Effect of Se-metal pair combinations (Cd, Zn, Cu, Pb) on photosynthetic pigments production and metal accumulation in Sinapis alba L. seedlings
Fargasova, A.(Univerzita Komenskeho, Bratislava (Slovak Republic). Prirodovedecka Fakulta)E-mail:[email protected] | Pastierova, J.(Univerzita Komenskeho, Bratislava (Slovak Republic). Prirodovedecka Fakulta) | Svetkova, K.(Slovenska Technicka Univ., Bratislava (Slovak Republic). Fakulta Chemickej a Potravinarskej Technologie)
Mustard seedlings were used to study the effect of Se on the phytotoxicity of Cd, Zn, Cu and Pb added to hydroponic solutions. AAS was used to determine the accumulation of heavy metals in the roots and shoots. Se in all metal pair combinations reduced the unfavourable effect of the metals tested on chlorophyll content. However, an opposite effect was observed for carotenoids. Se stimulated Cd (about 24%) and Cu (about 9%) accumulation in the roots, whereas it inhibited the accumulation of the metals in the shoots. The strongest inhibition was observed with Pb (84.9%). In contrast, Cu, Zn, Pb and Cd increased Se accumulation in the roots in the range of 4 (in combination with Cu) to 68% (in combination with Cd) and in the shoots in the range of 11 (in combination with Pb and Zn) to 44% (in combination with Cd). In the shoots, only Cu inhibited Se accumulation (about 67%).
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