蓝菌感染了海洋的蓝菌Prochlorococcus
Matthew B Sullivan1, John B Waterbury, Sallie W Chisholm
1MIT/Woods Hole Oceanographic Institution Joint Program in Biological Oceanography, Cambridge, Massachusetts 02139, USA.
Nature
|August 29, 2003
概括
研究人员分离了感染Prochlorococcus的病毒,这是最丰富的海洋光合作用生物. 这些菌体可以在不同菌株之间转移基因,影响海洋生态系统和微生物基因流.
科学领域:
- 海洋微生物学 海洋微生物学
- 病毒学 病毒学
- 海洋学 海洋学 海洋学
背景情况:
- 普罗克洛科克 (Prochlorococcus) 是热带和亚热带海洋中占主导地位的摄影.
- 它占海洋光合作用生物质的很大一部分.
- 了解其与病毒的相互作用对于海洋生态系统动态至关重要.
研究的目的:
- 为了隔离和描述感染Prochlorococcus的蓝菌.
- 为了研究这些菌体的宿主范围和基因传输潜力.
- 为了确定在开放海洋环境中的蓝菌标位.
主要方法:
- 从海洋环境中隔离蓝菌.
- 通过交叉感染实验来确定宿主范围.
- 蓝菌和蓝菌种群的量化.
主要成果:
- 隔离了感染Prochlorococcus的蓝菌.
- 一些菌体表现出Prochlorococcus和Synechococcus菌株之间的交叉感染能力.
- 波多病毒只在高光菌中发现,而Myoviridae在低光菌和Synechococcus中占主导地位.
- 尽管宿主丰富度很高,但在分层的寡质水中,蓝体标位很低.
结论:
- 蓝菌在海洋蓝菌之间水平基因转移中发挥作用.
- 虫家族 (Podoviridae,Myoviridae) 与宿主适应 (高光对低光) 相对应.
- 开放海洋的低蓝体标位可能与微生物种群多样性,生长率或溶解发生有关.
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