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


     

Plant Physiology 73:111-117 (1983)
© 1983 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 CrossRef
Right arrow Citing Articles via Web of Science (4)
Right arrow Citing Articles via Google Scholar
Google Scholar
Right arrow Articles by Heldt-Hansen, H. P.
Right arrow Articles by Olson, L. W.
Right arrow Search for Related Content
PubMed
Right arrow PubMed Citation
Right arrow Articles by Heldt-Hansen, H. P.
Right arrow Articles by Olson, L. W.
Agricola
Right arrow Articles by Heldt-Hansen, H. P.
Right arrow Articles by Olson, L. W.
Articles

Respiration of Gametangia of the Aquatic Phycomycete Allomyces macrogynus1

Inhibition by Cyanide or Antimycin and Salicylhydroxamic Acid or Propyl Gallate

Hans Peter Heldt-Hansen, Neil G. Grant and Lauritz W. Olson2

Institute of Genetics, University of Copenhagen, Øster Farimagsgade 2A, DK-1353 Copenhagen K, Denmark, Department of Biology, William Paterson College of New Jersey, Wayne, New Jersey 07470

Gametangia of the aquatic phycomycete Allomyces macrogynus have a cyanide- and antimycin A-insensitive respiration, which is sensitive to salicylhydroxamic acid (alternative respiration). Propyl gallate is also an inhibitor of this alternative pathway, and propyl gallate is more efficient than hydroxamic acid. Gametangial respiration is insensitive to propyl gallate, but propyl gallate sensitivity is gradually established when the gametangia are titrated with cyanide. Carbonyl cyanide m-chlorophenyl hydrazone stimulates the cyanide-sensitive respiration and engages the alternative sensitive respiration. Sodium azide inhibits both the alternative and the cyanide-sensitive respiration, but the cyanide-sensitive respiration is inhibited 10 times more efficiently than the alternative respiration. Rotenone inhibits the total respiration and the propyl gallate-insensitive respiration by 33% and the cyanide-insensitive respiration by 43%.

The kinetic results reported here are discussed with respect to the models of de Troostembergh and Nyns (1977 Arch Int Physiol Biochem 85:404-406; 1978 Eur J Biochem 53:423-432) and of Bahr and Bonner (1973 J Biol Chem 248:3446-3450) for the partitioning of electrons between cyanide-insensitive and propyl gallate-insensitive respiration. The results reported here do not agree with the model of de Troostembergh and Nyns.

2 To whom requests for reprints should be addressed.

1 The work reported here was supported by North Atlantic Treaty Organization Grant 084.00 to L. W. O. and N. G. G.






HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
ASPB Publications PLANT PHYSIOLOGY® THE PLANT CELL
Copyright © 1983 by the American Society of Plant Biologists