细菌对石菌-细菌共生有何贡献的基因组和诱导证据
Alexandra K Stiffler1, Poppy J Hesketh-Best1,2, Natascha S Varona1
1Department of Biology, University of Miami, Coral Gables, FL, 33146, USA.
Microbiome
|August 1, 2024
概括
病毒称为prophages增强细菌生活在 sargassum海藻的基因组多样性. 菌诱导减少了细菌生物膜的形成,影响了藻类的共生和生长.
科学领域:
- 微生物生态学 微生物生态学
- 海洋生物学 海洋生物学
- 病毒学 病毒学
背景情况:
- 细菌-真核生物共生对于营养交换和宿主适应至关重要.
- 细菌病毒 (菌体) 对这些相互作用的影响尚不清楚.
- 类石的扩张需要了解与之相关的微生物群落.
研究的目的:
- 调查病毒在与海底沙相关的细菌的基因组多样性中的作用.
- 确定菌体如何影响细菌的功能适应和与藻的共生.
- 评估菌体对细菌生物膜形成和藻相互作用的影响.
主要方法:
- 细菌和病毒转基因组组装基因组 (bMAGs和vMAGs) 的重建.
- 在和海水中的细菌和病毒群体的比较分析.
- 在体外测试以评估细菌对病毒感染和菌体诱导的反应.
- 生物膜形成试验和基因丰富分析.
主要成果:
- 与海水相比,与气相关的细菌 (bMAGs) 显示出更高的prophage丰富性.
- 细菌宿主 (Rhodobacterales, Synechococcus) 与和海水中的不同菌体有关.
- 藻菌体含有生物膜形成和定数感应的基因.
- 诱导性prophages在sargassum细菌被保护免受Lytic感染,并在诱导时减少生物膜的形成.
结论:
- 体有助于与体相关的细菌的基因组灵活性.
- 菌体编码共生功能,并调节生物膜的形成,这对藻-细菌共生至关重要.
- 菌体动力学在共生细菌的基因组和功能多样化中发挥作用,可能会影响藻类生长.
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