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Analytical and Bioanalytical Chemistry

, Volume 407, Issue 25, pp 7625–7635 | Cite as

Characterization of Dickeya and Pectobacterium species by capillary electrophoretic techniques and MALDI-TOF MS

  • Jiří ŠalplachtaEmail author
  • Anna Kubesová
  • Jaroslav Horký
  • Hana Matoušková
  • Marie Tesařová
  • Marie Horká
Research Paper

Abstract

Dickeya and Pectobacterium species represent an important group of broad-host-range phytopathogens responsible for blackleg and soft rot diseases on numerous plants including many economically important plants. Although these species are commonly detected using cultural, serological, and molecular methods, these methods are sometimes insufficient to classify the bacteria correctly. On that account, this study was undertaken to investigate the feasibility of three individual analytical techniques, capillary zone electrophoresis (CZE), capillary isoelectric focusing (CIEF), and matrix-assisted laser desorption/ionization time-of-flight mass spectrometry (MALDI-TOF MS), for reliable classification of Dickeya and Pectobacterium species. Forty-three strains, representing different Dickeya and Pectobacterium species, namely Dickeya dianthicola, Dickeya dadantii, Dickeya dieffenbachiae, Dickeya chrysanthemi, Dickeya zeae, Dickeya paradisiaca, Dickeya solani, Pectobacterium carotovorum, and Pectobacterium atrosepticum, were selected for this purpose. Furthermore, the selected bacteria included one strain which could not be classified using traditional microbiological methods. Characterization of the bacteria was based on different pI values (CIEF), migration velocities (CZE), or specific mass fingerprints (MALDI-TOF MS) of intact cells. All the examined strains, including the undetermined bacterium, were characterized and classified correctly into respective species. MALDI-TOF MS provided the most reliable results in this respect.

Keywords

Dickeya Pectobacterium CZE CIEF MALDI 

Notes

Acknowledgments

This work was supported by a grant from the Ministry of the Interior of the Czech Republic (No. VG20112015021) and with the institutional support (RVO: 68081715).

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Copyright information

© Springer-Verlag Berlin Heidelberg 2015

Authors and Affiliations

  • Jiří Šalplachta
    • 1
    Email author
  • Anna Kubesová
    • 1
  • Jaroslav Horký
    • 2
  • Hana Matoušková
    • 2
  • Marie Tesařová
    • 1
  • Marie Horká
    • 1
  1. 1.Institute of Analytical Chemistry of the ASCRBrnoCzech Republic
  2. 2.Division of DiagnosticsCentral Institute for Supervising and Testing in AgricultureOlomoucCzech Republic

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