Isolation of fungi from Lake Vostok accretion ice

@article{Delia2009IsolationOF,
  title={Isolation of fungi from Lake Vostok accretion ice},
  author={Tom D’elia and Ram Veerapaneni and Vincent Theraisnathan and Scott O. Rogers},
  journal={Mycologia},
  year={2009},
  volume={101},
  pages={751 - 763}
}
Here we report the characterization of fungi from 10 accretion ice sections (3300–5100 y old) as well as two deep glacial ice sections that are close to the bottom of the glacier (1 000 000–2 000 000 y old) from the Vostok, Antarctica, 5G ice core. Fungi were characterized by fluorescence microscopy culturing and sequence analyses of ribosomal DNA internal transcribed spacers. A total of 270 fungal colonies were cultured from the accretion ice of subglacial Lake Vostok and an additional 14 from… Expand
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References

SHOWING 1-10 OF 52 REFERENCES
Revival and characterization of fungi from ancient polar ice
TLDR
The aim of this research was to revive and/or characterize fungi and fungal DNA entrapped in ancient ice cores from Greenland, and DNA sequences derived directly from ice melt resembled those of contemporary species, while others exhibited little similarity to well-characterized present-day fungi. Expand
Microorganisms in the accreted ice of Lake Vostok, Antarctica.
TLDR
Analysis of accreted ice data suggest that Lake Vostok may contain viable microorganisms, and at least a portion of the microbial assemblage was viable, as determined by the respiration of carbon-14-labeled acetate and glucose substrates during incubations at 3 degrees C and 1 atmosphere. Expand
Microbiological Characterization of the Accreted Ice of Subglacial Lake Vostok, Antarctica
TLDR
It is suggested that the microorganisms found in the lake ice may come from different locations—the bottom layer of the glacier ice, the bedrock underlying the glacier, and the lake water. Expand
Detection and characterization of ancient fungi entrapped in glacial ice
TLDR
The results from this study may facilitate the future use of ancient fungi in studies of fungal ecol- ogy, distribution, epidemiology, phylogeny, and evo- lution. Expand
The hydrochemistry of Lake Vostok and the potential for life in Antarctic subglacial lakes
Our understanding of Lake Vostok, the huge subglacial lake beneath the East Antarctic Ice Sheet, has improved recently through the identification of key physical and chemical interactions between theExpand
Physical, chemical and biological processes in Lake Vostok and other Antarctic subglacial lakes
TLDR
Analysis of lake ice frozen to the underside of the ice sheet above Lake Vostok, the largest of these lakes, has allowed inferences to be made on lake water chemistry and has revealed small quantities of microbes, suggesting that Lake Vstok is an extreme, yet viable, environment for life. Expand
DNA signature of thermophilic bacteria from the aged accretion ice of Lake Vostok, Antarctica: implications for searching for life in extreme icy environments
We have used 16S ribosomal genes to estimate the bacterial contents of Lake Vostok accretion ice samples at 3551 m and 3607 m, both containing sediment inclusions and formed 20000–15000 yr ago.Expand
Geomicrobiology of subglacial ice above Lake Vostok, Antarctica.
TLDR
Bacterial 16S ribosomal DNA genes revealed low diversity in the gene population, and phylotypes were closely related to extant members of the alpha- and beta-Proteobacteria and the Actinomycetes. Expand
Contributions of an ancient evaporitic-type reservoir to subglacial Lake Vostok chemistry
Abstract We present here the first comprehensive study of the chemical composition of accretion ice from Lake Vostok. Ion chromatographic analyses were performed on samples obtained along the deeperExpand
Penicillium Mycobiota in Arctic Subglacial Ice
TLDR
This is the first report on the presence of large populations of Penicillium spp. Expand
...
1
2
3
4
5
...