Document of bibliographic reference 128614

BibliographicReference record

Type

Bibliographic resource

Type of document

Journal article

BibLvlCode

AS

Title

Development of a biotic ligand model (BLM) predicting nickel toxicity to barley (Hordeum vulgare)

Abstract

A biotic ligand model (BLM) was developed to predict nickel toxicity, affecting root growth of barley (Hordeum vulgare), in nutrient solutions. The extent to which Ca²⁺, Mg²⁺, Na⁺, K⁺ ions and pH each influenced nickel toxicity was determined. Higher activities of Mg²⁺ linearly increased the 4 d EC50_Nl²⁺, while Ca²⁺, Na⁺, K⁺ and H⁺ activities did not significantly influence Ni²⁺ toxicity. Stability constants for the binding of Ni²⁺ and Mg²⁺ to the biotic ligand were obtained: log K_NiBL = 5.27 and log K_MgBL = 3.47. Further, it was calculated that on average 57% of the biotic ligand sites needed to be occupied by nickel to induce 50% root growth inhibition. Auto-validation of the BLM indicated that predicted EC50s differed from the observed EC50s by a factor of less than 2, indicating that the BLM concept may also be used to predict metal toxicity to terrestrial plants.

WebOfScience code

https://www.webofscience.com/wos/woscc/full-record/WOS:000244062700024

Bibliographic citation

Lock, K.; Van Eeckhout, H.; De Schamphelaere, K.A.C.; Criel, P.; Janssen, C.R. (2007). Development of a biotic ligand model (BLM) predicting nickel toxicity to barley (Hordeum vulgare). Chemosphere 66(7): 1346-1352. https://dx.doi.org/10.1016/j.chemosphere.2006.07.008

Topic

Fresh water

Is peer reviewed

true