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  • 1
    Electronic Resource
    Electronic Resource
    A practicable and accurate method to differentiate between intra- and extracellular water of microbial cells (1999)
    Oxford, UK : Blackwell Publishing Ltd
    FEMS microbiology letters 178 (1999), S. 0 
    Details
    ISSN: 1574-6968
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: A thermographimetric method which allows for a quick and accurate estimation of intra- and extracellular water of microbial cells is reviewed and improved. Knowledge of these fractions is important for physiological as well as for toxicological investigations. Results of the study indicate that besides the species, nutrient availability and growth conditions affect the intracellular water content. Intra- and extracellular water, dry matter, volume and density of a single cell of Arthrobacter sp. are calculated. There are indications that intracellular compartments of eukaryotes could also be investigated with this method.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1574-6968.1999.tb13769.x
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Influence of nutrient solution on Al-tolerance of Pseudomonas sp. (1999)
    Oxford, UK : Blackwell Publishing Ltd
    FEMS microbiology letters 170 (1999), S. 0 
    Details
    ISSN: 1574-6968
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: Using a soil bacterium (Pseudomonas sp.), the influence of different levels of aluminium included in nutrient solutions before and after autoclaving and the influence of phosphorus addition on growth of the bacterium were investigated. Both phosphorus addition (350 μM) and Al-application before autoclaving caused a distinct decrease in Al-availability and thus an apparent increase in Al-tolerance, both effects adding up in a linear fashion. The Weibull function was shown to be well suited to describe toxic effects of Al on the microorganism under investigation.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1574-6968.1999.tb13373.x
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Influence of aluminum on motility and swarming of Pseudomonas sp. and Arthrobacter sp. (1997)
    Oxford, UK : Blackwell Publishing Ltd
    FEMS microbiology letters 155 (1997), S. 0 
    Details
    ISSN: 1574-6968
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: The effect of Al on the motility and the swarming of Pseudomonas sp. and Arthrobacter sp. was investigated. pH calibration curves were determined in semi-solid agar which enabled us to distinguish between the effects of aluminum and protons. Motility of the bacteria was distinctly influenced by Al but this effect could be attributed to the increased acidity accompanying Al addition. The swarming of Pseudomonas sp. is reported for the first time. The swarming ability decreased with both Al and HCl addition to the medium but the obstruction due to aluminum was significantly stronger than the influence of HCl.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1574-6968.1997.tb12695.x
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    Effects of lime and nutrient salts on the microbiological activities of forest soils (1991)
    Springer
    Biology and fertility of soils 11 (1991), S. 261-266 
    Details
    ISSN: 1432-0789
    Keywords: Forest soil ; Fertilization ; Enzymes ; Lime ; Amelioration ; Microbial biomass ; Protease activity ; Phosphatase activity
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Geosciences , Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary In pot experiments, lime and mineral salts were applied to forest soils taken from three different sites. Microbial biomass, basal respiration, N turnover, and the activities of protease, phosphatase, and CM-cellulase were determined monthly. The fertilized soils showed a great increase in biomass, respiration and N turnover, and some increase in protease activity, whereas phosphatase activity decreased in comparison with the untreated soils. Estimates of the number of colony-forming units of different classes of microorganisms showed an increase in treated soils in most cases. The untreated soils had the lowest biological activity but the maximum application of lime and mineral salts did not automatically lead to maximum activity.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00335845
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    Paper (German National Licenses)
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