Soil organic matter and salinity affect copper bio

Authors: Lana Matijevic Davor Romic Marija Romic

Publish Date: 2014/04/24

Volume: 36, Issue: 5, Pages: 883-896

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Abstract

Processes that control the mobility transformation and toxicity of metals in soil are of special importance in the rootdeveloping zone For this reason there is a considerable interest in understanding trace elements TEs behavior in soil emphasising the processes by which plants take them up Increased rootzone salinity can affect plant TEs uptake and accumulation in plant tissue Furthermore copper Cu complexation by soil organic matter SOM is an effective mechanism of Cu retention in soils controlling thus its bioavailability Therefore a greenhouse pot experiment was conducted to study the effects of soil Cu contamination in a saline environment on faba bean Vicia faba L element uptake Treatment with NaCl salinity was applied control 50 mM NaCl and 100 mM NaCl on faba bean plants grown in a control and in a soil spiked with Cu 250 and 500 mg kg−1 Low and high SOM content trial variants were studied Cu accumulation occurred in faba bean leaf pod and seed Cu contamination affected plant element concentrations in leaves Na Ca Mg Mn pod Zn Mn and seed Mn Mo Zn Rootzone salinity also affected faba bean element concentrations Furthermore Cu contamination—salinity and salinity—SOM interactions were significant for pod Cu concentration suggesting that Cu phytoavailability could be affected by these interactions Future research will be focused on the mechanisms of Cu translocation in plant and adaptation aspects of abiotic stressThis research was supported by the Ministry of Science Education and Sport of the Republic of Croatia contract 17817822210350 project “Soil salinization identifying processes and effects on crops” and contract 17817822212039 project “Spatial variability of potentially toxic metals in agricultural soils of Croatia”

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