Phytoremediation of cadmium

Mechanisms and Strategies for Phytoremediation of Cadmium

INTRODUCTION
    Phytoremediation
    Advantages of Phytoremediation
    Limitations of Phytoremediation

BIOAVAILABILITY OF CADMIUM
    Cation Exchange Capacity (CEC)
    pH
    Soil Amendments
    Competitive Cations
    Fertilizer
    Mycorrhizae
    Chelation
       Phytochelatins (PCs)
       Phytochelatin Effectiveness
       Role of Sulfur in PCs
       Oxidative Stress
       Translocation
       Metallothioneins
       Organic Acids
       EDTA / EGTA

CADMIUM TOLERANCE AND
ACCUMULATION IN PLANTS
    Cell Wall Binding
    Reduced Transport
    Compartmentalization
    Chelation
    Phytoextraction factors
       Table 1. Plant Accumulation
       Hyperaccumulators

CONCLUSIONS

BIBLIOGRAPHY

Cell wall binding
Some evidence suggests that Cd is bound in cell walls, as it has found to be associated with cell walls and the middle lamellae in maize (Kahn, et al. 1984).

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Page Created 4-18-00
Sam Cox
Department of Horticulture
Colorado State University
samcox@lamar.colostate.edu
http://lamar.colostate.edu/~samcox/index.htm