Linked Life Data

21174999

Source:http://linkedlifedata.com/resource/pubmed/id/21174999

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
7
pubmed:dateCreated
2010-12-22
pubmed:abstractText
A controlled hydroponic experiment was undertaken to investigate Cd uptake in relation to the activity of Cd species in solution other than the free ion (Cd2+) by maintaining a constant Cd2+ activity under variable SO42- and Cl- concentrations exposed to maize (Zea mays var. Cameron) plants. The objectives of these experiments were: (1) to distinguish and quantify the different uptake rates of free and inorganic-complexed Cd from nutrient solution, and (2) to model the uptake of Cd by maize with a Biotic Ligand Model (BLM) in a system which facilitates the close examination of root characteristics. Results of the current experiments suggest that, in addition to the free ion, CdSO4(0) complexes are important factors in determining Cd uptake in nutrient solution by maize plants. Higher nominal SO4(2-) concentrations in solution generally resulted in a greater Cd accumulation by maize plants than predicted by the Cd2+ activity. A better integration of the complete dataset for the 3 harvest times (6, 9 and 11 days after treatment) was achieved by including consideration of both the duration of Cd exposure and especially the root surface area to express Cd uptake. Similarly, the fit of the BLM was also improved when taking into account exposure time and expressing uptake in terms of root morphological parameters.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:issn
1001-0742
pubmed:author
pubmed:issnType
Print
pubmed:volume
22
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
1080-5
pubmed:meshHeading
pubmed:year
2010
pubmed:articleTitle
Modelling sulphate-enhanced cadmium uptake by Zea mays from nutrient solution under conditions of constant free Cd2+ ion activity.
pubmed:affiliation
Division of Environmental Sciences, School of Chemistry, Universidad Autónoma de Nuevo León, 66451, México. ulrico.lopezch@uanl.mx
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't