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Herbicides, Carotenoid Biosynthesis Inhibitors

  1. Franck E. Dayan,
  2. Stephen O. Duke

Published Online: 15 APR 2003

DOI: 10.1002/047126363X.agr143

Encyclopedia of Agrochemicals

Encyclopedia of Agrochemicals

How to Cite

Dayan, F. E. and Duke, S. O. 2003. Herbicides, Carotenoid Biosynthesis Inhibitors. Encyclopedia of Agrochemicals. .

Author Information

  1. USDA-ARS-NPURU University, Mississippi

Publication History

  1. Published Online: 15 APR 2003


The carotenoid biosynthetic pathway is an important target site for several classes of herbicides. Carotenoid biosynthesis can be stopped by inhibiting a number of key enzymes. Phytoene desaturase (PDS) is the most common target site of herbicides affecting carotenoid production. As a group, these herbicides are considered environmentally safe because they are used at very low concentrations and target an enzyme not found in animals. As a result, fluridone is the most successful aquatic herbicide available to date.


  • fluridone;
  • carotenoid biosynthetic pathway;
  • phytoene desaturase;
  • pyridazinones;
  • clomazone;
  • pyridinecarboximades;
  • phenoxy-butanamide