Terug naar overzicht

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

De samenvatting is helaas nog niet in het Nederlands beschikbaar.
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 EC50Nl2+, 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 KNiBL = 5.27 and log KMgBL = 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.

Details

Aantal pagina's 7
Volume 66
Tijdschrift nummer 7
Pagina's (van-tot) 1346-1352
Type A1: Web of Science-artikel
Categorie Onderzoek
Tijdschrift Chemosphere
Issns 0045-6535
Uitgeverij Elsevier
Taal Engels
Bibtex

@misc{b9b999b0-f71e-4ea3-9085-6f1ab899b4e3,
title = "Development of a biotic ligand model (BLM) predicting nickel toxicity to barley (<i>Hordeum vulgare</i>)",
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 EC50Nl2+, 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 KNiBL = 5.27 and log KMgBL = 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.",
author = "Koen Lock and Koen Lock and Hilde Van Eeckhout and K. A. C De Schamphelaere and K. A. C De Schamphelaere and P Criel and P Criel and C. R Janssen and C. R Janssen",
year = "2007",
month = jan,
day = "01",
doi = "https://doi.org/10.1016/j.chemosphere.2006.07.008",
language = "Nederlands",
publisher = "Elsevier",
address = "België,
type = "Other"
}

Auteurs

Koen Lock
Koen Lock
Hilde Van Eeckhout
K. A. C De Schamphelaere
K. A. C De Schamphelaere
P Criel
P Criel
C. R Janssen
C. R Janssen