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Lipid Influence on 2,4-D Transport and Accumulation

Published online by Cambridge University Press:  12 June 2017

A. E. Smith
A. E. Smith*
Affiliation:
Univ. of Georgia, Coll. of Agr. Exp. Sta., Georgia Sta., Experiment, Georgia 30212
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Abstract

Anionic herbicide transport properties of lipids were measured using the Schulman model of liquid-liquid membrane and parenchymateous tissue from potato (Solarium tuberosum L. ‘Russet’) tubers. The more polar lipids, lecithin and monogalactosyl dilinolenate, increased (2,4-dichlorophenoxy)acetic acid (2,4-D) exchange from the hydrophilic phase (buffered H2O:2,4-D solution) to the lipophilic phase (n-pentanol) more rapidly than the less polar triglycerides: tristearate, trioleate, and trilinolenate. The rate of 2,4-D exchange decreased with increased acidity of the hydrophilic phase indicating that polar lipids increased exchange of anionic herbicides through the liquid-liquid interface in the dissociated form. Potato tuber slices treated with lecithin accumulated more 2,4-D than did tissue receiving no lecithin, indicating that lecithin treatments increased 2,4-D accumulation by parenchymateous tissue when compared with untreated tissue.

Type
Research Article
Information
Weed Science , Volume 20 , Issue 1 , January 1972 , pp. 46 - 48
Copyright
Copyright © Weed Science Society of America 

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References

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