Decreased Glutathione Levels Enhance the Susceptibility of Maize Seedlings to Metolachlor

Farago, Slobodan; Kreuz, Klaus; Brunold, Christian (1993). Decreased Glutathione Levels Enhance the Susceptibility of Maize Seedlings to Metolachlor. Pesticide Biochemistry and Physiology, 47(3), pp. 199-205. Academic Press 10.1006/pest.1993.1079

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The effect of decreased glutathione levels on the action of the herbicide metolachlor was studied in shoots of maize seedlings. Metolachlor inhibited growth by impairing the length, the dry weight, and the fresh weight of maize shoots. Conversely, buthionine-S,R-sulfoximine (BSO), an inhibitor of γ-glutamylcysteine synthetase (EC 6.3.2.2.), when applied in concentrations of up to 2 mM had no effect on shoot growth, but it decreased the glutathione content up to 22-fold compared to untreated plants. When 100 μM metolachlor and various BSO levels were applied together, the growth of the shoots was inhibited with increasing concentrations of BSO. This growth inhibition significantly correlated with the decreased glutathione content. As BSO increased the metolachlordependent activity of glutathione transferase, our results suggest that decreased intracellular glutathione levels obtained with BSO are one of the limiting factors for the tolerance of maize plants to metolachlor.

Item Type:

Journal Article (Original Article)

Division/Institute:

08 Faculty of Science > Department of Biology > Institute of Plant Sciences (IPS) > Stress Physiology (discontinued)
08 Faculty of Science > Department of Biology > Institute of Plant Sciences (IPS)

UniBE Contributor:

Brunold, Christian

Subjects:

500 Science > 580 Plants (Botany)

ISSN:

00483575

Publisher:

Academic Press

Language:

English

Submitter:

Peter Alfred von Ballmoos-Haas

Date Deposited:

18 Jul 2018 13:12

Last Modified:

23 Oct 2019 07:50

Publisher DOI:

10.1006/pest.1993.1079

BORIS DOI:

10.7892/boris.118346

URI:

https://boris.unibe.ch/id/eprint/118346

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