期刊
ARCHIVES OF MICROBIOLOGY
卷 195, 期 5, 页码 313-322出版社
SPRINGER
DOI: 10.1007/s00203-013-0880-z
关键词
Bacterial diversity; Distribution; Austre Lovenbreen glacier; Marine environment
类别
资金
- National Natural Science Foundation of China [40876097, 40876098, 41076130, 41076131]
- Public Science and Technology Research Funds Projects of Ocean [201105022]
- Chinese Polar Environment Comprehensive Investigation and Assessment Program [CHINARE2012-02-01]
- Youth Marine Science Foundation of State Oceanic Administration [2011104]
Two 16S rRNA gene clone libraries Cores 1U and 2U were constructed using two ice core samples collected from Austre Lov,nbreen glacier in Svalbard. The two libraries yielded a total of 262 clones belonging to 59 phylotypes. Sequences fell into 10 major lineages of the domain Bacteria, including Proteobacteria (alpha, beta, gamma and delta subdivisions), Bacteroidetes, Actinobacteria, Firmicutes, Acidobacteria, Deinococcus-Thermus, Chloroflexi, Planctomycetes, Cyanobacteria and candidate division TM7. Among them, Bacteroidetes, Actinobacteria, Alphaproteobacteria and Cyanobacteria were most abundant. UniFrac data showed no significant differences in community composition between the two ice cores. A total of nineteen bacterial strains from the genera Pseudoalteromonas and Psychrobacter were isolated from the ice cores. Phylogenetic and phenotypic analyses revealed a close relationship between the ice core isolates and bacteria in marine environments, indicating a wide distribution of some bacterial phylotypes in both terrestrial and marine ecosystems.
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