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Effect of Atrazine on Chromatin Activity in Corn and Soybean

Published online by Cambridge University Press:  12 June 2017

Donald Penner  and
Roy W. Early
Donald Penner
Affiliation:
Dep. of Crop and Soil Sci., Mich. State Univ., East Lansing, Michigan, 48823
Roy W. Early
Affiliation:
Dep. of Crop and Soil Sci., Mich. State Univ., East Lansing, Michigan, 48823
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Abstract

Applications of 2-chloro-4-(ethylamino)-6-(isopropylamino)-s-triazine (atrazine) at 10−4, 10−5, and 10−6 M to 4-day-old etiolated soybean [Glycine max (L.) Merr. ‘Mark’] seedlings 6 hr before the isolation of chromatin enhanced the chromatin directed ribonucleic acid (RNA) synthesis by 16, 65, and 40%, respectively. The magnitude of this inductive effect increased with an increasing interval of time from 6 to 24 hr between application and chromatin isolation. The basis for the effect appeared to be an atrazine-mediated increase in chromatin template availability. The presence of atrazine during extraction and the assay was sufficient to evoke the response. This effect on chromatin activity was not observed for 2-hydroxy-4-(ethylamino)-6-isopropylamino)-s-triazine (hydroxyatrazine) or for atrazine on corn (Zea mays L. ‘Michigan 400′).

Type
Research Article
Information
Weed Science , Volume 20 , Issue 4 , July 1972 , pp. 367 - 370
Copyright
Copyright © Weed Science Society of America 

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