TY - JOUR
T1 - Interactive Effects of Lead, Copper, Nickel and Zinc on Growth, Metal Uptake and Antioxidative Metabolism of Sesbania drummondii
AU - Israr, Mohd
AU - Jewell, Amy
AU - Kumar, Dhirendra
AU - Sahi, Shivendra V.
PY - 2011/2/28
Y1 - 2011/2/28
N2 - Sesbania drummondii seedlings were grown in a medium to which lead (Pb), copper (Cu), nickel (Ni) and zinc (Zn) were added singly and in combinations in order to assess the effects of metal interactions on seedling growth, metal accumulation and anti-oxidative system. S. drummondii growth was significantly inhibited with metal treatments. S. drummondii accumulated substantially higher concentrations of metals in the roots than shoots. The uptake of metals followed the order Pb > Cu > Zn > Ni in roots and Pb > Zn > Cu > Ni in shoots. In addition, uptake of a single metal by S. drummondii was affected by the presence of a second metal, suggesting an antagonistic effect or competition between metals at the plant uptake site. A significant increase in both enzymatic [superoxide dismutase (SOD), ascorbate peroxidase (APX), glutathione reductase (GR)] and non-enzymatic (glutathione) antioxidant was observed in the S. drummondii seedlings exposed to different metal treatments. The enhancement in enzyme activities followed the order of Cu > Ni > Pb > Zn. However, compared to the effect of individual metal, metals in combination increased the enzyme activities to varying degrees.
AB - Sesbania drummondii seedlings were grown in a medium to which lead (Pb), copper (Cu), nickel (Ni) and zinc (Zn) were added singly and in combinations in order to assess the effects of metal interactions on seedling growth, metal accumulation and anti-oxidative system. S. drummondii growth was significantly inhibited with metal treatments. S. drummondii accumulated substantially higher concentrations of metals in the roots than shoots. The uptake of metals followed the order Pb > Cu > Zn > Ni in roots and Pb > Zn > Cu > Ni in shoots. In addition, uptake of a single metal by S. drummondii was affected by the presence of a second metal, suggesting an antagonistic effect or competition between metals at the plant uptake site. A significant increase in both enzymatic [superoxide dismutase (SOD), ascorbate peroxidase (APX), glutathione reductase (GR)] and non-enzymatic (glutathione) antioxidant was observed in the S. drummondii seedlings exposed to different metal treatments. The enhancement in enzyme activities followed the order of Cu > Ni > Pb > Zn. However, compared to the effect of individual metal, metals in combination increased the enzyme activities to varying degrees.
KW - Anti-oxidants
KW - Anti-oxidative enzymes
KW - Heavy metals
KW - Oxidative stress
KW - Phytoremediation
KW - Sesbania drummondii
UR - https://dc.etsu.edu/etsu-works/16433
UR - https://doi.org/10.1016/j.jhazmat.2010.12.021
U2 - 10.1016/j.jhazmat.2010.12.021
DO - 10.1016/j.jhazmat.2010.12.021
M3 - Article
VL - 186
JO - Journal of Hazardous Materials
JF - Journal of Hazardous Materials
ER -