Hostname: page-component-76fb5796d-zzh7m Total loading time: 0 Render date: 2024-04-28T12:01:58.944Z Has data issue: false hasContentIssue false
  • English
  • Français

Mobility of RPA 201772 in Setaria faberi

Published online by Cambridge University Press:  20 January 2017

Bryan G. Young  and
Stephen E. Hart
Stephen E. Hart
Affiliation:
Crop Sciences Department, University of Illinois, Urbana, IL 61801
Get access Rights & Permissions [Opens in a new window]

Abstract

Translocation and metabolism of radiolabeled RPA 201772 was studied in Setaria faberi. Tissue-killing heat girdles were used to determine the extent of RPA 201772 transport in the apoplast and symplast. In leaf uptake studies, girdling was performed above and below the treated area on the leaf. In root uptake studies, girdling was performed on the stem just above the crown. Girdling restricted translocation of 14C following both the root and leaf applications. However, translocation occurred past the girdles suggesting that both the symplast and apoplast are involved in translocation of 14C from RPA 201772. Translocation of 14C out of the treated leaf was reduced 85% with a girdle below the 14C spotting area. In root metabolism studies, 27, 40, and 33% of recovered 14C were identified as parent RPA 201772, diketonitrile, and other metabolites, respectively, 24 h after treatment (HAT). Conversion from parent RPA 201772 to diketonitrile was more extensive in leaf tissue than in roots with 10, 68, and 22% of recovered 14C identified as parent RPA 201772, diketonitrile, and other metabolites, respectively, in the treated area of the leaf 24 HAT. Metabolite analysis demonstrated RPA 201772 is mobile in both the apoplast and symplast.

Keywords

RPA 201772 (5-cyclopropylisoxazol-4-yl 2-mesyl-4-trifluoromethylphenol ketone)Setaria faberi Herrm. SETFAgiant foxtailHerbicide translocationSETFA
Type
Research Article
Information
Weed Science , Volume 48 , Issue 2 , April 2000 , pp. 188 - 192
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

Dewey, S. A. and Appleby, A. P. 1983. A comparison between glyphosate and assimilate patterns in tall morningglory (Ipomoea purpurea). Weed Sci. 31:308–314.Google Scholar
Klevorn, T. B. and Wyse, D. L. 1984. Effect of leaf girdling and rhizome girdling on glyphosate transport in quackgrass (Agropyron repens). Weed Sci. 32:744–750.CrossRefGoogle Scholar
Lee, D. L., Prisbylla, M. P., Cromartie, T. H., Dagarin, D. P., Howard, S. W., Provan, W. M., Ellis, M. K., Fraser, T., and Mutter, L. C. 1997. The discovery and structural requirements of inhibitors of p-hydroxyphenylpyruvate dioxygenase. Weed Sci. 45:601–609.Google Scholar
Pallett, K. E., Little, J. P., Sheekey, M., and Veerasekaran, P. 1998. The mode of action of isoxaflutole I. Physiological effects, metabolism, and selectivity. Pestic. Biochem. Physiol. 62:113–124.Google Scholar
Vrabel, T. E., Streigel, W. L., and Lavoy, J. D. 1996. Efficacy of isoxaflutole as a burndown treatment in no-till corn. Page 67 In Proceedings of the North Central Weed Science Society. St. Louis, MO: North Central Weed Science Society.Google Scholar
Young, B. G. and Hart, S. E. 1998. Optimizing foliar activity of isoxaflutole on giant foxtail (Setaria faberi) with various adjuvants. Weed Sci. 46:397–402.CrossRefGoogle Scholar
Young, B. G., Hart, S. E., and Simmons, F. W. 1999. Preemergence weed control in conventional-till corn (Zea mays) with RPA 201772. Weed Technol. 13:471–477.CrossRefGoogle Scholar