Contribution of an auxin to the uptake of nickel and cadmium in maize seedlings.
Maize seedlings were cultured in nickel or cadmium contaminated sand treated with alpha-naphthylacetic acid (NAA). The effects of NAA on nickel and cadmium uptake in roots, shoots, and subcellular fractions (cell wall, nuclei and remained parts of seedling cells) were determined. The data showed growth promotion when NAA was applied at low concentrations and inhibition at high concentrations. Uptake of nickel and cadmium content increased concurrently in roots and shoots. In the subcellular fraction, nickel and cadmium was greatest in the cell wall. The changes in growth had greatest correlation with nickel and cadmium content in the subcellular fraction.
Guo
D S
DS
Department of Environmentel Science, Shanxi University, Taiyuan, China.
Xi
Y Y
YY
Wang
A Y
AY
Zhang
J
J
Yuan
X Y
XY
D002104:Cadmium / Q000493:pharmacokinetics*; D002473:Cell Wall; D007210:Indoleacetic Acids / Q000494:pharmacology*; D009280:Naphthaleneacetic Acids / Q000494:pharmacology*; D009532:Nickel / Q000493:pharmacokinetics*; D010940:Plant Proteins / Q000494:pharmacology*; D014018:Tissue Distribution; D003313:Zea mays
D007210:Indoleacetic Acids; D009280:Naphthaleneacetic Acids; D010940:Plant Proteins; D002104:Cadmium; D009532:Nickel