Hostname: page-component-586b7cd67f-l7hp2 Total loading time: 0 Render date: 2024-11-28T16:23:40.256Z Has data issue: false hasContentIssue false
  • English
  • Français

Translocation and Metabolism of Dicamba in Tartary Buckwheat

Published online by Cambridge University Press:  12 June 2017

F. Y. Chang  and
W. H. Vanden Born
F. Y. Chang
Affiliation:
Formerly Department of Plant Science, University of Alberta, Edmonton, Alberta; now Department of Botany, University of Guelph, Guelph, Ontario
W. H. Vanden Born
Affiliation:
Department of Plant Science, University of Alberta, Edmonton, Alberta
Get access Rights & Permissions [Opens in a new window]

Abstract

The herbicide 3,6-dichloro-o-anisic acid (dicamba) is very mobile in Tartary buckwheat (Fagopyrum tataricum (L.) Gaertn.), a susceptible weedy species. After foliar or root application, the compound was translocated rapidly to meristematic tissues at the shoot apex and in leaf axils. Redistribution of dicamba in the shoot, to young tissues, continued for at least 20 days. Metabolism of dicamba occurred very slowly, both in intact plants and in detached leaves, and the only metabolite detected was conjugated with sugars. The nonphytotoxic metabolite was identified by paper and thin-layer chromatography as 5-hydroxy-3,6-dichloro-o-anisic acid. Decarboxylation of dicamba also occurred in the plants but extremely slowly. The rapid entry and translocation of dicamba, its continued mobility in treated plants, and its very low rate of detoxification are major contributing factors to the effectiveness of dicamba for controlling Tartary buckwheat.

Type
Research Article
Information
Weed Science , Volume 19 , Issue 1 , January 1971 , pp. 107 - 112
Copyright
Copyright © Weed Science Society of America 

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

Literature Cited

1. Broadhurst, N. A., Montgomery, M. L., and Freed, V. H. 1966. Metabolism of 2-methoxy-3,6-dichlorobenzoic acid (dicamba) by wheat and bluegrass plants. J. Agr. Food Chem. 14: 585–588.CrossRefGoogle Scholar
2. Chang, F. Y. and Vanden Born, W. H. 1968. Translocation of dicamba in Canada thistle. Weed Sci. 16:176–181.CrossRefGoogle Scholar
3. Chow, P. N., Burnside, O. C., Lavy, T. L., and Knoche, H. W. 1966. Absorption, translocation, and metabolism of silvex in prickly pear. Weeds 14:38–41.Google Scholar
4. Crafts, A. S. and Yamagucht, S. 1964. The Autoradiography of Plant Materials. Univ. of California Agr. Publ., Manual 35, Berkeley, Calif. 143 p.Google Scholar
5. Hull, R. J. and Weisenberg, M. R. 1967. Translocation and metabolism of dicamba in Sorghum halepense and Phaseolus vulgaris. Plant Physiol. 42:S40.Google Scholar
6. Hurtt, W. and Foy, C. L. 1965. Some factors influencing the excretion of foliarly-applied dicamba and picloram from roots of Black Valentine beans. Plant Physiol. 40:S48.Google Scholar
7. Klämbt, H. D. 1962. Conversion in plants of benzoic acid to salicylic acid and its β-glucoside. Nature 196:491.Google Scholar
8. Leonard, O. A., Lider, L. A., and Glenn, R. K. 1966. Absorption and translocation of herbicides by Thompson seedless (Sultanina) grape, Vitis vinifera L. Weed Res. 6:37–49.Google Scholar
9. Linder, P. J., Mitchell, J. W., and Freeman, G. D. 1964. Persistence and translocation of exogenous regulating compounds that exude from roots. J. Agr. Food Chem. 12:437–438.CrossRefGoogle Scholar
10. Magalhaes, A. C., Ashton, F. M., and Foy, C. L. 1968. Translocation and fate of dicamba in purple nutsedge. Weed Sci. 16:240–245.Google Scholar
11. Ray, B. and Wilcox, M. 1969. Translocation of the herbicide dicamba in purple nutsedge, Cyperus rotundus. Physiol. Plant. 22:503–505.Google Scholar
12. Vanden Born, W. H. and Corns, W. G. 1958. Studies on seed dormancy, plant development, and chemical control of Tartary buckwheat (Fagopyrum tataricum (L.) Gaertn.). I. Seed dormancy. Can. J. Plant Sci. 38:357–366.Google Scholar