Stimulation of Cadmium Uptake in Relation to the Cadmium Content of Plants

Citations Over TimeTop 10% of 1978 papers

Abstract

The time course of cadmium uptake by the roots of intact tomato plants (Lycopersicon esculentum Mill.) was measured in a nutrient solution with a micromolar cadmium concentration until all cadmium in the medium was exhausted. Exhaustion taking a few hours, cadmium was repeatedly added to the nutrient solution. The initial rate of cadmium uptake was computed for each cadmium addition. This rate sharply increased and ultimately leveled off, the maximum value being about three times higher than the value measured after the first cadmium addition. The stimulating effect of cadmium was associated with an inhibitory effect at higher levels of cadmium concentrations. An increase in the net cadmium influx with time could not be explained by the binding of heavy metal to a fixed number of organic compounds. Conceivably, the production of binding sites could be increased and cadmium might play a part in controlling the rate of sites production.

Related Papers

• Cadmium levels and sources of exposure among Canadian adults.(2016)
• → Cadmium exposure from smoking cigarettes: Variations with time and country where purchased(1983)177 cited
• → Individual Susceptibility to Cadmium Toxicity and Metallothionein Gene Polymorphisms: with References to Current Status of Occupational Cadmium Exposure(2009)40 cited
• → Accumulation and elimination of cadmium in larval stage zebrafish following acute exposure(2006)32 cited
• → Environmental exposure to cadmium is decreasing among adults and children in the US(2017)