Allocation plasticity and plant-metal partitioning: Meta-analytical perspectives in phytoremediation

Audet, Patrick and Charest, Christiane (2008) Allocation plasticity and plant-metal partitioning: Meta-analytical perspectives in phytoremediation. Environmental Pollution, 156 2: 290-296. doi:10.1016/j.envpol.2008.02.010


Author Audet, Patrick
Charest, Christiane
Title Allocation plasticity and plant-metal partitioning: Meta-analytical perspectives in phytoremediation
Journal name Environmental Pollution   Check publisher's open access policy
ISSN 0269-7491
1873-6424
Publication date 2008-11-01
Sub-type Article (original research)
DOI 10.1016/j.envpol.2008.02.010
Volume 156
Issue 2
Start page 290
End page 296
Total pages 7
Place of publication Oxford, United Kingdom
Publisher Pergamon
Language eng
Abstract In this meta-analysis of plant growth and metal uptake parameters, we selected 19 studies of heavy metal (HM) phytoremediation to evaluate trends of allocation plasticity and plant-metal partitioning in roots relative to shoots. We calculated indexes of biomass allocation and metal distribution for numerous metals and plant species among four families of interest for phytoremediation purposes (e.g. Brassicaceae, Fabaceae, Poaceae, and Solanaceae). We determined that plants shift their biomass and distribute metals more to roots than shoots possibly to circumvent the challenges of increasing soil-HM conditions. Although this shift is viewed as a stress-avoidance strategy complementing intrinsic stress-tolerance, our findings indicate that plants express different levels of allocation plasticity and metal partitioning depending on their overall growth strategy and status as 'fast-grower' or 'slow-grower' species. Accordingly, we propose a conceptual model of allocation plasticity and plant-metal partitioning comparing 'fast-grower' and 'slow-grower' strategies and outlining applications for remediation practices.
Keyword Root/shoot partitioning
Trace metal
Metal toxicity
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Non-UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: Centre for Mined Land Rehabilitation Publications
ERA 2012 Admin Only
 
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Citation counts: TR Web of Science Citation Count  Cited 30 times in Thomson Reuters Web of Science Article | Citations
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Created: Tue, 07 Feb 2012, 21:24:54 EST by Dr Patrick Audet on behalf of Centre For Mined Land Rehabilitation