番茄品种会影响果实周周的Shigella flexneri 2a的生存
Tania Henriquez1, Simona Guerra2, Marta Nerini2
1Department of Medical Biotechnologies, University of Siena, 53100 Siena, Italy.
Pathogens (Basel, Switzerland)
|May 24, 2024
概括
在两种番茄品种中,Shigella flexneri 2a的生存方式不同. 六天后,它只存在于Mini Plum番茄上,而不是Vine番茄上,这表明各种病原体在产品上生存.
科学领域:
- 微生物学 微生物学
- 食品安全 食品安全
- 病原体生态学 病原体生态学
背景情况:
- 产品中的肠道病原体对公众健康构成重大风险,番茄与沙门氏菌和大肠杆菌爆发有关.
- 有限的数据存在于Shigella物种的生存,一个显著的人类病原体,在收获后的西红.
研究的目的:
- 调查Shigella flexneri 2a在两种不同的收获后番茄品种的生存动态:葡萄藤和迷你梅.
- 探索SRL病原性岛 (SRL PAI) 在Shigella flexneri 2a中的作用.番茄的生存和适应性.
主要方法:
- 将Shigella flexneri 2a注射到Vine和Mini Plum西红的周心和局部腔中.
- 在疫苗注射后的不同时间点数目中,存活的Shigella殖民地.
- 使用分子技术分析SRLPAI对细菌生存和健康的贡献.
主要成果:
- 在第2天,在周围地区的番茄品种之间没有观察到Shigella存活率的显著差异.
- 到第6天,Shigella仅从Mini Plum品种中检测到,而在Vine品种中没有检测到.
- 深度注射到局部腔中显示,在Shigella生存中没有显著的品种差异.
- SRL PAI对存活不至关重要,但影响了西格拉柔性菌2a在番茄中的适应性.
结论:
- 番茄品种显著影响了Shigella flexneri 2a在收获后产品上的持久性.
- 了解超出人类宿主范围的病原体生态,并识别影响细菌生存的分子因素,对于减轻食源性疾病风险至关重要.
- 即使在新鲜农产品中含有低水平的西格拉菌污染也可能对健康构成威胁.
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