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Uptake and Translocation of 2,4-D-1-14C in Parrotfeather

Published online by Cambridge University Press:  12 June 2017

David L. Sutton  and
S. W. Bingham
David L. Sutton
Affiliation:
Plant Physiology, Department of Plant Pathology and Physiology, Virginia Polytechnic Institute, Blacksburg, Virginia
S. W. Bingham
Affiliation:
Plant Physiology, Department of Plant Pathology and Physiology, Virginia Polytechnic Institute, Blacksburg, Virginia
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Abstract

Root applications of (2,4-dichlorophenoxy)acetic acid (2,4-D) at concentrations of 2.5 × 10−8M or higher inhibited growth of emersed parrotfeather (Myriophyllum brasiliense Camb.). There was little acropetal movement after applications of 1.1 × 10−5M 2,4-D-1-14C to the roots of emersed parrotfeather. When the metabolic inhibitor dinitrophenol at concentrations of 10−3 or 10−4M was root-applied concomitantly with 10−8M 2,4-D-1-14C, there was an acropetal movement of radioactivity in the transpiration stream to the plant shoot. Basipetal movement occurred in the phloem after applications of 2.2 μg 2,4-D-1-14C to mature leaves in the shoot center of emersed parrotfeather.

Type
Research Article
Information
Weed Science , Volume 18 , Issue 2 , March 1970 , pp. 193 - 196
Copyright
Copyright © 1970 Weed Science Society of America 

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References

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