Dechlorination of lindane by the cyanobacterium Anabaena sp. strain PCC7120 depends on the function of the nir operon

J Bacteriol. 1997 May;179(10):3368-70. doi: 10.1128/jb.179.10.3368-3370.1997.


Nitrate is essential for lindane dechlorination by the cyanobacteria Anabaena sp. strain PCC7120 and Nostoc ellipsosporum, as it is for dechlorination of other organic compounds by heterotrophic microorganisms. Based on analyses of mutants and effects of environmental factors, we conclude that lindane dechlorination by Anabaena sp. requires a functional nir operon that encodes the enzymes for nitrate utilization.

Publication types

  • Research Support, Non-U.S. Gov't
  • Research Support, U.S. Gov't, Non-P.H.S.

MeSH terms

  • Anabaena / drug effects
  • Anabaena / metabolism*
  • Biodegradation, Environmental / drug effects
  • Chlorine / metabolism*
  • Cyanobacteria / metabolism
  • DNA Transposable Elements
  • Darkness
  • Hexachlorocyclohexane / metabolism*
  • Mutagenesis, Insertional
  • Nitrate Reductases / genetics*
  • Nitrates / metabolism
  • Nitrite Reductases / metabolism
  • Operon*
  • Quaternary Ammonium Compounds / pharmacology


  • DNA Transposable Elements
  • Nitrates
  • Quaternary Ammonium Compounds
  • Chlorine
  • Hexachlorocyclohexane
  • Nitrate Reductases
  • Nitrite Reductases