影响细菌细胞表面的菌体耐药性突变增加了在一个模型奶酪社区的真菌的敏感性
Tara C J Spencer-Drakes1, Angel Sarabia1,2, Gary Heussler1
1Division of Biological Sciences, Department of Molecular Biology, University of California, San Diego, 9500 Gilman Drive, La Jolla, CA 92093, United States.
ISME communications
|September 19, 2024
概括
研究人员研究了奶酪中的菌体-细菌相互作用,确定了感染Hafnia的菌体 (TS33). 哈夫尼亚的O-抗原基因影响菌体易感性和真菌相互作用,揭示了复杂的社区动态.
科学领域:
- 微生物学 微生物学
- 病毒学 病毒学
- 食品科学 食品科学 食品科学
背景情况:
- 菌体与宿主之间的相互作用在微生物组中至关重要,但在社区环境中人们对其了解甚少.
- 陈熟的奶酪皮提供了一个具有多样性和可再生的微生物群落的模型系统.
- 研究奶酪中的菌体-微生物动力学可以阐明基本的生态原理.
研究的目的:
- 在一个模型奶酪社区中识别和描述一个可处理的宿主-菌体对.
- 研究菌体感染性和宿主-菌体-真菌相互作用的分子机制.
- 探索细菌O-抗原在调解这些社区相互作用中的作用.
主要方法:
- 一种新型细菌菌体 (TS33) 和其细菌宿主 (Hafnia sp. (JB232) 这样一来.
- 涉及Hafnia,TS33和真菌物种 (Geotrichum candidum,Penicillium camemberti) 的生长试验.
- 随机条形码转子子序列 (RBTS) 用于识别菌体感染的宿主因素.
主要成果:
- 一种新型菌体,TS33被分离出来,能够感染Hafnia sp. JB232 在一个像Brie这样的奶酪社区中.
- RBTS确定了O-抗原生物合成基因同类基因对哈夫尼亚的TS33感染性至关重要.
- 带有改变O抗原基因的哈夫尼亚突变体显示菌体敏感性降低,但在真菌的存在下也经历了健身成本.
结论:
- 在乳酪环境中,O-抗原在调解Hafnia与细菌菌和真菌的相互作用方面发挥着重要作用.
- 在O-抗原生物合成中的敌对性类型可能会塑造细菌社区结构和动态.
- 这项研究确立了奶酪作为解剖复杂的菌体-微生物生态相互作用的有价值模型.
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