- Tytuł:
- Resistance of heather plants (Calluna vulgaris L.) to cesium toxicity
- Autorzy:
-
Bystrzejewska-Piotrowska, G.
Drożdż, A.
Stęborowski, R. - Powiązania:
- https://bibliotekanauki.pl/articles/148799.pdf
- Data publikacji:
- 2005
- Wydawca:
- Instytut Chemii i Techniki Jądrowej
- Tematy:
-
radiocesium
cesium toxicity
heather plants
K/Cs discrimination
potassium transport
potassium uptake - Opis:
- 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.
- Źródło:
-
Nukleonika; 2005, 50, 1; 31-35
0029-5922
1508-5791 - Pojawia się w:
- Nukleonika
- Dostawca treści:
- Biblioteka Nauki
Artykuł