Influence of calcium, magnesium, sodium, potassium and pH on copper toxicity to barley (Hordeum vulgare)

Bibtex

@misc{568331a7-3a99-4b08-bd36-3f61e424c6db,
title = "Influence of calcium, magnesium, sodium, potassium and pH on copper toxicity to barley (<i>Hordeum vulgare</i>)",
abstract = "The extent to which Ca²⁺, Mg²⁺, Na⁺, K⁺ ions and pH independently influence copper toxicity to barley (Hordeum vulgare) was assessed by measuring root growth in nutrient solutions. Increased Ca²⁺ activity resulted in a sixfold decrease in EC50_Cu²⁺ values, while a positive relationship between the cation activity and the EC50 was expected. Increased Mg²⁺ activity resulted in a twofold increase in EC50_Cu²⁺ values. Na⁺, K⁺ and H⁺ activities did not significantly affect Cu²⁺ toxicity. The obtained results indicated that competition for binding sites between Cu²⁺ and cations such as Ca²⁺, Mg²⁺, Na⁺, K⁺ and H⁺ is not an important factor in determining Cu²⁺ toxicity to H. vulgare. However, the EC50s could, with one exception, be predicted within a factor three based on the free Cu²⁺ activity, indicating that the free Cu²⁺ activity cannot only be used to predict metal toxicity to aquatic, but also to terrestrial organisms.",
author = "Koen Lock and Koen Lock and P Criel and P Criel and K. A. C De Schamphelaere and K. A. C De Schamphelaere and Hilde Van Eeckhout and C. R Janssen and C. R Janssen",
year = "2007",
month = jan,
day = "01",
doi = "https://doi.org/10.1016/j.ecoenv.2006.11.014",
language = "Nederlands",
publisher = "Elsevier",
address = "België,
type = "Other"
}

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