维生素B12通过菌体介导的海洋细菌Sulfitobacter sp.的细胞溶解释放. M3939 没有任何问题
Sabiha Sultana1, Stefan Bruns1, Armando Pacheco-Valenciana2
1Institute for Chemistry and Biology of the Marine Environment (ICBM), School of Mathematics and Science, Carl von Ossietzky Universität Oldenburg, Oldenburg, Germany.
ISME communications
|September 25, 2025
概括
感染细菌的菌体释放维生素B12 (B12),这对海洋生物至关重要. 这种菌体介导的细胞溶解是控制海洋生态系统中B12可用性的关键机制.
科学领域:
- 海洋微生物学 海洋微生物学
- 生物地质化学循环是什么
- 病毒学 病毒学
背景情况:
- 维生素B12 (B12) 对大多数生物是必不可少的,但仅由一些细菌合成.
- 生产B12的细菌可以保留维生素,在海洋环境中造成稀缺.
- 控制B12释放和可用性的机制对海洋生态系统至关重要.
研究的目的:
- 研究菌体介导的细胞溶解作为B12释放机制.
- 评估这种释放对其他海洋微生物的影响.
- 了解病毒溶解在海洋B族维生素循环中的作用.
主要方法:
- 分离了特定于维生素B12保留细菌*Sulfitobacter* sp. 的细菌菌体. M39.M39.M39.M39.M39.M39.M39.M39.M39.M39.M39.M39.M39.M
- 用*Sulfitobacter* sp.进行单种和共同培养的实验. M39和藻 (Thalassiosira pseudonana) 在其中之一.
- 量化细胞外B12和监测细菌和藻类生长.
主要成果:
- 菌体感染 *Sulfitobacter* sp. 的菌体感染 M39导致病毒样颗粒和细胞外B12的增加.
- 在感染后,细菌生长减少.
- 与藻共同培养显示了菌体添加后的快速微藻生长,表明B12利用.
结论:
- 通过菌体介导的化 *Sulfitobacter* sp. M39将B12释放到环境中.
- 这一过程支持诸如Thalassiosira pseudonana*之类的辅食性生物体的生长.
- 病毒溶解是海洋生态系统中B族维生素循环的重要驱动因素.
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