Biologia Plantarum

, Volume 50, Issue 2, pp 239–244 | Cite as

Cadmium accumulation in Medicago sativa seedlings treated with salicylic acid



Growth parameters and cadmium accumulation were investigated in alfalfa seedlings treated with 10 μM salicylic acid (SA) at the beginning of seed imbibition. Shoot and root growths were accelerated by SA treatment and suppressed by Cd both in presence and absence of SA. Cd accumulation was stimulated by SA in alfalfa seedlings in dependence of the treatment duration. K, Mg, Ca and Fe contents in roots are decreased in the presence of Cd alone, while SA induces a decrease of Mg, Ca and Fe. Shoot K, Mg and Ca concentrations are increased by Cd only in the absence of SA, while SA induces also an increase of these concentrations, but only in the absence of Cd. High negative correlation of Cd concentration with K and Ca concentrations in root indicates a competition for the same carrier not regulated by SA. Positive correlation between Cd and Mg concentrations in shoots, which is decreased by SA pre-treatment, together with the increase of positive correlation between Cd and Fe concentrations in shoots under the influence of SA, indicates a possible mechanism of SA action through maintenance of ionic homeostasis.

Additional key words

alfalfa growth parameters mineral nutrients root shoot 



dry mass


fresh mass


salicylic acid


standard deviation


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Copyright information

© Institute of Experimental Botany, Academy of Sciences of the Czech Republic, Praha 2006

Authors and Affiliations

  1. 1.Institute for the Application of Nuclear EnergyZemunSerbia and Montenegro

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