Resistance of heather plants (Calluna vulgaris L.) to cesium toxicity

• Autorzy: Bystrzejewska-Piotrowska G. , Drożdż A. , Stęborowski R.
• Języki publikacji: EN

Abstrakty

EN

Experiments were carried out to determine uptake and distribution of 137Cs, and total isotopes of Cs and K in plants of heather (Calluna vulgaris) growing at two levels of CsCl: 0.03 and 0.3 mM. Levels of Cs and K were determined in soil and in parts of plants: roots, stem, leaves and flowers. Also calculated were: (i) transfer factor of Cs and K from soil to parts of plant and (ii) discrimination of K by Cs during the transport of Cs from roots to aboveground parts of plants, expressed as K/Cs discrimination factor. The results confirmed that heather plants are hyper-accumulators of cesium, because the accumulation of Cs in shoot was much greater than in roots. The K level in heather did not change at Cs concentrations as high as 8-fold Cs level in this plant. Heather plants seem to be relatively resistant to cesium toxicity at 0.3 mM of CsCl; the effect of exposure to CsCl at this concentration was exerted only on roots, without affecting leaves and flowers. These results supply new information on the interactions between Cs and K nutrition in plants; they also point to a possible role of heather in redistribution of the radiocesium pollution in the forest ecosystem.

Słowa kluczowe

EN

radiocesium; cesium toxicity; heather plants; K/Cs discrimination; potassium transport; potassium uptake

• Wydawca: Institute of Nuclear Chemistry and Technology
• Czasopismo: Nukleonika
• Rocznik: 2005
• Tom: Vol. 50, nr 1
• Strony: 31--35
• Opis fizyczny: Bibliogr. 23 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

Drożdż A.

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

autor

Stęborowski R.

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

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