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The Metabolism of Labeled Amitrole in Plants

Published online by Cambridge University Press:  12 June 2017

S. C. Fang ,
Elizabeth Fallin  and
Suchitra Khanna
S. C. Fang
Affiliation:
Department of Agricultural Chemistry, Oregon State University, Corvallis, Oregon
Elizabeth Fallin
Affiliation:
Department of Agricultural Chemistry, Oregon State University, Corvallis, Oregon
Suchitra Khanna
Affiliation:
Department of Agricultural Chemistry, Oregon State University, Corvallis, Oregon
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Abstract

The metabolism of 3-amino-1,2,4-triazole (amitrole) in bean (Phaseolus vulgaris L., var. Black Valentine) corn (Zea may L., var. Batam Cross), and sugar beet (Beta saccharifera L.) leaves was studied with both C14 and tritium-labeled amitrole. Insignificant amounts of C14 were recovered in the respired CO2 from plants given amitrole-5-C14. The metabolic conversion of amitrole in leaves was exponential and can be expressed by an equation for a first order reaction. The half-time of amitrole in sugar beet, corn, and bean leaves were 18.7, 28.0, and 23.2 hr, respectively. Radioactivity from amitrole-5-C14 was found in extracts or nucleic acids, proteins, and other plant constituents. Largest amounts of radioactivity were recovered as alcohol soluble metabolites. Experiments with (amitrole-H3) and (amitrole-5-C14) showed the position of hydrogen substitution in each alcohol soluble metabolite.

Type
Research Article
Information
Weeds , Volume 15 , Issue 4 , October 1967 , pp. 343 - 346
Copyright
Copyright © 1967 Weed Science Society of America 

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References

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