TY - JOUR
T1 - Cadmium and Nickel Adsorption and Uptake in Cattail as Affected by Iron and Manganese Plaque on the Root Surface
AU - Ye, Z. H.
AU - Cheung, K. C.
AU - Wong, M. H.
N1 - Funding Information:
The authors thank Professor A.D. Bradshaw, School of Biological Sciences, University of Liverpool, for his invaluable comments. Financial support from Research Grant Council of the University Grants Committee of Hong Kong, and Faculty Research Grant, Hong Kong Baptist University is gratefully acknowledged.
PY - 2003
Y1 - 2003
N2 - The effects of iron (Fe) and manganese (Mn) plaque on the adsorption and uptake of cadmium (Cd) and nickel (Ni) in cattail (Typha latifolia L.) were investigated in nutrient solution cultures under laboratory conditions. Seedlings with and without Fe or Mn plaque on the roots (induced with 15 μg mL-1 Fe or Mn) were exposed to 0.2 and 0.8 μg mL-1 Cd, or 0.12 and 0.36 μg mL-1 Ni solutions for 22 days, respectively. The results showed that the amounts of Cd and Ni adsorbed on root surface with and without Fe or Mn plaque increased with increasing additions of Cd and Ni in the solutions. Typha latifolia with Mn plaque adsorbed more Cd and Ni, and with Fe plaque adsorbed more Cd on its roots, especially at higher Cd (0.8 μg mL-1) or Ni (36 pg mL-1) treatment solutions. The presence of Fe plaque can inhibit Cd (but not Ni), while Mn plaque inhibit Ni (but not Cd) uptake and translocation from roots to shoots at higher Cd or Ni solutions. The data here suggest that the formation of Fe or Mn plaque on roots can increase adsorption of certain metals depending on various factors such as type of metals and plaque, and metal concentration in solution.
AB - The effects of iron (Fe) and manganese (Mn) plaque on the adsorption and uptake of cadmium (Cd) and nickel (Ni) in cattail (Typha latifolia L.) were investigated in nutrient solution cultures under laboratory conditions. Seedlings with and without Fe or Mn plaque on the roots (induced with 15 μg mL-1 Fe or Mn) were exposed to 0.2 and 0.8 μg mL-1 Cd, or 0.12 and 0.36 μg mL-1 Ni solutions for 22 days, respectively. The results showed that the amounts of Cd and Ni adsorbed on root surface with and without Fe or Mn plaque increased with increasing additions of Cd and Ni in the solutions. Typha latifolia with Mn plaque adsorbed more Cd and Ni, and with Fe plaque adsorbed more Cd on its roots, especially at higher Cd (0.8 μg mL-1) or Ni (36 pg mL-1) treatment solutions. The presence of Fe plaque can inhibit Cd (but not Ni), while Mn plaque inhibit Ni (but not Cd) uptake and translocation from roots to shoots at higher Cd or Ni solutions. The data here suggest that the formation of Fe or Mn plaque on roots can increase adsorption of certain metals depending on various factors such as type of metals and plaque, and metal concentration in solution.
UR - http://www.scopus.com/inward/record.url?scp=0345257120&partnerID=8YFLogxK
U2 - 10.1081/CSS-120025202
DO - 10.1081/CSS-120025202
M3 - Journal article
AN - SCOPUS:0345257120
SN - 0010-3624
VL - 34
SP - 2763
EP - 2778
JO - Communications in Soil Science and Plant Analysis
JF - Communications in Soil Science and Plant Analysis
IS - 19-20
ER -