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首页> 外文期刊>Proceedings of the National Academy of Sciences of the United States of America >Genome sequence of Synechococcus CC9311: Insights into adaptation to a coastal environment
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Genome sequence of Synechococcus CC9311: Insights into adaptation to a coastal environment

机译：Synechococcus CC9311的基因组序列：洞悉适应沿海环境

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摘要

Coastal aquatic environments are typically more highly productive and dynamic than open ocean ones. Despite these differences, cyanobacteria from the genus Synechococcus are important primary producers in both types of ecosystems. We have found that the genome of a coastal cyanobacterium, Synechococcus sp. strain CC9311, has significant differences from an open ocean strain, Synechococcus sp. strain WH8102, and these are consistent with the differences between their respective environments. CC9311 has a greater capacity to sense and respond to changes in its (coastal) environment. It has a much larger capacity to transport, store, use, or export metals, especially iron and copper. In contrast, phosphate acquisition seems less important, consistent with the higher concentration of phosphate in coastal environments. CC9311 is predicted to have differences in its outer membrane lipopolysaccharide, and this may be characteristic of the speciation of some cyanobacterial groups. In addition, the types of potentially horizontally transferred genes are markedly different between the coastal and open ocean genomes and suggest a more prominent role for phages in horizontal gene transfer in oligotrophic environments.
机译：与沿海海洋环境相比，沿海水生环境通常具有更高的生产力和活力。尽管存在这些差异，但Synechococcus属的蓝细菌在这两种类型的生态系统中都是重要的初级生产者。我们已经发现沿海蓝藻，Synechococcus sp。的基因组。菌株CC9311与开放海洋菌株Synechococcus sp。有显着差异。菌株WH8102，它们与各自环境之间的差异一致。 CC9311具有更大的感知和响应其（沿海）环境变化的能力。它具有更大的运输，存储，使用或出口金属（特别是铁和铜）的能力。相反，磷酸盐的获取似乎不太重要，这与沿海环境中较高的磷酸盐浓度相一致。预计CC9311的外膜脂多糖具有差异，这可能是某些蓝细菌基团形成的特征。此外，沿海和开放海洋基因组之间潜在水平转移基因的类型明显不同，这表明噬菌体在贫营养环境中在水平基因转移中的作用更为突出。

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