Transport interactions between cadmium and zinc in roots of bread and durum wheat seedlings

• DOI: 10.1034/j.1399-3054.2002.1160109.x
• Publication Date: 2003-03-12T18:33:31Z
• Authors: Jonathan J. Hart; Ross M. Welch; Wendell A. Norvell; Leon V. Kochian
• Keywords: Winter wheat

Field studies have shown that the addition of Zn to Cd-containing soils can help reduce accumulation Cd in crop plants. To understand mechanisms involved, this study used 109Cd and 65Zn examine transport interactions at root cell plasma membrane bread wheat (Triticum aestivum L.) durum turgidum L. var. durum). Results showed Cd2+ uptake was inhibited by Zn2+ Cd2+. Concentration-dependent both consisted a combination linear binding walls saturable, Michaelis-Menten influx across membrane. Saturable data from experiments with without 10 micro m concentrations corresponding inhibiting ion were converted double reciprocal plots. The results revealed competitive interaction between Zn2+, confirming share common system wheat. suggests breeding or agronomic strategies aim decrease increase must take into account potential accompanying change competing ion.