| Diversity of 16S rDNA and environmental factor influencing microorganisms in Malan ice core |
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| 作者姓名： | ZHANGXiaojun MAXiaojun YAOTandong ZHANGGaosen |
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| 作者单位： | [1]ColdandAridRegionsEnvironmentalEngineeringResearchInstitute,ChineseAcademyofSciences,Lanzhou730000,China; [2]SchoolofLifeScience,LanzhouUniversity,Lanzhou730000,China |
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| 基金项目： | National Major Development Program，国家自然科学基金，中国科学院资助项目 |
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| 摘 要： | The research on extrempholic microorganisms in glacial low-temperature environment receives more attention than ever before. Due to the successive chronological records in ice core, it is important to initiate microbiological studies on ice core samples. 23 samples from one ice core,drilled from central Qinghai-Tibetan Plateau, were analyzed.The number of total microorganisms and culturable microorganisms in different layers showed that it related with the content of dust in ice. It is suggested that the distribution of microorganisms in ice depends on the transportation of materials during glacier development. The bacteria diversity in Malan Glacier was analyzed by 16S rDNA sequencing methods, which showed that many sequences were similar to known psychrophilic bacteria.
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| 关 键 词： | 微生物 青藏高原 rDNA 喜寒细菌 低温环境 冰冻层 |
| 收稿时间： | 2002-08-05 |
| 修稿时间： | 2003-01-02 |
Diversity of 16S rDNA and environmental factor influ-encing microorganisms in Malan ice core |
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| ZHANGXiaojun MAXiaojun YAOTandong ZHANGGaosen.Diversity of 16S rDNA and environmental factor influencing microorganisms in Malan ice core[J].Chinese Science Bulletin,2003,48(11):1146-1150. |
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| Authors: | ZHANG Xiaojun Ma Xiaojun YAO Tandong ZHANG Gaosen |
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| Institution: | ZHANG Xiaojun1, MA Xiaojun2, YAO Tandong1 & ZHANG Gaosen2 1. Cold and Arid Regions Environmental Engineering Research Institute, Chinese Academy of Sciences, Lanzhou 730000, China; 2. School of Life Science, Lanzhou University, Lanzhou 730000, China |
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| Abstract: | The research on extrempholic microorganisms in glacial low-temperature environment receives more attention than ever before. Due to the successive chronological records in ice core, it is important to initiate microbiological studies on ice core samples. 23 samples from one ice core, drilled from central Qinghai-Tibetan Plateau, were analyzed. The number of total microorganisms and culturable microorganisms in different layers showed that it related with the content of dust in ice. It is suggested that the distribution of microorganisms in ice depends on the transportation of materials during glacier development. The bacteria diversity in Malan Glacier was analyzed by 16S rDNA sequencing methods, which showed that many sequences were similar to known psychrophilic bacteria. |
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| Keywords: | Qinghai-Tibetan Plateau ice core bacteria 16S rDNA diversity environment |
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