Microbial degradation of the benzonitrile herbicides dichlobenil, bromoxynil and ioxynil in soil and subsurface environments - Insights into degradation pathways, persistent metabolites and involved degrader organisms

Maria S. Holtze, Sebastian R. Sørensen, Jan Sørensen, Jens Aamand

Research output: Contribution to journalArticleResearchpeer-review

88 Citations (Scopus)

Abstract

The benzonitriles dichlobenil, bromoxynil and ioxynil are important broad-spectrum or selective herbicides used in agriculture, orchards and public areas worldwide. The dichlobenil metabolite 2,6-dichlorobenzamide is the most frequently encountered groundwater contaminant in Denmark, which suggests that the environmental fate of these three structurally related benzonitrile herbicides should be addressed in detail. This review summarises the current knowledge on microbial degradation of dichlobenil, bromoxynil and ioxynil with particular focus on common features of degradation rates and pathways, accumulation of persistent metabolites and diversity of the involved degrader organisms.

Original languageEnglish
Pages (from-to)155-168
Number of pages14
JournalEnvironmental Pollution
Volume154
Issue number2
DOIs
Publication statusPublished - Jul 2008

Keywords

  • Benzonitrile herbicides
  • Degradation pathways
  • Groundwater contamination
  • Metabolites
  • Review

Programme Area

  • Programme Area 2: Water Resources

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