Plant Physiol. Journal of Pharmacology and Experimental Therapeutics
HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
QUICK SEARCH:   [advanced]


     

Plant Physiology 52:569-574 (1973)
© 1973 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 (56)
Right arrow Citing Articles via Google Scholar
Google Scholar
Right arrow Articles by Arntzen, C. J.
Right arrow Articles by Bobick, S.
Right arrow Search for Related Content
PubMed
Right arrow PubMed Citation
Right arrow Articles by Arntzen, C. J.
Right arrow Articles by Bobick, S.
Agricola
Right arrow Articles by Arntzen, C. J.
Right arrow Articles by Bobick, S.
Articles

Induction of Stomatal Closure by Helminthosporium maydis Pathotoxin 1

C. J. Arntzen, M. F. Haugh2 and S. Bobick3

a Department of Botany, University of Illinois, Urbana, Illinois 61801

Helminthosporium maydis pathotoxin caused a rapid inhibition of photosynthesis in whole leaves of maize having Texas male-sterile cytoplasm but not in leaves having normal cytoplasm. Electron transport, phosphorylation, and proton uptake activities of isolated chloroplast lamellae, from either normal or Texas male-sterile cytoplasm leaves, were unaffected by addition of toxin to the reaction mixture. The toxin was found to have a direct effect on stomatal functioning. Rates of transpiration were inhibited in treated leaves at times slightly preceding the observed effects on photosynthesis. In studies with isolated epidermal peels from Texas male-sterile cytoplasm maize leaves, the toxin inhibited light-induced K+ uptake by guard cells. All effects of the toxin on Texas male-sterile cytoplasm maize tissues were found to be similar to the mode of action of abscisic acid.

2 Participant in the summer undergraduate research program of the National Science Foundation.

3 Present address: Biochemical Pharmacology, Division of Biological and Medical Sciences, Brown University, Providence, R.I. 02912.

1 This work was supported in part by funds from the Illinois Agricultural Experiment Station.




This article has been cited by other articles:


Home page
 Plant CellHome page
D. A. Navarre and T. J. Wolpert
Victorin Induction of an Apoptotic/Senescence–like Response in Oats
PLANT CELL, February 1, 1999; 11(2): 237 - 250.
[Abstract] [Full Text]


HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
ASPB Publications PLANT PHYSIOLOGY® THE PLANT CELL
Copyright © 1973 by the American Society of Plant Biologists