Effect of cadmium stress on the uptake and distribution of microelements copper and zinc in plant parts of barley (Hordeum sativum L.)
Lachman, J.(Ceska Zemedelska Univ., Prague (Czech Republic). Katedra Chemie)E-mail:[email protected] | Dudjak, J.(Ceska Zemedelska Univ., Prague (Czech Republic). Katedra Chemie) | Miholova, D.(Ceska Zemedelska Univ., Prague (Czech Republic). Katedra Chemie) | Kolihova, D.(Ceska Zemedelska Univ., Prague (Czech Republic). Katedra Chemie) | Pivec, V.(Ceska Zemedelska Univ., Prague (Czech Republic). Katedra Chemie)
Effect of Cd-stress caused by Cd+ (1 x 10**-6 mol/L) in 32 days old barley plants cultivated hydroponically in special boxes under the same conditions as control plants were investigated for their Cu and Zn uptake from nutrient medium and distribution in roots, shoots and leaf blades. Cd-stress caused the increase of Cu by 27.9% in the whole plant, but Zn content was nearly the same as in control plants. Cd-stress caused the increase of Cu content in roots (by 48.2%) and leaf blades (by 44.8%) and the decrease in shoots (by 32.9%). Zn content increased under Cd-stress only in leaf blades (by 31.1%), whereas it decreased in roots and shoots (by 6.1 and 4.5%, respectively). In conclusion, Cd-stress enhanced Cu and Zn concentrations in leaf blades, whereas in shoots their concentrations decreased. Differences were found in roots - Cu concentration increased and Zn concentration decreased.
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