Document of bibliographic reference 128605

BibliographicReference record

Type

Bibliographic resource

Type of document

Journal article

BibLvlCode

AS

Title

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

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.

WebOfScience code

https://www.webofscience.com/wos/woscc/full-record/WOS:000250321100011

Bibliographic citation

Lock, K.; Criel, P.; De Schamphelaere, K.A.C.; Van Eeckhout, H.; Janssen, C.R. (2007). Influence of calcium, magnesium, sodium, potassium and pH on copper toxicity to barley (Hordeum vulgare). Ecotoxicol. Environ. Saf. 68(2): 299-304. https://dx.doi.org/10.1016/j.ecoenv.2006.11.014

Topic

Fresh water

Is peer reviewed

true