Characteristic microbial communities in the continuous permafrost beside the bitumen in Qinghai-Tibetan Plateau

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• 作者：Nan Jiang ; Yang Li ; Chenggang Zheng ; Lijun Chen ; Kai Wei…
• 关键词：Microbial communities ; Permafrost ; Pyrosequencing ; Qinghai ; Tibetan Plateau
• 刊名：Environmental Earth Sciences
• 出版年：2015
• 出版时间：July 2015
• 年：2015
• 卷：74
• 期：2
• 页码：1343-1352
• 全文大小：701 KB
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• 作者单位：Nan Jiang (1)
  Yang Li (2)
  Chenggang Zheng (3)
  Lijun Chen (1)
  Kai Wei (1)
  Jiao Feng (1)
  Jihui Tian (1)
  
  1. State Key Laboratory of Forest and Soil Ecology, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang, 110016, China
  2. Tianjin Institute of Industrial Biotechnology, Chinese Academy of Sciences, Tianjin, 300308, China
  3. Petroleum Exploration and Production Research Institute, Sinopec, Beijing, 100083, China
  
• 刊物类别：Earth and Environmental Science
• 刊物主题：None Assigned
• 出版者：Springer Berlin Heidelberg
• ISSN：1866-6299

文摘

Although research on microorganisms in the global ecosystem has considerably increased, there is still incomplete understanding of the microbial communities in alpine permafrost due to the inaccessibility. In this study, the microbial composition and diversity in the continuous permafrost beside the bitumen in the Qiangtang basin (CPBQ) was investigated by 454 pyrosequencing. Among the bacterial communities, the phylum Actinobacteria was dominant, ranging from 33.42 to 48.04?%, followed by Proteobacteria and Acidobacteria. In addition to the three characteristic phyla, Planctomycetes, Chloroflexi, and Nitrospirae were also important in the CPBQ. Crenarchaeota, especially the ammonia-oxidizing archaea Soil Crenarchaeotic Group (SCG), was the main archaea in the CPBQ. Moreover, four fungal phyla, Ascomycota, Mucoromycotina, Chytridiomycota and Glomeromycota, were detected in the CPBQ. Mortierella, Fusarium, and Tetracladium were the main genera. On the average, the proportion of No_rank and unclassified sequences in bacteria and fungi were high at low taxonomic levels, which could extend the list of extreme environmental microbial candidate divisions. The demonstrations of the microbial communities in the CPBQ could provide key data to improve the knowledge of microbes in the terrestrial extreme environments.