Acta Agriculturae Zhejiangensis ›› 2026, Vol. 38 ›› Issue (3): 551-558.DOI: 10.3969/j.issn.1004-1524.20250024

• Environmental Science • Previous Articles     Next Articles

Effect of antibiotic stress on antibiotic resistance genes in soils with different fertilization histories

ZHU Sengen1(), CHENG Jianhua2,*(), ZHU Xingna3, LI Jianxin4, TANG Xiangyu2   

  1. 1. Zhejiang Honggaitou Agricultural Science and Technology Co., Ltd., Jiangshan 324109, Zhejiang, China
    2. School of Forestry and Biotechnology, Zhejiang A&F University, Hangzhou 311300, China
    3. School of Modern Agriculture, Jiaxing Vocational & Technical College, Jiaxing 314036, Zhejiang, China
    4. Forestry Bureau of Jiangshan County, Jiangshan 324100, Zhejiang, China
  • Received:2025-01-06 Online:2026-03-25 Published:2026-04-17
  • Contact: CHENG Jianhua

Abstract:

The effects of antibiotic selective pressure on antibiotic resistance genes (ARGs) in agricultural soils with long term application of different manures remain poorly understood. The high-throughput quantitative polymerase chain reaction technology was adopted in the present study to analyze the effect of antibiotic dose on the number, relative abundance and composition of ARGs in farmland soils subjected to long-term application of chemical fertilizers, chicken manure, and pig manure. The results showed that a total of 109 ARGs and 24 mobile genetic elements (MGEs) were detected across all soil samples. Genes conferring resistance to aminoglycosides and multiple drugs were the two most dominant types of ARGs. Long-term manure application enhanced both the number and relative abundance of soil ARGs and altered their distribution patterns, with pig manure demonstrating a more pronounced effect. Likely, antibiotic addition also stimulated the spread of ARGs in soil, while its extent increased with antibiotic concentration and varied depending on the soil fertilization history. The response of ARGs detection frequency to antibiotic stress was more pronounced in soils with a history of chemical fertilizer application, while the relative concentration and distribution patterns of ARGs in manure-amended soils showed greater sensitivity to antibiotics. Additionally, the relative abundance of soil MGEs showed a significantly (p<0.01) positive correlation with that of ARGs irrespective of soil types. These results provided a scientific basis for the evaluation of health risk of agricultural application of livestock manure.

Key words: soil, fertilization history, antibiotic stress, antibiotic resistance genes, dose-response

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