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<p>The persistence of food-borne pathogens in soil can trigger disease outbreaks, highlighting the critical need to understand their survival patterns. Here we investigate the survival of <i>Escherichia coli</i> O157:H7, a notable food-borne pathogen, across 81 natural soils from eastern China using inoculation experiments. <i>E. coli</i> O157:H7 survival ranged from 2.0 days to 43.3 days in soils. The survival-time map revealed hotspots and geographical heterogeneity of <i>E. coli</i> O157:H7 survival across eastern China. Bioinformatics analysis and validation experiments identified available phosphorus as the major factor controlling <i>E. coli</i> O157:H7 survival, with higher available phosphorus content in soils extending their survival. Two opportunistic pathogens, <i>Enterococcus faecium</i> and <i>Aerococcus viridans</i>, facilitated <i>E. coli</i> O157:H7 survival by forming biofilm structures and cross-feeding, respectively. Climate factors showed mostly indirect correlations with <i>E. coli</i> O157:H7. These findings enhance our understanding of food-borne pathogen survival in soils and offer insights to inform agricultural practices for preventing and controlling outbreaks.</p>

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Available phosphorus and opportunistic pathogens drive geographic variation in Escherichia coli O157:H7 survival in soils across eastern China

  • 期刊论文

  • 发表日期：

    2025年7月15日

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  • Jianming Xu,
  • Nan Zhang,
  • Zhiyuan Yao,
  • Taoxiang Zhang,
  • Jiajia Xing,
  • Haizhen Wang,
  • Zhiwen Jiang,
  • Randy A. Dahlgren,
  • Bin Ma

摘要

The persistence of food-borne pathogens in soil can trigger disease outbreaks, highlighting the critical need to understand their survival patterns. Here we investigate the survival of Escherichia coli O157:H7, a notable food-borne pathogen, across 81 natural soils from eastern China using inoculation experiments. E. coli O157:H7 survival ranged from 2.0 days to 43.3 days in soils. The survival-time map revealed hotspots and geographical heterogeneity of E. coli O157:H7 survival across eastern China. Bioinformatics analysis and validation experiments identified available phosphorus as the major factor controlling E. coli O157:H7 survival, with higher available phosphorus content in soils extending their survival. Two opportunistic pathogens, Enterococcus faecium and Aerococcus viridans, facilitated E. coli O157:H7 survival by forming biofilm structures and cross-feeding, respectively. Climate factors showed mostly indirect correlations with E. coli O157:H7. These findings enhance our understanding of food-borne pathogen survival in soils and offer insights to inform agricultural practices for preventing and controlling outbreaks.