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


     

Plant Physiology 80:612-617 (1986)
© 1986 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 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 Google Scholar
Google Scholar
Right arrow Articles by Shimabukuro, R. H.
Right arrow Articles by Hoerauf, R. A.
Right arrow Search for Related Content
PubMed
Right arrow PubMed Citation
Right arrow Articles by Shimabukuro, R. H.
Right arrow Articles by Hoerauf, R. A.
Agricola
Right arrow Articles by Shimabukuro, R. H.
Right arrow Articles by Hoerauf, R. A.
Articles

Reciprocal Antagonism between the Herbicides, Diclofop-Methyl and 2,4-D, in Corn and Soybean Tissue Culture

Richard H. Shimabukuro, Wendy C. Walsh and Roland A. Hoerauf

United States Department of Agriculture, Agricultural Research Service, State University Station, Fargo, North Dakota 58105, Metabolism and Radiation Research Laboratory, State University Station, Fargo, North Dakota 58105

The antagonistic interaction between the grass herbicide, diclofopmethyl (methyl 2-[4(2',4'-dichlorophenoxy)phenoxy]propanoate) (DM), and 2,4-dichlorophenoxyacetic acid (2,4-D), was demonstrated in DM-resistant soybean (Glycine max [L.] Merr.) and DM-susceptible corn (Zea mays L.). 2,4-D caused root shortening and thickening, and induced callus growth in soybean and corn root tissue cultures at 1 and 10 micromolar. Normal soybean root growth was unaffected by 10 micromolar DM whereas corn root growth was inhibited completely by 1 to 10 micromolar DM. DM at 10 micromolar reversed completely the induction of callus growth by 1 micromolar 2,4-D in soybean roots. In corn, 10 micromolar 2,4-D reversed the growth inhibiting activity of 1 micromolar DM and induced callus growth. The antagonistic interaction between DM and 2,4-D was reciprocal and the activity of either compound depended upon the relative concentration of the other. 2,4-D did not antagonize or decrease the activity of DM by decreasing its uptake by root tissues or increasing the rate of its detoxication. The antagonistic interaction between DM and 2,4-D probably involves involves cellular activity associated with actively growing and proliferating cells and requires the presence of both compounds at the sensitive site.






HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
ASPB Publications PLANT PHYSIOLOGY THE PLANT CELL
Copyright © 1986 by the American Society of Plant Biologists