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Selective Induction of Glutathione S-Transferase Subunits in Wheat Plants Exposed to the Herbicide Acifluorfen

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Selective Induction of Glutathione S-Transferase Subunits in Wheat Plants Exposed to the Herbicide Acifluorfen

Sophie Pascal

a

, Ga´bor Gullner

b

, Tama´s Kömives

b

and Rene´ Scalla

a,

*

a INRA, Laboratoire des Xe´nobiotiques, 180 Chemin de Tournefeuille, BP 3,

F-31931 Toulouse cedex 9, France. Fax: (33)-5-61 28 52 44. E-mail: rscalla@toulouse.inra.fr

b Plant Protection Institute of the Hungarian Academy of Sciences, H-1022 Budapest, Herman Otto u. 15, Hungary

* Author for correspondence and reprint requests

Z. Naturforsch.55 c,37Ð39 (2000); received October 8/November 10, 1999 Acifluorfen, Glutathione S-Transferase, Herbicide, Oxidative Stress, Wheat

Exposure to the herbicide acifluorfen resulted in marked increase of glutathione S-trans- ferase (GST) enzyme activity in wheat seedlings, primarily in shoot tissues. From the six major, constitutively expressed GST subunits found in untreated wheat shoots subunits 2 and 3 were selectively induced by acifluorfen. No new subunit could be detected. The induced subunits belong to those GST isoenzymes, which metabolize diphenyl ether herbicides.

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