Chinese Journal of Oceanology and Limnology

, Volume 30, Issue 2, pp 269–278

Construction of two selectable markers for integrative/conjugative plasmids in Flavobacterium columnare

Authors

  • Jin Zhang张金
    • State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of HydrobiologyChinese Academy of Sciences
    • Graduate University of Chinese Academy of Sciences
  • Hong Zou邹红
    • State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of HydrobiologyChinese Academy of Sciences
  • Liangfa Wang王良发
    • State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of HydrobiologyChinese Academy of Sciences
  • Bei Huang黄贝
    • State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of HydrobiologyChinese Academy of Sciences
  • Nan Li李楠
    • State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of HydrobiologyChinese Academy of Sciences
  • Guitang Wang王桂堂
    • State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of HydrobiologyChinese Academy of Sciences
    • State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of HydrobiologyChinese Academy of Sciences
Biology

DOI: 10.1007/s00343-012-1077-z

Cite this article as:
Zhang, J., Zou, H., Wang, L. et al. Chin. J. Ocean. Limnol. (2012) 30: 269. doi:10.1007/s00343-012-1077-z

Abstract

Flavobacterium columnare, the etiological agent of columnaris disease, is one of the most important and widespread bacterial pathogens of freshwater fish. In this study, we constructed two artificial selectable markers (chloramphenicol and spectinomycin resistance) for gene transfer in F. columnare. These two new artificial selectable markers, which were created by placing the chloramphenicol or spectinomycin resistance gene under the control of the native acs regulatory region of F. columnare, were functional in both F. columnare and Escherichia coli. The integrative/conjugative plasmids constructed by using these markers were introduced into F. columnare G4 via electroporation or conjugation. The integrated plasmid DNA was confirmed by Southern blotting and PCR analysis. These two markers can be employed in future investigations into gene deletion and the pathogenicity of virulence factors in F. columnare.

Keyword

Flavobacterium columnareselectable markerintegrative/conjugative plasmidgene disruption

Abbreviations

PCR

polymerase chain reaction

OMP

outer membrane protein

SCF

specific chromosome fragment

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Copyright information

© Chinese Society for Oceanology and Limnology, Science Press and Springer-Verlag Berlin Heidelberg 2012