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Thioproline Protection of Crops Against Herbicide Toxicity

Published online by Cambridge University Press:  12 June 2017

James L. Hilton  and
Parthasarathy Pillai
James L. Hilton
Affiliation:
Agric. Res. Serv., U.S. Dep. Agric., Beltsville, MD 20705
Parthasarathy Pillai
Affiliation:
Agric. Res. Serv., U.S. Dep. Agric., Beltsville, MD 20705
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Abstract

Thioproline (L-thiazolidine-4-carboxylic acid) partially protects sorghum [Sorghum bicolor (L.) Moench. ‘DK 42Y’] seedlings against the herbicides tridiphane [2-(3,5-dichlorophenyl)-2-(2,2,2-trichloroethyl)oxirane] and alachlor [2-chloro-N-(2,6-diethylphenyl)-N-(methoxymethyl)acetamide] in controlled environment chambers. Thioproline alone inhibits plant growth at concentrations above 10−5 M. Its phytotoxicity is intermediate between the two herbicide antidotes OTC (L-2-oxothiazolidine-4-carboxylic acid) and flurazole [phenylmethyl 2-chloro-4-(trifluoromethyl)-5-thiazolecarboxylate]. The two thiazolidine antidotes increased thiol content of excised corn (Zea mays L. ‘DK T 1100’) seedling roots whereas thiol content was decreased by the two herbicides. While thioproline or OTC partially offset tridiphane-induced decreases in thiol content, none of the antidotes effectively circumvented the reduced thiol content resulting from alachlor treatment.

Keywords

AntidotealachlorcysteineflurazoleglutathioneOTCsafenerthiol groupstridiphaneSorghum bicolorZea mays
Type
Research
Information
Weed Technology , Volume 2 , Issue 1 , January 1988 , pp. 72 - 76
Copyright
Copyright © 1988 by the Weed Science Society of America 

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References

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