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Atrazine Translocation and Metabolism in Sudangrass, Sorghum, and Corn

Published online by Cambridge University Press:  12 June 2017

F. W. Roeth  and
T. L. Lavy
F. W. Roeth
Affiliation:
University of Nebraska Department of Botany and Plant Pathology, Purdue University, Lafayette, Indiana
T. L. Lavy
Affiliation:
Department of Agronomy, University of Nebraska, Lincoln, Nebraska
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Abstract

Root and shoot extracts of 3-week-old sudangrass [Sorghum sudanense (Piper) Stapf, var. Piper], grain sorghum [Sorghum bicolor (L.) Moench], and corn (Zea mays L.) plants degraded 2-chloro-4-(ethylamino)-6-(isopropylamino)-s-triazine (atrazine) in order: shoot > root and corn ≫ sorghum = sudangrass. In 3-week-old detopped plants, the rate of atrazine exudation was 14 times greater in sudangrass and sorghum than in corn when grown in Keith sandy loam containing 0.5 ppmw 14C-atrazine. Extraction and analysis of plant shoots revealed that 7 to 8% of the 14C was present as atrazine in sudangrass and sorghum whereas no atrazine was found in corn. In 14C tracer studies, thin-layer chromatography showed that sudangrass and sorghum metabolized atrazine by a pathway which differed from the pathway in corn. Sudangrass and sorghum metabolized atrazine primarily to 2-chloro-4-amino-6-(isopropylamino)-s-triazine and 2-chloro-4-amino-6-(ethylamino)-s-triazine which are only partially detoxified compounds. Corn metabolized atrazine to 2-hydroxy-4-(ethylamino)-6-(isopropylamino)-s-triazine (hydroxyatrazine) which is non-phytotoxic.

Type
Research Article
Information
Weed Science , Volume 19 , Issue 1 , January 1971 , pp. 98 - 101
Copyright
Copyright © Weed Science Society of America 

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References

Literature Cited

1. Gupta, Copi N. 1966. A simple in-vial combustion method for assay of hydrogen-3, carbon-14, and sulfur-35 in biochemical, and organic materials. Anal. Chem. 38:1356–1359.Google Scholar
2. Gysin, A. and Knusli, E. 1960. Chemistry and herbicidal properties of triazine derivatives. Pest Contr. Res. 3:289–358.Google Scholar
3. Hamilton, R. H. 1964. Tolerance of several grass species to 2-chloro-s-triazine herbicides in relation to degradation and content of benzoxazinone derivatives. J. Agr. Food Chem. 12:14–17.Google Scholar
4. Hamilton, R. H. and Moreland, D. E. 1962. Simazine: degradation by corn seedlings. Science 135:373–374.Google Scholar
5. Palmer, R. D. and Grogan, C. O. 1965. Tolerance of corn lines to atrazine in relation to content of benzoxazinone derivative, 2-glucoside. Weeds 13:219–222.Google Scholar
6. Roeth, F. W. and Lavy, T. L. 1971. Atrazine uptake by sudangrass, sorghum, and corn. Weed Sci. 19: (In Press) Google Scholar
7. Shimabukuro, R. H. 1967. The significance of atrazine dealkylation in root and shoot of pea plants. J. Agr. Food Chem. 15:557–562.CrossRefGoogle Scholar
8. Shimabukuro, R. H. 1967. Atrazine metabolism and herbicidal selectivity. Plant Physiol. 42:1269–1276.Google Scholar
9. Shimabukuro, R. H. 1968. Atrazine metabolism in resistant corn and sorghum. Plant Physiol. 43:1925–1930.Google Scholar
10. Shimabukuro, R. H. and Swanson, H. R. 1969. Atrazine metabolism, selectivity, and mode of action. J. Agr. Food Chem. 17:199–207.Google Scholar
11. Shimabukuro, R. H., Kadunce, R. E., and Frear, D. S. 1966. Dealkylation of atrazine in mature pea plants. J. Agr. Food Chem. 14:392–395.Google Scholar
12. Van Slyke, D. D. and Folch, J. 1940. Manometric carbon determination. J. Biol. Chem. 136:509–541.Google Scholar