Effect of saponin on the phytoextraction of Pb, Cd and Zn from soil using Italian ryegrass.
Chemically enhanced phytoextraction has been proposed as an effective approach to remove metals from contaminated soil through the Italian ryegrass (Lolium multiflorum Lam.). The bioconcentration factor (BCF) and translocation factor (TF) are important determinants for phytoextraction of metals. In microcosm experiments, effects of saponin on the uptake of Pb, Zn and Cd by Italian ryegrass were studied. Results of BCF indicated that Italian ryegrass was the most efficient in Zn uptake, followed by Cd and Pb (Zn > Cd > Pb). TF results were identical to the BCF results. In addition, the effect of metal stress on antioxidative enzyme activity was studied. Results revealed that under the metal stress, saponin played an important role in the antioxidative activities of Italian ryegrass.
School of Civil Engineering, Southeast University, No.2, Sipailou, Nanjing, 210096, People's Republic of China.
Tengyi
T
Zhu
Dafang
D
Fu
Fang
F
Yang
D000975:Antioxidants / Q000737:chemistry*; D001673:Biodegradation, Environmental; D002104:Cadmium / Q000032:analysis; D002681:China; D004784:Environmental Monitoring; D004787:Environmental Pollution; D005609:Free Radicals / Q000737:chemistry; D007558:Italy; D007854:Lead / Q000032:analysis; D008129:Lolium / Q000187:drug effects* / Q000378:metabolism; D008315:Malondialdehyde / Q000737:chemistry; D019216:Metals, Heavy / Q000032:analysis*; D010100:Oxygen / Q000737:chemistry; D018517:Plant Roots / Q000187:drug effects; D018520:Plant Shoots / Q000187:drug effects; D012016:Reference Values; D012503:Saponins / Q000737:chemistry*; D012987:Soil / Q000737:chemistry; D012989:Soil Pollutants / Q000032:analysis*; D013501:Surface-Active Agents / Q000737:chemistry; D015032:Zinc / Q000032:analysis
D000975:Antioxidants; D005609:Free Radicals; D019216:Metals, Heavy; D012503:Saponins; D012987:Soil; D012989:Soil Pollutants; D013501:Surface-Active Agents; D002104:Cadmium; D007854:Lead; D008315:Malondialdehyde; D015032:Zinc; D010100:Oxygen