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Biochemical responses to cadmium (Cd2+) and copper (Cu2+) exposure were compared in two strains of the aquatic hyphomycete (AQH) Heliscus lugdunensis. One strain (H4-2-4) had been isolated from a heavy metal polluted site, the other (H8-2-1) from a moderately polluted habitat. Conidia of the two strains differed in shape and size. Intracellular accumulation of Cd2+ and Cu2+ was lower in H4-2-4 than...
Cysteine, glutathione (GSH) and phytochelatins were determined in the cells of both wild and copper tolerant strains of the lichen alga Trebouxia erici following short-term (24 h) exposure to copper and cadmium and long-term (4 weeks) exposure to copper. Both metals caused concentration dependent synthesis of phytochelatins (PC2–PC5), but cadmium was a more potent activator of phytochelatin synthesis,...
The regulation of lipoxygenases (LOX) activity was studied in Arabidopsis thaliana grown under excess Cd and Cu (0.0, 5.0, 50.0 μM) in solution cultures for 7 days. The LOX activity was determined spectrophotometrically at 234 nm in the leaves of mature plants using linoleic and linolenic acids as substrates, while their cellular localization was assessed by immunogold-labelling. The LOX mainly occurred...
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