与抗生素相比,菌体治疗对细菌社区结构的影响很小
Madeleine S Gundersen1, Alexander W Fiedler2, Ingrid Bakke2
1Department of Biotechnology and Food Science, Norwegian University of Science and Technology (NTNU), Trondheim, Norway. madeleine.gundersen@ntnu.no.
Scientific reports
|November 29, 2023
概括
当目标宿主存在时,菌体治疗对细菌群体的影响最小. 抗生素显著改变了社区结构,而菌体治疗的破坏性较小,特别是当宿主缺席时.
科学领域:
- 微生物学 微生物学
- 社区生态学 社区生态学
- 环境科学 环境科学
背景情况:
- 菌体治疗是一种潜在的抗生素替代品,但其对寄居细菌群落的影响尚不清楚.
- 菌体的细菌溶解释放资源,影响社区动态.
- 目标细菌的密度是对菌体治疗有效性的关键因素,但尚未得到充分研究.
研究的目的:
- 为了研究菌体治疗如何影响细菌群体结构在不同的密度的目标细菌,Flavobacterium columnare.
- 为了比较菌体治疗与抗生素治疗对微生物群落的影响.
- 确定细菌宿主密度是否影响社区聚集和对菌体治疗的反应.
主要方法:
- 带有湖泊衍生的细菌群落的微观世界被Flavobacterium columnare以不同的密度 (无,低,高) 接种.
- 治疗包括菌体FCL-2,抗生素青素,或在3x3因数设计中没有治疗.
- 细菌群体的组成和密度在一周内使用16S rDNA amplicon测序和流细胞计分析.
主要成果:
- 当宿主细菌存在时,菌体治疗对社区多样性和结构产生了轻微影响.
- 当宿主缺席时,菌体治疗导致了社区组成的显著变化,特别是AQUIRUFA的增加.
- 抗生素治疗引发了所有社区特征的实质性改变,包括玛蛋白质细菌的繁荣和向生态漂移的转变.
结论:
- 与抗生素治疗相比,菌体治疗对细菌群体的破坏性明显较小.
- 细菌宿主密度会影响社区的聚集,更高的密度会促进随机过程.
- 目标细菌的密度对于理解菌体治疗效果和改善实验可重复性至关重要.
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