Effects of elevated temperature and acidity to Copper toxicity to Lemna Minor

Abstract

This study examines effects of elevated temperature and water acidity to Cu toxicity to Lemna minor. The plants were treated with 1-1000 ml/l concentrations of Cu in their growth medium under current temperature (24 °C), elevated temperature (26 °C) and decreased water pH (5.5). Lemna minor had a strong phytotoxicity response to Cu application (inhibition of growth, biomass and increased content of malondialdehyde). Temperature and water pH decrease had high impact on Cu toxicity on Lemna minor. The highest decrease in growth rate of Lemna minor was observed under higher temperature. Some changes in Lemna minor biomass and lipid peroxidation response to Cu was also observed in case of higher temperature and water acidity