The Uptake of Iron as Ferric Sequestrene by Vicia faba and Phaseolus vulgaris.

Autor: Heinonen, Samuli, Waris, Harry
Předmět:
Zdroj: Physiologia Plantarum; 1956, Vol. 9 Issue 4, p618-623, 6p
Abstrakt: The ability of Vicia faba and Phaseolus vulgaris to take up iron from solutions with and without EDTA was investigated by analysing the exudates which were collected in pipettes after the stems had been cut off. The results indicate that the higher iron content of the exudate in the presence of the chelate compound as compared with an inorganic iron source is mainly referable to the fact that the inorganic iron tends to be removed from the nutrient solution by precipitation, whereas, within the error limits, no considerable differences was found between the two iron sources when their concentrations in the solutions were high enough, the individual variations being in both cases rather large. There was some indirect evidence in favour of the view that the iron may pass in the chelate form from the nutrient solution into the ascending sap. [ABSTRACT FROM AUTHOR]
Databáze: Complementary Index