Effects of Various Doses of Selenite on Stinging Nettle (Urtica dioica L.)

Author： Krystofova Olga   Adam Vojtech   Babula Petr   Zehnalek Josef   Beklova Miroslava   Havel Ladislav   Kizek Rene  

Publisher： MDPI

E-ISSN： 1660-4601|7|10|3804-3815

ISSN： 1660-4601

Source： International Journal of Environmental Research and Public Health, Vol.7, Iss.10, 2010-10, pp. : 3804-3815

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Abstract

The aim of this study was to investigate the effects of selenium (Se) on the growth, accumulation and possible mechanisms of Se transport in certain parts (roots, leaves, stamp and apex) of nettle (Urtica dioica L.) plants. Se was supplemented by one-shot and two repeated doses to the soil (2.0 and 4.0 mg Se per kg of substrate). Selenium content in roots increased linearly with dose and was significantly higher compared to other plant parts of interest. However, growth of the above-ground parts of plant as well as roots was slightly inhibited with increasing selenium concentration in comparison to the untreated plants. The content of phytochelatin2, a low molecular mass peptide containing a sulfhydryl group, correlated well with the Se content. This suggests a possible stimulation of synthesis of this plant peptide by Se.

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