The distribution of 137Cs in maize (Zea mays L.) and two millet species (Panicum miliaceum L. and Panicum maximum Jacq.) cultivated on the caesium-contaminated soil

• Autorzy: Bystrzejewska-Piotrowska G. , Nowacka R.
• Konferencja: Proceedings of the International Conference Bioaccumulation of Radionuclides and Heavy Metals - as a Marker of Environmental Contamination, Kazimierz Dolny upon Vistula, Poland, September 26-28, 2004
• Języki publikacji: EN

Abstrakty

EN

The plants of three species (Zea mays L., Panicum miliaceum L. and Panicum maximum Jacq.) were grown on the soil contaminated with 0.3 mM CsCl solution traced with 137Cs, in the greenhouse. For all the species, the fresh-to-dry weight ratio was equal in the caesium-treated plants and in the control group after 3 weeks of culture. The shoot-to-root fresh weight and dry weight ratios were decreased in maize, unchanged in Panicum miliaceum and increased in Panicum maximum, comparing to the control without caesium treatment. The shoot/soil and also root/soil transfer factors (TF) for 137Cs (measured by means of NaI gamma spectrometer) were always the highest in maize, then lower in Panicum miliaceum and the lowest in Panicum maximum. All the plants seem to be hyperaccumulators of caesium. The root/soil TF was especially high in maize, i.e. 55 (kBq kg 1 biomass)/(kBq kg 1 soil). The shoot/root concentration factor (CF) for 137Cs was the lowest in maize, higher in Panicum miliaceum and the highest in Panicum maximum. The hyperaccumulation of 137Cs in the whole plant was the highest in maize, lower in Panicum miliaceum and the lowest in Panicum maximum. The proved ability of the investigated plants for phytoextraction of the soil caesium points to the possibility to utilise these plants in the soil bioremediation. From this point of view, Panicum maximum seems to be the most useful plant because it accumulates caesium mainly in the shoot, and maize would be the least useful species since it has the highest accumulation in the root.

Słowa kluczowe

EN

bioremediation; caesium hyperaccumulation; phytoextraction

• Wydawca: Institute of Nuclear Chemistry and Technology
• Czasopismo: Nukleonika
• Rocznik: 2004
• Tom: Vol. 49,suppl.1
• Strony: 13--16
• Opis fizyczny: Bibliogr. 5 poz., rys.

Twórcy

autor

Bystrzejewska-Piotrowska G.

• Isotopic Laboratory, Faculty of Biology, Warsaw University, 1 Miecznikowa Str., 02-096 Warsaw, Poland, Tel.: [phone], Fax: [phone]

autor

Nowacka R.

• Isotopic Laboratory, Faculty of Biology, Warsaw University, 1 Miecznikowa Str., 02-096 Warsaw, Poland, Tel.: [phone], Fax: [phone]

Bibliografia

• 1. Bazała M (2003) Accumulation of caesium isotopes (137Cs and 133Cs) in maize (Zea mays) and their influence on biomass growth, photosynthesis and transpiration in the early growth phase. BSc Thesis. Isotopic Laboratory, Faculty of Biology,Warsaw University (in Polish)
• 2. Bystrzejewska-Piotrowska G, Urban PL (2003) Accumulation of caesium in leaves of Lepidium sativum and its influence on photosynthesis and transpiration. Acta Biol Cracov Bot 45:131−137
• 3. Bystrzejewska-Piotrowska G, Urban PL (2004) Accumulation and translocation of caesium-137 in onion plants (Allium cepa). Environ Exp Bot 51:3−7
• 4. Kopcewicz J, Lewak S (1998) Plant physiology. WN PWN, Warsaw (in Polish)
• 5. Zhu Y-G, Smolders E (2000) Plant uptake of radiocaesium: a review of mechanism, regulation and application. J Exp Bot 51:1635−1645