Diversity of 16S rDNA and environmental factor influncing microorganisms in Malan ice core |
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| Authors: | Xiaojun Zhang Xiaojun Ma Tandong Yao Gaosen Zhang |
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| Institution: | 1.Cold and Arid Regions Environmental Engineering Research Institute,Chinese Academy of Sciences,Lanzhou,China;2.School of Life Science,Lanzhou University,Lanzhou,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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