Untersuchung der Wurzelexsudation nach unterschiedlicher Eisen- und Kupferversorgung am Beispiel von Lupinus albus L.

Providing Lupinus albus L. with nutrient solutions varying in their iron and copper content resulted in different root exudation patterns. Iron deficiency caused a high release of phenolic compounds and protons and an accumulation of copper in the roots. After plant exposition to copper deficiency, increased amounts of dissolved organic carbon in the medium were measured. Plants grown under excess of copper accumulated the metal in the roots and translocated a part to the shoot. Additionally, higher amounts of phenolics in the medium were found.