• Publications
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Fungi in freshwaters: ecology, physiology and biochemical potential.
Research on freshwater fungi has concentrated on their role in plant litter decomposition in streams. Higher fungi dominate over bacteria in terms of biomass, production and enzymatic substrateExpand
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TolC is involved in enterobactin efflux across the outer membrane of Escherichia coli.
Escherichia coli excretes the catecholate siderophore enterobactin in response to iron deprivation. While the mechanisms underlying enterobactin biosynthesis and ferric enterobactin uptake andExpand
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Interaction of heavy metals with the sulphur metabolism in angiosperms from an ecological point of view.
The metabolism of sulphur in angiosperms is reviewed under the aspect of exposure to ecologically relevant concentrations of sulphur, heavy metals and metalloids. Because of the inconsistent use ofExpand
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Glutathione and transition-metal homeostasis in Escherichia coli.
Glutathione (GSH) and its derivative phytochelatin are important binding factors in transition-metal homeostasis in many eukaryotes. Here, we demonstrate that GSH is also involved in chromate,Expand
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The use of Fontinalis antipyretica L. ex Hedw. as a bioindicator for heavy metals. 2. Heavy metal accumulation and physiological reaction of Fontinalis antipyretica L. ex Hedw. in active
Abstract The aquatic moss Fontinalis antipyretica was studied for its ability to accumulate heavy metals. In an exposure test in the River Elbe it was possible to detect an accumulation of heavyExpand
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Cadmium induces a novel metallothionein and phytochelatin 2 in an aquatic fungus.
Cadmium stress response was measured at the thiol peptide level in an aquatic hyphomycete (Heliscus lugdunensis). In liquid culture, 0.1 mM cadmium increased the glutathione (GSH) content and inducedExpand
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Decomposition of alder leaves in two heavy metal-polluted streams in central Germany
In the former copper shale mining district of Mansfeld, central Germany, weathering of slag heaps and dumps resulted in groundwater, lakes and streams with extremely high heavy metal and metalloidExpand
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Induction of an extracellular cyclic nucleotide phosphodiesterase as an accessory ribonucleolytic activity during phosphate starvation of cultured tomato cells.
During growth under conditions of phosphate limitation, suspension-cultured cells of tomato (Lycopersicon esculentum Mill.) secrete phosphodiesterase activity in a similar fashion to phosphateExpand
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Biochemical responses of the aquatic moss Fontinalis antipyretica to Cd, Cu, Pb and Zn determined by chlorophyll fluorescence and protein levels
Abstract Biochemical reactions to Cu, Cd, Zn and Pb in the aquatic moss Fontinalis antipyretica were studied in order to characterize the physiological background of the metal response. ChlorophyllExpand
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Aquatic hyphomycete communities as potential bioindicators for assessing anthropogenic stress.
With a profound knowledge of how physico-chemical parameters affect these communities, microbial communities could be used as indicators for environmental changes and for risk assessment studies. WeExpand
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