Dynamics of arbuscular mycorrhizal symbiosis in heavy metal phytoremediation: Meta-analytical and conceptual perspectives

Audet, Patrick and Charest, Christiane (2007) Dynamics of arbuscular mycorrhizal symbiosis in heavy metal phytoremediation: Meta-analytical and conceptual perspectives. Environmental Pollution, 147 3: 609-614. doi:10.1016/j.envpol.2006.10.006


Author Audet, Patrick
Charest, Christiane
Title Dynamics of arbuscular mycorrhizal symbiosis in heavy metal phytoremediation: Meta-analytical and conceptual perspectives
Journal name Environmental Pollution   Check publisher's open access policy
ISSN 0269-7491
1873-6424
Publication date 2007-06
Sub-type Article (original research)
DOI 10.1016/j.envpol.2006.10.006
Volume 147
Issue 3
Start page 609
End page 614
Total pages 6
Place of publication Oxford, United Kingdom
Publisher Pergamon
Language eng
Abstract To estimate dynamics of arbuscular mycorrhizal (AM) symbiosis in heavy metal (HM) phytoremediation, we conducted a literature survey and correlated HM uptake and relative plant growth parameters from published data. After estimating AM feedback responses for these parameters at low and high soil-HM concentration intervals, we determined that the roles of AM symbiosis are characterized by (1) an increased HM phytoextraction via mycorrhizospheric ‘Enhanced Uptake’ at low soil-HM concentrations, and (2) a reduced HM bioavailability via AM fungal ‘Metal-Binding’ processes at high soil-HM levels, hence resulting in increased plant biomass and enhanced plant tolerance through HM stress-avoidance. We present two conceptual models which illustrate the important compromise between plant growth, plant HM uptake and HM tolerance, and further emphasize the importance of AM symbiosis in buffering the soil environment for plants under such stress conditions.
Keyword AM feedback
HM bioavailability
HM phytotoxicity
Stress-avoidance
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Non-UQ
Additional Notes Air Pollution and Climate Change: A Global Overview of the Effects on Forest Vegetation

Document type: Journal Article
Sub-type: Article (original research)
Collections: Centre for Mined Land Rehabilitation Publications
ERA 2012 Admin Only
 
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Created: Tue, 07 Feb 2012, 11:22:05 EST by Dr Patrick Audet on behalf of Centre For Mined Land Rehabilitation