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Metabolism of Amitrole in Excised Leaves of Canada Thistle Ecotypes and Bean

  • L. W. Smith (a1), D. E. Bayer (a2) and C. L. Foy (a2)

Abstract

Excised leaves of Canada thistle (Cirsium arvense (L.) Scop.) ecotypes and bean (Phaseolus vulgaris L., var. Red Kidney) metabolized 3-amino-l,2,4-triazole-14C (amitrole) to the same radiolabeled products, but they were produced at different rates as shown by thin-layer and paper chromatography. Bean leaves metabolized amitrole to a metabolic product (Unknown II) probably β-(3-amino-1,2,4-triazolyl-1-) α-alanine approximately three times taster than Canada thistle leaves, while Canada thistle converted Unknown II to another product (Unknown I) about 10 times faster than did bean. Thus Unknown II accumulated in bean, and Unknown I in Canada thistle. This reaction sequence in Canada thistle was evidently an irreversible consecutive first order reaction. A difference in the rate of metabolism was observed between susceptible and resistant ecotypes of Canada thistle.

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1. Carter, M. C. 1965. Studies on the metabolic activity of 3-amino-l,2,4-triazole. Physiol. Plant. 18:10541058.
2. Carter, M. C. and Naylor, A. W. 1960. Metabolism of 3-amino-l,2,4-triazole in plants. Bot. Gaz. 122:138143.
3. Fang, C. S., Fallin, E., and Khann, S. 1967. The metabolism of labeled amitrole in plants. Weeds 15:343346.
4. Fredrick, J. F. and Gentile, A. C. 1965. Physico-chemical studies of the metabolic end-product of 3-amino-l,2,4-triazole in yeast. Phytochemistry 4:851856.
5. Frederick, J. F. and Gentile, A. C. 1967. The effects of 3-amino-l,2,4-triazole on the carbohydrate metabolism of plants. Ann. N.Y. Acad. Sci. 144:362366.
6. Herrett, R. A. and Bagley, W. P. 1964. The metabolism and translocation of 3-amino-l,2,4-triazole by Canada thistle. J. Agr. Food Chem. 12:1720.
7. Herrett, R. A. and Linck, A. J. 1961. The metabolism of 3-amino-l,2,4-triazole by Canada thistle and field bindweed and the possible relation to its herbicidal action. Physiol. Plant. 14:767776.
8. Hilton, J. L., Jansen, L. L., and Hull, H. M. 1963. Mechanisms of herbicide action. An. Rev. Plant Physiol. 14:353384.
9. Hodgson, J. M. 1964. Variations in ecotypes of Canada thistle. Weeds 12:167171.
10. Massini, P. 1963. Aminotriazolylalanine: A metabolic product of aminotriazole from plants. Acta Bot. Neerl. 12:6472.
11. Moore, W. J. 1965. Physical Chemistry. 3rd Ed. Prentice Hall, New York. 844 p.
12. Racusen, David. 1958. The metabolism and translocation of 3-aminotriazole in plants. Arch. Biochem. Biophys. 74:106113.
13. Shimabukuro, R. H. and Linck, A. J. 1965. The metabolism of 3-amino-l,2,4-triazole in the fruit of bean, Phaseolus vulgaris . Physiol. Plant. 18:532539.
14. Smith, L. W. and Bayer, D. E. 1965. Preliminary greenhouse trials on the susceptibility of several ecotypes of Canada thistle to four herbicides. Res. Prog. Rept. WWCC p. 3.

Metabolism of Amitrole in Excised Leaves of Canada Thistle Ecotypes and Bean

  • L. W. Smith (a1), D. E. Bayer (a2) and C. L. Foy (a2)

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