Isolation of Pseudomonas fluorescens species highly resistant to pentachlorobenzene
| Autor: | Elena Sevillano, Itxaso Montánchez, Susana Rodriguez-Couto, Lucía Gallego, Vladimir R. Kaberdin, Anna Chao Kaberdina |
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| Rok vydání: | 2016 |
| Předmět: |
0301 basic medicine
030106 microbiology Pseudomonas fluorescens Biology Bacterial growth medicine.disease_cause Chlorobenzenes Microbiology Serratia 03 medical and health sciences chemistry.chemical_compound Bioremediation Bacterial Proteins Pentachlorobenzene Drug Resistance Bacterial medicine Escherichia coli Soil Microbiology chemistry.chemical_classification Reactive oxygen species General Medicine biology.organism_classification Oxidative Stress 030104 developmental biology chemistry Biochemistry Reactive Oxygen Species Oxidative stress |
| Zdroj: | Folia microbiologica. 62(4) |
| ISSN: | 1874-9356 |
| Popis: | Polychlorinated aromatic compounds, including pentachlorobenzenes and hexachlorobenzenes, are recalcitrant industrial pollutants that cause adverse effects on living cells. In this paper, the isolation of Pseudomonas fluorescens species with high resistance to pentachlorobenzene (PeCB) is reported. It was found that, in contrast to its slightly negative effect on P. fluorescens growth, PeCB readily inhibited the cell growth of Serratia spp. and Escherichia coli strains, thus indicating that inhibition of bacterial growth by PeCB is species-dependent. Analysis of a P. fluorescens isolate revealed that the exposure to PeCB induced production of reactive oxygen species and led to an increase in the level of alkyl hydroperoxide reductase C (AhpC), an important enzyme enhancing the cell tolerance to organic hydroperoxides usually accumulated under oxidative stress. The putative mechanism conferring PeCB resistance to P. fluorescens and the potential use of P. fluorescens in bioremediation are discussed. |
| Databáze: | OpenAIRE |
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