Imidazolinones. Potent inhibitors of acetohydroxyacid synthase

The imidazolinones, a new chemical class of herbicides, were shown to be uncompetitive inhibitors of acetohydroxyacid synthase from corn. This is the first common enzyme in the biosynthetic pathway for valine, leucine, and isoleucine. The $K^{i}$ for the imidazolinones tested ranged from 2 to 12 mic...

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Veröffentlicht in:	Plant physiology (Bethesda) 1984-10, Vol.76 (2), p.545-546
Hauptverfasser:	Shaner, D.L, Anderson, P.C, Stidham, M.A
Format:	Artikel
Sprache:	eng
Schlagworte:	ACTIVIDAD ENZIMATICA ACTIVITE ENZYMATIQUE Amino acids Biological and medical sciences Biosynthesis Branched chain amino acids Chemical control Corn Enzymes ENZYMIC ACTIVITY Fundamental and applied biological sciences. Psychology HERBICIDAS HERBICIDE HERBICIDES Parasitic plants. Weeds Pesticidal action Phytopathology. Animal pests. Plant and forest protection Plants Protein synthesis Root tips Short Communications Weeds ZEA MAYS
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Beschreibung
Zusammenfassung:	The imidazolinones, a new chemical class of herbicides, were shown to be uncompetitive inhibitors of acetohydroxyacid synthase from corn. This is the first common enzyme in the biosynthetic pathway for valine, leucine, and isoleucine. The $K^{i}$ for the imidazolinones tested ranged from 2 to 12 micromolar. These results may explain the mechanism of action of these new herbicides.
ISSN:	0032-0889 1532-2548
DOI:	10.1104/pp.76.2.545