Auxin herbicides: current status of mechanism and mode of action
Top Cited Papers
- 12 October 2009
- journal article
- review article
- Published by Wiley in Pest Management Science
- Vol. 66 (2), 113-120
- https://doi.org/10.1002/ps.1860
Abstract
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. Copyright © 2009 Society of Chemical IndustryKeywords
This publication has 52 references indexed in Scilit:
- Auxin: A Trigger for Change in Plant DevelopmentCell, 2009
- Conditional Repression of AUXIN BINDING PROTEIN1 Reveals That It Coordinates Cell Division and Cell Expansion during Postembryonic Shoot Development inArabidopsisand TobaccoPlant Cell, 2008
- Regulation of Ethylene BiosynthesisJournal of Plant Growth Regulation, 2007
- Mutations in an Auxin Receptor Homolog AFB5 and in SGT1b Confer Resistance to Synthetic Picolinate Auxins and Not to 2,4-Dichlorophenoxyacetic Acid or Indole-3-Acetic Acid in ArabidopsisPlant Physiology, 2006
- Regulation of genes associated with auxin, ethylene and ABA pathways by 2,4-dichlorophenoxyacetic acid in ArabidopsisFunctional & Integrative Genomics, 2005
- Ethylene‐triggered abscisic acid: A principle in plant growth regulation?Physiologia Plantarum, 2001
- Auxin-Induced Ethylene Triggers Abscisic Acid Biosynthesis and Growth InhibitionPlant Physiology, 2000
- Dual action of the active oxygen species during plant stress responsesCellular and Molecular Life Sciences, 2000
- Evidence for a Causative Role of Cyanide, Derived from Ethylene Biosynthesis, in the Herbicidal Mode of Action of Quinclorac in Barnyard GrassPesticide Biochemistry and Physiology, 1995
- Uncoupling Auxin and Ethylene Effects in Transgenic Tobacco and Arabidopsis PlantsPlant Cell, 1993