海洋菌体中的食原体:多样性,活动和与宿主相互作用
Ruijie Ma1,2, Bu Xu1,2, Xiaowei Chen3
1College of Civil and Transportation Engineering, Shenzhen University, Shenzhen, Guangdong, 518060, China.
ISME communications
|October 3, 2025
概括
海洋菌对细菌的适应和进化有重大影响. 这些温带菌体影响微生物种群动态,提供保护和推动海洋生态系统的多样性.
科学领域:
- 海洋微生物学 海洋微生物学
- 病毒学 病毒学
- 基因组学就是基因组学.
- 进化生物学是进化的生物学.
背景情况:
- Lysogeny (温带菌体融入宿主基因组) 在海洋环境中很常见.
- 菌对海洋微生物种群和个体动态的影响尚不清楚.
- 了解菌体的作用对于破译海洋中的微生物进化至关重要.
研究的目的:
- 使用模型系统研究温带菌体基因组 (原) 对海洋微生物种群的影响.
- 描述海洋细菌中新型的prophages及其编码的基因.
- 阐明海洋宿主中prophages的进化策略和竞争动态.
主要方法:
- 对海洋 *Citromicrobium* 菌株收集的分析,以识别 lysogens 和描述 prophages.
- 超基因组分析,以与宿主群体动态相关联的prophage丰度.
- 宿主范围的分析和测序,以了解传播者与宿主之间的相互作用和竞争战略.
主要成果:
- 58%的 *Citromicrobium* 菌株是溶解原体,在五个新型属中拥有 31 个菌体.
- 前体基因占宿主辅助基因组的9%,增加了微生物多样性.
- 前体表现出"背着赢家"的动态",杀死亲属"/"殖民亲属"的策略,并提供超级感染免疫力.
结论:
- 体是海洋生态系统中细菌适应和进化的关键架构师.
- 海洋菌体采用复杂的策略,影响宿主群体动态和菌体间的竞争.
- 这项研究为海洋细菌宿主中由菌驱动的进化提供了新的视角.
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