Plant Physiol.
HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
QUICK SEARCH:   [advanced]


     

Plant Physiology 77:43-45 (1985)
© 1985 American Society of Plant Biologists

This Article
Right arrow Full Text (PDF)
Right arrow Alert me when this article is cited
Right arrow Alert me if a correction is posted
Services
Right arrow Email this article to a friend
Right arrow Similar articles in this journal
Right arrow Similar articles in Web of Science
Right arrow Similar articles in PubMed
Right arrow Alert me to new issues of the journal
Right arrow Download to citation manager
Right arrow reprints & permissions
Citing Articles
Right arrow Citing Articles via HighWire
Right arrow Citing Articles via CrossRef
Right arrow Citing Articles via Web of Science (45)
Right arrow Citing Articles via Google Scholar
Google Scholar
Right arrow Articles by Dominy, P. J.
Right arrow Articles by Heath, R. L.
Right arrow Search for Related Content
PubMed
Right arrow PubMed Citation
Right arrow Articles by Dominy, P. J.
Right arrow Articles by Heath, R. L.
Agricola
Right arrow Articles by Dominy, P. J.
Right arrow Articles by Heath, R. L.
Articles

Inhibition of the K+-Stimulated ATPase of the Plasmalemma of Pinto Bean Leaves by Ozone

Peter J. Dominy1 and Robert L. Heath

Department of Botany and Plant Sciences, University of California, Riverside, California 92521

Three varieties of Phaseolus vulgaris which differ in their sensitivity to ozone were examined for changes in some physiological and structural plasma membrane characteristics. Plasma membrane vesicles were prepared from control and ozone-treated (0.2 to 0.5 microliters per liter ozone for 5 hours) leaf tissue, and the (K+ + Mg2+)-ATPase activity determined and compared. No major changes were observed in the resistant varieties. The sensitive variety showed a severe inhibition of ATPase activity which was largely due to a decrease in the K+-stimulated component. This inhibition was completely reversed by the addition of sulfhydryl compounds.

Ozone-induced plasma membrane permeability changes may be effected by damage to membrane proteins, perhaps by oxidation of amino acid sulfhydryl groups to disulfide and sulfenic moieties.

1 Present address: Department of Biophysics, Chelsea College, University of London, Manresa Road, London, England.




This article has been cited by other articles:


Home page
 Proc. Natl. Acad. Sci. USAHome page
G. Torsethaugen, E. J. Pell, and S. M. Assmann
Ozone inhibits guard cell K+ channels implicated in stomatal opening
PNAS, November 9, 1999; 96(23): 13577 - 13582.
[Abstract] [Full Text] [PDF]


HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
ASPB Publications PLANT PHYSIOLOGY® THE PLANT CELL
Copyright © 1985 by the American Society of Plant Biologists