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DOI | 10.5194/bg-7-1937-2010 |
Differences in community composition of bacteria in four glaciers in western China | |
An, L. Z.; Chen, Y.; Xiang, S. -R.; Shang, T. -C.; Tian, L. -D. | |
通讯作者 | Xiang, SR (通讯作者) |
发表日期 | 2010 |
ISSN | 1726-4170 |
EISSN | 1726-4189 |
起始页码 | 1937 |
结束页码 | 1952 |
卷号 | 7期号:6 |
英文摘要 | Microbial community patterns vary in glaciers worldwide, presenting unique responses to global climatic and environmental changes. Four bacterial clone libraries were established by 16S rRNA gene amplification from four ice layers along the 42-m-long ice core MuztB drilled from the Muztag Ata Glacier. A total of 151 bacterial sequences obtained from the ice core MuztB were phylogenetically compared with the 71 previously reported sequences from three ice cores extracted from ice caps Malan, Dunde, and Puruogangri. Six phylogenetic clusters Flavisolibacter, Flexibacter (Bacteroidetes), Acinetobacter, Enterobacter (Gammaproteobacteria), Planococcus/Anoxybacillus (Firmicutes), and Propionibacter/Luteococcus (Actinobacteria) frequently occurred along the Muztag Ata Glacier profile, and their proportion varied by seasons. Sequence analysis showed that most of the sequences from the ice core clustered with those from cold environments, and the sequence clusters from the same glacier more closely grouped together than those from the geographically isolated glaciers. Moreover, bacterial communities from the same location or similarly aged ice formed a cluster, and were clearly separate from those from other geographically isolated glaciers. In summary, the findings provide preliminary evidence of zonal distribution of microbial community, and suggest biogeography of microorganisms in glacier ice. |
关键词 | RIBOSOMAL-RNA GENESICE COREANNEALING TEMPERATUREMICROBIAL DIVERSITYAIR-TEMPERATUREPRIMER MISMATCHRECA PROTEINCOPY NUMBERBIASSNOW |
语种 | 英语 |
WOS研究方向 | Environmental Sciences & Ecology ; Geology |
WOS类目 | Ecology ; Geosciences, Multidisciplinary |
WOS记录号 | WOS:000279390700008 |
来源期刊 | BIOGEOSCIENCES
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来源机构 | 中国科学院青藏高原研究所 |
文献类型 | 期刊论文 |
条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/257802 |
推荐引用方式 GB/T 7714 | An, L. Z.,Chen, Y.,Xiang, S. -R.,et al. Differences in community composition of bacteria in four glaciers in western China[J]. 中国科学院青藏高原研究所,2010,7(6). |
APA | An, L. Z.,Chen, Y.,Xiang, S. -R.,Shang, T. -C.,&Tian, L. -D..(2010).Differences in community composition of bacteria in four glaciers in western China.BIOGEOSCIENCES,7(6). |
MLA | An, L. Z.,et al."Differences in community composition of bacteria in four glaciers in western China".BIOGEOSCIENCES 7.6(2010). |
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