Effects of EDTA on mechanism of lead accumulation in Typha orientalis Presl.
The effects of EDTA on the mechanism of accumulation under Pb2+ stress in Typha orientalis Presl were investigated. The results indicated that addition of the chelator with Pb limited metal phytotoxicity. The mean total chlorophyll concentration and protein content were increased with the addition of EDTA in Pb2+ solution. We also demonstrated a significant effect of EDTA on the reduced glutathione (GSH) content which was obviously increased both in leaves and caudices. It was supposed that EDTA elevated the tolerance of Typha orientalis Presl under Pb2+ stress primarily by increasing the GSH level.
Li
Yongli
Y
School of Environment, Beijing Normal University, No.19 Xinjiekouwai Street, Haidian District, 100875 Beijing, People's Republic of China. lyl723@126.com
Liu
Jingling
J
Liu
Yunguo
Y
Li
Xin
X
D002614:Chelating Agents / Q000494:pharmacology*; D004492:Edetic Acid / Q000494:pharmacology*; D004785:Environmental Pollutants / Q000493:pharmacokinetics*; D007854:Lead / Q000493:pharmacokinetics*; D014018:Tissue Distribution; D032401:Typhaceae / Q000737:chemistry*
D002614:Chelating Agents; D004785:Environmental Pollutants; D007854:Lead; D004492:Edetic Acid