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  • 1
    Electronic Resource
    Electronic Resource
    Evidence for microfloral succession on allochthonous plant litter in Apalachicola Bay, Florida, USA (1977)
    Springer
    Marine biology 41 (1977), S. 229-240 
    Details
    ISSN: 1432-1793
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Changes in hydrolytic, respiratory,catabolic and lipid biosynthetic activities depend at least in part on successional changes in the microfloral populations of allochthonous plant litter incubated in a semi-tropical estuary. Initial colonization is by populations which have a high content of muramic acid relative to the adenosine triphosphate (ATP) and which are progressively displaced by a microflora with a lower ratio of muramic acid to ATP. Scanning electron micrography of the plant-litter microflora shows a succession of forms, with an initial bacterial colonization and its progressive displacement by more complex forms. Estimates of the microbial mass and the rates of phospholipid synthesis suggest that the detrital microflora has a relatively slow growth rate compared to its growth potential.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00394909
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    FURTHER STUDIES ON BACTERIAL ENDOSPORE GERMINATION RELATIVE TO AUTO-INHIBITION (1957)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of food science 22 (1957), S. 0 
    Details
    ISSN: 1750-3841
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Process Engineering, Biotechnology, Nutrition Technology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2621.1957.tb17027.x
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Enamel Cuticle (Nasmyth's Membrane) and Tartar Deposition in the Ferret (1945)
    [s.l.] : Nature Publishing Group
    Nature 156 (1945), S. 572-573 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] A FORM of parodontal disease has been previously described, in which the initial lesion of the gum was caused by the impingement and eventual penetration of salivary calculus1,2. Both tartar deposition and gingival disease were prevented by including in the diet short lengths of ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/156572b0
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    Determination of the sedimentary microbial biomass by extractible lipid phosphate (1979)
    Springer
    Oecologia 40 (1979), S. 51-62 
    Details
    ISSN: 1432-1939
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary The measurement of lipid phosphate is proposed as an indicator of microbial biomass in marine and estuarine sediments. This relatively simple assay can be performed on fresh, frozen or frozen-lyophilized sediment samples with chloroform methanol extraction and subsequent phosphate determination. The sedimentary lipid phosphate recovery correlates with the extractible ATP and the rate of DNA synthesis. Pulse-chase experiments show active metabolism of the sedimentary phospholipids. The recovery of added 14C-labeled bacterial lipids from sediments is quantitative. Replicate analyses from a single sediment sample gave a standard deviation of 11%. The lipid extract can be fractionated by relatively simple procedures and the plasmalogen, diacyl phospholipid, phosphonolipid and non-hydrolyzable phospholipid content determined. The relative fatty acid composition can be readily determined by gas-liquid chromatography. The lipid composition can be used to define the microbial community structure. For example, the absence of polyenoic fatty acids indicates minimal contamination with benthic micro-eukaryotes. Therefore the high content of plasmalogen phospholipids in these sediments suggests that the anaerobic prokaryotic Clostridia are found in the aerobic sedimentary horizon. This would require anaerobic microhabitats in the aerated zones.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00388810
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    Paper (German National Licenses)
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