Comparative studies of bacteria with an atomic force microscopy operating in different modes

A. V. Bolshakova, O. I. Kiselyova, A. S. Filonov, O. Yu Frolova, Y. L. Lyubchenko, I. V. Yaminsky

Research output: Contribution to journalArticle

135 Scopus citations

Abstract

Escherichia coli bacterial cells of two strains JM109 and K12 J62 were imaged with atomic force microscopy (AFM) in different environmental conditions. The AFM results show that the two strains have considerable difference in the surface morphology. At the same time after rehydration both strains show the loss of the topographic features and increase in lateral and vertical dimensions. Results obtained in different AFM modes (contact, tapping, MAC) were compared. Imaging in culture medium was applied for direct observation of the surface degradation effect of lysozyme. The treatment of the cells with the enzyme in the culture medium lead to the loss of surface rigidity and eventually to dramatic changes of the bacteria shape.

Original languageEnglish (US)
Pages (from-to)121-128
Number of pages8
JournalUltramicroscopy
Volume86
Issue number1-2
DOIs
StatePublished - 2001

Keywords

  • Atomic force microscopy
  • Bacteria
  • Lysozyme
  • Surface morphology

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Instrumentation

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    Bolshakova, A. V., Kiselyova, O. I., Filonov, A. S., Frolova, O. Y., Lyubchenko, Y. L., & Yaminsky, I. V. (2001). Comparative studies of bacteria with an atomic force microscopy operating in different modes. Ultramicroscopy, 86(1-2), 121-128. https://doi.org/10.1016/S0304-3991(00)00075-9