Effects of Ce⁴⁺ on Membrane Integrity of Rice in Seedling Hydroponic Cultures

Abstract

Rare earth elements have been extensively used as micro-fertilizers for crops in China. To understand the potential benefits or damages of Ce 4+ on rice, the effects of Ce 4+ on viability and membrane integrity of rice were investigated under hydroponic cultures. It has been found that the cell viability, electrical conductivity, pH changes, and concentration of malonyl dialdehyde did not change obviously when the content of Ce 4+ was 0.5 mg/L, but varied markedly when the contents of Ce 4+ were raised to 10 mg/L or more, indicating that the Ce 4+ at higher concentrations severely affected the cell membrane permeability.