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Haque, A.U. ; Weisgerber, I. ; Klein, W.

Absorption, efflux, and metabolism of the herbicide [14C]Buturon as affected by plant nutrition.

J. Exp. Bot. 28, 468-479 (1977)
DOI
Open Access Green as soon as Postprint is submitted to ZB.
Mineral deficiencies can reduce the absorption and translocation of the urea herbicide [14C]-buturon and its metabolites in wheat. The efflux of [14C]buturon and its metabolites from mineral-deficient plants was increased as compared to normal-grown plants.The metabolism rate of herbicide in the roots of normal-grown plants increased for 24 h, then decreased again, whereas in shoots a continuous increase was observed for 7 d; at this time, the metabolism rate was 25.6 per cent of the radioactivity present in the roots and 23.7 per cent in the shoots. In the nutrient-deficient plants, the metabolism of buturon was significantly increased as compared to the plants grown in normal medium. In the N-deficient nutrient medium, the ratio of metabolites to parent compound was higher than in the complete medium.Four groups of metabolites were observed in plants: a small group of carbamates (metabolite group I), a group of mainly unstable compounds decreasing rapidly in roots (II), a group comprising, among others, p-chloroacetanilide (III), and a group of conjugates (IV); the groups III and IV increased continuously during 7 d. The metabolites were isolated through column and thin layer chromatography and identified by comparison with reference compounds and combined gas chromatography/mass spectrometry analysis.
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Publication type Article: Journal article
Document type Scientific Article
Corresponding Author
ISSN (print) / ISBN 0022-0957
e-ISSN 1460-2431
Journal Journal of Experimental Botany
Quellenangaben Volume: 28, Issue: 2, Pages: 468-479 Article Number: , Supplement: ,
Publisher Oxford University Press
Non-patent literature Publications
Reviewing status Peer reviewed
Institute(s) Institute of Ecological Chemistry (IOEC)