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  • 1990-1994  (2)
  • heavy metals  (2)
  • 3320K
  • 1
    Electronic Resource
    Electronic Resource
    Seasonality of VAM infection in three populations of Agrostis capillaris (Gramineae) on soil with or without heavy metal enrichment (1992)
    Springer
    Plant and soil 139 (1992), S. 67-73 
    Details
    ISSN: 1573-5036
    Keywords: Agrostis capillaris ; heavy metals ; macro- and micro-nutrients ; natural populations ; seasonality ; VAM-infection
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Abstract Three populations of the perennial grass Agrostis capillaris, growing on limestone derived clay with and without natural enrichment of the heavy metals cadmium, lead, and zinc, and on a sandy soil polluted by a metal smelter have been investigated with regard to the percentage and seasonality of infection with vesicular-arbuscular mycorrhizal (VAM) fungi and its impact on mineral nutrition. In all populations VAM infection was lowest during winter, and highest during late summer and autumn. The population at the metal smelter site was less infected by VAM fungi than both other populations. The concentration of mineral nutrients for the three populations was clearly related to the soil concentration, but hardly modified by the degree of VAM infection.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00012843
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    The role of biomarkers in environmental assessment (4). Terrestrial plants (1994)
    Springer
    Ecotoxicology 3 (1994), S. 180-192 
    Details
    ISSN: 1573-3017
    Keywords: adaptation ; damage ; drought ; fluorinated compounds ; heavy metals ; phytochelatins ; proline ; putrescine ; seleno amino acids ; stress
    Source: Springer Online Journal Archives 1860-2000
    Topics: Energy, Environment Protection, Nuclear Power Engineering
    Notes: Abstract The potential of metabolites, enzymatic processes and changes in plant performance as biomarkers in environmental assessment is reviewed. Biomarkers may be used as an early warning system of specific or general stress at each biological level, from molecules to ecosystems. The sensitivity of a species and, thus, the efficiency of a biomarker will depend on the degree of already present adaptation to environmental stress and on the homogeneity of the investigated population. Biomarkers for specific environmental stresses are scarce; better known are biomarkers for environmental stress complexes such as heavy metals, physiological drought and extreme temperature or biomarkers as a reaction on a full scale of environmental stresses. It is argued that a battery of biomarkers is necessary to evaluate chemical hazards to species.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00117083
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
    Fulltext
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