, Peoples R China
关键词： Organic fertilizer; Antibiotics; Soil bacterial community; Sulfonamide-resistance genes
期刊名称：BULLETIN OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY （ 影响因子：2.7； 五年影响因子：2.5 ）
ISSN： 0007-4861
年卷期： 2023 年 110 卷 1 期
页码：
收录情况： SCI
摘要： The responses of sulfonamides, sulfonamide-resistance genes (sul) and soil bacterial communities to different fertilization regimes were investigated by performing a field experiment using paddy soil with no fertilizer applied, chemical fertilizer applied, organic fertilizer applied, and combination of chemical and organic fertilizer applied. Applying organic fertilizer increased the bacterial community diversity and affected the bacterial community composition. Eutrophic bacteria (Bacteroidetes, Gemmatimonadetes, and Proteobacteria) were significantly enriched by applying organic fertilizer. It was also found organic fertilizer application increased sulfamethazine content and the relative abundances of sul1 and sul2 in the soil. In contrast, applying chemical fertilizer significantly increased the abundance of Nitrospirae, Parcubacteria, and Verrucomicrobia and caused no obvious changes on sul. Correlation analysis indicated that sul enrichment was associated with the increases in sulfamethazine content and potential hosts (e.g., Novosphingobium and Rhodoplanes) population. The potential ecological risks of antibiotics in paddy soil with organic fertilizer applied cannot be ignored.
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