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  • 1
    Electronic Resource
    Electronic Resource
    Dynamics and Host Influence of Methane Production by Microbial Symbionts in a Lower Termite (1987)
    Oxford, UK : Blackwell Publishing Ltd
    Annals of the New York Academy of Sciences 503 (1987), S. 0 
    Details
    ISSN: 1749-6632
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Natural Sciences in General
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1749-6632.1987.tb40639.x
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  • 2
    Electronic Resource
    Electronic Resource
    Identification and preparation of antiinsectan dienols fromDipterocarpus kerrii tree resins (1991)
    Springer
    Journal of chemical ecology 17 (1991), S. 663-685 
    Details
    ISSN: 1573-1561
    Keywords: Dipterocarpus kerrii ; sesquiterpenes ; chemical synthesis ; dienol ; tropical biology ; termiticide ; Neotermes ; α-gurjunene ; γ-gurjunene ; γ-gurjunenol ; bioassay ; stereochemistry
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract Originally isolated fromDipterocarpus kerrii, the two previously uncharacterized sesquiterpenes,1 and20, were synthesized from α-gurjunene. A novel process involvingm-chloroperoxybenzoic acid oxidation ofα-gurjunene produced20 in one step. Spectroscopic studies determined that the diene moiety in20 is nonconjugated and also found the C-4 tertiary alcohol center to have theα-configuration, while the other stereocenters have configurations matching the corresponding centers inα-gurjunene. Bioassays with termites demonstrated that20 was more toxic than1, resulting in a 50% mortality in seven days when offered toNeotermes ?dalbergiae on filter papers. The chemicals appear to result from biotransformation ofα-gurjunene. In view of its similarity to the known sesquiterpeneγ-gurjunene, we suggest that20 be referred to asγ-gurjunenol.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00982134
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Association of methanogenic bacteria with flagellated protozoa from a termite hindgut (1987)
    Springer
    Current microbiology 15 (1987), S. 337-341 
    Details
    ISSN: 1432-0991
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Abstract Epifluorescence microscopy was used to examine hindgut contents ofZootermopsis angusticollis (Hagen) termites for the presence of methanogenic bacteria, which can be identified on the basis of the fluorescence of the novel cofactors F420 and F350. Small, autofluorescent, rod-shaped bacteria of theMethanobrevibacter sp. morphotype were observed associated with three flagellates tentatively identified asTrichomitopsis termopsidis (Cleveland),Tricercomitus termopsidis Kirby andHexamastix termopsidis Kirby. Methanogens were not observed associated with any other protozoal morphotypes and were not numerous in the free-living state inZ. angusticollis hindgut fluid. Electron micrographs of thin sections of hindgut protozoa suggest methanogens are endosymbionts in the small trichomonad protozoa. Our observations are consistent with the finding of Odelson and Breznak that methane is a minor endproduct of the metabolism of termite gut microbiota.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01577591
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    Paper (German National Licenses)
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