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  • Antagonistic and synergistic effects of light irradiation on the effects of copper on Chlamydomonas reinhardtii.

Antagonistic and synergistic effects of light irradiation on the effects of copper on Chlamydomonas reinhardtii.

Aquatic toxicology (Amsterdam, Netherlands) (2014-07-30)
Giulia Cheloni, Claudia Cosio, Vera I Slaveykova
ABSTRACT

The present study showed the important role of light intensity and spectral composition on Cu uptake and effects on green alga Chlamydomonas reinhardtii. High-intenisty light (HL) increased cellular Cu concentrations, but mitigated the Cu-induced decrease in chlorophyll fluorescence, oxidative stress and lipid peroxidation at high Cu concentrations, indicating that Cu and HL interact in an antagonistic manner. HL up-regulated the transcription of genes involved in the antioxidant response in C. reinhardtii and thus reduced the oxidative stress upon exposure to Cu and HL. Combined exposure to Cu and UVBR resulted in an increase of cellular Cu contents and caused severe oxidative damage to the cells. The observed effects were higher than the sum of the effects corresponding to exposure to UVBR or Cu alone suggesting a synergistic interaction.

MATERIALS
Product Number
Brand
Product Description

Copper, wire reel, 0.2m, diameter 1.0mm, as drawn, 99.99+%
Copper - O.F.H.C., foil, 10mm disks, thickness 0.25mm, annealed, 99.95+%
Copper - O.F.H.C., foil, 20m coil, thickness 0.010mm, coil width 25mm, hard, 99.95+%
Copper - O.F.H.C., foil, 10m coil, thickness 0.1mm, hard, 99.95+%
Copper, tube, 500mm, outside diameter 1.0mm, inside diameter 0.24mm, wall thickness 0.38mm, as drawn, 99.9%
Copper - O.F.H.C., foil, 50mm disks, thickness 0.075mm, half hard, 99.95+%
Copper - O.F.H.C., foil, 2m coil, thickness 0.025mm, hard, 99.95+%
Copper - O.F.H.C., foil, 300x300mm, thickness, 0.5mm, half hard, flattened, 99.95+%
Copper - O.F.H.C., foil, 10mm disks, thickness 0.075mm, half hard, 99.95+%
Copper - O.F.H.C., foil, 20m coil, thickness 0.05mm, coil width 10mm, annealed, 99.95+%
Copper - O.F.H.C., foil, 15mm disks, thickness 0.125mm, hard, 99.95+%
Copper - O.F.H.C., foil, 1m coil, thickness 0.010mm, hard, 99.95+%
Copper - O.F.H.C., foil, 15mm disks, thickness 1.0mm, half hard, 99.95+%
Copper, tube, 500mm, outside diameter 6.0mm, inside diameter 4mm, wall thickness 1.0mm, as drawn, 99.9%
Copper - O.F.H.C., foil, 10mm disks, thickness 0.1mm, hard, 99.95+%
Copper - O.F.H.C., foil, 10m coil, thickness 0.05mm, hard, 99.95+%
Copper - O.F.H.C., foil, 10mm disks, thickness 1.0mm, half hard, 99.95+%
Copper - O.F.H.C., foil, 2m coil, thickness 0.20mm, hard, 99.95+%
Copper - O.F.H.C., foil, 1m coil, thickness 0.1mm, half hard, 99.95+%
Copper, tube, 500mm, outside diameter 2.5mm, inside diameter 1.9mm, wall thickness 0.3mm, as drawn, 99.9%
Copper - O.F.H.C., foil, 15mm disks, thickness 0.25mm, annealed, 99.95+%
Copper - O.F.H.C., foil, 10mm disks, thickness 0.05mm, hard, 99.95+%
Copper - O.F.H.C., foil, 1m coil, thickness 0.05mm, coil width 10mm, annealed, 99.95+%
Copper - O.F.H.C., foil, 25mm disks, thickness 0.025mm, hard, 99.95+%
Copper - O.F.H.C., foil, 4mm disks, thickness 0.025mm, hard, 99.95+%
Copper, wire reel, 100m, diameter 0.025mm, as drawn, 99.99+%
Copper - O.F.H.C., foil, 5m coil, thickness 0.05mm, coil width 300mm, half hard, 99.95+%
Copper - O.F.H.C., foil, 10m coil, thickness 0.125mm, hard, 99.95+%
Copper - O.F.H.C., foil, 25mm disks, thickness 0.7mm, half hard, 99.95+%
Copper - O.F.H.C., foil, 1m coil, thickness 0.1mm, hard, 99.95+%