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Article Dans Une Revue Folia Microbiologica Année : 2008

Degradation of PAHs by ligninolytic enzymes of Irpex lacteus

Résumé

The ligninolytic fungus Irpex Lacteus was shown as an efficient degrader of oligocyclic aromatic hydrocarbons (PAHs; 'polycyclic aromatic hydrocarbons') possessing 3-6 aromatic rings in complex liquid media. The strain produced mainly Mn-dependent peroxidase in media without pollutants. Activity of ligninolytic enzymes was higher in a N-limited medium. However, after contamination with PAHs (especially pyrene) the values increased and significant activity of Mn-independent peroxidase appeared in the complex medium. Other factors (such as the increase in nitrogen concentration or the presence of solvent(s) for dissolution of PAHs) had no effect. cytochrome P-450 was detected in the microsomal fraction of biomass grown in the complex medium. The rate of PAH degradation was also affected by the presence of various combinations of PAHs. However, independently of the enzyme activities, anthracene was shown to have a positive influence on degradation of pyrene and fluoranthene.
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Dates et versions

hal-02657202 , version 1 (30-05-2020)

Identifiants

  • HAL Id : hal-02657202 , version 1
  • PRODINRA : 25197
  • WOS : 000258802200002

Citer

Thomas Cajthaml, P.aula Erbanova, Albert Kollmann, Cenek Novotny, Vaclav Sasek, et al.. Degradation of PAHs by ligninolytic enzymes of Irpex lacteus. Folia Microbiologica, 2008, 53 (4), pp.289-294. ⟨hal-02657202⟩

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