Distribution and diversity of microbial communities in meromictic soda Lake Doroninskoe(Transbaikalia,Russia) during winter  

作　　者：Evgeniya MATYUGINA Natalia BELKOVA 

机构地区：[1]Institute of Natural Resources,Ecology and Cryology,Siberian Branch of the Russian Academy of Sciences [2]Limnological Institute,Siberian Branch of the Russian Academy of Sciences [3]Irkutsk State University

出　　处：《Chinese Journal of Oceanology and Limnology》2015年第6期1378-1390,共13页中国海洋湖沼学报（英文版）

基　　金：Supported by the Project of SB RAS(No.56)

摘　　要：Meromictic soda and saline lakes are unique ecosystems characterized by the stability of physical,chemical and biological parameters,and they are distributed all over the world.Lakes located in regions with average annual negative air temperature are of particular interest because of the presence of two periods with intensive and dynamic processes:the so-called biological summer and the long ice season with the biological spring.Soda Lake Doroninskoe is located in Eastern Transbaikalia(51°14′N,112°14′E) in the permafrost zone in an extreme continental climate,and is covered by ice for seven months per year.The structure and diversity of the microbial communities throughout the water column of the lake was studied by 16 S r RNA gene amplicon metasequencing.Different species with specific functions were found to dominate at different depths.Metabolically flexible bacteria with a capacity to switch between anoxygenic photosynthesis and aerobic chemotrophic metabolism dominate in soda Lake Doroninskoe.Meromictic soda and saline lakes are unique ecosystems characterized by the stability of physical, chemical and biological parameters, and they are distributed all over the world. Lakes located in regions with average annual negative air temperature are of particular interest because of the presence of two periods with intensive and dynamic processes： the so-called biological summer and the long ice season with the biological spring. Soda Lake Doroninskoe is located in Eastern Transbaikalia （51~14＇N, 112~ 14＇E） in the permafrost zone in an extreme continental climate, and is covered by ice for seven months per year. The structure and diversity of the microbial communities throughout the water column of the lake was studied by 16S rRNA gene amplicon metasequencing. Different species with specific functions were found to dominate at different depths. Metabolically flexible bacteria with a capacity to switch between anoxygenic photosynthesis and aerobic chemotrophic metabolism dominate in soda Lake Doroninskoe.

关 键 词：bacterial diversity soda lake MEROMIXIS Lake Doroninskoe 16S rRNA genes high-throughput amplicon sequencing 

分 类 号：Q938.8[生物学—微生物学]