Bioaccumulation of 137Cs and 60Co by Helianthus annuus

• Autorzy: Horník M. , Pipíška M. , Vrtoch L. , Augustín J. , Lesný J.
• Konferencja: Proceedings of the International Conference Mechanism of Radionuclides and Heavy Metals Bioaccumulation and their Relevance for Biomonitoring, Warsaw, Poland, October 7-8, 2005
• Języki publikacji: EN

Abstrakty

EN

The 60Co and 137Cs bioaccumulation by Helianthus annuus L. was measured during 9 day cultivation at 20 š 2°C in hydroponic Hoagland medium. Previous starvation for K+ and for NH4 + 2.2 and 2.7 times, respectively, enhanced 137Cs uptake rate. Previous cultivation in surplus of K+ ions 50 mmol.l 1 has no effect on 137Cs bioaccumulation rate. Both 137Cs and 60Co bioaccumulation significantly increase with dilution of basic Hoagland medium up to 1:7 for caesium and up to 1:3 for cobalt followed by mild decrease at higher dilutions. Root to shoot specific 137Cs radioactivity ratio (Bq.g 1/Bq.g 1, fresh wt.) increased with dilution from 1.46 to 9.6-9.8. The values root to shoot specific radioactivity ratio for 60Co were less dependent on the nutrient concentrations and were within the range 5.7 to 8.5. 137Cs was localized mainly in young leaves (30%) and roots (39%) and 60Co mainly in roots (67%) and leaves (20%). Obtained data showed less sensitivity of 60Co uptake by sunflower on nutrient concentration in hydroponic media.

Słowa kluczowe

EN

Helianthus annuus; 60Co; 137Cs; bioaccumulation; starvation; autoradiography

• Wydawca: Institute of Nuclear Chemistry and Technology
• Czasopismo: Nukleonika
• Rocznik: 2005
• Tom: Vol. 50,suppl.1
• Strony: 49--52
• Opis fizyczny: Bibliogr. 13 poz., rys.

Twórcy

autor

Horník M.

• Department of Biotechnology, Faculty of Natural Sciences, University of SS. Cyril and Methodius, 2 Nam. J. Herdu Str., 917 01 Trnava, Slovak Republic Tel.: [phone], Fax: [phone]

autor

Pipíška M.

• Department of Biotechnology, Faculty of Natural Sciences, University of SS. Cyril and Methodius, 2 Nam. J. Herdu Str., 917 01 Trnava, Slovak Republic Tel.: [phone], Fax: [phone]

autor

Vrtoch L.

• Department of Biotechnology, Faculty of Natural Sciences, University of SS. Cyril and Methodius, 2 Nam. J. Herdu Str., 917 01 Trnava, Slovak Republic Tel.: [phone], Fax: [phone]

autor

Augustín J.

• Department of Biotechnology, Faculty of Natural Sciences, University of SS. Cyril and Methodius, 2 Nam. J. Herdu Str., 917 01 Trnava, Slovak Republic Tel.: [phone], Fax: [phone]

autor

Lesný J.

• Department of Biotechnology, Faculty of Natural Sciences, University of SS. Cyril and Methodius, 2 Nam. J. Herdu Str., 917 01 Trnava, Slovak Republic Tel.: [phone], Fax: [phone]

Bibliografia

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• 2. Dushenkov S (2003) Trends in phytoremediation of radionuclides. Plant Soil 249:167–175
• 3. Dushenkov S, Kapulnik Y (2000) Phytofiltration of metals. In: Raskin I, Ensley BD (eds) Phytoremediation of toxic metals. Using plants to clean up the environment. Wiley-Interscience, New York, pp 89–106
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• 7. Pipíška M, Lesný J, Horník M, Augustín J (2004) Plant uptake of radiocesium from contaminated soil. Nukleonika 49;S1:S9–S11
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• 9. Soudek P, Tykva R, Vanìk T (2004) Laboratory analyses of 137Cs uptake by sunflower, reed and poplar. Chemosphere 55:1081–1087
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• 12. Zhu YG, Shaw G, Nisbet AF, Wilkins BT (2000) Effect of potassium starvation on the uptake of radiocaesium by spring wheat (Triticum aestivum cv. Tonic). Plant Soil 220:27–34
• 13. Zhu YG, Shaw G, Nisbet AF, Wilkins BT (2002) Effect of external potassium supply and plant age on the uptake of radiocaesium (137Cs) by broad bean (Vicia faba): interpretation of results from a large-scale hydroponic study. Environ Exp Bot 47:173–187