麻的贝类毒素产生dinoflagellates导致dysbacteriosis在贝肠微生物生物膜
Zhongcheng Wei1, Liang Zhao2, Shuaitao Wang3
1MOE Key Laboratory of Marine Genetics and Breeding, Ocean University of China, Qingdao, China; Laboratory for Marine Fisheries Science and Food Production Processes, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266237, China.
Ecotoxicology and environmental safety
|February 27, 2024
概括
来自有害藻类的性贝类毒素 (PST) 破坏了贝肠道微生物,增加了致病性Vibrio细菌,导致死亡率. 这项研究揭示了PST如何通过肠道微生物群的改变影响水产养殖物种的健康.
科学领域:
- 海洋生物学 海洋生物学
- 微生物学 微生物学
- 生态毒理学 生态毒理学
背景情况:
- 过式养双动物从恐龙虫中积累了性贝类毒素 (PST).
- 双动物具有抗PST的通道,但仍然可以受到PST产生的恐龙鞭状体的伤害.
- 对于PST对两肠道微生物群和随后的健康的影响尚不清楚.
研究的目的:
- 为了研究产生PST的恐龙鞭状体对贝Patinopecten yessoensis的肠道微生物群的影响.
- 了解PST影响两动物健康和生存的机制.
- 为了确定潜在的致病细菌参与PST相关的死亡率.
主要方法:
- 肠道微生物群的比较分析,用产生PST的母与非有毒的恐龙鞭状动物进行了比较.
- 网络分析以将致病性细菌的数量与PST度相关联.
- 用Vibrio菌株进行隔离,基因组分析和感染实验.
主要成果:
- 暴露于产生PST的恐龙鞭状体减少了肠道微生物的多样性,改变了社区结构.
- 观察到病原性细菌的丰富性和丰富性增加,尤其是Vibrio.
- 一种特定的Vibrio菌株,表达了像tolC这样的毒性因子,导致了贝的死亡率,当tolC发生突变时,这种死亡率会降低.
结论:
- PST可以调节两肠道微生物群,促进机会性病原体的扩散,如Vibrio.
- 这种由直接和特定相互作用驱动的失生症有助于增加水产养殖物种的死亡率.
- 这些发现阐明了新的机制,将环境毒素与宿主病原体动态和水产养殖健康联系起来.
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