PoplarV1, Main, Exploration, bibRecord, 003073

The speciation of water-soluble Al and Zn in the rhizosphere of forest soils.

Identifieur interne : 003073 ( Main/Exploration ); précédent : 003072; suivant : 003074

The speciation of water-soluble Al and Zn in the rhizosphere of forest soils.

Auteurs : Benoît Cloutier-Hurteau [France] ; Marie-Claude Turmel ; Sébastien Sauvé ; François Courchesne

Source :

Journal of environmental monitoring : JEM [ 1464-0333 ] ; 2010.

RBID : pubmed:20383395

Descripteurs français

KwdFr :
- Aluminium (analyse), Aluminium (composition chimique), Aluminium (métabolisme), Analyse multifactorielle (MeSH), Arbres (MeSH), Microbiologie du sol (MeSH), Polluants du sol (analyse), Polluants du sol (composition chimique), Polluants du sol (métabolisme), Rhizome (MeSH), Sol (analyse), Surveillance de l'environnement (MeSH), Zinc (analyse), Zinc (composition chimique), Zinc (métabolisme).
MESH :
- analyse : Aluminium, Polluants du sol, Sol, Zinc.
- composition chimique : Aluminium, Polluants du sol, Zinc.
- métabolisme : Aluminium, Polluants du sol, Zinc.
- Analyse multifactorielle, Arbres, Microbiologie du sol, Rhizome, Surveillance de l'environnement.

English descriptors

KwdEn :
- Aluminum (analysis), Aluminum (chemistry), Aluminum (metabolism), Environmental Monitoring (MeSH), Multivariate Analysis (MeSH), Rhizome (MeSH), Soil (analysis), Soil Microbiology (MeSH), Soil Pollutants (analysis), Soil Pollutants (chemistry), Soil Pollutants (metabolism), Trees (MeSH), Zinc (analysis), Zinc (chemistry), Zinc (metabolism).
MESH :
- chemical , analysis : Aluminum, Soil, Soil Pollutants, Zinc.
- chemical , chemistry : Aluminum, Soil Pollutants, Zinc.
- chemical , metabolism : Aluminum, Soil Pollutants, Zinc.
- Environmental Monitoring, Multivariate Analysis, Rhizome, Soil Microbiology, Trees.

Abstract

This study focuses on the relationships of dissolved Al and Zn speciation with microbial and chemical soil properties in the bulk and rhizosphere of forest soils. The soil components were sampled under Populus tremuloides Michx. at six sites located close to industrial facilities. Total water-soluble (Al(WS), Zn(WS)) and reactive (Al(R), Zn(R)) Al and Zn concentrations measured in soil water extracts, speciation data modeled by WHAM 6, chemical properties (pH, DOC, major cations and anions) and microbial properties (microbial biomass and enzyme activities) were measured on all soils. Enrichment in Al(R) and Zn(R) was observed in the rhizosphere compared to bulk soils. In a given soil material, the speciation of Al and Zn varied according to solution pH and Al-organic as well as Zn-organic complexes or Zn(2+) were generally the dominant species. The factors controlling the Al(WS), Zn(WS), Al(R) and Zn(R) concentrations differed between soil components, shifting from strictly chemical in the bulk (78%) to interactions among microbial and chemical variables in the rhizosphere (87%). Results further indicate that organic matter and pH were significantly linked to these response variables in the rhizosphere. Involvement of rhizospheric microorganisms occurred via pH changes induced by either the microbial assimilation of nitrogen or through the release of metals during the mineralization of roots. Our results therefore suggest that microbial activity is an important component of the biogeochemistry of Al and Zn in the rhizosphere. The study further provides key information to improve the assessment of ecological risk associated to Al and Zn in forest soils.

DOI: 10.1039/c002497j
PubMed: 20383395

Affiliations:

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Le document en format XML

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<affiliation wicri:level="3"><nlm:affiliation>UMR Eco&Sols (INRA-IRD-SupAgro-CIRAD), Bâtiment 12, 2 place Pierre Viala, 34060, Montpellier Cedex 2, France.</nlm:affiliation>
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<author><name sortKey="Courchesne, Francois" sort="Courchesne, Francois" uniqKey="Courchesne F" first="François" last="Courchesne">François Courchesne</name>
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<term>Environmental Monitoring (MeSH)</term>
<term>Multivariate Analysis (MeSH)</term>
<term>Rhizome (MeSH)</term>
<term>Soil (analysis)</term>
<term>Soil Microbiology (MeSH)</term>
<term>Soil Pollutants (analysis)</term>
<term>Soil Pollutants (chemistry)</term>
<term>Soil Pollutants (metabolism)</term>
<term>Trees (MeSH)</term>
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<term>Zinc (metabolism)</term>
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<term>Analyse multifactorielle (MeSH)</term>
<term>Arbres (MeSH)</term>
<term>Microbiologie du sol (MeSH)</term>
<term>Polluants du sol (analyse)</term>
<term>Polluants du sol (composition chimique)</term>
<term>Polluants du sol (métabolisme)</term>
<term>Rhizome (MeSH)</term>
<term>Sol (analyse)</term>
<term>Surveillance de l'environnement (MeSH)</term>
<term>Zinc (analyse)</term>
<term>Zinc (composition chimique)</term>
<term>Zinc (métabolisme)</term>
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<term>Zinc</term>
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<term>Multivariate Analysis</term>
<term>Rhizome</term>
<term>Soil Microbiology</term>
<term>Trees</term>
</keywords>
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<front><div type="abstract" xml:lang="en">This study focuses on the relationships of dissolved Al and Zn speciation with microbial and chemical soil properties in the bulk and rhizosphere of forest soils. The soil components were sampled under Populus tremuloides Michx. at six sites located close to industrial facilities. Total water-soluble (Al(WS), Zn(WS)) and reactive (Al(R), Zn(R)) Al and Zn concentrations measured in soil water extracts, speciation data modeled by WHAM 6, chemical properties (pH, DOC, major cations and anions) and microbial properties (microbial biomass and enzyme activities) were measured on all soils. Enrichment in Al(R) and Zn(R) was observed in the rhizosphere compared to bulk soils. In a given soil material, the speciation of Al and Zn varied according to solution pH and Al-organic as well as Zn-organic complexes or Zn(2+) were generally the dominant species. The factors controlling the Al(WS), Zn(WS), Al(R) and Zn(R) concentrations differed between soil components, shifting from strictly chemical in the bulk (78%) to interactions among microbial and chemical variables in the rhizosphere (87%). Results further indicate that organic matter and pH were significantly linked to these response variables in the rhizosphere. Involvement of rhizospheric microorganisms occurred via pH changes induced by either the microbial assimilation of nitrogen or through the release of metals during the mineralization of roots. Our results therefore suggest that microbial activity is an important component of the biogeochemistry of Al and Zn in the rhizosphere. The study further provides key information to improve the assessment of ecological risk associated to Al and Zn in forest soils.</div>
</front>
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<Abstract><AbstractText>This study focuses on the relationships of dissolved Al and Zn speciation with microbial and chemical soil properties in the bulk and rhizosphere of forest soils. The soil components were sampled under Populus tremuloides Michx. at six sites located close to industrial facilities. Total water-soluble (Al(WS), Zn(WS)) and reactive (Al(R), Zn(R)) Al and Zn concentrations measured in soil water extracts, speciation data modeled by WHAM 6, chemical properties (pH, DOC, major cations and anions) and microbial properties (microbial biomass and enzyme activities) were measured on all soils. Enrichment in Al(R) and Zn(R) was observed in the rhizosphere compared to bulk soils. In a given soil material, the speciation of Al and Zn varied according to solution pH and Al-organic as well as Zn-organic complexes or Zn(2+) were generally the dominant species. The factors controlling the Al(WS), Zn(WS), Al(R) and Zn(R) concentrations differed between soil components, shifting from strictly chemical in the bulk (78%) to interactions among microbial and chemical variables in the rhizosphere (87%). Results further indicate that organic matter and pH were significantly linked to these response variables in the rhizosphere. Involvement of rhizospheric microorganisms occurred via pH changes induced by either the microbial assimilation of nitrogen or through the release of metals during the mineralization of roots. Our results therefore suggest that microbial activity is an important component of the biogeochemistry of Al and Zn in the rhizosphere. The study further provides key information to improve the assessment of ecological risk associated to Al and Zn in forest soils.</AbstractText>
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<name sortKey="Turmel, Marie Claude" sort="Turmel, Marie Claude" uniqKey="Turmel M" first="Marie-Claude" last="Turmel">Marie-Claude Turmel</name>
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The speciation of water-soluble Al and Zn in the rhizosphere of forest soils.

The speciation of water-soluble Al and Zn in the rhizosphere of forest soils.

Source :

Descripteurs français

English descriptors

Abstract

Links toward previous steps (curation, corpus...)

Le document en format XML

Pour manipuler ce document sous Unix (Dilib)

Pour mettre un lien sur cette page dans le réseau Wicri

Pour générer des pages wiki