Effect of static magnetic field (200 mT) on biofilm formation in Pseudomonas aeruginosa

  • Hanini RaouiaEmail author
  • Beghalem Hamida
  • Aliliche Khadidja
  • Landoulsi Ahmed
  • Chatti Abdelwaheb
Original Paper


Several studies have investigated the effects of ionizing and non-ionizing radiations on microorganisms. However, the interaction between the magnetic field radiations and bacteria is less studied. The aim of our study was to study the effect of static magnetic field on the biofilm formation in Pseudomonas aeruginosa and its isogenic sod mutants. Our results revealed that the exposure to the static magnetic field (200 mT) increases significantly the swarming in the wild strain. The fliC gene expression did not show significant difference after 6 h exposure of the wild-type strain. The release of some compounds of the biofilm matrix such as rhamnolipids has been considerably enhanced after 6 h of exposure in the wild type. On the other hand, the pyocyanin and biofilm production was increased significantly in all strains compared to controls. Furthermore, our results revealed that the biofilm formation was confirmed by the pslA and ppyR gene expressions.


Biofilm Motility Pseudomonas aeruginosa sod mutation Static magnetic field 



The authors are grateful to Mr Iiyama Kazuhiro of the Fukuoka University of Agriculture for providing bacterial strains.


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Copyright information

© Springer-Verlag GmbH Germany, part of Springer Nature 2019

Authors and Affiliations

  • Hanini Raouia
    • 1
    Email author
  • Beghalem Hamida
    • 1
  • Aliliche Khadidja
    • 1
  • Landoulsi Ahmed
    • 1
  • Chatti Abdelwaheb
    • 2
  1. 1.Biochemistry and Molecular Biology Unit, Faculty of Science of BizerteCarthage UniversityJarzounaTunisia
  2. 2.Wastewater Treatment and Valorization Laboratory, Water Research and Technology Center CERTETechnopole Borj CedriaSolimanTunisia

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