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Metabolism of EPTC in Corn (Zea mays)

Published online by Cambridge University Press:  12 June 2017

R. D. Carringer ,
C. E. Rieck  and
L. P. Bush
R. D. Carringer
Affiliation:
Dep. of Agron., Univ. of Kentucky, Lexington, KY 40506
C. E. Rieck
Affiliation:
Dep. of Agron., Univ. of Kentucky, Lexington, KY 40506
L. P. Bush
Affiliation:
Dep. of Agron., Univ. of Kentucky, Lexington, KY 40506
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Abstract

EPTC (S-ethyl dipropylthiocarbamate) metabolism in corn (Zea mays L. ‘inbred B37’) was studied utilizing carbonyl-14C-EPTC and propyl-1-14C-EPTC. Two radioactive compounds were found in the organic-soluble fraction, namely, EPTC and EPTC-sulfoxide. Five metabolites were found in the water-soluble fraction. Amino acid analysis indicated that one water-soluble metabolite was a glutathione conjugate [S-(N,N-dipropylcarbamyl)glutathione] and that three other metabolites were probably degradation products of the glutathione conjugate. It was determined that EPTC-sulfoxide reacts chemically with reduced glutathione, yielding the conjugate. There was no detectable glutathione S-transferase enzyme activity associated with the sulfoxide cleavage.

Type
Research Article
Information
Weed Science , Volume 26 , Issue 2 , March 1978 , pp. 157 - 160
Copyright
Copyright © 1978 by the Weed Science Society of America 

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References

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