| Literature DB >> 16666913 |
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.).Entities:
Year: 1989 PMID: 16666913 PMCID: PMC1061873 DOI: 10.1104/pp.90.4.1239
Source DB: PubMed Journal: Plant Physiol ISSN: 0032-0889 Impact factor: 8.340