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Effects of 2,4-D on Metabolism of 14C-Glucose in Plant Tissues

Published online by Cambridge University Press:  12 June 2017

I. Y. Mostafa  and
S. C. Fang
I. Y. Mostafa
Affiliation:
Department of Agricultural Chemistry, Oregon State University, Corvalis, Oregon
S. C. Fang
Affiliation:
Department of Agricultural Chemistry, Oregon State University, Corvalis, Oregon
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Abstract

A time course study on the in vitro effect of 10–4 M (2,4-dichlorophenoxy)acetic acid (2,4-D) on the metabolism and incorporation of specific 14C-labeled glucose into pea (Pisum sativum L., var. Alaska) and corn (Zea mays L., var. Golden Cross) tissues showed a preferential release of C-1 as CO2 which was affected by 2,4-D. The glucuronic acid pathway was stimulated greatly in pea roots and slightly in corn stems; it was inhibited in corn roots. The pentose phosphate pathway was affected in an opposite pattern. The incorporation of both labeled carbon atoms into alcohol-insoluble residue was also affected by 2,4-D. The degree of effect, however, varied from pea to corn and from roots to stems. Analysis of the alcohol-soluble fraction revealed different effects of 2,4-D on labeling of some of the amino acids, an increase in fructose content, and an accumulation of malic acid.

Type
Research Article
Information
Weed Science , Volume 19 , Issue 3 , May 1971 , pp. 248 - 253
Copyright
Copyright © Weed Science Society of America 

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References

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