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学科主题: 地理学::自然地理学
题名: Changes of the Bacterial Abundance and Communities in Shallow Ice Cores from Dunde and Muztagata Glaciers, Western China
作者: Chen, Y (Chen, Yong)1; Li, XK (Li, Xiang-Kai)1; Si, J (Si, Jing)2; Wu, GJ (Wu, Guang-Jian)3, 4; Tian, LD (Tian, Li-De)3, 4; Xiang, SR (Xiang, Shu-Rong)1, 3, 4
通讯作者: Xiang, SR
关键词: TIBETAN PLATEAU ; SP-NOV ; HERBASPIRILLUM-HUTTIENSE ; COMB. NOV. ; DUST ; ANTARCTICA ; DIVERSITY ; GREENLAND ; RECORD ; RECLASSIFICATION
刊名: FRONTIERS IN MICROBIOLOGY
发表日期: 2016
DOI: 10.3389/fmicb.2016.01716
卷: 7, 期:0, 页:1716
收录类别: SCI
合作性质: 国内
文章类型: Article
部门归属: 环境
英文摘要: In this study, six bacterial community structures were analyzed from the Dunde ice core (9.5-m-long) using 16S rRNA gene cloning library technology. Compared to the Murtagata mountain ice core (37-m-long), the Dunde ice core has different dominant community structures, with five genus-related groups Blastococcus sp./Propionibactenum, Cryobacterium-related., Flavobacterium sp., Pedobacter sp., and Polaromas sp. that are frequently found in the six tested ice layers from 1990 to 2000. Live and total microbial density patterns were examined and related to the dynamics of physical-chemical parameters, mineral particle concentrations, and stable isotopic ratios in the precipitations collected from both Murtagata and Dunde ice cores. The Murtagata ice core revealed seasonal response patterns for both live and total cell density, with high cell density occurring in the warming spring and summer months indicated by the proxy value of the stable isotopic ratios. Seasonal analysis of live cell density for the Dunde ice core was not successful due to the limitations of sampling resolution. Both ice cores showed that the cell density peaks were frequently associated with high concentrations of particles. A comparison of microbial communities in the Dunde and Murtagata glaciers showed that similar taxonomic members exist in the related ice cores, but the composition of the prevalent genus-related groups is largely different between the two geographically different glaciers. This indicates that the micro biogeography associated with geographic differences was mainly influenced by a few dominant taxonomic groups.
语种: 英语
WOS记录号: WOS:000388646700002
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.itpcas.ac.cn/handle/131C11/7506
Appears in Collections:图书馆_期刊论文

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作者单位: 1.Lanzhou Univ, Sch Life Sci, Lanzhou, Peoples R China
2.Chinese Acad Sci, Inst Modern Phys, Lanzhou, Peoples R China
3.Chinese Acad Sci, Inst Tibetan Plateau Res, Key Lab Tibetan Environm Changes & Land Surface P, Beijing, Peoples R China
4.Chinese Acad Sci, Lab Ice Core & Cod Reg Environm, Cold & Arid Reg Environm & Engn Res Inst, Lanzhou, Peoples R China

Recommended Citation:
Chen, Y ,Li, XK ,Si, J ,et al. Changes of the Bacterial Abundance and Communities in Shallow Ice Cores from Dunde and Muztagata Glaciers, Western China[J]. FRONTIERS IN MICROBIOLOGY,2016,7(0):1716.
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