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L-2-Oxothiazolidine-4-Carboxylic Acid Protection Against Tridiphane 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

Tridiphane [2-(3,5-dichlorophenyl)-2-(2,2,2-trichloroethyl)oxirane] inhibited growth of seedling corn (Zea mays L. ‘DK T 1100’), wheat (Triticum aesetivum L. ‘Arthur’), and sorghum (Sorghum vulgare Pers. ‘DK 42Y’) in growth chamber experiments. These inhibitions were partially circumvented by simultaneous treatment with OTC (L-2-oxothiazolidine-4-carboxylic acid). Tridiphane, atrazine [6-chloro-N-ethyl-N′-(1-methylethyl)-1,3,5-triazine-2,4-diamine], and OTC each increased levels of low molecular weight thiols (glutathione) in intact roots of treated corn seedlings, but only OTC did in excised roots. Tridiphane and atrazine caused a decrease in thiol content of excised roots. Tridiphane treatments reduced the amount of glutathione S-transferase activity extractable from corn roots, and this reduction was circumvented partially by OTC applied in combination with tridiphane. These data present evidence that tridiphane interference with cysteine or glutathione metabolism can be reversed by increasing cellular content of cysteine.

Keywords

Antidoteatrazinecysteineglutathioneglutathione S-transferasethiol groups
Type
Physiology, Chemistry, and Biochemistry
Information
Weed Science , Volume 34 , Issue 5 , September 1986 , pp. 669 - 675
Copyright
Copyright © 1986 by the Weed Science Society of America 

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