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Mechanism of Atrazine Resistance in Lambsquarters and Pigweed

Published online by Cambridge University Press:  12 June 2017

S.R. Radosevich
S.R. Radosevich*
Affiliation:
Dep. Bot., Univ. of California, Davis, CA 95616
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Abstract

Studies were conducted to determine the effect on absorption and metabolism of atrazine [2-chloro-4-(ethylamino)-6-(isopropylamino)-s-triazine] by atrazine-susceptible (S) and -resistant (R) biotypes of common lambsquarters (Chenopodium album L.) and redroot pigweed (Amaranthus retroflexus L.). The response of isolated chloroplasts of susceptible and resistant biotypes of each species was also studied. In both species the two biotypes absorbed atrazine equally well and were unable to differentially metabolize the herbicide. The photochemical activity of R chloroplasts isolated from each species was not inhibited by atrazine but S chloroplasts were severely inhibited.

Type
Research Article
Information
Weed Science , Volume 25 , Issue 4 , July 1977 , pp. 316 - 318
Copyright
Copyright © 1977 by the Weed Science Society of America 

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References

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