Inhibition of plant acetyl-coenzyme a carboxylase by the herbicides sethoxydim and haloxyfop

J. D. Burton; J. W. Gronwald; D. A. Somers; J. A. Connelly; B. G. Gengenbach; D. L. Wyse

doi:10.1016/S0006-291X(87)80236-X

Inhibition of plant acetyl-coenzyme a carboxylase by the herbicides sethoxydim and haloxyfop

J. D. Burton, J. W. Gronwald, D. A. Somers, J. A. Connelly, B. G. Gengenbach, D. L. Wyse

Agronomy and Plant Genetics

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156 Scopus citations

Abstract

Incorporation of [¹⁴C]acetate or [¹⁴c]pyruvate into fatty acids in isolated corn seedling chloroplasts was inhibited 90% or greater by 10 μM sethoxydim or 1 μM haloxyfop. At these concentrations, neither sethoxydim nor haloxyfop inhibited [¹⁴c]acetate incorporation into fatty acids in isolated pea chloroplasts. Sethoxydim (10 μM) and haloxyfop (1 μM) did not inhibit incorporation of [¹⁴c]malonyl-CoA intofatty acids in cell free extracts from corn tissue cultures. Acetyl coenzyme A carboxylase (EC 6.4.1.2) from corn seedling chloroplasts was inhibited by both sethoxydim and haloxyfop, with I₅₀ values of 2.9 and 0.5 μM, respectively. This enzyme in pea was not inhibited by 10 μM sethoxydim or 1 μM haloxyfop.

Original language	English (US)
Pages (from-to)	1039-1044
Number of pages	6
Journal	Biochemical and Biophysical Research Communications
Volume	148
Issue number	3
DOIs	https://doi.org/10.1016/S0006-291X(87)80236-X
State	Published - Nov 13 1987

Bibliographical note

Funding Information:
Cooperative investigations of the Minnesota Agric. Exp. Stn. and the U.S. Dep. Agric., Agric. Res. Service. Paper no. 15,535, Sci. J. Ser., Minnesota Agric. Exp. Stn., St. Paul, MN. We wish to thank BASF Corporation for financial support.

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title = "Inhibition of plant acetyl-coenzyme a carboxylase by the herbicides sethoxydim and haloxyfop",

abstract = "Incorporation of [14C]acetate or [14c]pyruvate into fatty acids in isolated corn seedling chloroplasts was inhibited 90% or greater by 10 μM sethoxydim or 1 μM haloxyfop. At these concentrations, neither sethoxydim nor haloxyfop inhibited [14c]acetate incorporation into fatty acids in isolated pea chloroplasts. Sethoxydim (10 μM) and haloxyfop (1 μM) did not inhibit incorporation of [14c]malonyl-CoA intofatty acids in cell free extracts from corn tissue cultures. Acetyl coenzyme A carboxylase (EC 6.4.1.2) from corn seedling chloroplasts was inhibited by both sethoxydim and haloxyfop, with I50 values of 2.9 and 0.5 μM, respectively. This enzyme in pea was not inhibited by 10 μM sethoxydim or 1 μM haloxyfop.",

author = "Burton, {J. D.} and Gronwald, {J. W.} and Somers, {D. A.} and Connelly, {J. A.} and Gengenbach, {B. G.} and Wyse, {D. L.}",

note = "Funding Information: Cooperative investigations of the Minnesota Agric. Exp. Stn. and the U.S. Dep. Agric., Agric. Res. Service. Paper no. 15,535, Sci. J. Ser., Minnesota Agric. Exp. Stn., St. Paul, MN. We wish to thank BASF Corporation for financial support.",

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AU - Burton, J. D.

AU - Gronwald, J. W.

AU - Somers, D. A.

AU - Connelly, J. A.

AU - Gengenbach, B. G.

AU - Wyse, D. L.

N1 - Funding Information: Cooperative investigations of the Minnesota Agric. Exp. Stn. and the U.S. Dep. Agric., Agric. Res. Service. Paper no. 15,535, Sci. J. Ser., Minnesota Agric. Exp. Stn., St. Paul, MN. We wish to thank BASF Corporation for financial support.

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N2 - Incorporation of [14C]acetate or [14c]pyruvate into fatty acids in isolated corn seedling chloroplasts was inhibited 90% or greater by 10 μM sethoxydim or 1 μM haloxyfop. At these concentrations, neither sethoxydim nor haloxyfop inhibited [14c]acetate incorporation into fatty acids in isolated pea chloroplasts. Sethoxydim (10 μM) and haloxyfop (1 μM) did not inhibit incorporation of [14c]malonyl-CoA intofatty acids in cell free extracts from corn tissue cultures. Acetyl coenzyme A carboxylase (EC 6.4.1.2) from corn seedling chloroplasts was inhibited by both sethoxydim and haloxyfop, with I50 values of 2.9 and 0.5 μM, respectively. This enzyme in pea was not inhibited by 10 μM sethoxydim or 1 μM haloxyfop.

AB - Incorporation of [14C]acetate or [14c]pyruvate into fatty acids in isolated corn seedling chloroplasts was inhibited 90% or greater by 10 μM sethoxydim or 1 μM haloxyfop. At these concentrations, neither sethoxydim nor haloxyfop inhibited [14c]acetate incorporation into fatty acids in isolated pea chloroplasts. Sethoxydim (10 μM) and haloxyfop (1 μM) did not inhibit incorporation of [14c]malonyl-CoA intofatty acids in cell free extracts from corn tissue cultures. Acetyl coenzyme A carboxylase (EC 6.4.1.2) from corn seedling chloroplasts was inhibited by both sethoxydim and haloxyfop, with I50 values of 2.9 and 0.5 μM, respectively. This enzyme in pea was not inhibited by 10 μM sethoxydim or 1 μM haloxyfop.

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Inhibition of plant acetyl-coenzyme a carboxylase by the herbicides sethoxydim and haloxyfop

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