Butina Tatyana V, Bukin Yurij S, Petrushin Ivan S, Tupikin Alexey E, Kabilov Marsel R, Belikov Sergey I
Limnological Institute, Siberian Branch of the Russian Academy of Sciences, Ulan-Batorskaya Str., 3, 664033 Irkutsk, Russia.
Institute of Chemical Biology and Fundamental Medicine, Siberian Branch of the Russian Academy of Sciences, Lavrentiev Ave., 8, 630090 Novosibirsk, Russia.
Microorganisms. 2021 Apr 5;9(4):760. doi: 10.3390/microorganisms9040760.
Lake Baikal is a unique oligotrophic freshwater lake with unusually cold conditions and amazing biological diversity. Studies of the lake's viral communities have begun recently, and their full diversity is not elucidated yet. Here, we performed DNA viral metagenomic analysis on integral samples from four different deep-water and shallow stations of the southern and central basins of the lake. There was a strict distinction of viral communities in areas with different environmental conditions. Comparative analysis with other freshwater lakes revealed the highest similarity of Baikal viromes with those of the Asian lakes Soyang and Biwa. Analysis of new data, together with previously published data allowed us to get a deeper insight into the diversity and functional potential of Baikal viruses; however, the true diversity of Baikal viruses in the lake ecosystem remains still unknown. The new metaviromic data will be useful for future studies of viral composition, distribution, and the dynamics associated with global climatic and anthropogenic impacts on this ecosystem.
贝加尔湖是一个独特的贫营养淡水湖，具有异常寒冷的条件和惊人的生物多样性。对该湖病毒群落的研究最近才开始，其全部多样性尚未阐明。在这里，我们对该湖南部和中部盆地四个不同深水和浅水站点的完整样本进行了DNA病毒宏基因组分析。在不同环境条件的区域，病毒群落存在严格的差异。与其他淡水湖的比较分析表明，贝加尔湖病毒群落与亚洲的昭阳湖和琵琶湖的病毒群落最为相似。对新数据以及先前发表的数据的分析使我们能够更深入地了解贝加尔湖病毒的多样性和功能潜力；然而，贝加尔湖病毒在湖泊生态系统中的真正多样性仍然未知。这些新的宏病毒组数据将有助于未来对病毒组成、分布以及与全球气候和人为因素对该生态系统影响相关的动态变化的研究。
