COPPER TOXICITY TO SKELETONEMA COSTATUM (BACILLARIOPHYCEAE)

N. M.L. Morel; J. C. Rueter; Francois M. M. Morel

doi:10.1111/j.1529-8817.1978.tb00629.x

COPPER TOXICITY TO SKELETONEMA COSTATUM (BACILLARIOPHYCEAE)

N. M.L. Morel, J. C. Rueter, Francois M. M. Morel

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88 Scopus citations

Abstract

Copper toxicity to Skeletonema costatum (Grev.) Cleve has been studied in batch cultures of chemically defined culture media. The alga is relatively insensitive to cupric ion activity, demonstrating no effect on growth up to (Cu²⁺) = 10^−8.5 M. Cultures inoculated from stationary phase stocks exhibit a prolongation of the lag phase with increasing copper concentrations near and above the point of precipitation of the copper. The toxicity of copper is a function of the silicic acid concentration in the medium. This effect is observed in a range of Si(OH)₄ concentrations (10⁻⁵ M to 10⁻⁴ M) above known values for the saturation of silicon uptake kinetics, thus suggesting an influence of copper on silicate metabolism.

Original language	English (US)
Pages (from-to)	43-48
Number of pages	6
Journal	Journal of Phycology
Volume	14
Issue number	1
DOIs	https://doi.org/10.1111/j.1529-8817.1978.tb00629.x
State	Published - Mar 1978

All Science Journal Classification (ASJC) codes

Aquatic Science
Plant Science

Keywords

Skeletonema
copper
cupric ion
lag phase
silicic acid
silicon
toxicity

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10.1111/j.1529-8817.1978.tb00629.x

Cite this

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abstract = "Copper toxicity to Skeletonema costatum (Grev.) Cleve has been studied in batch cultures of chemically defined culture media. The alga is relatively insensitive to cupric ion activity, demonstrating no effect on growth up to (Cu2+) = 10−8.5 M. Cultures inoculated from stationary phase stocks exhibit a prolongation of the lag phase with increasing copper concentrations near and above the point of precipitation of the copper. The toxicity of copper is a function of the silicic acid concentration in the medium. This effect is observed in a range of Si(OH)4 concentrations (10−5 M to 10−4 M) above known values for the saturation of silicon uptake kinetics, thus suggesting an influence of copper on silicate metabolism.",

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AU - Rueter, J. C.

AU - Morel, Francois M. M.

PY - 1978/3

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N2 - Copper toxicity to Skeletonema costatum (Grev.) Cleve has been studied in batch cultures of chemically defined culture media. The alga is relatively insensitive to cupric ion activity, demonstrating no effect on growth up to (Cu2+) = 10−8.5 M. Cultures inoculated from stationary phase stocks exhibit a prolongation of the lag phase with increasing copper concentrations near and above the point of precipitation of the copper. The toxicity of copper is a function of the silicic acid concentration in the medium. This effect is observed in a range of Si(OH)4 concentrations (10−5 M to 10−4 M) above known values for the saturation of silicon uptake kinetics, thus suggesting an influence of copper on silicate metabolism.

AB - Copper toxicity to Skeletonema costatum (Grev.) Cleve has been studied in batch cultures of chemically defined culture media. The alga is relatively insensitive to cupric ion activity, demonstrating no effect on growth up to (Cu2+) = 10−8.5 M. Cultures inoculated from stationary phase stocks exhibit a prolongation of the lag phase with increasing copper concentrations near and above the point of precipitation of the copper. The toxicity of copper is a function of the silicic acid concentration in the medium. This effect is observed in a range of Si(OH)4 concentrations (10−5 M to 10−4 M) above known values for the saturation of silicon uptake kinetics, thus suggesting an influence of copper on silicate metabolism.

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KW - toxicity

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COPPER TOXICITY TO SKELETONEMA COSTATUM (BACILLARIOPHYCEAE)

Abstract

All Science Journal Classification (ASJC) codes

Keywords

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