| Relation between H＋-ATPase hydrolytic activity and Potassium uptake in the plasma membrane of wheat roots |
|
View Fulltext View/Add Comment Download reader |
| |
| DOI：10.7606/j.issn.1000-7601.2005.02.23 |
| Key Words: wheat H+-ATPase hydrolytic activity potassium |
|
| Hits: 406 |
| Download times: 184 |
| Abstract: |
| The discontinuous sucrose density gradient method was adopted to study the effects of potassium on H+-ATPase hydrolytic Activity with the roots of different genotypes of wheat. The study of many different materials showed that potassium stress existing in the environment of wheat growth could result in the increase of H+-ATPase hydrolytic activity in wheat plasma membrane as well the increase of the hydrolytic activity of different genotypes of wheat. H+-ATPase hydrolytic activity where there existed sufficient potassium in the environment of wheat growth was higher than that where there existed potassium shortage in the environment of wheat growth, and potassium shortage could lead to the decrease of the hydrolytic activity of different genotypes of wheat. These indicated that environmental potassium level could affect the hydrolytic activity and other traits of H+-ATPase in wheat roots. Plant potassium uptake did not have an obvious relation with H+-ATPase hydrolytic activity in root membrane and plant response to potassium stimulation. There were many factors to determine how much potassium could be taken up. |