||Iron Nutrition Influence on Cadmium Accumulation by 'Arabidopsis thaliana' (L.) Heynh.
Rodecap, K. D. ;
Tingey, D. T. ;
Lee, E. H. ;
||ManTech Environmental Technology, Inc., Corvallis, OR. Environmental Research Lab.;Corvallis Environmental Research Lab., OR.
Plant nutrition ;
Plant metabolism ;
Biological effects ;
Toxic substances ;
Soil chemistry ;
Arabidopsis thaliana (L) Heynh ;
Iron efficient plants ;
Cadmium dihydrogen phosphate ;
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Greenhouse experiments were conducted to determine whether Arabidopsis thaliana (L.) Heynh., a putative Fe-efficient species, accumulated higher concentrations of Cd from a sparingly soluble Cd source (cadmium dihydrogen phosphate) when growing in Fe-deficient rather than in Fe-sufficient conditions. Analysis of the uptake of other elements by Arabidopsis suggests that the greater accumulation of Cd by plants in the Fe-deficient treatment may be a consequence of the species' Fe efficiency mechanisms. Our results support the hypothesis that uptake of toxic elements by Fe-efficient species can be enhanced when the plants are growing in Fe-deficient soils.