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Evidence for Hydrolysis of Esters of 2,4-D during Absorption by Plants

Published online by Cambridge University Press:  12 June 2017

A. S. Crafts
A. S. Crafts*
Affiliation:
University of California, Davis, California
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Extract

It has been recognized for some time that although short-chain alkyl esters of 2,4-D are very toxic, they do not translocate so well as the parent acid or the heavy esters. Two very plausible reasons for this are apparent: (1) These compounds, being highly lipoid soluble, dissolve readily in plant cuticle, and other lipoid phases, and tend to be held in this phase; (2) penetrating rapidly, these compounds are highly toxic to the treated leaves. This contact toxicity kills the mesophyll and fine vascular bundles of the leaf and stops translocation.

Type
Research Article
Information
Weeds , Volume 8 , Issue 1 , January 1960 , pp. 19 - 25
Copyright
Copyright © 1960 Weed Science Society of America 

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References

Literature Cited

1. Crafts, A. S. Translocation of herbicides. II. Absorption and translocation of 2,4-D by wild morning glory. Hilgardia 26(6):335–365. 1956.Google Scholar
2. Crafts, A. S. Further studies on comparative mobility of labeled herbicides. Plant Physiol. (In Press) 1959.Google Scholar
3. Crafts, A. S., and Yamaguchi, S. Comparative tests on the uptake and distribution of labeled herbicides by Zebrina pendula and Tradescantia fluminensis. Hilgardia 27 (16):421–454. 1958.Google Scholar
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5. Yamaguchi, S., and Crafts, A. S. Autoradiographic method for studying absorption and translocation of herbicides using C14-labeled compounds. Hilgardia 28(6): 161–191. 1958.Google Scholar
6. Zukel, J. W., Smith, A. E., Stone, G. M., and Davies, M. E. Effect of some factors on rate of absorption of maleic hydrazide. Plant Physiol. 31(suppl.): xxi. 1956.Google Scholar