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. 1989 Aug;90(4):1239-42.
doi: 10.1104/pp.90.4.1239.

Inhibition of plant protoporphyrinogen oxidase by the herbicide acifluorfen-methyl

D A Witkowski  1 , B P Halling
Affiliations

Inhibition of plant protoporphyrinogen oxidase by the herbicide acifluorfen-methyl

D A Witkowski et al. Plant Physiol. 1989 Aug.

Abstract

The effect of acifluorfen-methyl on tetrapyrrole synthesis in greening chloroplasts of Cucumis sativus was examined. Formation of Mg-proto-porphyrin IX from delta-aminolevulinate was reduced 98% by 10 micromolar acifluorfen-methyl. Conversion of protoporphyrin IX to Mg-protoporphyrin IX was unaffected, but protoporphyrin IX synthesis from delta-aminolevulinate was blocked, indicating a site of inhibition prior to the Mg-chelatase. The enzymic oxidation of protoporphyrinogen IX to protoporphyrin IX was highly sensitive to acifluorfen-methyl, indicating that the site of action of the herbicide is the protoporphyrinogen oxidase. ((c) 1989 FMC Corporation. All rights reserved.).

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References

    1. J Biol Chem. 1988 Mar 15;263(8):3835-9 - PubMed
    1. Arch Biochem Biophys. 1979 Feb;192(2):592-8 - PubMed
    1. Plant Physiol. 1988 Feb;86(2):619-22 - PubMed
    1. Anal Biochem. 1976 May 7;72:248-54 - PubMed
    1. Plant Physiol. 1984 Jul;75(3):662-4 - PubMed

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