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  • 1995-1999  (2)
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  • 1
    Electronic Resource
    Electronic Resource
    Detection of tomato mosaic tobamovirus RNA in ancient glacial ice (1999)
    Springer
    Polar biology 22 (1999), S. 207-212 
    Details
    ISSN: 1432-2056
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Tomato mosaic tobamovirus is a very stable plant virus with a wide host range, which has been detected in plants, soil, water, and clouds. Because of its stability and prevalence in the environment, we hypothesized that it might be preserved in ancient ice. We detected tomato mosaic tobamovirus RNA by reverse-transcription polymerase chain reaction amplification in glacial ice subcores 〈500 to approximately 140,000 years old from drill sites in Greenland. Subcores that contained multiple tomato mosaic tobamovirus genotypes suggest diverse atmospheric origins of the virus, whereas those containing tomato mosaic tobamovirus sequences nearly identical to contemporary ones suggest that recent tomato mosaic tobamovirus populations have an extended age structure. Detection of tomato mosaic tobamovirus in ice raises the possibilities that stable viruses of humans and other hosts might be preserved there, and that entrapped ancient viable viruses may be continually or intermittently released into the modern environment.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s003000050411
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Yeast communities associated withDrosophila species and related flies in an eastern oak-pine forest: A comparison with western communities (1995)
    Springer
    Journal of industrial microbiology and biotechnology 14 (1995), S. 484-494 
    Details
    ISSN: 1476-5535
    Keywords: Yeasts ; Drosophila ; Community ecology ; Cacti ; Tree-fluxes
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Summary Intestinal yeast mycobiota were studied in 14 species ofDrosophila and in the drosophilid speciesChymomyza amoena, captured at Pinery Provincial Park, Ontario. Over 56 yeast species, some undescribed, were isolated. These yeast communities were compared with those from two similar surveys conducted in western portions of North America. The community structures were influenced significantly by the habitat rather than phylogeny of the flies. Geographic separation was a factor affecting yeast taxa frequencies in the fly species, but it was largely overshadowed by ecological factors when the communities were described physiologically. The notion that habitats are filled by yeasts which add up to a suitable physiological potential, more or less independently of their taxonomic affinities, was thus confirmed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01573963
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
    Fulltext
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