| Auxin herbicides: current status of mechanism and mode of action. | |
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MedLine Citation:
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PMID: 19823992 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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Synthetic compounds that act like phytohormonal 'superauxins' have been among the most successful herbicides used in agriculture for more than 60 years. These so-called auxin herbicides are more stable in planta than the main natural auxin, indole-3-acetic acid (IAA), and show systemic mobility and selective action, preferentially against dicot weeds in cereal crops. They belong to different chemical classes, which include phenoxycarboxylic acids, benzoic acids, pyridinecarboxylic acids, aromatic carboxymethyl derivatives and quinolinecarboxylic acids. The recent identification of receptors for auxin perception and the discovery of a new hormone interaction in signalling between auxin, ethylene and the upregulation of abscisic acid biosynthesis account for a large part of the repertoire of auxin-herbicide-mediated responses, which include growth inhibition, senescence and tissue decay in sensitive dicots. An additional phenomenon is caused by the quinolinecarboxylic acid quinclorac, which also controls grass weeds. Here, the accumulation of phytotoxic levels of tissue cyanide, derived ultimately from quinclorac-stimulated ethylene biosynthesis, plays a key role in eliciting the herbicidal symptoms in sensitive grasses. |
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Authors:
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Klaus Grossmann |
Publication Detail:
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Type: Journal Article; Review |
Journal Detail:
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Title: Pest management science Volume: 66 ISSN: 1526-4998 ISO Abbreviation: Pest Manag. Sci. Publication Date: 2010 Feb |
Date Detail:
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Created Date: 2010-01-12 Completed Date: 2010-03-05 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 100898744 Medline TA: Pest Manag Sci Country: England |
Other Details:
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Languages: eng Pagination: 113-20 Citation Subset: IM |
Affiliation:
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BASF Agricultural Centre Limburgerhof, D-67117 Limburgerhof, Germany. klaus.grossmann@basf.com |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Gene Expression Regulation, Plant
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drug effects Herbicides / chemistry, metabolism, pharmacology* Indoleacetic Acids / chemistry, metabolism, pharmacology* Poaceae / drug effects*, genetics, growth & development, metabolism Signal Transduction / drug effects |
| Chemical | |
Reg. No./Substance:
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0/Herbicides; 0/Indoleacetic Acids |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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