, , ,


Received March 08, 1993,Revised , Accepted , Available online

Volume 7,1995,Pages 24-30

  • Summary
  • References
  • Related Articles
The effect of aluminum on NAD kinase in vivo and in vitro was studied. The concentration of alu- minum and exposure time are the main factors determining aluminum toxicity.Al can accumulate in the chloroplast of rice seedlings and affect calmodulin-dependent NAD kinase activity,however,calmodulin-in- dependent NAD kinase was insensitive to Al application. Calmedulin can reverse the inhibition of Al at low Al concentrations(0.001mmol/L -O. 5mmol/L),but the relaxing ability decreases at higher Al(2mmol/L).It is suggested that,aside from impairing calmedulin, Al may also affect calmedulin-dependent NAD kinase activ- ity by changing the enzyme structure.

Copyright © Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences. Published by Elsevier B.V. and Science Press. All rights reserved.京ICP备05002858号-3