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| Vertical quantitative and dominant population distribution of the bacteria isolated from the Muztagata ice core | |
| 引用本文： | XIANG Shurong1,YAO Tandong1,2,AN Lizhe1,3,WU Guangjian2,XU Baiqing2,MA Xiaojun 3,LI Zhen1,WANG Junxia1 & YU Wusheng1 1. Key Laboratory of Ice Core and Cold Regions Environment,Cold and Arid Regions Environmental and Engineering Research Institute,Chinese Academy of Sciences,Lanzhou 730000,China, 2. Institute of Tibetan Plateau Research,Chinese Academy of Sciences,Beijing 100085,China, 3. College of Life Science,Lanzhou University,Lanzhou 730000,China. Vertical quantitative and dominant population distribution of the bacteria isolated from the Muztagata ice core[J]. 中国科学D辑(英文版), 2005, 48(10). DOI: 10.1360/02YD0210 |
| 作者姓名： | XIANG Shurong1 YAO Tandong1 2 AN Lizhe1 3 WU Guangjian2 XU Baiqing2 MA Xiaojun 3 LI Zhen1 WANG Junxia1 & YU Wusheng1 1. Key Laboratory of Ice Core and Cold Regions Environment Cold and Arid Regions Environmental and Engineering Research Institute Chinese Academy of Sciences Lanzhou 730000 China 2. Institute of Tibetan Plateau Research Chinese Academy of Sciences Beijing 100085 China 3. College of Life Science Lanzhou University Lanzhou 730000 China |
| 作者单位： | XIANG Shurong1，YAO Tandong1，2，AN Lizhe1，3，WU Guangjian2，XU Baiqing2，MA Xiaojun 3，LI Zhen1，WANG Junxia1 & YU Wusheng1 1. Key Laboratory of Ice Core and Cold Regions Environment，Cold and Arid Regions Environmental and Engineering Research Institute，Chinese Academy of Sciences，Lanzhou 730000，China; 2. Institute of Tibetan Plateau Research，Chinese Academy of Sciences，Beijing 100085，China; 3. College of Life Science，Lanzhou University，Lanzhou 730000，China |
| 基金项目： | 国家自然科学基金，国家自然科学基金，Initial item of the Major Project of Ministry of Science and Technology of China for Fundamental Research，Science and Technology Cooperation Project of Ministry of Science and Technology of China，中国科学院知识创新工程项目 |
| 摘 要： | With rapid development of microbiology on ex-treme environment, many microorganisms have been found on glacial surface and in deep glacier around the world. The extensive 16S rRNA sequence analysis of bacteria isolated from glacial samples indicates that the bacteria in ice are highly similar to those from ocean, lake, terrestrial sediment and agricultural soil on the earth[1,2]. This suggests a close relationship be-tween the microorganisms in glacial region and those in other environments s… |
Vertical quantitative and dominant population distribution of the bacteria isolated from the Muztagata ice core |
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| XIANG Shurong,YAO Tandong,AN Lizhe,WU Guangjian,XU Baiqing,MA Xiaojun,LI Zhen,WANG Junxia,YU Wusheng. Vertical quantitative and dominant population distribution of the bacteria isolated from the Muztagata ice core[J]. Science in China(Earth Sciences), 2005, 48(10). DOI: 10.1360/02YD0210 | |
| Authors: | XIANG Shurong YAO Tandong AN Lizhe WU Guangjian XU Baiqing MA Xiaojun LI Zhen WANG Junxia YU Wusheng |
| Affiliation: | 1. Key Laboratory of Ice Core and Cold Regions Environment, Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences,Lanzhou 730000, China 2. Key Laboratory of Ice Core and Cold Regions Environment, Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences,Lanzhou 730000, China;Institute of Tibetan Plateau Research, Chinese Academy of Sciences, Beijing 100085, China 3. Key Laboratory of Ice Core and Cold Regions Environment, Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences,Lanzhou 730000, China;College of Life Science, Lanzhou University, Lanzhou 730000, China 4. Institute of Tibetan Plateau Research, Chinese Academy of Sciences, Beijing 100085, China 5. College of Life Science, Lanzhou University, Lanzhou 730000, China 6. Key Laboratory of Ice Core and Cold Regions Environment, Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences, Lanzhou 730000, China |
| Abstract: | Vertical distribution of the main bacteria isolated from the Muztagata ice core (about 22.4 m) was investigated by means of cultivation and 16S rRNA sequence analysis. The results showed that the amount of culturable bacteria fluctuated with ice core depth, and was more in dirty layer than in clean ice, which suggested the close corresponding relationship between high input of the bacteria deposited by wind and snowflow and dirty layer. Most of the bacteria were psychrophiles and psychrotolerants, including α- and γ-proteobacteria, Cryobacterium psychrophilum, CFB (Cytophaga-Flavobacterium-Bacteroides) group, high-G+C gram-positive bacteria (HGC). Acinetobacter sp. And HGC repeatly occurred in different ice depths, and their quantitative distribution was consistent with the change of the total amount of culturable bacteria with depth, which suggested the main bio-indicator; while Flavobacterium, Cryobacterium psychrophilum, and α-proteobacteria, also functioned as a secondary indicator of climatic and environmental changes. This study is the first report concerning continuous quantitative variation and pattern of the main culturable bacteria in ice core section. |
| Keywords: | Pamirs Plateau ice core pattern of bacteria bio-indicator. |
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